/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=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 23:48:23,636 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 23:48:23,639 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 23:48:23,696 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 23:48:23,697 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 23:48:23,703 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 23:48:23,705 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 23:48:23,710 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 23:48:23,713 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 23:48:23,719 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 23:48:23,721 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 23:48:23,722 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 23:48:23,723 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 23:48:23,726 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 23:48:23,730 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 23:48:23,733 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 23:48:23,734 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 23:48:23,738 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 23:48:23,757 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 23:48:23,760 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 23:48:23,765 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 23:48:23,767 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 23:48:23,768 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 23:48:23,769 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 23:48:23,773 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 23:48:23,773 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 23:48:23,773 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 23:48:23,774 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 23:48:23,775 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 23:48:23,776 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 23:48:23,776 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 23:48:23,777 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 23:48:23,778 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 23:48:23,779 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 23:48:23,781 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 23:48:23,781 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 23:48:23,782 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 23:48:23,782 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 23:48:23,782 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 23:48:23,783 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 23:48:23,784 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 23:48:23,785 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 [2020-10-27 23:48:23,814 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 23:48:23,814 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 23:48:23,816 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 23:48:23,816 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 23:48:23,816 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 23:48:23,816 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 23:48:23,817 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 23:48:23,817 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 23:48:23,817 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 23:48:23,817 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 23:48:23,817 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 23:48:23,818 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 23:48:23,818 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 23:48:23,818 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 23:48:23,818 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 23:48:23,819 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 23:48:23,819 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 23:48:23,819 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 23:48:23,819 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 23:48:23,819 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 23:48:23,820 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 23:48:23,820 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 23:48:23,820 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 23:48:23,820 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 23:48:23,821 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 23:48:23,821 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 23:48:23,821 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 23:48:23,821 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 23:48:23,821 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 23:48:23,822 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 23:48:24,198 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 23:48:24,224 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 23:48:24,228 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 23:48:24,229 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 23:48:24,230 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 23:48:24,233 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c [2020-10-27 23:48:24,327 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f39cc5d78/a2129203e2a4405fb81b1040d4029786/FLAGb5cfe8c58 [2020-10-27 23:48:25,024 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 23:48:25,024 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c [2020-10-27 23:48:25,051 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f39cc5d78/a2129203e2a4405fb81b1040d4029786/FLAGb5cfe8c58 [2020-10-27 23:48:25,361 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f39cc5d78/a2129203e2a4405fb81b1040d4029786 [2020-10-27 23:48:25,366 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 23:48:25,376 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 23:48:25,381 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 23:48:25,381 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 23:48:25,385 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 23:48:25,386 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 11:48:25" (1/1) ... [2020-10-27 23:48:25,392 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ff11ad2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:48:25, skipping insertion in model container [2020-10-27 23:48:25,393 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 11:48:25" (1/1) ... [2020-10-27 23:48:25,402 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 23:48:25,469 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 23:48:25,790 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 23:48:25,806 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 23:48:25,946 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 23:48:25,973 INFO L208 MainTranslator]: Completed translation [2020-10-27 23:48:25,974 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:48:25 WrapperNode [2020-10-27 23:48:25,974 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 23:48:25,975 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 23:48:25,976 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 23:48:25,976 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 23:48:25,989 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:48:25" (1/1) ... [2020-10-27 23:48:25,990 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:48:25" (1/1) ... [2020-10-27 23:48:26,005 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:48:25" (1/1) ... [2020-10-27 23:48:26,005 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:48:25" (1/1) ... [2020-10-27 23:48:26,023 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:48:25" (1/1) ... [2020-10-27 23:48:26,035 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:48:25" (1/1) ... [2020-10-27 23:48:26,039 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:48:25" (1/1) ... [2020-10-27 23:48:26,045 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 23:48:26,046 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 23:48:26,046 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 23:48:26,047 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 23:48:26,047 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:48:25" (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 [2020-10-27 23:48:26,146 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 23:48:26,146 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 23:48:26,146 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 23:48:26,147 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 23:48:26,147 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 23:48:26,147 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 23:48:26,147 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 23:48:26,147 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 23:48:26,147 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 23:48:26,148 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 23:48:26,148 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 23:48:26,148 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-27 23:48:26,148 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 23:48:26,148 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 23:48:26,148 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-27 23:48:26,149 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-27 23:48:26,169 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-27 23:48:26,170 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-27 23:48:26,170 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-27 23:48:26,170 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-27 23:48:26,170 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 23:48:26,170 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 23:48:26,170 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 23:48:26,170 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 23:48:26,171 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 23:48:26,171 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 23:48:26,177 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 23:48:26,177 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 23:48:26,177 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 23:48:27,190 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 23:48:27,190 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-27 23:48:27,192 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 11:48:27 BoogieIcfgContainer [2020-10-27 23:48:27,192 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 23:48:27,195 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 23:48:27,195 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 23:48:27,198 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 23:48:27,199 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 11:48:25" (1/3) ... [2020-10-27 23:48:27,199 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12d359bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 11:48:27, skipping insertion in model container [2020-10-27 23:48:27,200 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:48:25" (2/3) ... [2020-10-27 23:48:27,200 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12d359bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 11:48:27, skipping insertion in model container [2020-10-27 23:48:27,200 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 11:48:27" (3/3) ... [2020-10-27 23:48:27,202 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c [2020-10-27 23:48:27,214 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 23:48:27,220 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 23:48:27,233 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 23:48:27,262 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 23:48:27,262 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 23:48:27,263 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 23:48:27,263 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 23:48:27,263 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 23:48:27,263 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 23:48:27,263 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 23:48:27,263 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 23:48:27,285 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states. [2020-10-27 23:48:27,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-27 23:48:27,296 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:48:27,297 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:48:27,297 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:48:27,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:48:27,304 INFO L82 PathProgramCache]: Analyzing trace with hash 691850863, now seen corresponding path program 1 times [2020-10-27 23:48:27,314 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:48:27,314 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [110675019] [2020-10-27 23:48:27,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:48:27,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:48:27,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:28,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:28,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:28,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:28,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:28,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:28,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:29,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:29,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:31,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:31,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:31,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:32,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:48:32,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-27 23:48:32,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-27 23:48:32,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-27 23:48:32,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:48:32,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:48:32,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 62 [2020-10-27 23:48:32,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-27 23:48:32,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 23:48:33,102 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-27 23:48:33,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:48:33,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:48:33,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:33,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:48:33,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:48:33,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:48:33,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 23:48:33,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:48:33,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:48:33,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:48:33,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:48:33,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:48:33,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:48:33,190 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [110675019] [2020-10-27 23:48:33,193 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:48:33,193 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:48:33,194 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360184934] [2020-10-27 23:48:33,200 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:48:33,201 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:48:33,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:48:33,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:48:33,226 INFO L87 Difference]: Start difference. First operand 159 states. Second operand 4 states. [2020-10-27 23:48:33,576 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-27 23:48:34,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:48:34,553 INFO L93 Difference]: Finished difference Result 312 states and 512 transitions. [2020-10-27 23:48:34,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:48:34,555 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 81 [2020-10-27 23:48:34,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:48:34,580 INFO L225 Difference]: With dead ends: 312 [2020-10-27 23:48:34,581 INFO L226 Difference]: Without dead ends: 235 [2020-10-27 23:48:34,588 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:48:34,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2020-10-27 23:48:34,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 232. [2020-10-27 23:48:34,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232 states. [2020-10-27 23:48:34,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 333 transitions. [2020-10-27 23:48:34,669 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 333 transitions. Word has length 81 [2020-10-27 23:48:34,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:48:34,670 INFO L481 AbstractCegarLoop]: Abstraction has 232 states and 333 transitions. [2020-10-27 23:48:34,670 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 23:48:34,670 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 333 transitions. [2020-10-27 23:48:34,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-27 23:48:34,674 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:48:34,675 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:48:34,675 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 23:48:34,675 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:48:34,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:48:34,676 INFO L82 PathProgramCache]: Analyzing trace with hash -580331724, now seen corresponding path program 1 times [2020-10-27 23:48:34,677 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:48:34,677 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [571526145] [2020-10-27 23:48:34,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:48:34,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:48:34,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:34,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:34,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:34,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:34,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:35,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:35,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:35,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:39,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:48:39,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-27 23:48:39,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 23:48:39,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-27 23:48:39,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:48:39,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 23:48:39,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-27 23:48:39,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-27 23:48:39,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:48:40,061 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-27 23:48:40,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:48:40,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:48:40,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:40,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:48:40,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:48:40,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:48:40,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 23:48:40,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:48:40,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:48:40,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:48:40,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:48:40,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:48:40,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:48:40,110 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [571526145] [2020-10-27 23:48:40,111 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:48:40,111 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 23:48:40,111 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570189105] [2020-10-27 23:48:40,113 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 23:48:40,113 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:48:40,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 23:48:40,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-27 23:48:40,114 INFO L87 Difference]: Start difference. First operand 232 states and 333 transitions. Second operand 7 states. [2020-10-27 23:48:40,515 WARN L193 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 170 [2020-10-27 23:48:41,381 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-27 23:48:41,649 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 170 [2020-10-27 23:48:41,912 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2020-10-27 23:48:42,179 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 167 [2020-10-27 23:48:43,110 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 170 [2020-10-27 23:48:43,382 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-27 23:48:43,838 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 171 [2020-10-27 23:48:43,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:48:43,913 INFO L93 Difference]: Finished difference Result 1329 states and 2043 transitions. [2020-10-27 23:48:43,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-27 23:48:43,915 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 83 [2020-10-27 23:48:43,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:48:43,930 INFO L225 Difference]: With dead ends: 1329 [2020-10-27 23:48:43,931 INFO L226 Difference]: Without dead ends: 1155 [2020-10-27 23:48:43,934 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2020-10-27 23:48:43,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1155 states. [2020-10-27 23:48:44,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1155 to 532. [2020-10-27 23:48:44,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 532 states. [2020-10-27 23:48:44,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 532 states to 532 states and 800 transitions. [2020-10-27 23:48:44,021 INFO L78 Accepts]: Start accepts. Automaton has 532 states and 800 transitions. Word has length 83 [2020-10-27 23:48:44,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:48:44,022 INFO L481 AbstractCegarLoop]: Abstraction has 532 states and 800 transitions. [2020-10-27 23:48:44,022 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 23:48:44,022 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states and 800 transitions. [2020-10-27 23:48:44,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-27 23:48:44,026 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:48:44,027 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:48:44,027 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 23:48:44,027 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:48:44,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:48:44,028 INFO L82 PathProgramCache]: Analyzing trace with hash -980827587, now seen corresponding path program 1 times [2020-10-27 23:48:44,028 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:48:44,028 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1220951775] [2020-10-27 23:48:44,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:48:44,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:48:44,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:44,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:44,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:44,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:44,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:45,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:45,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:45,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:45,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:46,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:46,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:47,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:49,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:48:49,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-27 23:48:49,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-27 23:48:49,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-27 23:48:49,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:48:49,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 23:48:49,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-27 23:48:49,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-27 23:48:49,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:48:49,379 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-27 23:48:49,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:48:49,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:48:49,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:49,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:48:49,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:48:49,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:48:49,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 23:48:49,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:48:49,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:48:49,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:48:49,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:48:49,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:48:49,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:48:49,442 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1220951775] [2020-10-27 23:48:49,442 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:48:49,442 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 23:48:49,443 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254875328] [2020-10-27 23:48:49,443 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 23:48:49,443 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:48:49,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 23:48:49,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-27 23:48:49,444 INFO L87 Difference]: Start difference. First operand 532 states and 800 transitions. Second operand 7 states. [2020-10-27 23:48:49,745 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 170 [2020-10-27 23:48:50,501 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-27 23:48:50,807 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 167 [2020-10-27 23:48:51,092 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2020-10-27 23:48:51,364 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 170 [2020-10-27 23:48:52,275 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-27 23:48:52,539 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 170 [2020-10-27 23:48:53,045 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 171 [2020-10-27 23:48:53,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:48:53,104 INFO L93 Difference]: Finished difference Result 2860 states and 4435 transitions. [2020-10-27 23:48:53,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-27 23:48:53,105 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 84 [2020-10-27 23:48:53,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:48:53,120 INFO L225 Difference]: With dead ends: 2860 [2020-10-27 23:48:53,120 INFO L226 Difference]: Without dead ends: 2564 [2020-10-27 23:48:53,123 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2020-10-27 23:48:53,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2564 states. [2020-10-27 23:48:53,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2564 to 957. [2020-10-27 23:48:53,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 957 states. [2020-10-27 23:48:53,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 957 states to 957 states and 1456 transitions. [2020-10-27 23:48:53,257 INFO L78 Accepts]: Start accepts. Automaton has 957 states and 1456 transitions. Word has length 84 [2020-10-27 23:48:53,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:48:53,260 INFO L481 AbstractCegarLoop]: Abstraction has 957 states and 1456 transitions. [2020-10-27 23:48:53,260 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 23:48:53,260 INFO L276 IsEmpty]: Start isEmpty. Operand 957 states and 1456 transitions. [2020-10-27 23:48:53,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-27 23:48:53,271 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:48:53,271 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:48:53,271 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 23:48:53,271 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:48:53,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:48:53,275 INFO L82 PathProgramCache]: Analyzing trace with hash -18275124, now seen corresponding path program 1 times [2020-10-27 23:48:53,275 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:48:53,275 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [744093568] [2020-10-27 23:48:53,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:48:53,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:48:53,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:53,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:53,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:53,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:53,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:54,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:54,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:54,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:54,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:55,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:55,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:55,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:57,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:57,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:58,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:58,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:48:58,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-27 23:48:58,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-27 23:48:58,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 23:48:58,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:48:58,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 23:48:58,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-27 23:48:58,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-27 23:48:58,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-27 23:48:58,694 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 15 [2020-10-27 23:48:58,995 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-27 23:48:58,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:48:59,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:48:59,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:59,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:48:59,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:48:59,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:48:59,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 23:48:59,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:48:59,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:48:59,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:48:59,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:48:59,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:48:59,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:48:59,045 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [744093568] [2020-10-27 23:48:59,046 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:48:59,046 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 23:48:59,046 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231794994] [2020-10-27 23:48:59,047 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 23:48:59,047 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:48:59,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 23:48:59,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-27 23:48:59,048 INFO L87 Difference]: Start difference. First operand 957 states and 1456 transitions. Second operand 10 states. [2020-10-27 23:48:59,368 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2020-10-27 23:49:00,507 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 171 [2020-10-27 23:49:03,284 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 167 [2020-10-27 23:49:03,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:49:03,409 INFO L93 Difference]: Finished difference Result 5591 states and 8534 transitions. [2020-10-27 23:49:03,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-27 23:49:03,410 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 84 [2020-10-27 23:49:03,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:49:03,437 INFO L225 Difference]: With dead ends: 5591 [2020-10-27 23:49:03,437 INFO L226 Difference]: Without dead ends: 4850 [2020-10-27 23:49:03,442 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=148, Invalid=664, Unknown=0, NotChecked=0, Total=812 [2020-10-27 23:49:03,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4850 states. [2020-10-27 23:49:03,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4850 to 954. [2020-10-27 23:49:03,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 954 states. [2020-10-27 23:49:03,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 954 states to 954 states and 1446 transitions. [2020-10-27 23:49:03,564 INFO L78 Accepts]: Start accepts. Automaton has 954 states and 1446 transitions. Word has length 84 [2020-10-27 23:49:03,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:49:03,564 INFO L481 AbstractCegarLoop]: Abstraction has 954 states and 1446 transitions. [2020-10-27 23:49:03,565 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 23:49:03,565 INFO L276 IsEmpty]: Start isEmpty. Operand 954 states and 1446 transitions. [2020-10-27 23:49:03,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-27 23:49:03,567 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:49:03,567 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:49:03,567 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 23:49:03,567 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:49:03,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:49:03,568 INFO L82 PathProgramCache]: Analyzing trace with hash 858212961, now seen corresponding path program 1 times [2020-10-27 23:49:03,568 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:49:03,569 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [919721639] [2020-10-27 23:49:03,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:49:03,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:49:03,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:03,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:03,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:03,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:03,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:03,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:04,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:04,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:08,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:08,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:08,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:08,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:49:08,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-27 23:49:08,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-27 23:49:08,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-27 23:49:08,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:49:08,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 23:49:08,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-27 23:49:08,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-27 23:49:08,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:49:08,955 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-27 23:49:08,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:49:08,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:49:08,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:08,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:49:08,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:49:08,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:49:08,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 23:49:08,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:49:08,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:49:08,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:49:08,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:49:08,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 23:49:09,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:49:09,011 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [919721639] [2020-10-27 23:49:09,012 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:49:09,012 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 23:49:09,013 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673106148] [2020-10-27 23:49:09,014 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 23:49:09,014 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:49:09,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 23:49:09,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-27 23:49:09,016 INFO L87 Difference]: Start difference. First operand 954 states and 1446 transitions. Second operand 7 states. [2020-10-27 23:49:09,343 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 170 [2020-10-27 23:49:10,096 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-27 23:49:10,394 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 170 [2020-10-27 23:49:10,656 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 167 [2020-10-27 23:49:10,919 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2020-10-27 23:49:11,786 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-27 23:49:12,058 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 170 [2020-10-27 23:49:12,573 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 171 [2020-10-27 23:49:12,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:49:12,644 INFO L93 Difference]: Finished difference Result 3742 states and 5791 transitions. [2020-10-27 23:49:12,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-27 23:49:12,644 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 84 [2020-10-27 23:49:12,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:49:12,660 INFO L225 Difference]: With dead ends: 3742 [2020-10-27 23:49:12,660 INFO L226 Difference]: Without dead ends: 3211 [2020-10-27 23:49:12,663 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2020-10-27 23:49:12,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3211 states. [2020-10-27 23:49:12,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3211 to 1222. [2020-10-27 23:49:12,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1222 states. [2020-10-27 23:49:12,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1222 states to 1222 states and 1864 transitions. [2020-10-27 23:49:12,784 INFO L78 Accepts]: Start accepts. Automaton has 1222 states and 1864 transitions. Word has length 84 [2020-10-27 23:49:12,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:49:12,784 INFO L481 AbstractCegarLoop]: Abstraction has 1222 states and 1864 transitions. [2020-10-27 23:49:12,785 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 23:49:12,785 INFO L276 IsEmpty]: Start isEmpty. Operand 1222 states and 1864 transitions. [2020-10-27 23:49:12,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-27 23:49:12,786 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:49:12,787 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:49:12,787 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 23:49:12,787 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:49:12,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:49:12,787 INFO L82 PathProgramCache]: Analyzing trace with hash -736942171, now seen corresponding path program 1 times [2020-10-27 23:49:12,788 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:49:12,788 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [14190604] [2020-10-27 23:49:12,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:49:12,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:49:12,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:12,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:12,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:12,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:13,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:13,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:13,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:13,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:14,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:17,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:49:17,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-27 23:49:17,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 23:49:17,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-27 23:49:17,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:49:17,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 23:49:17,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-27 23:49:17,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-27 23:49:17,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:49:18,111 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-27 23:49:18,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:49:18,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:49:18,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:18,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:49:18,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:49:18,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:49:18,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 23:49:18,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:49:18,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:49:18,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:49:18,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:49:18,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:49:18,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:49:18,157 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [14190604] [2020-10-27 23:49:18,158 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:49:18,159 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 23:49:18,160 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156728050] [2020-10-27 23:49:18,160 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 23:49:18,160 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:49:18,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 23:49:18,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-27 23:49:18,162 INFO L87 Difference]: Start difference. First operand 1222 states and 1864 transitions. Second operand 7 states. [2020-10-27 23:49:18,472 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 170 [2020-10-27 23:49:19,341 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-27 23:49:19,629 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 170 [2020-10-27 23:49:19,883 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 167 [2020-10-27 23:49:20,124 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2020-10-27 23:49:21,209 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-27 23:49:21,476 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 170 [2020-10-27 23:49:21,938 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 171 [2020-10-27 23:49:21,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:49:21,981 INFO L93 Difference]: Finished difference Result 6220 states and 9633 transitions. [2020-10-27 23:49:21,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-27 23:49:21,982 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 85 [2020-10-27 23:49:21,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:49:22,004 INFO L225 Difference]: With dead ends: 6220 [2020-10-27 23:49:22,004 INFO L226 Difference]: Without dead ends: 5680 [2020-10-27 23:49:22,008 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2020-10-27 23:49:22,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5680 states. [2020-10-27 23:49:22,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5680 to 1771. [2020-10-27 23:49:22,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1771 states. [2020-10-27 23:49:22,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1771 states to 1771 states and 2698 transitions. [2020-10-27 23:49:22,229 INFO L78 Accepts]: Start accepts. Automaton has 1771 states and 2698 transitions. Word has length 85 [2020-10-27 23:49:22,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:49:22,229 INFO L481 AbstractCegarLoop]: Abstraction has 1771 states and 2698 transitions. [2020-10-27 23:49:22,229 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 23:49:22,229 INFO L276 IsEmpty]: Start isEmpty. Operand 1771 states and 2698 transitions. [2020-10-27 23:49:22,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-27 23:49:22,231 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:49:22,232 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:49:22,232 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 23:49:22,232 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:49:22,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:49:22,233 INFO L82 PathProgramCache]: Analyzing trace with hash -227186124, now seen corresponding path program 1 times [2020-10-27 23:49:22,233 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:49:22,233 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1329364039] [2020-10-27 23:49:22,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:49:22,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:49:22,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:22,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:22,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:22,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:22,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:22,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:22,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:23,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:23,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:26,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:26,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:26,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:27,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:27,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:49:27,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-27 23:49:27,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-27 23:49:27,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-27 23:49:27,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:49:27,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 23:49:27,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-27 23:49:27,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 23:49:27,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:49:27,543 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-27 23:49:27,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:49:27,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:49:27,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:27,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:49:27,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:49:27,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:49:27,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 23:49:27,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:49:27,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:49:27,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:49:27,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:49:27,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:49:27,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:49:27,586 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1329364039] [2020-10-27 23:49:27,586 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:49:27,586 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 23:49:27,586 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456094376] [2020-10-27 23:49:27,587 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 23:49:27,587 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:49:27,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 23:49:27,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-27 23:49:27,588 INFO L87 Difference]: Start difference. First operand 1771 states and 2698 transitions. Second operand 7 states. [2020-10-27 23:49:27,890 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 170 [2020-10-27 23:49:28,706 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-27 23:49:28,979 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 170 [2020-10-27 23:49:29,233 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2020-10-27 23:49:29,539 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 167 [2020-10-27 23:49:30,648 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 170 [2020-10-27 23:49:30,920 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-27 23:49:31,466 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 171 [2020-10-27 23:49:31,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:49:31,558 INFO L93 Difference]: Finished difference Result 7288 states and 11259 transitions. [2020-10-27 23:49:31,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-27 23:49:31,559 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 85 [2020-10-27 23:49:31,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:49:31,583 INFO L225 Difference]: With dead ends: 7288 [2020-10-27 23:49:31,584 INFO L226 Difference]: Without dead ends: 6290 [2020-10-27 23:49:31,588 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2020-10-27 23:49:31,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6290 states. [2020-10-27 23:49:31,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6290 to 2285. [2020-10-27 23:49:31,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2285 states. [2020-10-27 23:49:31,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2285 states to 2285 states and 3494 transitions. [2020-10-27 23:49:31,956 INFO L78 Accepts]: Start accepts. Automaton has 2285 states and 3494 transitions. Word has length 85 [2020-10-27 23:49:31,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:49:31,957 INFO L481 AbstractCegarLoop]: Abstraction has 2285 states and 3494 transitions. [2020-10-27 23:49:31,957 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 23:49:31,957 INFO L276 IsEmpty]: Start isEmpty. Operand 2285 states and 3494 transitions. [2020-10-27 23:49:31,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-27 23:49:31,959 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:49:31,960 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:49:31,960 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 23:49:31,960 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:49:31,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:49:31,961 INFO L82 PathProgramCache]: Analyzing trace with hash 1611854424, now seen corresponding path program 1 times [2020-10-27 23:49:31,961 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:49:31,961 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [170456157] [2020-10-27 23:49:31,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:49:31,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:49:32,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:32,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:32,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:32,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:32,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:32,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:32,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:34,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:34,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:36,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:49:36,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-27 23:49:36,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 23:49:36,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-27 23:49:36,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:49:36,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:49:36,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-27 23:49:36,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-27 23:49:36,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:49:37,325 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-27 23:49:37,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:49:37,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:49:37,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:37,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:49:37,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:49:37,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:49:37,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 23:49:37,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:49:37,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:49:37,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:49:37,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:49:37,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:49:37,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:49:37,358 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [170456157] [2020-10-27 23:49:37,359 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:49:37,359 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 23:49:37,359 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305037282] [2020-10-27 23:49:37,359 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 23:49:37,359 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:49:37,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 23:49:37,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 23:49:37,360 INFO L87 Difference]: Start difference. First operand 2285 states and 3494 transitions. Second operand 6 states. [2020-10-27 23:49:37,689 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2020-10-27 23:49:38,384 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2020-10-27 23:49:38,699 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 171 [2020-10-27 23:49:39,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:49:39,492 INFO L93 Difference]: Finished difference Result 5921 states and 9138 transitions. [2020-10-27 23:49:39,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 23:49:39,492 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 85 [2020-10-27 23:49:39,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:49:39,505 INFO L225 Difference]: With dead ends: 5921 [2020-10-27 23:49:39,505 INFO L226 Difference]: Without dead ends: 4102 [2020-10-27 23:49:39,511 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-10-27 23:49:39,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4102 states. [2020-10-27 23:49:40,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4102 to 4096. [2020-10-27 23:49:40,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4096 states. [2020-10-27 23:49:40,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4096 states to 4096 states and 6276 transitions. [2020-10-27 23:49:40,026 INFO L78 Accepts]: Start accepts. Automaton has 4096 states and 6276 transitions. Word has length 85 [2020-10-27 23:49:40,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:49:40,027 INFO L481 AbstractCegarLoop]: Abstraction has 4096 states and 6276 transitions. [2020-10-27 23:49:40,027 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 23:49:40,027 INFO L276 IsEmpty]: Start isEmpty. Operand 4096 states and 6276 transitions. [2020-10-27 23:49:40,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-27 23:49:40,029 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:49:40,029 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:49:40,030 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 23:49:40,030 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:49:40,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:49:40,030 INFO L82 PathProgramCache]: Analyzing trace with hash -1619289489, now seen corresponding path program 1 times [2020-10-27 23:49:40,030 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:49:40,031 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [797216566] [2020-10-27 23:49:40,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:49:40,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:49:40,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:40,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:40,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:40,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:40,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:40,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:40,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:40,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:40,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:41,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:41,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:41,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:41,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:42,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:42,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:45,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:49:45,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-27 23:49:45,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-27 23:49:45,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-27 23:49:45,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:49:45,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:49:45,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-27 23:49:45,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-27 23:49:45,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:49:45,387 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-27 23:49:45,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:49:45,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:49:45,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:45,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:49:45,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:49:45,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:49:45,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 23:49:45,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:49:45,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:49:45,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:49:45,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:49:45,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:49:45,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:49:45,422 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [797216566] [2020-10-27 23:49:45,423 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:49:45,423 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 23:49:45,423 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687215731] [2020-10-27 23:49:45,423 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 23:49:45,423 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:49:45,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 23:49:45,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 23:49:45,424 INFO L87 Difference]: Start difference. First operand 4096 states and 6276 transitions. Second operand 6 states. [2020-10-27 23:49:45,716 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 167 [2020-10-27 23:49:46,619 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2020-10-27 23:49:46,930 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 167 [2020-10-27 23:49:49,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:49:49,666 INFO L93 Difference]: Finished difference Result 18409 states and 28377 transitions. [2020-10-27 23:49:49,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 23:49:49,666 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 85 [2020-10-27 23:49:49,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:49:49,706 INFO L225 Difference]: With dead ends: 18409 [2020-10-27 23:49:49,707 INFO L226 Difference]: Without dead ends: 16610 [2020-10-27 23:49:49,715 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2020-10-27 23:49:49,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16610 states. [2020-10-27 23:49:50,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16610 to 6772. [2020-10-27 23:49:50,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6772 states. [2020-10-27 23:49:50,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6772 states to 6772 states and 10398 transitions. [2020-10-27 23:49:50,607 INFO L78 Accepts]: Start accepts. Automaton has 6772 states and 10398 transitions. Word has length 85 [2020-10-27 23:49:50,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:49:50,608 INFO L481 AbstractCegarLoop]: Abstraction has 6772 states and 10398 transitions. [2020-10-27 23:49:50,608 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 23:49:50,608 INFO L276 IsEmpty]: Start isEmpty. Operand 6772 states and 10398 transitions. [2020-10-27 23:49:50,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-27 23:49:50,610 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:49:50,610 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:49:50,610 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 23:49:50,611 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:49:50,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:49:50,611 INFO L82 PathProgramCache]: Analyzing trace with hash 218560162, now seen corresponding path program 1 times [2020-10-27 23:49:50,611 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:49:50,611 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [353905581] [2020-10-27 23:49:50,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:49:50,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:49:50,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:50,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:50,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:50,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:50,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:51,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:51,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:52,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:52,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:53,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:53,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:53,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:55,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:49:55,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-27 23:49:55,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-27 23:49:55,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 23:49:55,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:49:55,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:49:55,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 64 [2020-10-27 23:49:55,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 23:49:55,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:49:55,899 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-27 23:49:55,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:49:55,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:49:55,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:55,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:49:55,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:49:55,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:49:55,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 23:49:55,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:49:55,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:49:55,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:49:55,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:49:55,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:49:55,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:49:55,933 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [353905581] [2020-10-27 23:49:55,933 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:49:55,934 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:49:55,934 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354729471] [2020-10-27 23:49:55,934 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:49:55,934 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:49:55,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:49:55,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:49:55,935 INFO L87 Difference]: Start difference. First operand 6772 states and 10398 transitions. Second operand 4 states. [2020-10-27 23:49:56,192 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-27 23:49:57,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:49:57,467 INFO L93 Difference]: Finished difference Result 13002 states and 20034 transitions. [2020-10-27 23:49:57,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:49:57,467 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 85 [2020-10-27 23:49:57,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:49:57,486 INFO L225 Difference]: With dead ends: 13002 [2020-10-27 23:49:57,486 INFO L226 Difference]: Without dead ends: 6775 [2020-10-27 23:49:57,500 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:49:57,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6775 states. [2020-10-27 23:49:58,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6775 to 6772. [2020-10-27 23:49:58,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6772 states. [2020-10-27 23:49:58,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6772 states to 6772 states and 10370 transitions. [2020-10-27 23:49:58,366 INFO L78 Accepts]: Start accepts. Automaton has 6772 states and 10370 transitions. Word has length 85 [2020-10-27 23:49:58,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:49:58,366 INFO L481 AbstractCegarLoop]: Abstraction has 6772 states and 10370 transitions. [2020-10-27 23:49:58,366 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 23:49:58,366 INFO L276 IsEmpty]: Start isEmpty. Operand 6772 states and 10370 transitions. [2020-10-27 23:49:58,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-27 23:49:58,369 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:49:58,370 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:49:58,370 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 23:49:58,370 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:49:58,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:49:58,371 INFO L82 PathProgramCache]: Analyzing trace with hash -1841220543, now seen corresponding path program 1 times [2020-10-27 23:49:58,371 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:49:58,371 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2060147010] [2020-10-27 23:49:58,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:49:58,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:49:58,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:58,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:58,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:58,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:58,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:58,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:59,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:00,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:00,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:00,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:00,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:00,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:00,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:03,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:50:03,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-27 23:50:03,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-27 23:50:03,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-27 23:50:03,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:50:03,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:50:03,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-27 23:50:03,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 23:50:03,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:50:03,674 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-27 23:50:03,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:50:03,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:50:03,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:03,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:50:03,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:50:03,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:50:03,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 23:50:03,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:50:03,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:50:03,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:50:03,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:50:03,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:50:03,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:50:03,700 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2060147010] [2020-10-27 23:50:03,700 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:50:03,701 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:50:03,701 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482568213] [2020-10-27 23:50:03,701 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:50:03,701 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:50:03,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:50:03,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:50:03,702 INFO L87 Difference]: Start difference. First operand 6772 states and 10370 transitions. Second operand 4 states. [2020-10-27 23:50:04,407 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2020-10-27 23:50:06,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:50:06,272 INFO L93 Difference]: Finished difference Result 18554 states and 28406 transitions. [2020-10-27 23:50:06,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:50:06,272 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 85 [2020-10-27 23:50:06,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:50:06,306 INFO L225 Difference]: With dead ends: 18554 [2020-10-27 23:50:06,307 INFO L226 Difference]: Without dead ends: 12327 [2020-10-27 23:50:06,321 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:50:06,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12327 states. [2020-10-27 23:50:07,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12327 to 12324. [2020-10-27 23:50:07,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12324 states. [2020-10-27 23:50:07,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12324 states to 12324 states and 18630 transitions. [2020-10-27 23:50:07,846 INFO L78 Accepts]: Start accepts. Automaton has 12324 states and 18630 transitions. Word has length 85 [2020-10-27 23:50:07,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:50:07,846 INFO L481 AbstractCegarLoop]: Abstraction has 12324 states and 18630 transitions. [2020-10-27 23:50:07,846 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 23:50:07,846 INFO L276 IsEmpty]: Start isEmpty. Operand 12324 states and 18630 transitions. [2020-10-27 23:50:07,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-27 23:50:07,850 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:50:07,850 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:50:07,850 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 23:50:07,850 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:50:07,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:50:07,851 INFO L82 PathProgramCache]: Analyzing trace with hash 800695065, now seen corresponding path program 1 times [2020-10-27 23:50:07,851 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:50:07,851 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1070411326] [2020-10-27 23:50:07,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:50:07,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:50:07,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:07,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:07,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:08,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:08,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:08,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:08,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:11,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:11,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:11,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:12,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:12,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:12,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:50:12,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-27 23:50:12,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-27 23:50:12,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 23:50:12,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:50:12,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 23:50:12,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-27 23:50:12,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-27 23:50:12,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:50:13,336 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-27 23:50:13,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:50:13,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:50:13,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:13,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:50:13,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:50:13,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:50:13,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 23:50:13,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:50:13,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:50:13,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:50:13,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:50:13,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:50:13,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:50:13,378 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1070411326] [2020-10-27 23:50:13,378 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:50:13,379 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 23:50:13,379 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746814973] [2020-10-27 23:50:13,379 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 23:50:13,379 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:50:13,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 23:50:13,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-27 23:50:13,380 INFO L87 Difference]: Start difference. First operand 12324 states and 18630 transitions. Second operand 10 states. [2020-10-27 23:50:13,746 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 170 [2020-10-27 23:50:14,997 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2020-10-27 23:50:21,282 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 167 [2020-10-27 23:50:31,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:50:31,117 INFO L93 Difference]: Finished difference Result 132956 states and 198870 transitions. [2020-10-27 23:50:31,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-27 23:50:31,117 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 85 [2020-10-27 23:50:31,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:50:31,583 INFO L225 Difference]: With dead ends: 132956 [2020-10-27 23:50:31,584 INFO L226 Difference]: Without dead ends: 120989 [2020-10-27 23:50:31,633 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=197, Invalid=673, Unknown=0, NotChecked=0, Total=870 [2020-10-27 23:50:31,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120989 states. [2020-10-27 23:50:34,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120989 to 12305. [2020-10-27 23:50:34,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12305 states. [2020-10-27 23:50:34,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12305 states to 12305 states and 18396 transitions. [2020-10-27 23:50:34,747 INFO L78 Accepts]: Start accepts. Automaton has 12305 states and 18396 transitions. Word has length 85 [2020-10-27 23:50:34,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:50:34,747 INFO L481 AbstractCegarLoop]: Abstraction has 12305 states and 18396 transitions. [2020-10-27 23:50:34,747 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 23:50:34,747 INFO L276 IsEmpty]: Start isEmpty. Operand 12305 states and 18396 transitions. [2020-10-27 23:50:34,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-27 23:50:34,751 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:50:34,751 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:50:34,752 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 23:50:34,752 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:50:34,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:50:34,753 INFO L82 PathProgramCache]: Analyzing trace with hash 1184478510, now seen corresponding path program 1 times [2020-10-27 23:50:34,753 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:50:34,753 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [540320088] [2020-10-27 23:50:34,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:50:34,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:50:34,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:34,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:34,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:35,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:35,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:35,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:35,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:35,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:36,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:36,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:37,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:39,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:50:39,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-27 23:50:39,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-27 23:50:39,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-27 23:50:39,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:50:39,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 23:50:39,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-27 23:50:39,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-27 23:50:39,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:50:40,107 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 14 [2020-10-27 23:50:40,461 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-27 23:50:40,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:50:40,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:50:40,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:40,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:50:40,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:50:40,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:50:40,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 23:50:40,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:50:40,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:50:40,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:50:40,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:50:40,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:50:40,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:50:40,507 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [540320088] [2020-10-27 23:50:40,507 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:50:40,507 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 23:50:40,508 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149663859] [2020-10-27 23:50:40,508 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 23:50:40,508 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:50:40,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 23:50:40,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-27 23:50:40,513 INFO L87 Difference]: Start difference. First operand 12305 states and 18396 transitions. Second operand 10 states. [2020-10-27 23:50:40,821 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 170 [2020-10-27 23:50:42,399 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2020-10-27 23:50:50,986 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 167 [2020-10-27 23:51:01,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:51:01,943 INFO L93 Difference]: Finished difference Result 135072 states and 201351 transitions. [2020-10-27 23:51:01,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-27 23:51:01,944 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 85 [2020-10-27 23:51:01,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:51:02,145 INFO L225 Difference]: With dead ends: 135072 [2020-10-27 23:51:02,145 INFO L226 Difference]: Without dead ends: 122967 [2020-10-27 23:51:02,190 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=197, Invalid=673, Unknown=0, NotChecked=0, Total=870 [2020-10-27 23:51:02,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122967 states. [2020-10-27 23:51:05,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122967 to 12417. [2020-10-27 23:51:05,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12417 states. [2020-10-27 23:51:05,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12417 states to 12417 states and 18295 transitions. [2020-10-27 23:51:05,119 INFO L78 Accepts]: Start accepts. Automaton has 12417 states and 18295 transitions. Word has length 85 [2020-10-27 23:51:05,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:51:05,119 INFO L481 AbstractCegarLoop]: Abstraction has 12417 states and 18295 transitions. [2020-10-27 23:51:05,119 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 23:51:05,120 INFO L276 IsEmpty]: Start isEmpty. Operand 12417 states and 18295 transitions. [2020-10-27 23:51:05,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-27 23:51:05,123 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:51:05,123 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:51:05,123 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 23:51:05,124 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:51:05,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:51:05,124 INFO L82 PathProgramCache]: Analyzing trace with hash 1680204061, now seen corresponding path program 1 times [2020-10-27 23:51:05,124 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:51:05,125 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1323922540] [2020-10-27 23:51:05,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:51:05,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:51:05,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:51:05,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:51:05,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:51:05,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:51:05,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:51:06,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:51:06,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:51:06,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:51:06,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:51:06,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:51:07,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:51:08,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:51:08,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:51:08,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:51:10,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:51:10,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-27 23:51:10,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-27 23:51:10,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-27 23:51:10,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:51:10,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:51:10,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 23:51:10,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-27 23:51:10,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:51:10,447 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-27 23:51:10,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:51:10,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:51:10,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:51:10,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:51:10,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:51:10,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:51:10,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 23:51:10,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:51:10,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:51:10,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:51:10,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:51:10,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:51:10,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:51:10,473 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1323922540] [2020-10-27 23:51:10,473 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:51:10,474 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 23:51:10,474 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446453390] [2020-10-27 23:51:10,474 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 23:51:10,474 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:51:10,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 23:51:10,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 23:51:10,475 INFO L87 Difference]: Start difference. First operand 12417 states and 18295 transitions. Second operand 6 states. [2020-10-27 23:51:10,763 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 167 [2020-10-27 23:51:12,089 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2020-10-27 23:51:12,379 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 167 [2020-10-27 23:51:27,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:51:27,289 INFO L93 Difference]: Finished difference Result 94518 states and 140445 transitions. [2020-10-27 23:51:27,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 23:51:27,289 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 86 [2020-10-27 23:51:27,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:51:27,406 INFO L225 Difference]: With dead ends: 94518 [2020-10-27 23:51:27,406 INFO L226 Difference]: Without dead ends: 82624 [2020-10-27 23:51:27,443 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 23:51:27,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82624 states. [2020-10-27 23:51:36,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82624 to 47924. [2020-10-27 23:51:36,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47924 states. [2020-10-27 23:51:36,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47924 states to 47924 states and 70979 transitions. [2020-10-27 23:51:36,597 INFO L78 Accepts]: Start accepts. Automaton has 47924 states and 70979 transitions. Word has length 86 [2020-10-27 23:51:36,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:51:36,598 INFO L481 AbstractCegarLoop]: Abstraction has 47924 states and 70979 transitions. [2020-10-27 23:51:36,598 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 23:51:36,598 INFO L276 IsEmpty]: Start isEmpty. Operand 47924 states and 70979 transitions. [2020-10-27 23:51:36,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-27 23:51:36,605 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:51:36,606 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:51:36,606 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 23:51:36,606 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:51:36,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:51:36,606 INFO L82 PathProgramCache]: Analyzing trace with hash -674451767, now seen corresponding path program 1 times [2020-10-27 23:51:36,607 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:51:36,607 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1249467572] [2020-10-27 23:51:36,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:51:36,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:51:36,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:51:36,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:51:36,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:51:36,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:51:37,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:51:37,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:51:37,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:51:37,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:51:38,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:51:41,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:51:41,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-27 23:51:41,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 23:51:41,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-27 23:51:41,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:51:41,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 23:51:41,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 23:51:41,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-27 23:51:41,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:51:42,129 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-27 23:51:42,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:51:42,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:51:42,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:51:42,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:51:42,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:51:42,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:51:42,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 23:51:42,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:51:42,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:51:42,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:51:42,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:51:42,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:51:42,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:51:42,171 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1249467572] [2020-10-27 23:51:42,172 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:51:42,172 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-27 23:51:42,172 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925667544] [2020-10-27 23:51:42,172 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 23:51:42,172 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:51:42,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 23:51:42,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-10-27 23:51:42,173 INFO L87 Difference]: Start difference. First operand 47924 states and 70979 transitions. Second operand 11 states. [2020-10-27 23:51:42,556 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2020-10-27 23:51:45,012 WARN L193 SmtUtils]: Spent 394.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-10-27 23:51:45,318 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 23:51:45,700 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-27 23:52:01,637 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2020-10-27 23:52:02,073 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 180