/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=SHALLOWEST --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.5.1.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 05:05:10,587 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 05:05:10,590 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 05:05:10,626 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 05:05:10,627 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 05:05:10,628 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 05:05:10,630 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 05:05:10,632 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 05:05:10,634 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 05:05:10,635 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 05:05:10,637 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 05:05:10,638 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 05:05:10,639 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 05:05:10,640 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 05:05:10,642 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 05:05:10,643 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 05:05:10,644 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 05:05:10,645 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 05:05:10,648 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 05:05:10,665 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 05:05:10,668 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 05:05:10,669 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 05:05:10,671 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 05:05:10,672 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 05:05:10,675 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 05:05:10,675 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 05:05:10,676 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 05:05:10,677 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 05:05:10,677 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 05:05:10,678 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 05:05:10,679 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 05:05:10,680 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 05:05:10,681 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 05:05:10,682 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 05:05:10,683 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 05:05:10,683 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 05:05:10,684 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 05:05:10,684 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 05:05:10,685 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 05:05:10,686 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 05:05:10,687 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 05:05:10,688 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 05:05:10,714 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 05:05:10,714 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 05:05:10,716 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 05:05:10,716 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 05:05:10,716 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 05:05:10,716 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 05:05:10,717 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 05:05:10,717 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 05:05:10,717 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 05:05:10,717 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 05:05:10,718 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 05:05:10,718 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 05:05:10,718 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 05:05:10,718 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 05:05:10,719 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 05:05:10,719 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 05:05:10,719 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 05:05:10,719 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 05:05:10,720 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 05:05:10,720 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 05:05:10,720 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 05:05:10,720 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 05:05:10,721 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 05:05:10,721 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 05:05:10,721 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 05:05:10,721 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 05:05:10,722 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 05:05:10,722 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 05:05:10,722 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 05:05:10,722 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 05:05:11,087 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 05:05:11,125 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 05:05:11,129 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 05:05:11,130 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 05:05:11,131 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 05:05:11,133 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.5.1.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2020-10-27 05:05:11,224 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a91bea30c/f9b9dc4d5dc84354bb7471b9299de12c/FLAG9e2d351b5 [2020-10-27 05:05:12,111 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 05:05:12,112 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.5.1.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2020-10-27 05:05:12,138 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a91bea30c/f9b9dc4d5dc84354bb7471b9299de12c/FLAG9e2d351b5 [2020-10-27 05:05:12,256 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a91bea30c/f9b9dc4d5dc84354bb7471b9299de12c [2020-10-27 05:05:12,259 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 05:05:12,266 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 05:05:12,267 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 05:05:12,268 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 05:05:12,274 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 05:05:12,275 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:05:12" (1/1) ... [2020-10-27 05:05:12,278 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63f45d18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:05:12, skipping insertion in model container [2020-10-27 05:05:12,279 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:05:12" (1/1) ... [2020-10-27 05:05:12,287 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 05:05:12,360 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 05:05:13,183 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 05:05:13,206 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 05:05:13,453 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 05:05:13,488 INFO L208 MainTranslator]: Completed translation [2020-10-27 05:05:13,488 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:05:13 WrapperNode [2020-10-27 05:05:13,489 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 05:05:13,490 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 05:05:13,490 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 05:05:13,490 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 05:05:13,502 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:05:13" (1/1) ... [2020-10-27 05:05:13,503 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:05:13" (1/1) ... [2020-10-27 05:05:13,531 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:05:13" (1/1) ... [2020-10-27 05:05:13,531 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:05:13" (1/1) ... [2020-10-27 05:05:13,604 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:05:13" (1/1) ... [2020-10-27 05:05:13,648 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:05:13" (1/1) ... [2020-10-27 05:05:13,657 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:05:13" (1/1) ... [2020-10-27 05:05:13,668 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 05:05:13,669 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 05:05:13,670 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 05:05:13,670 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 05:05:13,671 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:05:13" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 05:05:13,746 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 05:05:13,746 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 05:05:13,747 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 05:05:13,747 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 05:05:13,747 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 05:05:13,748 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 05:05:13,749 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 05:05:13,749 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 05:05:13,749 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 05:05:13,750 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 05:05:13,751 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 05:05:13,752 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-27 05:05:13,752 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 05:05:13,752 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 05:05:13,752 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-27 05:05:13,753 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-27 05:05:13,753 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-27 05:05:13,754 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-27 05:05:13,754 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-27 05:05:13,754 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-27 05:05:13,755 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 05:05:13,755 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 05:05:13,755 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 05:05:13,755 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 05:05:13,755 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 05:05:13,759 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 05:05:13,761 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 05:05:13,761 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 05:05:13,761 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 05:05:15,871 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 05:05:15,872 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-27 05:05:15,874 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:05:15 BoogieIcfgContainer [2020-10-27 05:05:15,875 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 05:05:15,876 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 05:05:15,877 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 05:05:15,880 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 05:05:15,881 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 05:05:12" (1/3) ... [2020-10-27 05:05:15,881 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cf35abe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:05:15, skipping insertion in model container [2020-10-27 05:05:15,882 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:05:13" (2/3) ... [2020-10-27 05:05:15,882 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cf35abe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:05:15, skipping insertion in model container [2020-10-27 05:05:15,882 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:05:15" (3/3) ... [2020-10-27 05:05:15,884 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.5.1.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2020-10-27 05:05:15,896 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 05:05:15,902 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 05:05:15,915 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 05:05:15,947 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 05:05:15,947 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 05:05:15,948 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 05:05:15,948 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 05:05:15,948 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 05:05:15,948 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 05:05:15,948 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 05:05:15,948 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 05:05:15,982 INFO L276 IsEmpty]: Start isEmpty. Operand 725 states. [2020-10-27 05:05:16,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-10-27 05:05:16,027 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:05:16,031 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] [2020-10-27 05:05:16,031 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:05:16,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:05:16,046 INFO L82 PathProgramCache]: Analyzing trace with hash -2015037424, now seen corresponding path program 1 times [2020-10-27 05:05:16,055 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:05:16,056 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [967339493] [2020-10-27 05:05:16,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:05:16,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:05:16,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:17,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:18,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:18,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:18,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:19,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:21,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:05:21,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 197 [2020-10-27 05:05:21,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 05:05:21,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5146 [2020-10-27 05:05:21,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:05:21,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:05:21,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 147 [2020-10-27 05:05:21,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-27 05:05:21,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 05:05:22,886 WARN L193 SmtUtils]: Spent 827.00 ms on a formula simplification that was a NOOP. DAG size: 397 [2020-10-27 05:05:22,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:05:22,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:05:22,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:22,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:05:22,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:05:22,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:05:22,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-27 05:05:22,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:05:22,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:05:22,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:05:22,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:05:22,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:05:23,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:05:23,079 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [967339493] [2020-10-27 05:05:23,081 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:05:23,081 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 05:05:23,082 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983223574] [2020-10-27 05:05:23,087 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 05:05:23,088 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:05:23,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 05:05:23,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 05:05:23,109 INFO L87 Difference]: Start difference. First operand 725 states. Second operand 4 states. [2020-10-27 05:05:23,992 WARN L193 SmtUtils]: Spent 773.00 ms on a formula simplification that was a NOOP. DAG size: 399 [2020-10-27 05:05:29,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:05:29,275 INFO L93 Difference]: Finished difference Result 1102 states and 1958 transitions. [2020-10-27 05:05:29,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 05:05:29,278 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 189 [2020-10-27 05:05:29,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:05:29,315 INFO L225 Difference]: With dead ends: 1102 [2020-10-27 05:05:29,315 INFO L226 Difference]: Without dead ends: 896 [2020-10-27 05:05:29,321 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:05:29,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 896 states. [2020-10-27 05:05:29,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 896 to 893. [2020-10-27 05:05:29,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 893 states. [2020-10-27 05:05:29,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 893 states to 893 states and 1565 transitions. [2020-10-27 05:05:29,446 INFO L78 Accepts]: Start accepts. Automaton has 893 states and 1565 transitions. Word has length 189 [2020-10-27 05:05:29,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:05:29,447 INFO L481 AbstractCegarLoop]: Abstraction has 893 states and 1565 transitions. [2020-10-27 05:05:29,447 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 05:05:29,447 INFO L276 IsEmpty]: Start isEmpty. Operand 893 states and 1565 transitions. [2020-10-27 05:05:29,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-10-27 05:05:29,453 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:05:29,454 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] [2020-10-27 05:05:29,454 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 05:05:29,454 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:05:29,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:05:29,455 INFO L82 PathProgramCache]: Analyzing trace with hash 1540638547, now seen corresponding path program 1 times [2020-10-27 05:05:29,455 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:05:29,456 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [52375031] [2020-10-27 05:05:29,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:05:29,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:05:29,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:29,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:30,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:31,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:31,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:34,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:05:34,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-27 05:05:34,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 05:05:34,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5079 [2020-10-27 05:05:34,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:05:34,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:05:34,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:05:34,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 168 [2020-10-27 05:05:34,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-10-27 05:05:35,767 WARN L193 SmtUtils]: Spent 780.00 ms on a formula simplification that was a NOOP. DAG size: 397 [2020-10-27 05:05:35,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:05:35,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:05:35,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:35,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:05:35,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:05:35,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:05:35,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-27 05:05:35,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:05:35,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:05:35,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:05:35,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:05:35,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:05:35,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:05:35,979 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [52375031] [2020-10-27 05:05:35,980 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:05:35,980 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:05:35,980 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858807453] [2020-10-27 05:05:35,982 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:05:35,982 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:05:35,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:05:35,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:05:35,983 INFO L87 Difference]: Start difference. First operand 893 states and 1565 transitions. Second operand 5 states. [2020-10-27 05:05:43,027 WARN L193 SmtUtils]: Spent 792.00 ms on a formula simplification that was a NOOP. DAG size: 403 [2020-10-27 05:05:43,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:05:43,181 INFO L93 Difference]: Finished difference Result 2599 states and 4557 transitions. [2020-10-27 05:05:43,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 05:05:43,182 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 193 [2020-10-27 05:05:43,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:05:43,194 INFO L225 Difference]: With dead ends: 2599 [2020-10-27 05:05:43,194 INFO L226 Difference]: Without dead ends: 1763 [2020-10-27 05:05:43,200 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:05:43,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1763 states. [2020-10-27 05:05:43,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1763 to 1760. [2020-10-27 05:05:43,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1760 states. [2020-10-27 05:05:43,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1760 states to 1760 states and 3079 transitions. [2020-10-27 05:05:43,354 INFO L78 Accepts]: Start accepts. Automaton has 1760 states and 3079 transitions. Word has length 193 [2020-10-27 05:05:43,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:05:43,355 INFO L481 AbstractCegarLoop]: Abstraction has 1760 states and 3079 transitions. [2020-10-27 05:05:43,355 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:05:43,356 INFO L276 IsEmpty]: Start isEmpty. Operand 1760 states and 3079 transitions. [2020-10-27 05:05:43,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-10-27 05:05:43,362 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:05:43,363 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] [2020-10-27 05:05:43,363 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 05:05:43,363 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:05:43,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:05:43,364 INFO L82 PathProgramCache]: Analyzing trace with hash 1398110438, now seen corresponding path program 1 times [2020-10-27 05:05:43,364 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:05:43,366 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2101385959] [2020-10-27 05:05:43,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:05:43,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:05:43,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:43,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:44,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:44,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:44,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:48,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:05:48,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-27 05:05:48,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 05:05:48,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5051 [2020-10-27 05:05:48,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:05:48,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:05:48,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:05:48,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 167 [2020-10-27 05:05:48,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:05:49,542 WARN L193 SmtUtils]: Spent 756.00 ms on a formula simplification that was a NOOP. DAG size: 397 [2020-10-27 05:05:49,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:05:49,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:05:49,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:49,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:05:49,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:05:49,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:05:49,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 05:05:49,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:05:49,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:05:49,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:05:49,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:05:49,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:05:49,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:05:49,793 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2101385959] [2020-10-27 05:05:49,794 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:05:49,794 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:05:49,795 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400741827] [2020-10-27 05:05:49,796 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:05:49,797 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:05:49,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:05:49,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:05:49,799 INFO L87 Difference]: Start difference. First operand 1760 states and 3079 transitions. Second operand 5 states. [2020-10-27 05:05:56,989 WARN L193 SmtUtils]: Spent 845.00 ms on a formula simplification that was a NOOP. DAG size: 403 [2020-10-27 05:05:57,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:05:57,136 INFO L93 Difference]: Finished difference Result 5030 states and 8782 transitions. [2020-10-27 05:05:57,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 05:05:57,137 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 193 [2020-10-27 05:05:57,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:05:57,159 INFO L225 Difference]: With dead ends: 5030 [2020-10-27 05:05:57,159 INFO L226 Difference]: Without dead ends: 3407 [2020-10-27 05:05:57,163 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:05:57,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3407 states. [2020-10-27 05:05:57,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3407 to 3404. [2020-10-27 05:05:57,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3404 states. [2020-10-27 05:05:57,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3404 states to 3404 states and 5922 transitions. [2020-10-27 05:05:57,427 INFO L78 Accepts]: Start accepts. Automaton has 3404 states and 5922 transitions. Word has length 193 [2020-10-27 05:05:57,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:05:57,428 INFO L481 AbstractCegarLoop]: Abstraction has 3404 states and 5922 transitions. [2020-10-27 05:05:57,428 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:05:57,428 INFO L276 IsEmpty]: Start isEmpty. Operand 3404 states and 5922 transitions. [2020-10-27 05:05:57,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2020-10-27 05:05:57,437 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:05:57,437 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] [2020-10-27 05:05:57,438 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 05:05:57,438 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:05:57,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:05:57,439 INFO L82 PathProgramCache]: Analyzing trace with hash -861300796, now seen corresponding path program 1 times [2020-10-27 05:05:57,440 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:05:57,443 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2099482550] [2020-10-27 05:05:57,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:05:57,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:05:57,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:57,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:58,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:58,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:02,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:02,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:02,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:06:02,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 202 [2020-10-27 05:06:02,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 05:06:02,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-27 05:06:02,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:06:02,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:06:02,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:06:02,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 169 [2020-10-27 05:06:02,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:06:03,486 WARN L193 SmtUtils]: Spent 732.00 ms on a formula simplification that was a NOOP. DAG size: 397 [2020-10-27 05:06:03,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:06:03,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:06:03,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:03,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:06:03,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:06:03,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:06:03,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-27 05:06:03,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:06:03,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:06:03,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:06:03,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:06:03,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:06:03,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:06:03,707 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2099482550] [2020-10-27 05:06:03,707 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:06:03,707 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:06:03,707 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824240901] [2020-10-27 05:06:03,708 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:06:03,708 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:06:03,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:06:03,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:06:03,709 INFO L87 Difference]: Start difference. First operand 3404 states and 5922 transitions. Second operand 5 states. [2020-10-27 05:06:11,297 WARN L193 SmtUtils]: Spent 866.00 ms on a formula simplification that was a NOOP. DAG size: 403 [2020-10-27 05:06:11,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:06:11,565 INFO L93 Difference]: Finished difference Result 9766 states and 16962 transitions. [2020-10-27 05:06:11,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 05:06:11,566 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 194 [2020-10-27 05:06:11,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:06:11,599 INFO L225 Difference]: With dead ends: 9766 [2020-10-27 05:06:11,600 INFO L226 Difference]: Without dead ends: 6619 [2020-10-27 05:06:11,607 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:06:11,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6619 states. [2020-10-27 05:06:12,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6619 to 6616. [2020-10-27 05:06:12,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6616 states. [2020-10-27 05:06:12,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6616 states to 6616 states and 11467 transitions. [2020-10-27 05:06:12,133 INFO L78 Accepts]: Start accepts. Automaton has 6616 states and 11467 transitions. Word has length 194 [2020-10-27 05:06:12,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:06:12,134 INFO L481 AbstractCegarLoop]: Abstraction has 6616 states and 11467 transitions. [2020-10-27 05:06:12,134 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:06:12,134 INFO L276 IsEmpty]: Start isEmpty. Operand 6616 states and 11467 transitions. [2020-10-27 05:06:12,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2020-10-27 05:06:12,150 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:06:12,150 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] [2020-10-27 05:06:12,151 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 05:06:12,151 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:06:12,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:06:12,151 INFO L82 PathProgramCache]: Analyzing trace with hash -2070889439, now seen corresponding path program 1 times [2020-10-27 05:06:12,151 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:06:12,152 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [599683522] [2020-10-27 05:06:12,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:06:12,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:06:12,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:12,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:12,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:13,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:13,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:17,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:06:17,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 203 [2020-10-27 05:06:17,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 05:06:17,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 05:06:17,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:06:17,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:06:17,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:06:17,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 169 [2020-10-27 05:06:17,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:06:18,274 WARN L193 SmtUtils]: Spent 819.00 ms on a formula simplification that was a NOOP. DAG size: 397 [2020-10-27 05:06:18,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:06:18,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:06:18,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:18,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:06:18,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:06:18,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:06:18,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 05:06:18,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:06:18,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:06:18,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:06:18,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:06:18,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:06:18,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:06:18,451 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [599683522] [2020-10-27 05:06:18,452 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:06:18,452 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:06:18,452 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666982507] [2020-10-27 05:06:18,452 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:06:18,452 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:06:18,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:06:18,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:06:18,453 INFO L87 Difference]: Start difference. First operand 6616 states and 11467 transitions. Second operand 5 states. [2020-10-27 05:06:24,947 WARN L193 SmtUtils]: Spent 808.00 ms on a formula simplification that was a NOOP. DAG size: 403 [2020-10-27 05:06:25,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:06:25,174 INFO L93 Difference]: Finished difference Result 19709 states and 34169 transitions. [2020-10-27 05:06:25,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 05:06:25,180 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 195 [2020-10-27 05:06:25,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:06:25,244 INFO L225 Difference]: With dead ends: 19709 [2020-10-27 05:06:25,245 INFO L226 Difference]: Without dead ends: 13112 [2020-10-27 05:06:25,261 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:06:25,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13112 states. [2020-10-27 05:06:26,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13112 to 13109. [2020-10-27 05:06:26,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13109 states. [2020-10-27 05:06:26,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13109 states to 13109 states and 22630 transitions. [2020-10-27 05:06:26,397 INFO L78 Accepts]: Start accepts. Automaton has 13109 states and 22630 transitions. Word has length 195 [2020-10-27 05:06:26,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:06:26,398 INFO L481 AbstractCegarLoop]: Abstraction has 13109 states and 22630 transitions. [2020-10-27 05:06:26,398 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:06:26,398 INFO L276 IsEmpty]: Start isEmpty. Operand 13109 states and 22630 transitions. [2020-10-27 05:06:26,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2020-10-27 05:06:26,428 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:06:26,429 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] [2020-10-27 05:06:26,429 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 05:06:26,429 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:06:26,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:06:26,430 INFO L82 PathProgramCache]: Analyzing trace with hash -888062387, now seen corresponding path program 1 times [2020-10-27 05:06:26,430 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:06:26,430 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1233621579] [2020-10-27 05:06:26,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:06:26,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:06:26,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:26,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:27,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:28,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:28,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:31,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:06:31,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 203 [2020-10-27 05:06:31,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 05:06:31,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5049 [2020-10-27 05:06:31,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:06:31,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 05:06:31,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:06:31,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 176 [2020-10-27 05:06:31,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:06:32,574 WARN L193 SmtUtils]: Spent 842.00 ms on a formula simplification that was a NOOP. DAG size: 397 [2020-10-27 05:06:32,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:06:32,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:06:32,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:32,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:06:32,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:06:32,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:06:32,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-27 05:06:32,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:06:32,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:06:32,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:06:32,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:06:32,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:06:32,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:06:32,705 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1233621579] [2020-10-27 05:06:32,705 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:06:32,705 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 05:06:32,706 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555390404] [2020-10-27 05:06:32,706 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 05:06:32,706 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:06:32,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 05:06:32,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-27 05:06:32,707 INFO L87 Difference]: Start difference. First operand 13109 states and 22630 transitions. Second operand 8 states. [2020-10-27 05:06:33,595 WARN L193 SmtUtils]: Spent 805.00 ms on a formula simplification that was a NOOP. DAG size: 403 [2020-10-27 05:06:40,114 WARN L193 SmtUtils]: Spent 820.00 ms on a formula simplification that was a NOOP. DAG size: 405 [2020-10-27 05:06:41,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:06:41,322 INFO L93 Difference]: Finished difference Result 25783 states and 43954 transitions. [2020-10-27 05:06:41,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 05:06:41,322 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 195 [2020-10-27 05:06:41,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:06:41,369 INFO L225 Difference]: With dead ends: 25783 [2020-10-27 05:06:41,369 INFO L226 Difference]: Without dead ends: 20276 [2020-10-27 05:06:41,386 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2020-10-27 05:06:41,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20276 states. [2020-10-27 05:06:42,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20276 to 13253. [2020-10-27 05:06:42,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13253 states. [2020-10-27 05:06:42,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13253 states to 13253 states and 22782 transitions. [2020-10-27 05:06:42,790 INFO L78 Accepts]: Start accepts. Automaton has 13253 states and 22782 transitions. Word has length 195 [2020-10-27 05:06:42,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:06:42,791 INFO L481 AbstractCegarLoop]: Abstraction has 13253 states and 22782 transitions. [2020-10-27 05:06:42,791 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 05:06:42,791 INFO L276 IsEmpty]: Start isEmpty. Operand 13253 states and 22782 transitions. [2020-10-27 05:06:42,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2020-10-27 05:06:42,819 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:06:42,820 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] [2020-10-27 05:06:42,820 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 05:06:42,820 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:06:42,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:06:42,821 INFO L82 PathProgramCache]: Analyzing trace with hash -1084820481, now seen corresponding path program 1 times [2020-10-27 05:06:42,821 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:06:42,821 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [123759217] [2020-10-27 05:06:42,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:06:42,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:06:42,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:43,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:43,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:45,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:45,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:45,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:46,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:46,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:47,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:06:47,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 203 [2020-10-27 05:06:47,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 05:06:47,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-27 05:06:47,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:06:47,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:06:47,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:06:47,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 165 [2020-10-27 05:06:47,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:06:48,883 WARN L193 SmtUtils]: Spent 822.00 ms on a formula simplification that was a NOOP. DAG size: 397 [2020-10-27 05:06:48,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:06:48,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:06:48,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:48,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:06:48,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:06:48,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:06:48,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 05:06:48,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:06:48,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:06:48,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:06:48,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:06:48,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:06:48,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:06:48,997 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [123759217] [2020-10-27 05:06:48,997 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:06:48,998 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:06:48,998 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883090362] [2020-10-27 05:06:48,998 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:06:48,999 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:06:48,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:06:48,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:06:48,999 INFO L87 Difference]: Start difference. First operand 13253 states and 22782 transitions. Second operand 5 states. [2020-10-27 05:06:56,840 WARN L193 SmtUtils]: Spent 922.00 ms on a formula simplification that was a NOOP. DAG size: 403 [2020-10-27 05:06:57,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:06:57,324 INFO L93 Difference]: Finished difference Result 38927 states and 66882 transitions. [2020-10-27 05:06:57,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 05:06:57,325 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 195 [2020-10-27 05:06:57,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:06:57,385 INFO L225 Difference]: With dead ends: 38927 [2020-10-27 05:06:57,385 INFO L226 Difference]: Without dead ends: 26140 [2020-10-27 05:06:57,412 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:06:57,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26140 states. [2020-10-27 05:06:59,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26140 to 26137. [2020-10-27 05:06:59,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26137 states. [2020-10-27 05:06:59,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26137 states to 26137 states and 44746 transitions. [2020-10-27 05:06:59,827 INFO L78 Accepts]: Start accepts. Automaton has 26137 states and 44746 transitions. Word has length 195 [2020-10-27 05:06:59,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:06:59,827 INFO L481 AbstractCegarLoop]: Abstraction has 26137 states and 44746 transitions. [2020-10-27 05:06:59,827 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:06:59,827 INFO L276 IsEmpty]: Start isEmpty. Operand 26137 states and 44746 transitions. [2020-10-27 05:06:59,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-10-27 05:06:59,887 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:06:59,888 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] [2020-10-27 05:06:59,888 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 05:06:59,888 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:06:59,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:06:59,889 INFO L82 PathProgramCache]: Analyzing trace with hash -817724601, now seen corresponding path program 1 times [2020-10-27 05:06:59,889 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:06:59,889 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [301196142] [2020-10-27 05:06:59,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:06:59,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:07:00,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:00,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:00,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:01,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:01,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:01,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:01,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:05,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:07:05,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 204 [2020-10-27 05:07:05,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 05:07:05,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5065 [2020-10-27 05:07:05,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:07:05,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:07:05,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:07:05,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 167 [2020-10-27 05:07:05,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:07:05,960 WARN L193 SmtUtils]: Spent 776.00 ms on a formula simplification that was a NOOP. DAG size: 397 [2020-10-27 05:07:05,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:07:05,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:07:05,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:05,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:07:05,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:07:05,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:07:05,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 05:07:05,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:07:05,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:07:05,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:07:05,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:07:05,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:07:06,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:07:06,135 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [301196142] [2020-10-27 05:07:06,135 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:07:06,135 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:07:06,136 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385686619] [2020-10-27 05:07:06,136 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:07:06,136 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:07:06,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:07:06,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:07:06,137 INFO L87 Difference]: Start difference. First operand 26137 states and 44746 transitions. Second operand 5 states. [2020-10-27 05:07:16,495 WARN L193 SmtUtils]: Spent 827.00 ms on a formula simplification that was a NOOP. DAG size: 403 [2020-10-27 05:07:17,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:07:17,568 INFO L93 Difference]: Finished difference Result 75607 states and 129258 transitions. [2020-10-27 05:07:17,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 05:07:17,569 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 196 [2020-10-27 05:07:17,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:07:17,760 INFO L225 Difference]: With dead ends: 75607 [2020-10-27 05:07:17,761 INFO L226 Difference]: Without dead ends: 51236 [2020-10-27 05:07:17,819 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:07:17,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51236 states. [2020-10-27 05:07:22,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51236 to 51233. [2020-10-27 05:07:22,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51233 states. [2020-10-27 05:07:22,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51233 states to 51233 states and 87318 transitions. [2020-10-27 05:07:22,891 INFO L78 Accepts]: Start accepts. Automaton has 51233 states and 87318 transitions. Word has length 196 [2020-10-27 05:07:22,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:07:22,892 INFO L481 AbstractCegarLoop]: Abstraction has 51233 states and 87318 transitions. [2020-10-27 05:07:22,892 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:07:22,892 INFO L276 IsEmpty]: Start isEmpty. Operand 51233 states and 87318 transitions. [2020-10-27 05:07:23,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2020-10-27 05:07:23,029 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:07:23,029 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:07:23,030 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 05:07:23,030 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:07:23,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:07:23,030 INFO L82 PathProgramCache]: Analyzing trace with hash -617002756, now seen corresponding path program 1 times [2020-10-27 05:07:23,031 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:07:23,032 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [588477732] [2020-10-27 05:07:23,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:07:23,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:07:23,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:23,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:23,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:26,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:26,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:27,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:27,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:27,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:28,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:07:28,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 205 [2020-10-27 05:07:28,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 05:07:28,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5048 [2020-10-27 05:07:28,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:07:28,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 05:07:28,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:07:28,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 174 [2020-10-27 05:07:28,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:07:29,084 WARN L193 SmtUtils]: Spent 772.00 ms on a formula simplification that was a NOOP. DAG size: 397 [2020-10-27 05:07:29,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:07:29,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:07:29,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:29,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:07:29,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:07:29,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:07:29,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-27 05:07:29,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:07:29,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:07:29,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:07:29,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:07:29,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:07:29,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:07:29,205 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [588477732] [2020-10-27 05:07:29,205 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:07:29,205 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 05:07:29,205 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571684430] [2020-10-27 05:07:29,206 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 05:07:29,206 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:07:29,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 05:07:29,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-27 05:07:29,207 INFO L87 Difference]: Start difference. First operand 51233 states and 87318 transitions. Second operand 8 states. [2020-10-27 05:07:30,122 WARN L193 SmtUtils]: Spent 828.00 ms on a formula simplification that was a NOOP. DAG size: 403 [2020-10-27 05:07:40,631 WARN L193 SmtUtils]: Spent 823.00 ms on a formula simplification that was a NOOP. DAG size: 405 [2020-10-27 05:07:44,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:07:44,773 INFO L93 Difference]: Finished difference Result 81719 states and 138062 transitions. [2020-10-27 05:07:44,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 05:07:44,774 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 197 [2020-10-27 05:07:44,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:07:44,897 INFO L225 Difference]: With dead ends: 81719 [2020-10-27 05:07:44,897 INFO L226 Difference]: Without dead ends: 76004 [2020-10-27 05:07:44,923 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2020-10-27 05:07:44,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76004 states. [2020-10-27 05:07:49,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76004 to 51233. [2020-10-27 05:07:49,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51233 states. [2020-10-27 05:07:49,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51233 states to 51233 states and 87286 transitions. [2020-10-27 05:07:49,911 INFO L78 Accepts]: Start accepts. Automaton has 51233 states and 87286 transitions. Word has length 197 [2020-10-27 05:07:49,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:07:49,911 INFO L481 AbstractCegarLoop]: Abstraction has 51233 states and 87286 transitions. [2020-10-27 05:07:49,912 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 05:07:49,912 INFO L276 IsEmpty]: Start isEmpty. Operand 51233 states and 87286 transitions. [2020-10-27 05:07:49,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2020-10-27 05:07:49,966 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:07:49,966 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] [2020-10-27 05:07:49,966 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 05:07:49,967 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:07:49,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:07:49,967 INFO L82 PathProgramCache]: Analyzing trace with hash -2121305148, now seen corresponding path program 1 times [2020-10-27 05:07:49,967 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:07:49,968 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2073270887] [2020-10-27 05:07:49,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:07:50,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:07:50,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:50,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:50,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:50,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:50,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:50,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:55,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:07:55,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 205 [2020-10-27 05:07:55,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 05:07:55,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5077 [2020-10-27 05:07:55,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:07:55,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:07:55,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 148 [2020-10-27 05:07:55,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-27 05:07:55,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:07:55,960 WARN L193 SmtUtils]: Spent 784.00 ms on a formula simplification that was a NOOP. DAG size: 397 [2020-10-27 05:07:55,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:07:55,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:07:55,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:55,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:07:55,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:07:55,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:07:55,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 05:07:55,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:07:55,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:07:55,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:07:55,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:07:55,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:07:56,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:07:56,056 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2073270887] [2020-10-27 05:07:56,056 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:07:56,056 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 05:07:56,056 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114980946] [2020-10-27 05:07:56,057 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 05:07:56,057 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:07:56,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 05:07:56,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 05:07:56,058 INFO L87 Difference]: Start difference. First operand 51233 states and 87286 transitions. Second operand 4 states. [2020-10-27 05:07:56,900 WARN L193 SmtUtils]: Spent 786.00 ms on a formula simplification that was a NOOP. DAG size: 399 [2020-10-27 05:08:09,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:08:09,133 INFO L93 Difference]: Finished difference Result 92711 states and 155770 transitions. [2020-10-27 05:08:09,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 05:08:09,135 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 197 [2020-10-27 05:08:09,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:08:09,244 INFO L225 Difference]: With dead ends: 92711 [2020-10-27 05:08:09,245 INFO L226 Difference]: Without dead ends: 71268 [2020-10-27 05:08:09,280 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:08:09,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71268 states. [2020-10-27 05:08:16,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71268 to 71265. [2020-10-27 05:08:16,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71265 states. [2020-10-27 05:08:16,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71265 states to 71265 states and 120054 transitions. [2020-10-27 05:08:16,832 INFO L78 Accepts]: Start accepts. Automaton has 71265 states and 120054 transitions. Word has length 197 [2020-10-27 05:08:16,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:08:16,833 INFO L481 AbstractCegarLoop]: Abstraction has 71265 states and 120054 transitions. [2020-10-27 05:08:16,833 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 05:08:16,833 INFO L276 IsEmpty]: Start isEmpty. Operand 71265 states and 120054 transitions. [2020-10-27 05:08:16,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2020-10-27 05:08:16,876 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:08:16,877 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] [2020-10-27 05:08:16,877 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 05:08:16,877 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:08:16,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:08:16,877 INFO L82 PathProgramCache]: Analyzing trace with hash -1134781818, now seen corresponding path program 1 times [2020-10-27 05:08:16,877 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:08:16,878 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1583941258] [2020-10-27 05:08:16,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:08:16,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:08:16,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:17,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:17,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:17,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:17,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:21,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:21,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:21,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:08:21,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 209 [2020-10-27 05:08:21,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 05:08:21,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5051 [2020-10-27 05:08:21,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:08:21,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:08:21,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:08:21,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 178 [2020-10-27 05:08:21,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:08:22,931 WARN L193 SmtUtils]: Spent 790.00 ms on a formula simplification that was a NOOP. DAG size: 397 [2020-10-27 05:08:22,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:08:22,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:08:22,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:22,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:08:22,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:08:22,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:08:22,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 05:08:22,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:08:22,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:08:22,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:08:22,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:08:22,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:08:23,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:08:23,119 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1583941258] [2020-10-27 05:08:23,119 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:08:23,119 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:08:23,119 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572918352] [2020-10-27 05:08:23,119 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:08:23,120 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:08:23,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:08:23,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:08:23,120 INFO L87 Difference]: Start difference. First operand 71265 states and 120054 transitions. Second operand 5 states. [2020-10-27 05:08:39,489 WARN L193 SmtUtils]: Spent 966.00 ms on a formula simplification that was a NOOP. DAG size: 403