/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.3.2.ufo.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 22:46:38,472 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 22:46:38,474 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 22:46:38,518 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 22:46:38,519 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 22:46:38,525 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 22:46:38,527 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 22:46:38,532 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 22:46:38,535 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 22:46:38,540 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 22:46:38,541 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 22:46:38,543 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 22:46:38,543 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 22:46:38,546 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 22:46:38,549 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 22:46:38,551 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 22:46:38,552 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 22:46:38,555 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 22:46:38,561 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 22:46:38,569 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 22:46:38,570 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 22:46:38,572 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 22:46:38,573 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 22:46:38,575 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 22:46:38,584 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 22:46:38,584 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 22:46:38,584 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 22:46:38,586 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 22:46:38,586 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 22:46:38,587 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 22:46:38,588 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 22:46:38,589 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 22:46:38,590 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 22:46:38,591 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 22:46:38,592 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 22:46:38,593 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 22:46:38,594 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 22:46:38,594 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 22:46:38,594 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 22:46:38,595 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 22:46:38,595 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 22:46:38,603 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 22:46:38,647 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 22:46:38,648 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 22:46:38,652 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 22:46:38,652 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 22:46:38,652 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 22:46:38,653 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 22:46:38,653 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 22:46:38,653 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 22:46:38,654 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 22:46:38,654 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 22:46:38,655 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 22:46:38,655 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 22:46:38,655 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 22:46:38,655 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 22:46:38,655 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 22:46:38,656 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 22:46:38,656 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 22:46:38,656 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 22:46:38,656 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 22:46:38,656 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 22:46:38,657 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 22:46:38,657 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 22:46:38,657 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 22:46:38,657 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 22:46:38,657 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 22:46:38,657 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 22:46:38,658 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 22:46:38,658 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 22:46:38,658 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 22:46:38,658 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 22:46:39,036 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 22:46:39,064 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 22:46:39,067 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 22:46:39,069 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 22:46:39,069 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 22:46:39,070 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_floodmax.3.2.ufo.UNBOUNDED.pals.c [2020-10-27 22:46:39,159 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dc880cb29/6444ab669c58438183b64328f9162525/FLAG9eeda26c9 [2020-10-27 22:46:39,770 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 22:46:39,770 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded/pals_floodmax.3.2.ufo.UNBOUNDED.pals.c [2020-10-27 22:46:39,782 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dc880cb29/6444ab669c58438183b64328f9162525/FLAG9eeda26c9 [2020-10-27 22:46:40,110 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dc880cb29/6444ab669c58438183b64328f9162525 [2020-10-27 22:46:40,114 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 22:46:40,122 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 22:46:40,126 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 22:46:40,126 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 22:46:40,131 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 22:46:40,131 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 10:46:40" (1/1) ... [2020-10-27 22:46:40,136 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5fbb2b13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:46:40, skipping insertion in model container [2020-10-27 22:46:40,137 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 10:46:40" (1/1) ... [2020-10-27 22:46:40,146 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 22:46:40,207 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 22:46:40,509 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 22:46:40,520 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 22:46:40,630 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 22:46:40,650 INFO L208 MainTranslator]: Completed translation [2020-10-27 22:46:40,651 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:46:40 WrapperNode [2020-10-27 22:46:40,651 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 22:46:40,652 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 22:46:40,652 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 22:46:40,652 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 22:46:40,666 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:46:40" (1/1) ... [2020-10-27 22:46:40,666 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:46:40" (1/1) ... [2020-10-27 22:46:40,679 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:46:40" (1/1) ... [2020-10-27 22:46:40,679 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:46:40" (1/1) ... [2020-10-27 22:46:40,695 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:46:40" (1/1) ... [2020-10-27 22:46:40,709 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:46:40" (1/1) ... [2020-10-27 22:46:40,716 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:46:40" (1/1) ... [2020-10-27 22:46:40,730 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 22:46:40,731 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 22:46:40,731 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 22:46:40,731 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 22:46:40,732 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:46:40" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 22:46:40,816 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 22:46:40,816 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 22:46:40,816 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 22:46:40,817 INFO L138 BoogieDeclarations]: Found implementation of procedure node1 [2020-10-27 22:46:40,817 INFO L138 BoogieDeclarations]: Found implementation of procedure node2 [2020-10-27 22:46:40,818 INFO L138 BoogieDeclarations]: Found implementation of procedure node3 [2020-10-27 22:46:40,818 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-10-27 22:46:40,818 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-10-27 22:46:40,819 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 22:46:40,819 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2020-10-27 22:46:40,820 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 22:46:40,821 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 22:46:40,821 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 22:46:40,821 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 22:46:40,821 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 22:46:40,824 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-27 22:46:40,824 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 22:46:40,824 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-27 22:46:40,824 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 22:46:40,824 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-27 22:46:40,825 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-27 22:46:40,825 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-27 22:46:40,825 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-27 22:46:40,825 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 22:46:40,825 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 22:46:40,825 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 22:46:40,825 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 22:46:40,826 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 22:46:40,826 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 22:46:40,826 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 22:46:40,826 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 22:46:40,826 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 22:46:41,849 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 22:46:41,850 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 22:46:41,852 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 10:46:41 BoogieIcfgContainer [2020-10-27 22:46:41,852 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 22:46:41,854 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 22:46:41,854 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 22:46:41,858 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 22:46:41,858 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 10:46:40" (1/3) ... [2020-10-27 22:46:41,859 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3765badb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 10:46:41, skipping insertion in model container [2020-10-27 22:46:41,859 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:46:40" (2/3) ... [2020-10-27 22:46:41,859 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3765badb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 10:46:41, skipping insertion in model container [2020-10-27 22:46:41,860 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 10:46:41" (3/3) ... [2020-10-27 22:46:41,861 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.2.ufo.UNBOUNDED.pals.c [2020-10-27 22:46:41,890 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 22:46:41,895 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 22:46:41,908 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 22:46:41,934 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 22:46:41,934 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 22:46:41,935 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 22:46:41,935 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 22:46:41,935 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 22:46:41,935 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 22:46:41,935 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 22:46:41,935 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 22:46:41,955 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states. [2020-10-27 22:46:41,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-27 22:46:41,966 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:46:41,967 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 22:46:41,968 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:46:41,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:46:41,974 INFO L82 PathProgramCache]: Analyzing trace with hash 1991455396, now seen corresponding path program 1 times [2020-10-27 22:46:41,983 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:46:41,984 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1539279469] [2020-10-27 22:46:41,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:46:42,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:46:42,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:42,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:46:42,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-27 22:46:42,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:46:42,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 541 [2020-10-27 22:46:42,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:46:42,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:46:42,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-27 22:46:42,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:46:42,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 22:46:43,405 WARN L193 SmtUtils]: Spent 520.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 22:46:43,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:46:43,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:46:43,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:43,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:46:43,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:46:43,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:46:43,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-27 22:46:43,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:46:43,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:46:43,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:46:43,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:46:43,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 22:46:43,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:46:43,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:46:43,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:43,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:46:43,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 22:46:43,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:46:43,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 22:46:43,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:46:43,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:46:43,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:46:43,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:46:43,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:46:43,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-27 22:46:43,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:46:43,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:43,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:46:43,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:46:43,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:46:43,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 22:46:43,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:46:43,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:46:43,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 22:46:43,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:46:43,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 22:46:43,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-27 22:46:43,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:46:43,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:43,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:46:43,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:46:43,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:46:43,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 22:46:43,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:46:43,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:46:43,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 22:46:43,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:46:43,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:46:43,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-27 22:46:43,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:46:43,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:43,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:46:43,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:46:43,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:46:43,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 22:46:43,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:46:43,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:46:43,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 22:46:43,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:46:43,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:46:43,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-27 22:46:43,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:46:43,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:43,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:46:43,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:46:43,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:46:43,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 22:46:43,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:46:43,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:46:43,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 22:46:43,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:46:43,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:46:43,907 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 22:46:43,907 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1539279469] [2020-10-27 22:46:43,909 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:46:43,910 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 22:46:43,910 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561827968] [2020-10-27 22:46:43,915 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 22:46:43,915 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:46:43,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 22:46:43,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-27 22:46:43,932 INFO L87 Difference]: Start difference. First operand 164 states. Second operand 6 states. [2020-10-27 22:46:45,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:46:45,330 INFO L93 Difference]: Finished difference Result 271 states and 432 transitions. [2020-10-27 22:46:45,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 22:46:45,332 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 59 [2020-10-27 22:46:45,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:46:45,345 INFO L225 Difference]: With dead ends: 271 [2020-10-27 22:46:45,345 INFO L226 Difference]: Without dead ends: 171 [2020-10-27 22:46:45,349 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-27 22:46:45,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-10-27 22:46:45,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 156. [2020-10-27 22:46:45,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2020-10-27 22:46:45,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 252 transitions. [2020-10-27 22:46:45,411 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 252 transitions. Word has length 59 [2020-10-27 22:46:45,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:46:45,412 INFO L481 AbstractCegarLoop]: Abstraction has 156 states and 252 transitions. [2020-10-27 22:46:45,412 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 22:46:45,412 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 252 transitions. [2020-10-27 22:46:45,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-27 22:46:45,416 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:46:45,416 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 22:46:45,416 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 22:46:45,416 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:46:45,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:46:45,417 INFO L82 PathProgramCache]: Analyzing trace with hash -252527902, now seen corresponding path program 1 times [2020-10-27 22:46:45,417 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:46:45,418 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [435373112] [2020-10-27 22:46:45,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:46:45,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:46:45,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:46,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:46:46,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-27 22:46:46,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:46:46,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 577 [2020-10-27 22:46:46,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:46:46,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 22:46:46,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-27 22:46:46,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 22:46:46,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:46:46,417 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 22:46:46,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:46:46,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:46:46,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:46,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:46:46,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:46:46,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:46:46,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 22:46:46,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:46:46,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:46:46,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:46:46,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:46:46,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:46:46,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:46:46,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:46:46,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:46,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:46:46,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 22:46:46,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:46:46,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-27 22:46:46,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:46:46,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:46:46,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:46:46,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 22:46:46,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:46:46,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-27 22:46:46,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:46:46,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:46,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:46:46,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:46:46,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:46:46,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 22:46:46,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:46:46,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:46:46,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 22:46:46,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:46:46,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:46:46,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-27 22:46:46,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:46:46,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:46,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:46:46,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:46:46,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:46:46,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 22:46:46,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:46:46,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:46:46,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 22:46:46,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:46:46,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:46:46,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-27 22:46:46,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:46:46,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:46,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:46:46,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:46:46,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:46:46,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 22:46:46,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:46:46,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:46:46,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 22:46:46,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:46:46,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 22:46:46,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-27 22:46:46,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:46:46,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:46,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:46:46,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:46:46,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:46:46,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 22:46:46,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:46:46,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:46:46,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 22:46:46,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:46:46,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 22:46:46,782 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 22:46:46,782 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [435373112] [2020-10-27 22:46:46,782 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:46:46,783 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 22:46:46,783 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760381200] [2020-10-27 22:46:46,785 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 22:46:46,786 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:46:46,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 22:46:46,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-27 22:46:46,787 INFO L87 Difference]: Start difference. First operand 156 states and 252 transitions. Second operand 10 states. [2020-10-27 22:46:47,358 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-27 22:46:47,695 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 180 [2020-10-27 22:46:49,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:46:49,437 INFO L93 Difference]: Finished difference Result 268 states and 421 transitions. [2020-10-27 22:46:49,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 22:46:49,442 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 59 [2020-10-27 22:46:49,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:46:49,449 INFO L225 Difference]: With dead ends: 268 [2020-10-27 22:46:49,449 INFO L226 Difference]: Without dead ends: 171 [2020-10-27 22:46:49,453 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 22:46:49,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-10-27 22:46:49,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 156. [2020-10-27 22:46:49,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2020-10-27 22:46:49,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 225 transitions. [2020-10-27 22:46:49,493 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 225 transitions. Word has length 59 [2020-10-27 22:46:49,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:46:49,496 INFO L481 AbstractCegarLoop]: Abstraction has 156 states and 225 transitions. [2020-10-27 22:46:49,496 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 22:46:49,496 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 225 transitions. [2020-10-27 22:46:49,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-27 22:46:49,501 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:46:49,504 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 22:46:49,504 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 22:46:49,504 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:46:49,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:46:49,505 INFO L82 PathProgramCache]: Analyzing trace with hash -627127477, now seen corresponding path program 1 times [2020-10-27 22:46:49,505 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:46:49,505 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1115923021] [2020-10-27 22:46:49,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:46:49,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:46:49,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:49,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:49,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:51,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:54,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:46:54,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-27 22:46:54,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 22:46:54,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-27 22:46:54,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:46:54,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 22:46:54,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-27 22:46:54,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-27 22:46:54,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 22:46:54,893 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 22:46:54,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:46:54,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:46:54,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:54,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:46:54,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:46:54,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:46:54,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 22:46:54,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:46:54,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:46:54,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:46:54,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:46:54,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:46:54,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:46:54,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:46:54,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:55,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:46:55,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-27 22:46:55,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:46:55,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-27 22:46:55,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:46:55,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:46:55,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:46:55,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-27 22:46:55,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:46:55,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 22:46:55,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:46:55,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:55,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:46:55,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:46:55,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:46:55,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 22:46:55,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:46:55,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:46:55,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:46:55,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 22:46:55,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:46:55,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-27 22:46:55,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:46:55,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:55,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:46:55,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:46:55,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:46:55,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 22:46:55,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:46:55,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:46:55,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:46:55,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 22:46:55,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:46:55,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-27 22:46:55,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:46:55,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:55,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:46:55,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:46:55,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:46:55,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 22:46:55,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:46:55,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:46:55,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:46:55,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 22:46:55,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:46:55,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-27 22:46:55,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:46:55,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:55,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:46:55,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:46:55,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:46:55,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 22:46:55,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:46:55,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:46:55,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 22:46:55,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 22:46:55,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 22:46:55,350 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 22:46:55,352 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1115923021] [2020-10-27 22:46:55,353 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:46:55,353 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-27 22:46:55,353 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610103657] [2020-10-27 22:46:55,354 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 22:46:55,354 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:46:55,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 22:46:55,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2020-10-27 22:46:55,356 INFO L87 Difference]: Start difference. First operand 156 states and 225 transitions. Second operand 13 states. [2020-10-27 22:46:55,683 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-27 22:46:56,303 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-10-27 22:46:56,590 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-27 22:46:58,940 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 22:46:59,222 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 180 [2020-10-27 22:46:59,517 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-27 22:47:02,571 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 70 [2020-10-27 22:47:03,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:47:03,827 INFO L93 Difference]: Finished difference Result 921 states and 1414 transitions. [2020-10-27 22:47:03,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-10-27 22:47:03,828 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 85 [2020-10-27 22:47:03,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:47:03,839 INFO L225 Difference]: With dead ends: 921 [2020-10-27 22:47:03,839 INFO L226 Difference]: Without dead ends: 830 [2020-10-27 22:47:03,843 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 803 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=630, Invalid=2126, Unknown=0, NotChecked=0, Total=2756 [2020-10-27 22:47:03,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 830 states. [2020-10-27 22:47:03,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 830 to 675. [2020-10-27 22:47:03,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 675 states. [2020-10-27 22:47:03,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 675 states to 675 states and 1034 transitions. [2020-10-27 22:47:03,952 INFO L78 Accepts]: Start accepts. Automaton has 675 states and 1034 transitions. Word has length 85 [2020-10-27 22:47:03,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:47:03,952 INFO L481 AbstractCegarLoop]: Abstraction has 675 states and 1034 transitions. [2020-10-27 22:47:03,952 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-27 22:47:03,952 INFO L276 IsEmpty]: Start isEmpty. Operand 675 states and 1034 transitions. [2020-10-27 22:47:03,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-27 22:47:03,959 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:47:03,960 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:47:03,961 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 22:47:03,961 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:47:03,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:47:03,962 INFO L82 PathProgramCache]: Analyzing trace with hash -271491736, now seen corresponding path program 1 times [2020-10-27 22:47:03,962 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:47:03,965 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [246339582] [2020-10-27 22:47:03,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:47:04,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:04,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:04,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:04,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:04,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:04,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:09,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:09,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-27 22:47:09,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 22:47:09,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-27 22:47:09,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:09,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 22:47:09,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-27 22:47:09,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-27 22:47:09,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:09,325 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 22:47:09,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:47:09,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:09,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:09,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:09,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:47:09,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:47:09,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 22:47:09,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:09,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:47:09,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:47:09,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:47:09,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:09,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:47:09,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:09,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:09,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:09,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-27 22:47:09,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:47:09,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-27 22:47:09,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:09,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:47:09,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:47:09,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-27 22:47:09,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:09,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 22:47:09,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:09,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:09,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:09,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:47:09,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:47:09,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 22:47:09,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:09,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:47:09,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:47:09,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 22:47:09,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:09,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-27 22:47:09,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:09,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:09,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:09,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:47:09,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:47:09,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 22:47:09,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:09,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:47:09,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:47:09,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 22:47:09,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:09,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-27 22:47:09,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:09,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:09,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:09,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:47:09,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:47:09,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 22:47:09,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:09,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:47:09,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:47:09,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 22:47:09,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:09,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-27 22:47:09,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:09,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:09,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:09,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:47:09,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:47:09,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 22:47:09,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:09,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 22:47:09,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 22:47:09,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 22:47:09,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:09,777 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 22:47:09,777 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [246339582] [2020-10-27 22:47:09,778 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:47:09,778 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-27 22:47:09,778 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640845092] [2020-10-27 22:47:09,779 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-27 22:47:09,779 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:47:09,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-27 22:47:09,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2020-10-27 22:47:09,780 INFO L87 Difference]: Start difference. First operand 675 states and 1034 transitions. Second operand 14 states. [2020-10-27 22:47:10,183 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2020-10-27 22:47:10,793 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-10-27 22:47:11,086 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-27 22:47:11,381 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-27 22:47:13,870 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-27 22:47:14,162 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 22:47:14,461 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 180 [2020-10-27 22:47:14,778 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-27 22:47:16,347 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 73 [2020-10-27 22:47:18,110 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 70 [2020-10-27 22:47:19,368 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-27 22:47:19,744 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 22:47:23,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:47:23,510 INFO L93 Difference]: Finished difference Result 3391 states and 5309 transitions. [2020-10-27 22:47:23,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2020-10-27 22:47:23,510 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 86 [2020-10-27 22:47:23,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:47:23,531 INFO L225 Difference]: With dead ends: 3391 [2020-10-27 22:47:23,532 INFO L226 Difference]: Without dead ends: 2781 [2020-10-27 22:47:23,539 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1590 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=946, Invalid=3884, Unknown=0, NotChecked=0, Total=4830 [2020-10-27 22:47:23,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2781 states. [2020-10-27 22:47:23,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2781 to 1886. [2020-10-27 22:47:23,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1886 states. [2020-10-27 22:47:23,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1886 states to 1886 states and 2951 transitions. [2020-10-27 22:47:23,741 INFO L78 Accepts]: Start accepts. Automaton has 1886 states and 2951 transitions. Word has length 86 [2020-10-27 22:47:23,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:47:23,741 INFO L481 AbstractCegarLoop]: Abstraction has 1886 states and 2951 transitions. [2020-10-27 22:47:23,741 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-27 22:47:23,742 INFO L276 IsEmpty]: Start isEmpty. Operand 1886 states and 2951 transitions. [2020-10-27 22:47:23,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-27 22:47:23,744 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:47:23,744 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 22:47:23,744 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 22:47:23,745 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:47:23,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:47:23,745 INFO L82 PathProgramCache]: Analyzing trace with hash 561048596, now seen corresponding path program 1 times [2020-10-27 22:47:23,745 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:47:23,746 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1678089589] [2020-10-27 22:47:23,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:47:23,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:23,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:23,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:23,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:24,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:26,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:28,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:28,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-27 22:47:28,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 22:47:28,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-27 22:47:28,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:28,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 22:47:28,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-27 22:47:28,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-27 22:47:28,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:29,129 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 22:47:29,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:47:29,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:29,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:29,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:29,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:47:29,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:47:29,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 22:47:29,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:29,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:47:29,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:47:29,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:47:29,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:29,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:47:29,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:29,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:29,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:29,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-27 22:47:29,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:47:29,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-27 22:47:29,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:29,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 22:47:29,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:47:29,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-27 22:47:29,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:29,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 22:47:29,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:29,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:29,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:29,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:47:29,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:47:29,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 22:47:29,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:29,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:47:29,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:47:29,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 22:47:29,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:29,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-27 22:47:29,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:29,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:29,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:29,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:47:29,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:47:29,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 22:47:29,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:29,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:47:29,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:47:29,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 22:47:29,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:29,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-27 22:47:29,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:29,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:29,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:29,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:47:29,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:47:29,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 22:47:29,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:29,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:47:29,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:47:29,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 22:47:29,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:29,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-27 22:47:29,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:29,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:29,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:29,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 22:47:29,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:47:29,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 22:47:29,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:29,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:47:29,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 22:47:29,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 22:47:29,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:29,429 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 22:47:29,430 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1678089589] [2020-10-27 22:47:29,430 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:47:29,430 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 22:47:29,430 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119830022] [2020-10-27 22:47:29,431 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 22:47:29,431 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:47:29,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 22:47:29,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-27 22:47:29,432 INFO L87 Difference]: Start difference. First operand 1886 states and 2951 transitions. Second operand 10 states. [2020-10-27 22:47:29,767 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-27 22:47:30,377 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-10-27 22:47:32,327 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-27 22:47:32,627 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 180 [2020-10-27 22:47:35,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:47:35,939 INFO L93 Difference]: Finished difference Result 7700 states and 11973 transitions. [2020-10-27 22:47:35,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-27 22:47:35,940 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 87 [2020-10-27 22:47:35,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:47:35,973 INFO L225 Difference]: With dead ends: 7700 [2020-10-27 22:47:35,973 INFO L226 Difference]: Without dead ends: 5904 [2020-10-27 22:47:35,982 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 266 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=261, Invalid=861, Unknown=0, NotChecked=0, Total=1122 [2020-10-27 22:47:35,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5904 states. [2020-10-27 22:47:36,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5904 to 4995. [2020-10-27 22:47:36,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4995 states. [2020-10-27 22:47:36,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4995 states to 4995 states and 7810 transitions. [2020-10-27 22:47:36,365 INFO L78 Accepts]: Start accepts. Automaton has 4995 states and 7810 transitions. Word has length 87 [2020-10-27 22:47:36,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:47:36,365 INFO L481 AbstractCegarLoop]: Abstraction has 4995 states and 7810 transitions. [2020-10-27 22:47:36,366 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 22:47:36,366 INFO L276 IsEmpty]: Start isEmpty. Operand 4995 states and 7810 transitions. [2020-10-27 22:47:36,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-27 22:47:36,368 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:47:36,368 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 22:47:36,369 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 22:47:36,369 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:47:36,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:47:36,369 INFO L82 PathProgramCache]: Analyzing trace with hash -1002237935, now seen corresponding path program 1 times [2020-10-27 22:47:36,369 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:47:36,370 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1486750973] [2020-10-27 22:47:36,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:47:36,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:36,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:36,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:36,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:37,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:37,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:41,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:41,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-27 22:47:41,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 22:47:41,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 22:47:41,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:41,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 22:47:41,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-27 22:47:41,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-27 22:47:41,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:41,697 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 22:47:41,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:47:41,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:41,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:41,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:41,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:47:41,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:47:41,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 22:47:41,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:41,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:47:41,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:47:41,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:47:41,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:41,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:47:41,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:41,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:41,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:41,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-27 22:47:41,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:47:41,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-27 22:47:41,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:41,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 22:47:41,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:47:41,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 22:47:41,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:41,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 22:47:41,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:41,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:41,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:41,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:47:41,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:47:41,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 22:47:41,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:41,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:47:41,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:47:41,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 22:47:41,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:41,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-27 22:47:41,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:41,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:41,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:41,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:47:41,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:47:41,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 22:47:41,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:41,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:47:41,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:47:41,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 22:47:41,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:41,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-27 22:47:41,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:41,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:41,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:41,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:47:41,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:47:41,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 22:47:41,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:41,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:47:41,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:47:41,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 22:47:41,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:41,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-27 22:47:41,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:41,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:41,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:41,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 22:47:41,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:47:41,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 22:47:41,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:41,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:47:41,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 22:47:41,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 22:47:41,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:42,029 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 22:47:42,030 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1486750973] [2020-10-27 22:47:42,031 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:47:42,031 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 22:47:42,032 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119915550] [2020-10-27 22:47:42,033 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 22:47:42,033 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:47:42,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 22:47:42,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-27 22:47:42,034 INFO L87 Difference]: Start difference. First operand 4995 states and 7810 transitions. Second operand 10 states. [2020-10-27 22:47:42,359 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-27 22:47:42,926 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-10-27 22:47:44,391 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 180 [2020-10-27 22:47:44,664 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-27 22:47:48,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:47:48,577 INFO L93 Difference]: Finished difference Result 29136 states and 45192 transitions. [2020-10-27 22:47:48,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-27 22:47:48,578 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 88 [2020-10-27 22:47:48,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:47:48,712 INFO L225 Difference]: With dead ends: 29136 [2020-10-27 22:47:48,712 INFO L226 Difference]: Without dead ends: 24231 [2020-10-27 22:47:48,736 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 259 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=254, Invalid=802, Unknown=0, NotChecked=0, Total=1056 [2020-10-27 22:47:48,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24231 states. [2020-10-27 22:47:50,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24231 to 20428. [2020-10-27 22:47:50,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20428 states. [2020-10-27 22:47:50,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20428 states to 20428 states and 31988 transitions. [2020-10-27 22:47:50,246 INFO L78 Accepts]: Start accepts. Automaton has 20428 states and 31988 transitions. Word has length 88 [2020-10-27 22:47:50,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:47:50,247 INFO L481 AbstractCegarLoop]: Abstraction has 20428 states and 31988 transitions. [2020-10-27 22:47:50,247 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 22:47:50,247 INFO L276 IsEmpty]: Start isEmpty. Operand 20428 states and 31988 transitions. [2020-10-27 22:47:50,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-27 22:47:50,250 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:47:50,250 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] [2020-10-27 22:47:50,250 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 22:47:50,250 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:47:50,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:47:50,251 INFO L82 PathProgramCache]: Analyzing trace with hash -1583675671, now seen corresponding path program 1 times [2020-10-27 22:47:50,251 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:47:50,256 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1164245340] [2020-10-27 22:47:50,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:47:50,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:50,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:50,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:50,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:50,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:50,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:50,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:51,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:55,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:55,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-27 22:47:55,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 22:47:55,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-27 22:47:55,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:55,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 22:47:55,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-10-27 22:47:55,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 22:47:55,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:55,629 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 22:47:55,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:47:55,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:55,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:55,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:55,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:47:55,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:47:55,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 22:47:55,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:55,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:47:55,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:47:55,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:47:55,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:55,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:47:55,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:55,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:55,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:55,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-27 22:47:55,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:47:55,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 22:47:55,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:55,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:47:55,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:47:55,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:47:55,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:55,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 22:47:55,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:55,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:55,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:55,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:47:55,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:47:55,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 22:47:55,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:55,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:47:55,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:47:55,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:47:55,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:55,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-27 22:47:55,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:55,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:55,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:55,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:47:55,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:47:55,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 22:47:55,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:55,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:47:55,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:47:55,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:47:55,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:55,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-27 22:47:55,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:55,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:55,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:55,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 22:47:55,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:47:55,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 22:47:55,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:55,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 22:47:55,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 22:47:55,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 22:47:55,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:55,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-27 22:47:55,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:55,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:55,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:55,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:47:55,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:47:55,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:47:55,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:55,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:47:55,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 22:47:55,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:47:55,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:55,931 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 22:47:55,931 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1164245340] [2020-10-27 22:47:55,932 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:47:55,932 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-27 22:47:55,932 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278403721] [2020-10-27 22:47:55,933 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 22:47:55,933 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:47:55,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 22:47:55,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-27 22:47:55,938 INFO L87 Difference]: Start difference. First operand 20428 states and 31988 transitions. Second operand 8 states. [2020-10-27 22:47:57,588 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 22:48:00,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:48:00,865 INFO L93 Difference]: Finished difference Result 64835 states and 102599 transitions. [2020-10-27 22:48:00,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 22:48:00,866 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 90 [2020-10-27 22:48:00,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:48:01,062 INFO L225 Difference]: With dead ends: 64835 [2020-10-27 22:48:01,062 INFO L226 Difference]: Without dead ends: 44497 [2020-10-27 22:48:01,125 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2020-10-27 22:48:01,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44497 states. [2020-10-27 22:48:04,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44497 to 38219. [2020-10-27 22:48:04,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38219 states. [2020-10-27 22:48:04,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38219 states to 38219 states and 59894 transitions. [2020-10-27 22:48:04,188 INFO L78 Accepts]: Start accepts. Automaton has 38219 states and 59894 transitions. Word has length 90 [2020-10-27 22:48:04,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:48:04,189 INFO L481 AbstractCegarLoop]: Abstraction has 38219 states and 59894 transitions. [2020-10-27 22:48:04,189 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 22:48:04,189 INFO L276 IsEmpty]: Start isEmpty. Operand 38219 states and 59894 transitions. [2020-10-27 22:48:04,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-27 22:48:04,192 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:48:04,192 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] [2020-10-27 22:48:04,192 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 22:48:04,193 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:48:04,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:48:04,206 INFO L82 PathProgramCache]: Analyzing trace with hash -1364820953, now seen corresponding path program 1 times [2020-10-27 22:48:04,206 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:48:04,207 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1725447828] [2020-10-27 22:48:04,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:48:04,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:48:04,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:04,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:04,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:04,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:04,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:05,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:08,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:09,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:48:09,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-27 22:48:09,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 22:48:09,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-27 22:48:09,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:48:09,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:48:09,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-10-27 22:48:09,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-27 22:48:09,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:48:09,602 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 22:48:09,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:48:09,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:48:09,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:09,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:48:09,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:48:09,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:48:09,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 22:48:09,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:48:09,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:48:09,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:48:09,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:48:09,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:48:09,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:48:09,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:48:09,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:09,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:48:09,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-27 22:48:09,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:48:09,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-27 22:48:09,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:48:09,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:48:09,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:48:09,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-27 22:48:09,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:48:09,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 22:48:09,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:48:09,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:09,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:48:09,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:48:09,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:48:09,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 22:48:09,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:48:09,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:48:09,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:48:09,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 22:48:09,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:48:09,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-27 22:48:09,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:48:09,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:09,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:48:09,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:48:09,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:48:09,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 22:48:09,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:48:09,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:48:09,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:48:09,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 22:48:09,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:48:09,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-27 22:48:09,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:48:09,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:09,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:48:09,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 22:48:09,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:48:09,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 22:48:09,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:48:09,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:48:09,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:48:09,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 22:48:09,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:48:09,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-27 22:48:09,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:48:09,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:09,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:48:09,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:48:09,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:48:09,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:48:09,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:48:09,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:48:09,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 22:48:09,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:48:09,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:48:09,885 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 22:48:09,886 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1725447828] [2020-10-27 22:48:09,887 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:48:09,887 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-27 22:48:09,887 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435273888] [2020-10-27 22:48:09,888 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 22:48:09,888 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:48:09,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 22:48:09,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-27 22:48:09,889 INFO L87 Difference]: Start difference. First operand 38219 states and 59894 transitions. Second operand 8 states. [2020-10-27 22:48:10,184 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-27 22:48:12,288 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-27 22:48:16,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:48:16,350 INFO L93 Difference]: Finished difference Result 117458 states and 183647 transitions. [2020-10-27 22:48:16,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-27 22:48:16,350 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 90 [2020-10-27 22:48:16,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:48:17,011 INFO L225 Difference]: With dead ends: 117458 [2020-10-27 22:48:17,012 INFO L226 Difference]: Without dead ends: 79329 [2020-10-27 22:48:17,120 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=88, Invalid=218, Unknown=0, NotChecked=0, Total=306 [2020-10-27 22:48:17,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79329 states. [2020-10-27 22:48:21,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79329 to 68941. [2020-10-27 22:48:21,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68941 states. [2020-10-27 22:48:21,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68941 states to 68941 states and 106526 transitions. [2020-10-27 22:48:21,922 INFO L78 Accepts]: Start accepts. Automaton has 68941 states and 106526 transitions. Word has length 90 [2020-10-27 22:48:21,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:48:21,926 INFO L481 AbstractCegarLoop]: Abstraction has 68941 states and 106526 transitions. [2020-10-27 22:48:21,926 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 22:48:21,926 INFO L276 IsEmpty]: Start isEmpty. Operand 68941 states and 106526 transitions. [2020-10-27 22:48:21,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-27 22:48:21,928 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:48:21,939 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] [2020-10-27 22:48:21,939 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 22:48:21,939 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:48:21,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:48:21,940 INFO L82 PathProgramCache]: Analyzing trace with hash -2071496617, now seen corresponding path program 1 times [2020-10-27 22:48:21,940 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:48:21,940 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2266479] [2020-10-27 22:48:21,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:48:21,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:48:21,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:22,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:22,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:22,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:22,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:22,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:23,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:26,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:48:26,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-27 22:48:26,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 22:48:26,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-27 22:48:26,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:48:26,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 22:48:26,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-10-27 22:48:26,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 22:48:26,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:48:27,258 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 22:48:27,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:48:27,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:48:27,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:27,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:48:27,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:48:27,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:48:27,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 22:48:27,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:48:27,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:48:27,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:48:27,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:48:27,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:48:27,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:48:27,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:48:27,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:27,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:48:27,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-27 22:48:27,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:48:27,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 22:48:27,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:48:27,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:48:27,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:48:27,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:48:27,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 22:48:27,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 22:48:27,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:48:27,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:27,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:48:27,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:48:27,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:48:27,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 22:48:27,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:48:27,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:48:27,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:48:27,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:48:27,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:48:27,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-27 22:48:27,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:48:27,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:27,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:48:27,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 22:48:27,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:48:27,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 22:48:27,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:48:27,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 22:48:27,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 22:48:27,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 22:48:27,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:48:27,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-27 22:48:27,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:48:27,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:27,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:48:27,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:48:27,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:48:27,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 22:48:27,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:48:27,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:48:27,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 22:48:27,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:48:27,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:48:27,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-27 22:48:27,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:48:27,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:27,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:48:27,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:48:27,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:48:27,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 22:48:27,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:48:27,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:48:27,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 22:48:27,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:48:27,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:48:27,501 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 22:48:27,501 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2266479] [2020-10-27 22:48:27,501 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:48:27,501 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-27 22:48:27,502 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214007293] [2020-10-27 22:48:27,502 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 22:48:27,502 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:48:27,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 22:48:27,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-27 22:48:27,503 INFO L87 Difference]: Start difference. First operand 68941 states and 106526 transitions. Second operand 8 states. [2020-10-27 22:48:28,973 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 22:48:36,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:48:36,379 INFO L93 Difference]: Finished difference Result 213268 states and 334932 transitions. [2020-10-27 22:48:36,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 22:48:36,379 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 90 [2020-10-27 22:48:36,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:48:37,173 INFO L225 Difference]: With dead ends: 213268 [2020-10-27 22:48:37,174 INFO L226 Difference]: Without dead ends: 144417 [2020-10-27 22:48:37,304 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2020-10-27 22:48:37,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144417 states. [2020-10-27 22:48:45,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144417 to 127849. [2020-10-27 22:48:45,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127849 states. [2020-10-27 22:48:45,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127849 states to 127849 states and 197219 transitions. [2020-10-27 22:48:45,946 INFO L78 Accepts]: Start accepts. Automaton has 127849 states and 197219 transitions. Word has length 90 [2020-10-27 22:48:45,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:48:45,947 INFO L481 AbstractCegarLoop]: Abstraction has 127849 states and 197219 transitions. [2020-10-27 22:48:45,947 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 22:48:45,947 INFO L276 IsEmpty]: Start isEmpty. Operand 127849 states and 197219 transitions. [2020-10-27 22:48:45,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-27 22:48:45,949 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:48:45,949 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] [2020-10-27 22:48:45,949 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 22:48:45,949 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:48:45,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:48:45,950 INFO L82 PathProgramCache]: Analyzing trace with hash 1713997589, now seen corresponding path program 1 times [2020-10-27 22:48:45,950 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:48:45,950 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1207877470] [2020-10-27 22:48:45,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:48:45,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:48:45,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:46,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:46,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:46,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:46,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:46,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:50,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:50,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:48:50,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-27 22:48:50,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 22:48:50,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-27 22:48:50,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:48:50,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:48:50,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-27 22:48:50,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-27 22:48:50,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:48:51,261 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 22:48:51,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:48:51,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:48:51,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:51,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:48:51,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:48:51,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:48:51,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 22:48:51,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:48:51,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:48:51,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:48:51,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:48:51,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:48:51,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:48:51,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:48:51,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:51,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:48:51,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-27 22:48:51,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:48:51,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 22:48:51,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:48:51,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:48:51,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:48:51,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-27 22:48:51,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:48:51,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 22:48:51,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:48:51,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:51,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:48:51,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:48:51,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:48:51,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 22:48:51,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:48:51,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:48:51,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:48:51,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 22:48:51,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:48:51,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-27 22:48:51,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:48:51,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:51,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:48:51,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 22:48:51,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:48:51,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 22:48:51,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:48:51,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:48:51,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:48:51,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 22:48:51,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:48:51,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-27 22:48:51,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:48:51,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:51,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:48:51,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:48:51,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:48:51,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 22:48:51,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:48:51,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:48:51,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 22:48:51,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:48:51,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 22:48:51,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-27 22:48:51,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:48:51,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:51,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:48:51,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:48:51,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:48:51,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 22:48:51,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:48:51,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:48:51,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 22:48:51,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:48:51,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:48:51,500 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 22:48:51,501 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1207877470] [2020-10-27 22:48:51,501 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:48:51,501 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-27 22:48:51,501 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904342620] [2020-10-27 22:48:51,501 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 22:48:51,502 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:48:51,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 22:48:51,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-27 22:48:51,503 INFO L87 Difference]: Start difference. First operand 127849 states and 197219 transitions. Second operand 8 states. [2020-10-27 22:48:51,812 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-27 22:48:53,638 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-27 22:49:08,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:49:08,044 INFO L93 Difference]: Finished difference Result 379472 states and 586251 transitions. [2020-10-27 22:49:08,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-27 22:49:08,059 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 90 [2020-10-27 22:49:08,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:49:09,168 INFO L225 Difference]: With dead ends: 379472 [2020-10-27 22:49:09,168 INFO L226 Difference]: Without dead ends: 251713 [2020-10-27 22:49:09,405 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=88, Invalid=218, Unknown=0, NotChecked=0, Total=306 [2020-10-27 22:49:09,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251713 states. [2020-10-27 22:49:24,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251713 to 226945. [2020-10-27 22:49:24,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226945 states. [2020-10-27 22:49:25,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226945 states to 226945 states and 343245 transitions. [2020-10-27 22:49:25,400 INFO L78 Accepts]: Start accepts. Automaton has 226945 states and 343245 transitions. Word has length 90 [2020-10-27 22:49:25,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:49:25,400 INFO L481 AbstractCegarLoop]: Abstraction has 226945 states and 343245 transitions. [2020-10-27 22:49:25,400 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 22:49:25,400 INFO L276 IsEmpty]: Start isEmpty. Operand 226945 states and 343245 transitions. [2020-10-27 22:49:25,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-27 22:49:25,401 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:49:25,402 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] [2020-10-27 22:49:25,402 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 22:49:25,402 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:49:25,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:49:25,402 INFO L82 PathProgramCache]: Analyzing trace with hash -1716124345, now seen corresponding path program 1 times [2020-10-27 22:49:25,402 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:49:25,403 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1676951672] [2020-10-27 22:49:25,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:49:25,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:49:25,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:49:25,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:49:25,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:49:25,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:49:25,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:49:26,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:49:27,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:49:27,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:49:30,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:49:30,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-27 22:49:30,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 22:49:30,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-27 22:49:30,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:49:30,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 22:49:30,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 66 [2020-10-27 22:49:30,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 22:49:30,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:49:30,704 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 22:49:30,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:49:30,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:49:30,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:49:30,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:49:30,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:49:30,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:49:30,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 22:49:30,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:49:30,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:49:30,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:49:30,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:49:30,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:49:30,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:49:30,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:49:30,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:49:30,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:49:30,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-27 22:49:30,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:49:30,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 22:49:30,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:49:30,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:49:30,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:49:30,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:49:30,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:49:30,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 22:49:30,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:49:30,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:49:30,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:49:30,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 22:49:30,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:49:30,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 22:49:30,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:49:30,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 22:49:30,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 22:49:30,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 22:49:30,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:49:30,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-27 22:49:30,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:49:30,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:49:30,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:49:30,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:49:30,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:49:30,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:49:30,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:49:30,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:49:30,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 22:49:30,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:49:30,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:49:30,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-27 22:49:30,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:49:30,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:49:30,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:49:30,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:49:30,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:49:30,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:49:30,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:49:30,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:49:30,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 22:49:30,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:49:30,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:49:30,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-27 22:49:30,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:49:30,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:49:30,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:49:30,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:49:30,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:49:30,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 22:49:30,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:49:30,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:49:30,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 22:49:30,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:49:30,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:49:30,908 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 22:49:30,909 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1676951672] [2020-10-27 22:49:30,909 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:49:30,909 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-27 22:49:30,909 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292227386] [2020-10-27 22:49:30,909 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 22:49:30,909 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:49:30,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 22:49:30,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-27 22:49:30,910 INFO L87 Difference]: Start difference. First operand 226945 states and 343245 transitions. Second operand 8 states. [2020-10-27 22:49:31,593 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 22:49:57,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:49:57,980 INFO L93 Difference]: Finished difference Result 657429 states and 1014671 transitions. [2020-10-27 22:49:57,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 22:49:57,980 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 90 [2020-10-27 22:49:57,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:50:00,415 INFO L225 Difference]: With dead ends: 657429 [2020-10-27 22:50:00,416 INFO L226 Difference]: Without dead ends: 430570 [2020-10-27 22:50:01,122 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2020-10-27 22:50:01,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430570 states.