/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.1.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 13:00:00,664 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 13:00:00,668 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 13:00:00,721 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 13:00:00,722 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 13:00:00,724 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 13:00:00,725 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 13:00:00,728 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 13:00:00,730 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 13:00:00,731 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 13:00:00,732 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 13:00:00,734 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 13:00:00,734 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 13:00:00,736 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 13:00:00,737 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 13:00:00,738 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 13:00:00,739 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 13:00:00,740 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 13:00:00,742 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 13:00:00,745 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 13:00:00,746 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 13:00:00,748 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 13:00:00,749 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 13:00:00,750 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 13:00:00,753 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 13:00:00,754 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 13:00:00,754 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 13:00:00,755 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 13:00:00,756 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 13:00:00,757 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 13:00:00,758 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 13:00:00,759 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 13:00:00,760 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 13:00:00,760 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 13:00:00,762 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 13:00:00,786 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 13:00:00,788 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 13:00:00,793 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 13:00:00,794 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 13:00:00,795 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 13:00:00,796 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 13:00:00,804 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 13:00:00,842 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 13:00:00,842 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 13:00:00,844 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 13:00:00,844 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 13:00:00,844 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 13:00:00,845 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 13:00:00,845 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 13:00:00,845 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 13:00:00,845 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 13:00:00,846 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 13:00:00,846 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 13:00:00,846 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 13:00:00,846 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 13:00:00,847 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 13:00:00,847 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 13:00:00,847 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 13:00:00,847 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 13:00:00,848 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 13:00:00,848 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 13:00:00,848 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 13:00:00,848 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 13:00:00,849 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 13:00:00,849 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 13:00:00,849 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 13:00:00,849 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 13:00:00,850 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 13:00:00,850 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 13:00:00,850 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 13:00:00,850 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 13:00:00,851 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 13:00:01,255 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 13:00:01,312 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 13:00:01,316 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 13:00:01,317 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 13:00:01,317 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 13:00:01,319 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.1.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2020-10-29 13:00:01,412 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8a56fca6b/ad7030c8543e40e4ab3ef6085e3c181a/FLAG14a6b20f0 [2020-10-29 13:00:02,207 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 13:00:02,208 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.1.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2020-10-29 13:00:02,229 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8a56fca6b/ad7030c8543e40e4ab3ef6085e3c181a/FLAG14a6b20f0 [2020-10-29 13:00:02,303 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8a56fca6b/ad7030c8543e40e4ab3ef6085e3c181a [2020-10-29 13:00:02,308 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 13:00:02,318 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 13:00:02,320 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 13:00:02,320 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 13:00:02,325 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 13:00:02,326 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 01:00:02" (1/1) ... [2020-10-29 13:00:02,335 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c22b16b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:00:02, skipping insertion in model container [2020-10-29 13:00:02,336 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 01:00:02" (1/1) ... [2020-10-29 13:00:02,344 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 13:00:02,463 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 13:00:03,494 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 13:00:03,523 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 13:00:04,002 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 13:00:04,045 INFO L208 MainTranslator]: Completed translation [2020-10-29 13:00:04,046 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:00:04 WrapperNode [2020-10-29 13:00:04,046 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 13:00:04,047 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 13:00:04,047 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 13:00:04,047 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 13:00:04,059 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:00:04" (1/1) ... [2020-10-29 13:00:04,059 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:00:04" (1/1) ... [2020-10-29 13:00:04,085 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:00:04" (1/1) ... [2020-10-29 13:00:04,086 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:00:04" (1/1) ... [2020-10-29 13:00:04,153 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:00:04" (1/1) ... [2020-10-29 13:00:04,196 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:00:04" (1/1) ... [2020-10-29 13:00:04,204 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:00:04" (1/1) ... [2020-10-29 13:00:04,216 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 13:00:04,217 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 13:00:04,217 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 13:00:04,217 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 13:00:04,218 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:00:04" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 13:00:04,292 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 13:00:04,292 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 13:00:04,292 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 13:00:04,293 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-29 13:00:04,293 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 13:00:04,293 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 13:00:04,293 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 13:00:04,293 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 13:00:04,293 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 13:00:04,294 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-29 13:00:04,294 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-29 13:00:04,294 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-29 13:00:04,294 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-29 13:00:04,294 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-29 13:00:04,294 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-29 13:00:04,295 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-29 13:00:04,295 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-29 13:00:04,295 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-29 13:00:04,295 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-29 13:00:04,295 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-29 13:00:04,295 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-29 13:00:04,295 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 13:00:04,296 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 13:00:04,296 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 13:00:04,296 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 13:00:04,296 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 13:00:04,296 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 13:00:04,296 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 13:00:06,835 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 13:00:06,835 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-29 13:00:06,840 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 01:00:06 BoogieIcfgContainer [2020-10-29 13:00:06,840 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 13:00:06,843 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 13:00:06,843 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 13:00:06,846 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 13:00:06,847 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 01:00:02" (1/3) ... [2020-10-29 13:00:06,848 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d975abc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 01:00:06, skipping insertion in model container [2020-10-29 13:00:06,848 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:00:04" (2/3) ... [2020-10-29 13:00:06,848 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d975abc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 01:00:06, skipping insertion in model container [2020-10-29 13:00:06,848 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 01:00:06" (3/3) ... [2020-10-29 13:00:06,850 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.4.1.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2020-10-29 13:00:06,862 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 13:00:06,869 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 13:00:06,883 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 13:00:06,917 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 13:00:06,917 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 13:00:06,917 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 13:00:06,917 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 13:00:06,918 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 13:00:06,918 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 13:00:06,918 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 13:00:06,918 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 13:00:06,952 INFO L276 IsEmpty]: Start isEmpty. Operand 716 states. [2020-10-29 13:00:06,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2020-10-29 13:00:06,984 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:00:06,985 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:00:06,986 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:00:06,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:00:06,992 INFO L82 PathProgramCache]: Analyzing trace with hash -308476268, now seen corresponding path program 1 times [2020-10-29 13:00:07,002 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:00:07,003 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1054750880] [2020-10-29 13:00:07,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:00:08,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:00:08,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:09,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:09,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:10,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:10,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:10,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:10,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:11,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:11,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:11,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:11,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:11,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:12,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:13,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:00:13,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 305 [2020-10-29 13:00:13,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-29 13:00:13,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-29 13:00:13,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:00:13,080 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:00:13,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:00:13,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:00:13,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-29 13:00:13,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 13:00:14,061 WARN L193 SmtUtils]: Spent 626.00 ms on a formula simplification that was a NOOP. DAG size: 301 [2020-10-29 13:00:14,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:00:14,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:00:14,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:14,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:00:14,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:00:14,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:00:14,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-29 13:00:14,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:00:14,126 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:00:14,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:00:14,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:00:14,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:00:14,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:00:14,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:00:14,394 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1054750880] [2020-10-29 13:00:14,397 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:00:14,398 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:00:14,399 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982559411] [2020-10-29 13:00:14,407 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:00:14,407 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:00:14,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:00:14,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:00:14,431 INFO L87 Difference]: Start difference. First operand 716 states. Second operand 5 states. [2020-10-29 13:00:22,446 WARN L193 SmtUtils]: Spent 716.00 ms on a formula simplification that was a NOOP. DAG size: 307 [2020-10-29 13:00:24,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:00:24,256 INFO L93 Difference]: Finished difference Result 2095 states and 3724 transitions. [2020-10-29 13:00:24,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 13:00:24,258 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 297 [2020-10-29 13:00:24,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:00:24,298 INFO L225 Difference]: With dead ends: 2095 [2020-10-29 13:00:24,299 INFO L226 Difference]: Without dead ends: 1384 [2020-10-29 13:00:24,313 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:00:24,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1384 states. [2020-10-29 13:00:24,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1384 to 1381. [2020-10-29 13:00:24,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1381 states. [2020-10-29 13:00:24,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1381 states to 1381 states and 2146 transitions. [2020-10-29 13:00:24,496 INFO L78 Accepts]: Start accepts. Automaton has 1381 states and 2146 transitions. Word has length 297 [2020-10-29 13:00:24,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:00:24,499 INFO L481 AbstractCegarLoop]: Abstraction has 1381 states and 2146 transitions. [2020-10-29 13:00:24,503 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:00:24,503 INFO L276 IsEmpty]: Start isEmpty. Operand 1381 states and 2146 transitions. [2020-10-29 13:00:24,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2020-10-29 13:00:24,518 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:00:24,520 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:00:24,521 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 13:00:24,521 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:00:24,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:00:24,522 INFO L82 PathProgramCache]: Analyzing trace with hash -1939659583, now seen corresponding path program 1 times [2020-10-29 13:00:24,522 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:00:24,522 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [737263544] [2020-10-29 13:00:24,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:00:24,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:00:24,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:24,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:25,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:25,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:25,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:25,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:26,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:26,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:26,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:26,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:26,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:26,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:26,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:27,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:28,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:28,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:29,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:00:29,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 307 [2020-10-29 13:00:29,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-29 13:00:29,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-29 13:00:29,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:00:29,612 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:00:29,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:00:29,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:00:29,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-10-29 13:00:29,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:00:30,443 WARN L193 SmtUtils]: Spent 615.00 ms on a formula simplification that was a NOOP. DAG size: 301 [2020-10-29 13:00:30,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:00:30,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:00:30,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:30,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:00:30,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:00:30,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:00:30,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-29 13:00:30,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:00:30,480 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:00:30,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:00:30,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:00:30,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:00:30,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:00:30,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:00:30,705 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [737263544] [2020-10-29 13:00:30,705 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:00:30,705 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:00:30,707 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905454492] [2020-10-29 13:00:30,710 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:00:30,711 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:00:30,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:00:30,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:00:30,723 INFO L87 Difference]: Start difference. First operand 1381 states and 2146 transitions. Second operand 5 states. [2020-10-29 13:00:37,477 WARN L193 SmtUtils]: Spent 716.00 ms on a formula simplification that was a NOOP. DAG size: 307 [2020-10-29 13:00:39,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:00:39,228 INFO L93 Difference]: Finished difference Result 4001 states and 6202 transitions. [2020-10-29 13:00:39,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 13:00:39,229 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 299 [2020-10-29 13:00:39,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:00:39,244 INFO L225 Difference]: With dead ends: 4001 [2020-10-29 13:00:39,244 INFO L226 Difference]: Without dead ends: 2672 [2020-10-29 13:00:39,248 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:00:39,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2672 states. [2020-10-29 13:00:39,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2672 to 2669. [2020-10-29 13:00:39,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2669 states. [2020-10-29 13:00:39,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2669 states to 2669 states and 4113 transitions. [2020-10-29 13:00:39,399 INFO L78 Accepts]: Start accepts. Automaton has 2669 states and 4113 transitions. Word has length 299 [2020-10-29 13:00:39,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:00:39,400 INFO L481 AbstractCegarLoop]: Abstraction has 2669 states and 4113 transitions. [2020-10-29 13:00:39,400 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:00:39,400 INFO L276 IsEmpty]: Start isEmpty. Operand 2669 states and 4113 transitions. [2020-10-29 13:00:39,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2020-10-29 13:00:39,409 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:00:39,409 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:00:39,410 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 13:00:39,410 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:00:39,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:00:39,411 INFO L82 PathProgramCache]: Analyzing trace with hash -2045742092, now seen corresponding path program 1 times [2020-10-29 13:00:39,411 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:00:39,411 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [81738771] [2020-10-29 13:00:39,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:00:39,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:00:39,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:39,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:39,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:39,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:39,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:39,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:40,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:40,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:40,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:40,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:40,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:40,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:41,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:41,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:44,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:00:44,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 309 [2020-10-29 13:00:44,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-29 13:00:44,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-29 13:00:44,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:00:44,501 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:00:44,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:00:44,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-29 13:00:44,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 159 [2020-10-29 13:00:44,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:00:45,481 WARN L193 SmtUtils]: Spent 832.00 ms on a formula simplification that was a NOOP. DAG size: 301 [2020-10-29 13:00:45,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:00:45,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:00:45,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:45,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:00:45,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:00:45,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:00:45,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 13:00:45,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:00:45,509 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:00:45,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:00:45,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:00:45,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:00:45,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:00:45,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:00:45,737 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [81738771] [2020-10-29 13:00:45,737 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:00:45,738 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 13:00:45,741 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782737772] [2020-10-29 13:00:45,743 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 13:00:45,743 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:00:45,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 13:00:45,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 13:00:45,746 INFO L87 Difference]: Start difference. First operand 2669 states and 4113 transitions. Second operand 4 states. [2020-10-29 13:00:53,308 WARN L193 SmtUtils]: Spent 721.00 ms on a formula simplification that was a NOOP. DAG size: 306 [2020-10-29 13:00:54,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:00:54,987 INFO L93 Difference]: Finished difference Result 7695 states and 11812 transitions. [2020-10-29 13:00:54,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 13:00:54,991 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 301 [2020-10-29 13:00:54,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:00:55,018 INFO L225 Difference]: With dead ends: 7695 [2020-10-29 13:00:55,019 INFO L226 Difference]: Without dead ends: 5208 [2020-10-29 13:00:55,025 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:00:55,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5208 states. [2020-10-29 13:00:55,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5208 to 5205. [2020-10-29 13:00:55,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5205 states. [2020-10-29 13:00:55,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5205 states to 5205 states and 7970 transitions. [2020-10-29 13:00:55,269 INFO L78 Accepts]: Start accepts. Automaton has 5205 states and 7970 transitions. Word has length 301 [2020-10-29 13:00:55,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:00:55,270 INFO L481 AbstractCegarLoop]: Abstraction has 5205 states and 7970 transitions. [2020-10-29 13:00:55,270 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 13:00:55,270 INFO L276 IsEmpty]: Start isEmpty. Operand 5205 states and 7970 transitions. [2020-10-29 13:00:55,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2020-10-29 13:00:55,284 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:00:55,284 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:00:55,284 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 13:00:55,284 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:00:55,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:00:55,285 INFO L82 PathProgramCache]: Analyzing trace with hash -611430449, now seen corresponding path program 1 times [2020-10-29 13:00:55,285 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:00:55,286 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [929764178] [2020-10-29 13:00:55,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:00:55,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:00:55,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:55,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:55,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:55,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:55,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:56,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:56,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:56,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:56,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:56,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:56,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:57,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:57,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:00:57,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:01:00,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:01:00,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 309 [2020-10-29 13:01:00,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-29 13:01:00,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-29 13:01:00,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:01:00,361 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:01:00,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:01:00,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:01:00,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 158 [2020-10-29 13:01:00,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:01:01,150 WARN L193 SmtUtils]: Spent 620.00 ms on a formula simplification that was a NOOP. DAG size: 301 [2020-10-29 13:01:01,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:01:01,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:01:01,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:01:01,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:01:01,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:01:01,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:01:01,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 13:01:01,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:01:01,180 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:01:01,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:01:01,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:01:01,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:01:01,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:01:01,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:01:01,444 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [929764178] [2020-10-29 13:01:01,444 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:01:01,445 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:01:01,445 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729120780] [2020-10-29 13:01:01,445 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:01:01,446 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:01:01,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:01:01,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:01:01,446 INFO L87 Difference]: Start difference. First operand 5205 states and 7970 transitions. Second operand 5 states. [2020-10-29 13:01:08,210 WARN L193 SmtUtils]: Spent 698.00 ms on a formula simplification that was a NOOP. DAG size: 307 [2020-10-29 13:01:09,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:01:09,963 INFO L93 Difference]: Finished difference Result 15414 states and 23590 transitions. [2020-10-29 13:01:09,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 13:01:09,966 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 301 [2020-10-29 13:01:09,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:01:10,017 INFO L225 Difference]: With dead ends: 15414 [2020-10-29 13:01:10,017 INFO L226 Difference]: Without dead ends: 10232 [2020-10-29 13:01:10,031 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:01:10,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10232 states. [2020-10-29 13:01:10,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10232 to 10229. [2020-10-29 13:01:10,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10229 states. [2020-10-29 13:01:10,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10229 states to 10229 states and 15555 transitions. [2020-10-29 13:01:10,528 INFO L78 Accepts]: Start accepts. Automaton has 10229 states and 15555 transitions. Word has length 301 [2020-10-29 13:01:10,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:01:10,529 INFO L481 AbstractCegarLoop]: Abstraction has 10229 states and 15555 transitions. [2020-10-29 13:01:10,529 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:01:10,529 INFO L276 IsEmpty]: Start isEmpty. Operand 10229 states and 15555 transitions. [2020-10-29 13:01:10,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2020-10-29 13:01:10,553 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:01:10,553 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:01:10,553 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 13:01:10,553 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:01:10,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:01:10,554 INFO L82 PathProgramCache]: Analyzing trace with hash 357040335, now seen corresponding path program 1 times [2020-10-29 13:01:10,554 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:01:10,554 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [706650318] [2020-10-29 13:01:10,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:01:10,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:01:10,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:01:10,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:01:10,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:01:10,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:01:10,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:01:11,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:01:11,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:01:11,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:01:11,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:01:11,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:01:11,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:01:11,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:01:11,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:01:12,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:01:15,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:01:15,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 311 [2020-10-29 13:01:15,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-29 13:01:15,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-29 13:01:15,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:01:15,601 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:01:15,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:01:15,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:01:15,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-29 13:01:15,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:01:16,378 WARN L193 SmtUtils]: Spent 654.00 ms on a formula simplification that was a NOOP. DAG size: 301 [2020-10-29 13:01:16,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:01:16,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:01:16,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:01:16,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:01:16,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:01:16,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:01:16,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 13:01:16,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:01:16,410 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:01:16,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:01:16,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:01:16,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:01:16,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:01:16,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:01:16,523 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [706650318] [2020-10-29 13:01:16,523 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:01:16,523 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:01:16,523 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642593766] [2020-10-29 13:01:16,524 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:01:16,524 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:01:16,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:01:16,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:01:16,525 INFO L87 Difference]: Start difference. First operand 10229 states and 15555 transitions. Second operand 5 states. [2020-10-29 13:01:23,376 WARN L193 SmtUtils]: Spent 731.00 ms on a formula simplification that was a NOOP. DAG size: 307 [2020-10-29 13:01:25,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:01:25,347 INFO L93 Difference]: Finished difference Result 29603 states and 44837 transitions. [2020-10-29 13:01:25,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 13:01:25,349 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 303 [2020-10-29 13:01:25,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:01:25,412 INFO L225 Difference]: With dead ends: 29603 [2020-10-29 13:01:25,412 INFO L226 Difference]: Without dead ends: 19808 [2020-10-29 13:01:25,436 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:01:25,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19808 states. [2020-10-29 13:01:26,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19808 to 19805. [2020-10-29 13:01:26,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19805 states. [2020-10-29 13:01:26,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19805 states to 19805 states and 29813 transitions. [2020-10-29 13:01:26,247 INFO L78 Accepts]: Start accepts. Automaton has 19805 states and 29813 transitions. Word has length 303 [2020-10-29 13:01:26,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:01:26,248 INFO L481 AbstractCegarLoop]: Abstraction has 19805 states and 29813 transitions. [2020-10-29 13:01:26,248 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:01:26,248 INFO L276 IsEmpty]: Start isEmpty. Operand 19805 states and 29813 transitions. [2020-10-29 13:01:26,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2020-10-29 13:01:26,293 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:01:26,293 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:01:26,293 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 13:01:26,293 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:01:26,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:01:26,294 INFO L82 PathProgramCache]: Analyzing trace with hash 1211977135, now seen corresponding path program 1 times [2020-10-29 13:01:26,294 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:01:26,294 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [439424958] [2020-10-29 13:01:26,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:01:26,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:01:26,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:01:26,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:01:26,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:01:26,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:01:26,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:01:26,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:01:26,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:01:26,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:01:27,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:01:27,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:01:27,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:01:30,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:01:30,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:01:31,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:01:31,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:01:31,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 313 [2020-10-29 13:01:31,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-29 13:01:31,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-29 13:01:31,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:01:31,337 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:01:31,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:01:31,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:01:31,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-29 13:01:31,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:01:32,307 WARN L193 SmtUtils]: Spent 701.00 ms on a formula simplification that was a NOOP. DAG size: 301 [2020-10-29 13:01:32,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:01:32,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:01:32,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:01:32,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:01:32,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:01:32,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:01:32,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 13:01:32,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:01:32,333 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:01:32,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:01:32,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:01:32,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:01:32,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:01:32,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:01:32,461 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [439424958] [2020-10-29 13:01:32,461 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:01:32,462 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:01:32,462 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031582658] [2020-10-29 13:01:32,463 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:01:32,463 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:01:32,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:01:32,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:01:32,464 INFO L87 Difference]: Start difference. First operand 19805 states and 29813 transitions. Second operand 5 states. [2020-10-29 13:01:41,288 WARN L193 SmtUtils]: Spent 743.00 ms on a formula simplification that was a NOOP. DAG size: 307 [2020-10-29 13:01:43,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:01:43,591 INFO L93 Difference]: Finished difference Result 56949 states and 85309 transitions. [2020-10-29 13:01:43,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 13:01:43,592 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 305 [2020-10-29 13:01:43,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:01:43,683 INFO L225 Difference]: With dead ends: 56949 [2020-10-29 13:01:43,683 INFO L226 Difference]: Without dead ends: 38498 [2020-10-29 13:01:43,726 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:01:43,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38498 states. [2020-10-29 13:01:45,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38498 to 38495. [2020-10-29 13:01:45,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38495 states. [2020-10-29 13:01:45,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38495 states to 38495 states and 57457 transitions. [2020-10-29 13:01:45,707 INFO L78 Accepts]: Start accepts. Automaton has 38495 states and 57457 transitions. Word has length 305 [2020-10-29 13:01:45,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:01:45,707 INFO L481 AbstractCegarLoop]: Abstraction has 38495 states and 57457 transitions. [2020-10-29 13:01:45,707 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:01:45,707 INFO L276 IsEmpty]: Start isEmpty. Operand 38495 states and 57457 transitions. [2020-10-29 13:01:45,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2020-10-29 13:01:45,773 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:01:45,774 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:01:45,774 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 13:01:45,774 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:01:45,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:01:45,775 INFO L82 PathProgramCache]: Analyzing trace with hash -699654624, now seen corresponding path program 1 times [2020-10-29 13:01:45,775 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:01:45,775 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1619122955] [2020-10-29 13:01:45,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:01:45,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:01:45,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:01:45,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:01:45,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:01:46,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:01:46,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:01:46,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:01:46,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:01:46,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:01:46,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:01:46,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:01:46,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:01:46,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:01:46,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:01:50,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:01:50,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 315 [2020-10-29 13:01:50,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-29 13:01:50,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-29 13:01:50,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:01:50,825 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:01:50,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:01:50,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:01:50,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-29 13:01:50,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:01:51,660 WARN L193 SmtUtils]: Spent 709.00 ms on a formula simplification that was a NOOP. DAG size: 301 [2020-10-29 13:01:51,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:01:51,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:01:51,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:01:51,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:01:51,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:01:51,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:01:51,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 13:01:51,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:01:51,684 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:01:51,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:01:51,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:01:51,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:01:51,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:01:51,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:01:51,823 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1619122955] [2020-10-29 13:01:51,823 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:01:51,824 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:01:51,824 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686372684] [2020-10-29 13:01:51,825 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:01:51,825 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:01:51,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:01:51,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:01:51,826 INFO L87 Difference]: Start difference. First operand 38495 states and 57457 transitions. Second operand 5 states. [2020-10-29 13:02:01,065 WARN L193 SmtUtils]: Spent 742.00 ms on a formula simplification that was a NOOP. DAG size: 307 [2020-10-29 13:02:03,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:02:03,713 INFO L93 Difference]: Finished difference Result 112827 states and 167902 transitions. [2020-10-29 13:02:03,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 13:02:03,714 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 307 [2020-10-29 13:02:03,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:02:03,888 INFO L225 Difference]: With dead ends: 112827 [2020-10-29 13:02:03,889 INFO L226 Difference]: Without dead ends: 75024 [2020-10-29 13:02:03,960 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:02:04,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75024 states. [2020-10-29 13:02:08,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75024 to 75021. [2020-10-29 13:02:08,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75021 states. [2020-10-29 13:02:08,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75021 states to 75021 states and 110846 transitions. [2020-10-29 13:02:08,314 INFO L78 Accepts]: Start accepts. Automaton has 75021 states and 110846 transitions. Word has length 307 [2020-10-29 13:02:08,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:02:08,315 INFO L481 AbstractCegarLoop]: Abstraction has 75021 states and 110846 transitions. [2020-10-29 13:02:08,315 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:02:08,315 INFO L276 IsEmpty]: Start isEmpty. Operand 75021 states and 110846 transitions. [2020-10-29 13:02:08,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2020-10-29 13:02:08,394 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:02:08,394 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:02:08,394 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 13:02:08,394 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:02:08,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:02:08,395 INFO L82 PathProgramCache]: Analyzing trace with hash 199036930, now seen corresponding path program 1 times [2020-10-29 13:02:08,396 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:02:08,396 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1177135228] [2020-10-29 13:02:08,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:02:08,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:02:08,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:02:08,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:02:08,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:02:08,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:02:08,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:02:09,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:02:09,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:02:09,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:02:09,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:02:09,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:02:09,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:02:09,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:02:10,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:02:13,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:02:13,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 317 [2020-10-29 13:02:13,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-29 13:02:13,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-29 13:02:13,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:02:13,465 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:02:13,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:02:13,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:02:13,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-29 13:02:13,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:02:14,280 WARN L193 SmtUtils]: Spent 711.00 ms on a formula simplification that was a NOOP. DAG size: 301 [2020-10-29 13:02:14,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:02:14,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:02:14,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:02:14,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:02:14,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:02:14,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:02:14,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 13:02:14,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:02:14,301 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:02:14,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:02:14,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:02:14,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:02:14,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:02:14,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:02:14,400 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1177135228] [2020-10-29 13:02:14,400 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:02:14,401 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:02:14,401 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742428750] [2020-10-29 13:02:14,403 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:02:14,403 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:02:14,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:02:14,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:02:14,404 INFO L87 Difference]: Start difference. First operand 75021 states and 110846 transitions. Second operand 5 states. [2020-10-29 13:02:26,438 WARN L193 SmtUtils]: Spent 700.00 ms on a formula simplification that was a NOOP. DAG size: 307 [2020-10-29 13:02:30,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:02:30,260 INFO L93 Difference]: Finished difference Result 219914 states and 324142 transitions. [2020-10-29 13:02:30,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 13:02:30,261 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 309 [2020-10-29 13:02:30,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:02:30,570 INFO L225 Difference]: With dead ends: 219914 [2020-10-29 13:02:30,570 INFO L226 Difference]: Without dead ends: 146839 [2020-10-29 13:02:30,823 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:02:30,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146839 states. [2020-10-29 13:02:38,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146839 to 146836. [2020-10-29 13:02:38,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146836 states. [2020-10-29 13:02:39,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146836 states to 146836 states and 214942 transitions. [2020-10-29 13:02:39,195 INFO L78 Accepts]: Start accepts. Automaton has 146836 states and 214942 transitions. Word has length 309 [2020-10-29 13:02:39,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:02:39,195 INFO L481 AbstractCegarLoop]: Abstraction has 146836 states and 214942 transitions. [2020-10-29 13:02:39,196 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:02:39,196 INFO L276 IsEmpty]: Start isEmpty. Operand 146836 states and 214942 transitions. [2020-10-29 13:02:39,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2020-10-29 13:02:39,346 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:02:39,347 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:02:39,347 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 13:02:39,347 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:02:39,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:02:39,347 INFO L82 PathProgramCache]: Analyzing trace with hash 1450880581, now seen corresponding path program 1 times [2020-10-29 13:02:39,348 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:02:39,348 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [705309983] [2020-10-29 13:02:39,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:02:39,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:02:39,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:02:39,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:02:39,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:02:39,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:02:39,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:02:39,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:02:39,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:02:39,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:02:40,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:02:40,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:02:40,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:02:41,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:02:41,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:02:41,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:02:44,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:02:44,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 319 [2020-10-29 13:02:44,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-29 13:02:44,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-29 13:02:44,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:02:44,412 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:02:44,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:02:44,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:02:44,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-29 13:02:44,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:02:45,210 WARN L193 SmtUtils]: Spent 658.00 ms on a formula simplification that was a NOOP. DAG size: 301 [2020-10-29 13:02:45,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:02:45,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:02:45,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:02:45,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:02:45,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:02:45,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:02:45,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 13:02:45,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:02:45,240 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:02:45,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:02:45,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:02:45,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:02:45,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:02:45,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:02:45,399 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [705309983] [2020-10-29 13:02:45,399 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:02:45,399 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:02:45,399 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188919292] [2020-10-29 13:02:45,400 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:02:45,400 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:02:45,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:02:45,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:02:45,401 INFO L87 Difference]: Start difference. First operand 146836 states and 214942 transitions. Second operand 5 states. [2020-10-29 13:03:05,639 WARN L193 SmtUtils]: Spent 745.00 ms on a formula simplification that was a NOOP. DAG size: 307 [2020-10-29 13:03:11,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:03:11,834 INFO L93 Difference]: Finished difference Result 427934 states and 624754 transitions. [2020-10-29 13:03:11,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 13:03:11,842 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 311 [2020-10-29 13:03:11,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:03:12,641 INFO L225 Difference]: With dead ends: 427934 [2020-10-29 13:03:12,642 INFO L226 Difference]: Without dead ends: 286971 [2020-10-29 13:03:12,815 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:03:13,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286971 states. [2020-10-29 13:03:31,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286971 to 286968. [2020-10-29 13:03:31,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 286968 states. [2020-10-29 13:03:32,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286968 states to 286968 states and 416382 transitions. [2020-10-29 13:03:32,906 INFO L78 Accepts]: Start accepts. Automaton has 286968 states and 416382 transitions. Word has length 311 [2020-10-29 13:03:32,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:03:32,906 INFO L481 AbstractCegarLoop]: Abstraction has 286968 states and 416382 transitions. [2020-10-29 13:03:32,906 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:03:32,906 INFO L276 IsEmpty]: Start isEmpty. Operand 286968 states and 416382 transitions. [2020-10-29 13:03:33,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2020-10-29 13:03:33,604 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:03:33,604 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:03:33,604 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 13:03:33,605 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:03:33,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:03:33,605 INFO L82 PathProgramCache]: Analyzing trace with hash -2019440737, now seen corresponding path program 1 times [2020-10-29 13:03:33,605 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:03:33,605 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1331039088] [2020-10-29 13:03:33,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:03:33,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:03:33,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:33,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:33,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:33,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:33,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:33,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:33,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:33,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:34,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:34,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:34,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:34,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:34,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:35,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:38,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:03:38,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 321 [2020-10-29 13:03:38,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-29 13:03:38,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-29 13:03:38,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:03:38,664 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:03:38,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:03:38,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:03:38,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-29 13:03:38,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:03:39,482 WARN L193 SmtUtils]: Spent 680.00 ms on a formula simplification that was a NOOP. DAG size: 301 [2020-10-29 13:03:39,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:03:39,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:03:39,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:39,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:03:39,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:03:39,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:03:39,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 13:03:39,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:03:39,510 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:03:39,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:03:39,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:03:39,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:03:39,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:03:39,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:03:39,639 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1331039088] [2020-10-29 13:03:39,639 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:03:39,639 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:03:39,639 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057878276] [2020-10-29 13:03:39,640 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:03:39,640 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:03:39,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:03:39,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:03:39,641 INFO L87 Difference]: Start difference. First operand 286968 states and 416382 transitions. Second operand 5 states.