/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/pals_floodmax.3.4.ufo.BOUNDED-6.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 22:47:22,059 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 22:47:22,063 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 22:47:22,124 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 22:47:22,124 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 22:47:22,130 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 22:47:22,133 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 22:47:22,137 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 22:47:22,140 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 22:47:22,146 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 22:47:22,147 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 22:47:22,149 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 22:47:22,149 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 22:47:22,152 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 22:47:22,154 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 22:47:22,156 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 22:47:22,157 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 22:47:22,161 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 22:47:22,169 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 22:47:22,176 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 22:47:22,178 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 22:47:22,180 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 22:47:22,181 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 22:47:22,184 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 22:47:22,205 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 22:47:22,206 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 22:47:22,207 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 22:47:22,208 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 22:47:22,209 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 22:47:22,211 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 22:47:22,212 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 22:47:22,212 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 22:47:22,214 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 22:47:22,215 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 22:47:22,216 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 22:47:22,217 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 22:47:22,217 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 22:47:22,218 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 22:47:22,218 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 22:47:22,219 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 22:47:22,220 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 22:47:22,227 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 22:47:22,279 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 22:47:22,279 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 22:47:22,284 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 22:47:22,284 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 22:47:22,285 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 22:47:22,285 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 22:47:22,285 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 22:47:22,285 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 22:47:22,285 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 22:47:22,286 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 22:47:22,287 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 22:47:22,287 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 22:47:22,287 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 22:47:22,287 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 22:47:22,288 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 22:47:22,288 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 22:47:22,288 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 22:47:22,288 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 22:47:22,289 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 22:47:22,289 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 22:47:22,289 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 22:47:22,289 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 22:47:22,289 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 22:47:22,290 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 22:47:22,290 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 22:47:22,290 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 22:47:22,290 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 22:47:22,290 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 22:47:22,291 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 22:47:22,291 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 22:47:22,746 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 22:47:22,780 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 22:47:22,788 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 22:47:22,789 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 22:47:22,789 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 22:47:22,790 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_floodmax.3.4.ufo.BOUNDED-6.pals.c [2020-10-27 22:47:22,873 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/62b31bf39/1f7cbb97c10b41af882f914e1c665c1f/FLAGd83f4b0b2 [2020-10-27 22:47:23,606 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 22:47:23,606 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded/pals_floodmax.3.4.ufo.BOUNDED-6.pals.c [2020-10-27 22:47:23,619 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/62b31bf39/1f7cbb97c10b41af882f914e1c665c1f/FLAGd83f4b0b2 [2020-10-27 22:47:23,912 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/62b31bf39/1f7cbb97c10b41af882f914e1c665c1f [2020-10-27 22:47:23,916 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 22:47:23,923 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 22:47:23,928 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 22:47:23,928 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 22:47:23,932 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 22:47:23,934 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 10:47:23" (1/1) ... [2020-10-27 22:47:23,939 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56d5d5a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:47:23, skipping insertion in model container [2020-10-27 22:47:23,940 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 10:47:23" (1/1) ... [2020-10-27 22:47:23,948 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 22:47:24,013 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 22:47:24,274 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 22:47:24,298 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 22:47:24,421 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 22:47:24,446 INFO L208 MainTranslator]: Completed translation [2020-10-27 22:47:24,446 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:47:24 WrapperNode [2020-10-27 22:47:24,446 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 22:47:24,448 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 22:47:24,448 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 22:47:24,448 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 22:47:24,467 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:47:24" (1/1) ... [2020-10-27 22:47:24,468 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:47:24" (1/1) ... [2020-10-27 22:47:24,481 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:47:24" (1/1) ... [2020-10-27 22:47:24,481 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:47:24" (1/1) ... [2020-10-27 22:47:24,510 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:47:24" (1/1) ... [2020-10-27 22:47:24,543 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:47:24" (1/1) ... [2020-10-27 22:47:24,551 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:47:24" (1/1) ... [2020-10-27 22:47:24,563 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 22:47:24,567 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 22:47:24,567 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 22:47:24,567 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 22:47:24,569 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:47:24" (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 22:47:24,665 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 22:47:24,665 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 22:47:24,666 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 22:47:24,666 INFO L138 BoogieDeclarations]: Found implementation of procedure node1 [2020-10-27 22:47:24,667 INFO L138 BoogieDeclarations]: Found implementation of procedure node2 [2020-10-27 22:47:24,667 INFO L138 BoogieDeclarations]: Found implementation of procedure node3 [2020-10-27 22:47:24,667 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-10-27 22:47:24,668 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-10-27 22:47:24,668 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 22:47:24,668 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2020-10-27 22:47:24,669 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 22:47:24,669 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 22:47:24,669 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 22:47:24,669 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 22:47:24,670 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 22:47:24,670 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 22:47:24,671 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-27 22:47:24,671 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 22:47:24,671 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-27 22:47:24,671 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-27 22:47:24,671 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-27 22:47:24,672 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-27 22:47:24,672 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 22:47:24,672 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 22:47:24,672 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 22:47:24,672 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 22:47:24,672 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 22:47:24,673 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 22:47:24,673 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 22:47:24,673 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 22:47:24,673 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 22:47:25,613 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 22:47:25,613 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 22:47:25,615 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 10:47:25 BoogieIcfgContainer [2020-10-27 22:47:25,615 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 22:47:25,617 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 22:47:25,617 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 22:47:25,621 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 22:47:25,621 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 10:47:23" (1/3) ... [2020-10-27 22:47:25,622 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30ae1b32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 10:47:25, skipping insertion in model container [2020-10-27 22:47:25,622 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:47:24" (2/3) ... [2020-10-27 22:47:25,623 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30ae1b32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 10:47:25, skipping insertion in model container [2020-10-27 22:47:25,623 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 10:47:25" (3/3) ... [2020-10-27 22:47:25,625 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.4.ufo.BOUNDED-6.pals.c [2020-10-27 22:47:25,636 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 22:47:25,641 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 22:47:25,655 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 22:47:25,686 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 22:47:25,687 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 22:47:25,687 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 22:47:25,687 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 22:47:25,687 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 22:47:25,687 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 22:47:25,688 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 22:47:25,688 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 22:47:25,712 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states. [2020-10-27 22:47:25,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-27 22:47:25,724 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:47:25,725 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] [2020-10-27 22:47:25,725 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:47:25,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:47:25,732 INFO L82 PathProgramCache]: Analyzing trace with hash 916145648, now seen corresponding path program 1 times [2020-10-27 22:47:25,742 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:47:25,742 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1862754593] [2020-10-27 22:47:25,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:47:26,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:26,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:26,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:26,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-27 22:47:26,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:47:26,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 478 [2020-10-27 22:47:26,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:26,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:47:26,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-27 22:47:26,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:47:26,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 22:47:27,025 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 22:47:27,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:47:27,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:27,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:27,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:27,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:47:27,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:47:27,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 22:47:27,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:27,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:47:27,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:47:27,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:47:27,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-27 22:47:27,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:47:27,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:27,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:27,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:27,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 22:47:27,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:47:27,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 22:47:27,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:27,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:47:27,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:47:27,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:47:27,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:27,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-27 22:47:27,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:27,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:27,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:27,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:47:27,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:47:27,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 22:47:27,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:27,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:47:27,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 22:47:27,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:47:27,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 22:47:27,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-27 22:47:27,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:27,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:27,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:27,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:47:27,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:47:27,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 22:47:27,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:27,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:47:27,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 22:47:27,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:47:27,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 22:47:27,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-27 22:47:27,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:27,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:27,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:27,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:47:27,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:47:27,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 22:47:27,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:27,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:47:27,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 22:47:27,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:47:27,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:27,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-27 22:47:27,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:27,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:27,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:27,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:47:27,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:47:27,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 22:47:27,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:27,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:47:27,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 22:47:27,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:47:27,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:27,322 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 22:47:27,323 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1862754593] [2020-10-27 22:47:27,325 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:47:27,325 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 22:47:27,326 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786200972] [2020-10-27 22:47:27,331 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 22:47:27,331 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:47:27,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 22:47:27,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-27 22:47:27,348 INFO L87 Difference]: Start difference. First operand 159 states. Second operand 6 states. [2020-10-27 22:47:28,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:47:28,624 INFO L93 Difference]: Finished difference Result 263 states and 417 transitions. [2020-10-27 22:47:28,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 22:47:28,626 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 59 [2020-10-27 22:47:28,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:47:28,639 INFO L225 Difference]: With dead ends: 263 [2020-10-27 22:47:28,640 INFO L226 Difference]: Without dead ends: 163 [2020-10-27 22:47:28,644 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-27 22:47:28,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-10-27 22:47:28,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 151. [2020-10-27 22:47:28,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2020-10-27 22:47:28,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 244 transitions. [2020-10-27 22:47:28,709 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 244 transitions. Word has length 59 [2020-10-27 22:47:28,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:47:28,710 INFO L481 AbstractCegarLoop]: Abstraction has 151 states and 244 transitions. [2020-10-27 22:47:28,710 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 22:47:28,710 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 244 transitions. [2020-10-27 22:47:28,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-27 22:47:28,714 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:47:28,714 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] [2020-10-27 22:47:28,714 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 22:47:28,714 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:47:28,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:47:28,715 INFO L82 PathProgramCache]: Analyzing trace with hash -1327837650, now seen corresponding path program 1 times [2020-10-27 22:47:28,715 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:47:28,716 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1196357968] [2020-10-27 22:47:28,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:47:28,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:28,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:29,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:29,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-27 22:47:29,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:47:29,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 582 [2020-10-27 22:47:29,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:29,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 22:47:29,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-27 22:47:29,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 22:47:29,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:29,730 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 22:47:29,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:47:29,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:29,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:29,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:29,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:47:29,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:47:29,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 22:47:29,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:29,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:47:29,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:47:29,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:47:29,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:29,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:47:29,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:29,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:29,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:29,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 22:47:29,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:47:29,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-27 22:47:29,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:29,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:47:29,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:47:29,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 22:47:29,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:29,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-27 22:47:29,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:29,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:29,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:29,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:47:29,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:47:29,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 22:47:29,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:29,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:47:29,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 22:47:29,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:47:29,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:29,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-27 22:47:29,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:29,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:29,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:29,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:47:29,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:47:29,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 22:47:29,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:29,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:47:29,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 22:47:29,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:47:29,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:30,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-27 22:47:30,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:30,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:30,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:30,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:47:30,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:47:30,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 22:47:30,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:30,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:47:30,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 22:47:30,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:47:30,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:30,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-27 22:47:30,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:30,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:30,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:30,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:47:30,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:47:30,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 22:47:30,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:30,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:47:30,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 22:47:30,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:47:30,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:30,050 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 22:47:30,050 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1196357968] [2020-10-27 22:47:30,051 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:47:30,051 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 22:47:30,051 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423218020] [2020-10-27 22:47:30,053 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 22:47:30,053 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:47:30,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 22:47:30,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-27 22:47:30,055 INFO L87 Difference]: Start difference. First operand 151 states and 244 transitions. Second operand 10 states. [2020-10-27 22:47:30,677 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-27 22:47:30,991 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 180 [2020-10-27 22:47:32,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:47:32,608 INFO L93 Difference]: Finished difference Result 264 states and 416 transitions. [2020-10-27 22:47:32,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 22:47:32,610 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 59 [2020-10-27 22:47:32,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:47:32,615 INFO L225 Difference]: With dead ends: 264 [2020-10-27 22:47:32,615 INFO L226 Difference]: Without dead ends: 172 [2020-10-27 22:47:32,617 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2020-10-27 22:47:32,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-10-27 22:47:32,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 151. [2020-10-27 22:47:32,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2020-10-27 22:47:32,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 217 transitions. [2020-10-27 22:47:32,646 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 217 transitions. Word has length 59 [2020-10-27 22:47:32,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:47:32,647 INFO L481 AbstractCegarLoop]: Abstraction has 151 states and 217 transitions. [2020-10-27 22:47:32,647 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 22:47:32,647 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 217 transitions. [2020-10-27 22:47:32,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-27 22:47:32,650 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:47:32,651 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 22:47:32,651 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 22:47:32,651 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:47:32,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:47:32,652 INFO L82 PathProgramCache]: Analyzing trace with hash 242313367, now seen corresponding path program 1 times [2020-10-27 22:47:32,652 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:47:32,652 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1319183602] [2020-10-27 22:47:32,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:47:32,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:32,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:32,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:32,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:34,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:37,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:37,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-27 22:47:37,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 22:47:37,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-27 22:47:37,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:37,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 22:47:37,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-27 22:47:37,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-27 22:47:37,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 22:47:38,067 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 22:47:38,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:47:38,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:38,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:38,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:38,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:47:38,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:47:38,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 22:47:38,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:38,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:47:38,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:47:38,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:47:38,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:38,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:47:38,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:38,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:38,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:38,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-27 22:47:38,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:47:38,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-27 22:47:38,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:38,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:47:38,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:47:38,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-27 22:47:38,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:38,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 22:47:38,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:38,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:38,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:38,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:47:38,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:47:38,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 22:47:38,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:38,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:47:38,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:47:38,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 22:47:38,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:38,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-27 22:47:38,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:38,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:38,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:38,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:47:38,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:47:38,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 22:47:38,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:38,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:47:38,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:47:38,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 22:47:38,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:38,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-27 22:47:38,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:38,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:38,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:38,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:47:38,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:47:38,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 22:47:38,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:38,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:47:38,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:47:38,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 22:47:38,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:38,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-27 22:47:38,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:38,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:38,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:38,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:47:38,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:47:38,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 22:47:38,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:38,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:47:38,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 22:47:38,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 22:47:38,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:38,520 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 22:47:38,520 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1319183602] [2020-10-27 22:47:38,520 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:47:38,521 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-27 22:47:38,521 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773354042] [2020-10-27 22:47:38,521 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 22:47:38,522 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:47:38,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 22:47:38,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2020-10-27 22:47:38,523 INFO L87 Difference]: Start difference. First operand 151 states and 217 transitions. Second operand 13 states. [2020-10-27 22:47:38,847 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-27 22:47:39,452 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-10-27 22:47:39,745 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-27 22:47:42,197 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-27 22:47:42,550 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 22:47:42,870 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 180 [2020-10-27 22:47:46,356 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 70 [2020-10-27 22:47:47,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:47:47,661 INFO L93 Difference]: Finished difference Result 864 states and 1333 transitions. [2020-10-27 22:47:47,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-10-27 22:47:47,662 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 85 [2020-10-27 22:47:47,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:47:47,671 INFO L225 Difference]: With dead ends: 864 [2020-10-27 22:47:47,671 INFO L226 Difference]: Without dead ends: 778 [2020-10-27 22:47:47,675 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 794 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=637, Invalid=2119, Unknown=0, NotChecked=0, Total=2756 [2020-10-27 22:47:47,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 778 states. [2020-10-27 22:47:47,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 778 to 640. [2020-10-27 22:47:47,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 640 states. [2020-10-27 22:47:47,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 640 states to 640 states and 978 transitions. [2020-10-27 22:47:47,805 INFO L78 Accepts]: Start accepts. Automaton has 640 states and 978 transitions. Word has length 85 [2020-10-27 22:47:47,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:47:47,805 INFO L481 AbstractCegarLoop]: Abstraction has 640 states and 978 transitions. [2020-10-27 22:47:47,806 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-27 22:47:47,806 INFO L276 IsEmpty]: Start isEmpty. Operand 640 states and 978 transitions. [2020-10-27 22:47:47,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-27 22:47:47,811 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:47:47,812 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 22:47:47,812 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 22:47:47,812 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:47:47,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:47:47,813 INFO L82 PathProgramCache]: Analyzing trace with hash -1141940013, now seen corresponding path program 1 times [2020-10-27 22:47:47,813 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:47:47,813 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1857987098] [2020-10-27 22:47:47,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:47:47,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:47,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:47,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:47,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:48,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:49,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:52,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:52,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-27 22:47:52,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 22:47:52,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-27 22:47:52,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:52,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 22:47:52,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-27 22:47:52,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-27 22:47:52,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:53,209 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 22:47:53,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:47:53,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:53,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:53,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:53,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:47:53,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:47:53,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 22:47:53,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:53,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:47:53,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:47:53,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:47:53,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:53,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:47:53,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:53,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:53,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:53,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-27 22:47:53,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:47:53,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-27 22:47:53,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:53,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:47:53,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:47:53,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-27 22:47:53,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:53,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 22:47:53,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:53,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:53,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:53,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:47:53,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:47:53,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 22:47:53,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:53,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:47:53,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:47:53,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 22:47:53,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 22:47:53,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-27 22:47:53,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:53,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:53,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:53,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:47:53,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:47:53,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 22:47:53,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:53,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:47:53,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:47:53,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 22:47:53,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:53,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-27 22:47:53,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:53,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:53,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:53,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:47:53,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:47:53,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 22:47:53,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:53,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:47:53,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:47:53,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 22:47:53,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:53,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-27 22:47:53,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:53,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:53,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:53,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:47:53,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:47:53,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 22:47:53,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:53,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 22:47:53,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 22:47:53,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 22:47:53,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:53,670 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 22:47:53,670 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1857987098] [2020-10-27 22:47:53,671 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:47:53,671 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-27 22:47:53,671 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573264325] [2020-10-27 22:47:53,673 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-27 22:47:53,673 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:47:53,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-27 22:47:53,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2020-10-27 22:47:53,674 INFO L87 Difference]: Start difference. First operand 640 states and 978 transitions. Second operand 14 states. [2020-10-27 22:47:54,040 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2020-10-27 22:47:54,693 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-10-27 22:47:55,018 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-27 22:47:55,354 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-27 22:47:57,963 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 22:47:58,298 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-27 22:47:58,659 WARN L193 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-27 22:47:58,990 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 180 [2020-10-27 22:48:00,472 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 73 [2020-10-27 22:48:01,779 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 70 [2020-10-27 22:48:03,437 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 22:48:03,875 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-27 22:48:07,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:48:07,876 INFO L93 Difference]: Finished difference Result 3141 states and 4961 transitions. [2020-10-27 22:48:07,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2020-10-27 22:48:07,885 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 86 [2020-10-27 22:48:07,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:48:07,907 INFO L225 Difference]: With dead ends: 3141 [2020-10-27 22:48:07,907 INFO L226 Difference]: Without dead ends: 2566 [2020-10-27 22:48:07,914 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1586 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=946, Invalid=3884, Unknown=0, NotChecked=0, Total=4830 [2020-10-27 22:48:07,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2566 states. [2020-10-27 22:48:08,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2566 to 1770. [2020-10-27 22:48:08,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1770 states. [2020-10-27 22:48:08,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1770 states to 1770 states and 2773 transitions. [2020-10-27 22:48:08,114 INFO L78 Accepts]: Start accepts. Automaton has 1770 states and 2773 transitions. Word has length 86 [2020-10-27 22:48:08,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:48:08,115 INFO L481 AbstractCegarLoop]: Abstraction has 1770 states and 2773 transitions. [2020-10-27 22:48:08,115 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-27 22:48:08,115 INFO L276 IsEmpty]: Start isEmpty. Operand 1770 states and 2773 transitions. [2020-10-27 22:48:08,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-27 22:48:08,119 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:48:08,119 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:48:08,119 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 22:48:08,120 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:48:08,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:48:08,120 INFO L82 PathProgramCache]: Analyzing trace with hash 1588612416, now seen corresponding path program 1 times [2020-10-27 22:48:08,120 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:48:08,121 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [55896398] [2020-10-27 22:48:08,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:48:08,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:48:08,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:08,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:08,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:09,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:09,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:13,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:48:13,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-27 22:48:13,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 22:48:13,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-27 22:48:13,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:48:13,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 22:48:13,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-27 22:48:13,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-27 22:48:13,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:48:13,487 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 22:48:13,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:48:13,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:48:13,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:13,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:48:13,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:48:13,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:48:13,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 22:48:13,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:48:13,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:48:13,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:48:13,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:48:13,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:48:13,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:48:13,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:48:13,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:13,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:48:13,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-27 22:48:13,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:48:13,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-27 22:48:13,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:48:13,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 22:48:13,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:48:13,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-27 22:48:13,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:48:13,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 22:48:13,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:48:13,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:13,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:48:13,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:48:13,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:48:13,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 22:48:13,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:48:13,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:48:13,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:48:13,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 22:48:13,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:48:13,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-27 22:48:13,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:48:13,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:13,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:48:13,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:48:13,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:48:13,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 22:48:13,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:48:13,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:48:13,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:48:13,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 22:48:13,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:48:13,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-27 22:48:13,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:48:13,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:13,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:48:13,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:48:13,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:48:13,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 22:48:13,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:48:13,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:48:13,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:48:13,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 22:48:13,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:48:13,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-27 22:48:13,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:48:13,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:13,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:48:13,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 22:48:13,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:48:13,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 22:48:13,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:48:13,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:48:13,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 22:48:13,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 22:48:13,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:48:13,861 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 22:48:13,862 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [55896398] [2020-10-27 22:48:13,862 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:48:13,862 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 22:48:13,863 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161316507] [2020-10-27 22:48:13,864 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 22:48:13,864 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:48:13,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 22:48:13,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-27 22:48:13,865 INFO L87 Difference]: Start difference. First operand 1770 states and 2773 transitions. Second operand 10 states. [2020-10-27 22:48:14,193 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-27 22:48:14,866 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-27 22:48:15,623 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 68 [2020-10-27 22:48:16,153 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 22:48:16,773 WARN L193 SmtUtils]: Spent 597.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 180 [2020-10-27 22:48:17,050 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 66 [2020-10-27 22:48:18,308 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 66 [2020-10-27 22:48:18,981 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 72 [2020-10-27 22:48:19,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:48:19,402 INFO L93 Difference]: Finished difference Result 5255 states and 8236 transitions. [2020-10-27 22:48:19,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-27 22:48:19,402 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 87 [2020-10-27 22:48:19,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:48:19,426 INFO L225 Difference]: With dead ends: 5255 [2020-10-27 22:48:19,426 INFO L226 Difference]: Without dead ends: 3573 [2020-10-27 22:48:19,433 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=162, Invalid=488, Unknown=0, NotChecked=0, Total=650 [2020-10-27 22:48:19,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3573 states. [2020-10-27 22:48:19,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3573 to 3087. [2020-10-27 22:48:19,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3087 states. [2020-10-27 22:48:19,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3087 states to 3087 states and 4834 transitions. [2020-10-27 22:48:19,752 INFO L78 Accepts]: Start accepts. Automaton has 3087 states and 4834 transitions. Word has length 87 [2020-10-27 22:48:19,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:48:19,752 INFO L481 AbstractCegarLoop]: Abstraction has 3087 states and 4834 transitions. [2020-10-27 22:48:19,753 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 22:48:19,753 INFO L276 IsEmpty]: Start isEmpty. Operand 3087 states and 4834 transitions. [2020-10-27 22:48:19,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-27 22:48:19,757 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:48:19,758 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:48:19,758 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 22:48:19,758 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:48:19,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:48:19,759 INFO L82 PathProgramCache]: Analyzing trace with hash 1617601184, now seen corresponding path program 1 times [2020-10-27 22:48:19,759 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:48:19,760 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1819600811] [2020-10-27 22:48:19,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:48:19,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:48:19,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:19,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:19,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:20,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:20,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:20,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:24,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:48:24,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-27 22:48:24,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 22:48:24,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-27 22:48:24,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:48:24,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:48:24,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-10-27 22:48:24,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 22:48:24,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:48:25,143 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 22:48:25,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:48:25,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:48:25,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:25,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:48:25,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:48:25,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:48:25,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 22:48:25,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:48:25,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:48:25,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:48:25,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:48:25,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:48:25,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:48:25,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:48:25,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:25,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:48:25,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-27 22:48:25,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:48:25,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-27 22:48:25,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:48:25,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:48:25,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:48:25,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-27 22:48:25,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:48:25,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 22:48:25,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:48:25,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:25,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:48:25,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 22:48:25,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:48:25,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 22:48:25,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:48:25,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:48:25,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:48:25,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 22:48:25,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:48:25,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-27 22:48:25,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:48:25,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:25,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:48:25,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:48:25,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:48:25,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 22:48:25,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:48:25,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:48:25,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 22:48:25,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:48:25,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:48:25,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-27 22:48:25,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:48:25,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:25,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:48:25,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:48:25,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:48:25,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 22:48:25,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:48:25,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:48:25,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 22:48:25,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:48:25,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:48:25,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-27 22:48:25,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:48:25,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:25,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:48:25,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:48:25,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:48:25,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:48:25,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:48:25,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:48:25,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 22:48:25,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:48:25,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:48:25,432 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 22:48:25,432 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1819600811] [2020-10-27 22:48:25,433 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:48:25,433 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-27 22:48:25,433 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331279961] [2020-10-27 22:48:25,434 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 22:48:25,434 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:48:25,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 22:48:25,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-27 22:48:25,435 INFO L87 Difference]: Start difference. First operand 3087 states and 4834 transitions. Second operand 8 states. [2020-10-27 22:48:25,767 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-27 22:48:28,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:48:28,696 INFO L93 Difference]: Finished difference Result 8992 states and 14086 transitions. [2020-10-27 22:48:28,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 22:48:28,697 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 88 [2020-10-27 22:48:28,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:48:28,736 INFO L225 Difference]: With dead ends: 8992 [2020-10-27 22:48:28,736 INFO L226 Difference]: Without dead ends: 5981 [2020-10-27 22:48:28,748 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2020-10-27 22:48:28,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5981 states. [2020-10-27 22:48:29,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5981 to 5266. [2020-10-27 22:48:29,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5266 states. [2020-10-27 22:48:29,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5266 states to 5266 states and 8157 transitions. [2020-10-27 22:48:29,287 INFO L78 Accepts]: Start accepts. Automaton has 5266 states and 8157 transitions. Word has length 88 [2020-10-27 22:48:29,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:48:29,288 INFO L481 AbstractCegarLoop]: Abstraction has 5266 states and 8157 transitions. [2020-10-27 22:48:29,288 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 22:48:29,288 INFO L276 IsEmpty]: Start isEmpty. Operand 5266 states and 8157 transitions. [2020-10-27 22:48:29,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-27 22:48:29,289 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:48:29,290 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:48:29,290 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 22:48:29,290 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:48:29,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:48:29,291 INFO L82 PathProgramCache]: Analyzing trace with hash -1265841252, now seen corresponding path program 1 times [2020-10-27 22:48:29,291 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:48:29,291 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [604866675] [2020-10-27 22:48:29,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:48:29,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:48:29,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:29,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:29,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:29,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:30,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:34,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:48:34,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-27 22:48:34,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 22:48:34,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-27 22:48:34,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:48:34,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 22:48:34,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-27 22:48:34,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-27 22:48:34,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:48:34,643 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 22:48:34,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:48:34,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:48:34,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:34,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:48:34,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:48:34,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:48:34,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 22:48:34,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:48:34,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:48:34,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:48:34,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:48:34,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:48:34,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:48:34,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:48:34,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:34,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:48:34,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-27 22:48:34,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:48:34,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-27 22:48:34,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:48:34,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 22:48:34,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:48:34,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 22:48:34,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:48:34,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 22:48:34,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:48:34,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:34,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:48:34,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:48:34,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:48:34,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 22:48:34,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:48:34,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:48:34,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:48:34,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 22:48:34,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:48:34,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-27 22:48:34,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:48:34,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:34,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:48:34,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:48:34,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:48:34,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 22:48:34,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:48:34,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:48:34,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:48:34,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 22:48:34,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:48:34,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-27 22:48:34,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:48:34,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:34,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:48:34,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:48:34,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:48:34,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 22:48:34,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:48:34,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:48:34,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:48:34,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 22:48:34,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:48:34,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-27 22:48:34,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:48:34,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:34,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:48:34,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 22:48:34,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:48:34,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 22:48:34,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:48:34,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:48:34,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 22:48:34,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 22:48:34,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:48:34,969 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 22:48:34,970 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [604866675] [2020-10-27 22:48:34,970 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:48:34,970 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 22:48:34,970 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437563657] [2020-10-27 22:48:34,971 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 22:48:34,971 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:48:34,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 22:48:34,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-27 22:48:34,976 INFO L87 Difference]: Start difference. First operand 5266 states and 8157 transitions. Second operand 10 states. [2020-10-27 22:48:35,293 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-27 22:48:35,927 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-10-27 22:48:37,295 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-27 22:48:37,640 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 180 [2020-10-27 22:48:42,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:48:42,089 INFO L93 Difference]: Finished difference Result 29250 states and 45333 transitions. [2020-10-27 22:48:42,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-27 22:48:42,090 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 88 [2020-10-27 22:48:42,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:48:42,224 INFO L225 Difference]: With dead ends: 29250 [2020-10-27 22:48:42,224 INFO L226 Difference]: Without dead ends: 24062 [2020-10-27 22:48:42,254 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 258 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=254, Invalid=802, Unknown=0, NotChecked=0, Total=1056 [2020-10-27 22:48:42,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24062 states. [2020-10-27 22:48:44,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24062 to 20978. [2020-10-27 22:48:44,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20978 states. [2020-10-27 22:48:44,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20978 states to 20978 states and 32343 transitions. [2020-10-27 22:48:44,274 INFO L78 Accepts]: Start accepts. Automaton has 20978 states and 32343 transitions. Word has length 88 [2020-10-27 22:48:44,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:48:44,275 INFO L481 AbstractCegarLoop]: Abstraction has 20978 states and 32343 transitions. [2020-10-27 22:48:44,275 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 22:48:44,275 INFO L276 IsEmpty]: Start isEmpty. Operand 20978 states and 32343 transitions. [2020-10-27 22:48:44,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-27 22:48:44,279 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:48:44,280 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:48:44,280 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 22:48:44,280 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:48:44,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:48:44,281 INFO L82 PathProgramCache]: Analyzing trace with hash 1094066356, now seen corresponding path program 1 times [2020-10-27 22:48:44,281 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:48:44,282 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1499484198] [2020-10-27 22:48:44,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:48:44,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:48:44,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:44,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:44,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:44,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:44,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:45,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:49,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:49,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:48:49,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-27 22:48:49,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 22:48:49,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-27 22:48:49,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:48:49,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:48:49,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-10-27 22:48:49,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-27 22:48:49,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:48:49,688 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 22:48:49,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:48:49,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:48:49,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:49,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:48:49,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:48:49,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:48:49,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 22:48:49,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:48:49,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:48:49,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:48:49,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:48:49,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:48:49,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:48:49,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:48:49,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:49,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:48:49,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-27 22:48:49,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:48:49,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-27 22:48:49,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:48:49,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:48:49,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:48:49,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-27 22:48:49,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:48:49,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 22:48:49,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:48:49,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:49,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:48:49,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:48:49,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:48:49,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 22:48:49,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:48:49,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:48:49,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:48:49,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 22:48:49,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:48:49,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-27 22:48:49,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:48:49,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:49,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:48:49,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:48:49,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:48:49,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 22:48:49,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:48:49,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:48:49,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:48:49,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 22:48:49,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:48:49,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-27 22:48:49,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:48:49,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:49,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:48:49,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 22:48:49,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:48:49,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 22:48:49,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:48:49,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:48:49,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:48:49,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 22:48:49,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:48:49,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-27 22:48:49,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:48:49,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:49,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:48:49,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:48:49,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:48:49,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 22:48:49,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:48:49,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:48:49,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 22:48:49,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:48:49,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:48:49,983 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 22:48:49,984 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1499484198] [2020-10-27 22:48:49,984 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:48:49,984 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-27 22:48:49,984 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654270094] [2020-10-27 22:48:49,985 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 22:48:49,985 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:48:49,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 22:48:49,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-27 22:48:49,987 INFO L87 Difference]: Start difference. First operand 20978 states and 32343 transitions. Second operand 8 states. [2020-10-27 22:48:50,327 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-27 22:48:55,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:48:55,853 INFO L93 Difference]: Finished difference Result 62300 states and 96073 transitions. [2020-10-27 22:48:55,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 22:48:55,854 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 88 [2020-10-27 22:48:55,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:48:56,049 INFO L225 Difference]: With dead ends: 62300 [2020-10-27 22:48:56,049 INFO L226 Difference]: Without dead ends: 41400 [2020-10-27 22:48:56,116 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2020-10-27 22:48:56,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41400 states. [2020-10-27 22:48:59,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41400 to 36753. [2020-10-27 22:48:59,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36753 states. [2020-10-27 22:48:59,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36753 states to 36753 states and 55623 transitions. [2020-10-27 22:48:59,304 INFO L78 Accepts]: Start accepts. Automaton has 36753 states and 55623 transitions. Word has length 88 [2020-10-27 22:48:59,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:48:59,305 INFO L481 AbstractCegarLoop]: Abstraction has 36753 states and 55623 transitions. [2020-10-27 22:48:59,305 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 22:48:59,305 INFO L276 IsEmpty]: Start isEmpty. Operand 36753 states and 55623 transitions. [2020-10-27 22:48:59,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-27 22:48:59,307 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:48:59,307 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:48:59,307 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 22:48:59,307 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:48:59,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:48:59,308 INFO L82 PathProgramCache]: Analyzing trace with hash 1924320073, now seen corresponding path program 1 times [2020-10-27 22:48:59,308 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:48:59,308 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1726784717] [2020-10-27 22:48:59,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:48:59,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:48:59,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:59,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:59,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:59,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:59,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:59,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:49:04,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:49:04,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:49:04,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-27 22:49:04,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 22:49:04,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-27 22:49:04,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:49:04,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:49:04,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-27 22:49:04,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-27 22:49:04,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:49:04,732 WARN L193 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 22:49:04,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:49:04,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:49:04,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:49:04,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:49:04,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:49:04,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:49:04,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 22:49:04,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:49:04,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:49:04,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:49:04,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:49:04,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:49:04,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:49:04,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:49:04,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:49:04,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:49:04,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-27 22:49:04,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:49:04,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-27 22:49:04,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:49:04,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:49:04,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:49:04,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-27 22:49:04,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:49:04,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 22:49:04,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:49:04,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:49:04,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:49:04,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:49:04,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:49:04,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 22:49:04,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:49:04,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:49:04,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:49:04,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 22:49:04,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:49:04,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-27 22:49:04,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:49:04,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:49:04,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:49:04,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 22:49:04,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:49:04,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 22:49:04,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:49:04,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:49:04,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:49:04,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 22:49:04,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:49:04,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-27 22:49:04,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:49:04,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:49:04,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:49:04,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:49:04,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:49:04,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 22:49:04,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:49:04,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:49:04,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 22:49:04,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:49:04,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:49:04,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-27 22:49:04,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:49:05,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:49:05,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:49:05,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:49:05,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:49:05,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 22:49:05,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:49:05,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:49:05,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 22:49:05,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:49:05,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:49:05,022 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 22:49:05,023 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1726784717] [2020-10-27 22:49:05,023 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:49:05,023 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-27 22:49:05,023 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146863655] [2020-10-27 22:49:05,024 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 22:49:05,024 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:49:05,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 22:49:05,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-27 22:49:05,025 INFO L87 Difference]: Start difference. First operand 36753 states and 55623 transitions. Second operand 8 states. [2020-10-27 22:49:05,321 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-27 22:49:11,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:49:11,125 INFO L93 Difference]: Finished difference Result 107020 states and 161960 transitions. [2020-10-27 22:49:11,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 22:49:11,125 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 88 [2020-10-27 22:49:11,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:49:11,479 INFO L225 Difference]: With dead ends: 107020 [2020-10-27 22:49:11,479 INFO L226 Difference]: Without dead ends: 70345 [2020-10-27 22:49:11,576 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2020-10-27 22:49:11,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70345 states. [2020-10-27 22:49:17,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70345 to 63478. [2020-10-27 22:49:17,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63478 states. [2020-10-27 22:49:17,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63478 states to 63478 states and 93870 transitions. [2020-10-27 22:49:17,360 INFO L78 Accepts]: Start accepts. Automaton has 63478 states and 93870 transitions. Word has length 88 [2020-10-27 22:49:17,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:49:17,361 INFO L481 AbstractCegarLoop]: Abstraction has 63478 states and 93870 transitions. [2020-10-27 22:49:17,361 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 22:49:17,361 INFO L276 IsEmpty]: Start isEmpty. Operand 63478 states and 93870 transitions. [2020-10-27 22:49:17,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-27 22:49:17,362 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:49:17,362 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:49:17,362 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 22:49:17,362 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:49:17,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:49:17,363 INFO L82 PathProgramCache]: Analyzing trace with hash -176075785, now seen corresponding path program 1 times [2020-10-27 22:49:17,363 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:49:17,363 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [480188670] [2020-10-27 22:49:17,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:49:17,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:49:17,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:49:17,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:49:17,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:49:18,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:49:18,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:49:21,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:49:21,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 22:49:21,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 22:49:21,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4368 [2020-10-27 22:49:21,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:49:21,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:49:21,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-27 22:49:21,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-27 22:49:21,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:49:22,055 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 22:49:22,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:49:22,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:49:22,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:49:22,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:49:22,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:49:22,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:49:22,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 22:49:22,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:49:22,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:49:22,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:49:22,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:49:22,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:49:22,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:49:22,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:49:22,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:49:22,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:49:22,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-27 22:49:22,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:49:22,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-27 22:49:22,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:49:22,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:49:22,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:49:22,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 22:49:22,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:49:22,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 22:49:22,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:49:22,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:49:22,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:49:22,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:49:22,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:49:22,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 22:49:22,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:49:22,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:49:22,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:49:22,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 22:49:22,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:49:22,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-27 22:49:22,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:49:22,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:49:22,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:49:22,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:49:22,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:49:22,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 22:49:22,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:49:22,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:49:22,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:49:22,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 22:49:22,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:49:22,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-27 22:49:22,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:49:22,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:49:22,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:49:22,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:49:22,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:49:22,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 22:49:22,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:49:22,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:49:22,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:49:22,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 22:49:22,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:49:22,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-27 22:49:22,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:49:22,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:49:22,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:49:22,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 22:49:22,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:49:22,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:49:22,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:49:22,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:49:22,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 22:49:22,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:49:22,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:49:22,338 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 22:49:22,339 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [480188670] [2020-10-27 22:49:22,339 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:49:22,339 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 22:49:22,339 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080570075] [2020-10-27 22:49:22,340 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 22:49:22,340 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:49:22,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 22:49:22,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-27 22:49:22,341 INFO L87 Difference]: Start difference. First operand 63478 states and 93870 transitions. Second operand 9 states. [2020-10-27 22:49:22,649 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-10-27 22:49:25,205 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-27 22:49:29,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:49:29,644 INFO L93 Difference]: Finished difference Result 141965 states and 210186 transitions. [2020-10-27 22:49:29,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-27 22:49:29,644 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 91 [2020-10-27 22:49:29,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:49:30,099 INFO L225 Difference]: With dead ends: 141965 [2020-10-27 22:49:30,099 INFO L226 Difference]: Without dead ends: 78565 [2020-10-27 22:49:30,223 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=103, Invalid=239, Unknown=0, NotChecked=0, Total=342 [2020-10-27 22:49:30,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78565 states. [2020-10-27 22:49:35,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78565 to 69079. [2020-10-27 22:49:35,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69079 states. [2020-10-27 22:49:35,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69079 states to 69079 states and 102282 transitions. [2020-10-27 22:49:35,974 INFO L78 Accepts]: Start accepts. Automaton has 69079 states and 102282 transitions. Word has length 91 [2020-10-27 22:49:35,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:49:35,974 INFO L481 AbstractCegarLoop]: Abstraction has 69079 states and 102282 transitions. [2020-10-27 22:49:35,974 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 22:49:35,974 INFO L276 IsEmpty]: Start isEmpty. Operand 69079 states and 102282 transitions. [2020-10-27 22:49:35,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-27 22:49:35,976 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:49:35,976 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:49:35,976 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 22:49:35,976 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:49:35,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:49:35,977 INFO L82 PathProgramCache]: Analyzing trace with hash 443841640, now seen corresponding path program 1 times [2020-10-27 22:49:35,977 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:49:35,977 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1089332114] [2020-10-27 22:49:35,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:49:36,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:49:36,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:49:36,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:49:36,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:49:36,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:49:36,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:49:37,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:49:41,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:49:41,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-27 22:49:41,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 22:49:41,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-27 22:49:41,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:49:41,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:49:41,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-27 22:49:41,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-27 22:49:41,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:49:41,309 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 22:49:41,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:49:41,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:49:41,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:49:41,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:49:41,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:49:41,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:49:41,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 22:49:41,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:49:41,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:49:41,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:49:41,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:49:41,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:49:41,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:49:41,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:49:41,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:49:41,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:49:41,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-27 22:49:41,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:49:41,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-27 22:49:41,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:49:41,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:49:41,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:49:41,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 22:49:41,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:49:41,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 22:49:41,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:49:41,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:49:41,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:49:41,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:49:41,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:49:41,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 22:49:41,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:49:41,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:49:41,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:49:41,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 22:49:41,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:49:41,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-27 22:49:41,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:49:41,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:49:41,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:49:41,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:49:41,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:49:41,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 22:49:41,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:49:41,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:49:41,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:49:41,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 22:49:41,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:49:41,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-27 22:49:41,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:49:41,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:49:41,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:49:41,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 22:49:41,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:49:41,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 22:49:41,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:49:41,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:49:41,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-27 22:49:41,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:49:41,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:49:41,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-27 22:49:41,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:49:41,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:49:41,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:49:41,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 22:49:41,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:49:41,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 22:49:41,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:49:41,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:49:41,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 22:49:41,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:49:41,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:49:41,582 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 22:49:41,582 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1089332114] [2020-10-27 22:49:41,582 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:49:41,582 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 22:49:41,583 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690075427] [2020-10-27 22:49:41,583 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 22:49:41,583 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:49:41,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 22:49:41,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-27 22:49:41,584 INFO L87 Difference]: Start difference. First operand 69079 states and 102282 transitions. Second operand 9 states. [2020-10-27 22:49:41,880 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-10-27 22:49:44,393 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-10-27 22:49:49,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:49:49,539 INFO L93 Difference]: Finished difference Result 164309 states and 243953 transitions. [2020-10-27 22:49:49,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-27 22:49:49,539 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 93 [2020-10-27 22:49:49,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:49:50,027 INFO L225 Difference]: With dead ends: 164309 [2020-10-27 22:49:50,027 INFO L226 Difference]: Without dead ends: 95317 [2020-10-27 22:49:50,169 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2020-10-27 22:49:50,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95317 states. [2020-10-27 22:49:56,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95317 to 83579. [2020-10-27 22:49:56,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83579 states. [2020-10-27 22:49:56,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83579 states to 83579 states and 123959 transitions. [2020-10-27 22:49:56,752 INFO L78 Accepts]: Start accepts. Automaton has 83579 states and 123959 transitions. Word has length 93 [2020-10-27 22:49:56,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:49:56,752 INFO L481 AbstractCegarLoop]: Abstraction has 83579 states and 123959 transitions. [2020-10-27 22:49:56,752 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 22:49:56,753 INFO L276 IsEmpty]: Start isEmpty. Operand 83579 states and 123959 transitions. [2020-10-27 22:49:56,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-27 22:49:56,754 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:49:56,754 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:49:56,754 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 22:49:56,754 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:49:56,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:49:56,755 INFO L82 PathProgramCache]: Analyzing trace with hash -1976309127, now seen corresponding path program 1 times [2020-10-27 22:49:56,755 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:49:56,755 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [317779363] [2020-10-27 22:49:56,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:49:56,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:49:57,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:49:57,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:49:57,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:49:57,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:49:57,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:49:57,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:49:58,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:50:02,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:50:02,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-27 22:50:02,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 22:50:02,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-27 22:50:02,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:50:02,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:50:02,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-27 22:50:02,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-27 22:50:02,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:50:02,308 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 22:50:02,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:50:02,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:50:02,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:50:02,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:50:02,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:50:02,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:50:02,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 22:50:02,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:50:02,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:50:02,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:50:02,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:50:02,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:50:02,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:50:02,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:50:02,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:50:02,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:50:02,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-27 22:50:02,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:50:02,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 22:50:02,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:50:02,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:50:02,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:50:02,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-27 22:50:02,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:50:02,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 22:50:02,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:50:02,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:50:02,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:50:02,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:50:02,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:50:02,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:50:02,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 22:50:02,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:50:02,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:50:02,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:50:02,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 22:50:02,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:50:02,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-27 22:50:02,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:50:02,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:50:02,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:50:02,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 22:50:02,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:50:02,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 22:50:02,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:50:02,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:50:02,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:50:02,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 22:50:02,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:50:02,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-27 22:50:02,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:50:02,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:50:02,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:50:02,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 22:50:02,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:50:02,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 22:50:02,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:50:02,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:50:02,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:50:02,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 22:50:02,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:50:02,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-27 22:50:02,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:50:02,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:50:02,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:50:02,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:50:02,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 22:50:02,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:50:02,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 22:50:02,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:50:02,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:50:02,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 22:50:02,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 22:50:02,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:50:02,551 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 22:50:02,552 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [317779363] [2020-10-27 22:50:02,552 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:50:02,552 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 22:50:02,552 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812138595] [2020-10-27 22:50:02,553 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 22:50:02,553 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:50:02,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 22:50:02,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-27 22:50:02,553 INFO L87 Difference]: Start difference. First operand 83579 states and 123959 transitions. Second operand 10 states. [2020-10-27 22:50:02,892 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-10-27 22:50:05,281 WARN L193 SmtUtils]: Spent 576.00 ms on a formula simplification. DAG size of input: 179 DAG size of output: 177 [2020-10-27 22:50:05,452 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2020-10-27 22:50:06,124 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2020-10-27 22:50:07,501 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-10-27 22:50:07,770 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 66 [2020-10-27 22:50:19,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:50:19,704 INFO L93 Difference]: Finished difference Result 280656 states and 418116 transitions. [2020-10-27 22:50:19,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-27 22:50:19,705 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 95 [2020-10-27 22:50:19,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:50:21,012 INFO L225 Difference]: With dead ends: 280656 [2020-10-27 22:50:21,012 INFO L226 Difference]: Without dead ends: 197152 [2020-10-27 22:50:21,162 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=164, Invalid=486, Unknown=0, NotChecked=0, Total=650 [2020-10-27 22:50:21,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197152 states. [2020-10-27 22:50:34,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197152 to 179650. [2020-10-27 22:50:34,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179650 states. [2020-10-27 22:50:35,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179650 states to 179650 states and 260184 transitions. [2020-10-27 22:50:35,366 INFO L78 Accepts]: Start accepts. Automaton has 179650 states and 260184 transitions. Word has length 95 [2020-10-27 22:50:35,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:50:35,367 INFO L481 AbstractCegarLoop]: Abstraction has 179650 states and 260184 transitions. [2020-10-27 22:50:35,367 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 22:50:35,367 INFO L276 IsEmpty]: Start isEmpty. Operand 179650 states and 260184 transitions. [2020-10-27 22:50:35,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-27 22:50:35,367 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:50:35,367 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:50:35,368 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 22:50:35,368 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:50:35,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:50:35,368 INFO L82 PathProgramCache]: Analyzing trace with hash -117444016, now seen corresponding path program 1 times [2020-10-27 22:50:35,368 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:50:35,368 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1715611744] [2020-10-27 22:50:35,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:50:35,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:50:35,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:50:35,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:50:35,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:50:35,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:50:35,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:50:36,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:50:38,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:50:40,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:50:40,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-27 22:50:40,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 22:50:40,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 22:50:40,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:50:40,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 22:50:40,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-27 22:50:40,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-27 22:50:40,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:50:41,090 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 22:50:41,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:50:41,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:50:41,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:50:41,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:50:41,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:50:41,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:50:41,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 22:50:41,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:50:41,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:50:41,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:50:41,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:50:41,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:50:41,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:50:41,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:50:41,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:50:41,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:50:41,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-27 22:50:41,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:50:41,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-27 22:50:41,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:50:41,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:50:41,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:50:41,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 22:50:41,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:50:41,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 22:50:41,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:50:41,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:50:41,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:50:41,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 22:50:41,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:50:41,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 22:50:41,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:50:41,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:50:41,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:50:41,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 22:50:41,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:50:41,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-27 22:50:41,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:50:41,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:50:41,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:50:41,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 22:50:41,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:50:41,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 22:50:41,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:50:41,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:50:41,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:50:41,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 22:50:41,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:50:41,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-27 22:50:41,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:50:41,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:50:41,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:50:41,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 22:50:41,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:50:41,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 22:50:41,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:50:41,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:50:41,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:50:41,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 22:50:41,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:50:41,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-27 22:50:41,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:50:41,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:50:41,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:50:41,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-27 22:50:41,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:50:41,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 22:50:41,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:50:41,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:50:41,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 22:50:41,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 22:50:41,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:50:41,420 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 22:50:41,420 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1715611744] [2020-10-27 22:50:41,420 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:50:41,421 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-27 22:50:41,421 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653879330] [2020-10-27 22:50:41,421 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 22:50:41,421 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:50:41,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 22:50:41,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-10-27 22:50:41,422 INFO L87 Difference]: Start difference. First operand 179650 states and 260184 transitions. Second operand 13 states. [2020-10-27 22:50:41,747 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 180 [2020-10-27 22:50:42,429 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-27 22:50:42,740 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 180