/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.3.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 14:06:15,863 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 14:06:15,867 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 14:06:15,911 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 14:06:15,912 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 14:06:15,913 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 14:06:15,915 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 14:06:15,917 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 14:06:15,920 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 14:06:15,921 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 14:06:15,922 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 14:06:15,924 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 14:06:15,924 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 14:06:15,926 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 14:06:15,927 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 14:06:15,929 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 14:06:15,930 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 14:06:15,931 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 14:06:15,933 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 14:06:15,936 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 14:06:15,938 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 14:06:15,940 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 14:06:15,941 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 14:06:15,942 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 14:06:15,946 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 14:06:15,946 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 14:06:15,946 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 14:06:15,948 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 14:06:15,948 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 14:06:15,949 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 14:06:15,950 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 14:06:15,951 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 14:06:15,952 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 14:06:15,953 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 14:06:15,954 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 14:06:15,967 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 14:06:15,968 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 14:06:15,969 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 14:06:15,969 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 14:06:15,970 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 14:06:15,971 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 14:06:15,973 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 14:06:16,001 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 14:06:16,001 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 14:06:16,003 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 14:06:16,003 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 14:06:16,004 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 14:06:16,004 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 14:06:16,004 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 14:06:16,004 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 14:06:16,004 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 14:06:16,005 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 14:06:16,005 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 14:06:16,005 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 14:06:16,005 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 14:06:16,006 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 14:06:16,006 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 14:06:16,006 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 14:06:16,006 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 14:06:16,007 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 14:06:16,007 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 14:06:16,007 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 14:06:16,007 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 14:06:16,007 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 14:06:16,008 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 14:06:16,008 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 14:06:16,008 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 14:06:16,008 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 14:06:16,009 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 14:06:16,009 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 14:06:16,009 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 14:06:16,009 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 14:06:16,422 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 14:06:16,449 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 14:06:16,452 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 14:06:16,453 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 14:06:16,454 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 14:06:16,455 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.3.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2020-10-29 14:06:16,540 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4bd8d4b03/8a0e2f402d4b424787600f738d6a5d1e/FLAGa02467771 [2020-10-29 14:06:17,427 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 14:06:17,428 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.3.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2020-10-29 14:06:17,451 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4bd8d4b03/8a0e2f402d4b424787600f738d6a5d1e/FLAGa02467771 [2020-10-29 14:06:17,564 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4bd8d4b03/8a0e2f402d4b424787600f738d6a5d1e [2020-10-29 14:06:17,567 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 14:06:17,574 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 14:06:17,576 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 14:06:17,577 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 14:06:17,581 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 14:06:17,582 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 02:06:17" (1/1) ... [2020-10-29 14:06:17,587 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10f94fd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:06:17, skipping insertion in model container [2020-10-29 14:06:17,587 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 02:06:17" (1/1) ... [2020-10-29 14:06:17,596 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 14:06:17,752 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 14:06:19,573 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 14:06:19,597 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 14:06:20,449 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 14:06:20,499 INFO L208 MainTranslator]: Completed translation [2020-10-29 14:06:20,501 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:06:20 WrapperNode [2020-10-29 14:06:20,501 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 14:06:20,503 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 14:06:20,503 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 14:06:20,503 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 14:06:20,516 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:06:20" (1/1) ... [2020-10-29 14:06:20,516 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:06:20" (1/1) ... [2020-10-29 14:06:20,553 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:06:20" (1/1) ... [2020-10-29 14:06:20,554 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:06:20" (1/1) ... [2020-10-29 14:06:20,658 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:06:20" (1/1) ... [2020-10-29 14:06:20,700 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:06:20" (1/1) ... [2020-10-29 14:06:20,725 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:06:20" (1/1) ... [2020-10-29 14:06:20,749 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 14:06:20,752 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 14:06:20,752 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 14:06:20,752 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 14:06:20,753 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:06:20" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 14:06:20,853 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 14:06:20,853 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 14:06:20,853 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 14:06:20,854 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-29 14:06:20,854 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 14:06:20,855 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 14:06:20,856 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 14:06:20,856 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 14:06:20,856 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 14:06:20,856 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-29 14:06:20,857 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-29 14:06:20,857 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-29 14:06:20,858 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-29 14:06:20,858 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-29 14:06:20,858 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-29 14:06:20,859 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-29 14:06:20,859 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-29 14:06:20,859 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-29 14:06:20,859 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-29 14:06:20,860 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-29 14:06:20,860 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-29 14:06:20,860 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 14:06:20,860 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 14:06:20,860 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 14:06:20,860 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 14:06:20,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 14:06:20,861 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 14:06:20,861 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 14:06:24,734 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 14:06:24,734 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-29 14:06:24,738 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 02:06:24 BoogieIcfgContainer [2020-10-29 14:06:24,738 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 14:06:24,740 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 14:06:24,740 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 14:06:24,744 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 14:06:24,744 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 02:06:17" (1/3) ... [2020-10-29 14:06:24,745 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@386f25bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 02:06:24, skipping insertion in model container [2020-10-29 14:06:24,745 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:06:20" (2/3) ... [2020-10-29 14:06:24,746 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@386f25bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 02:06:24, skipping insertion in model container [2020-10-29 14:06:24,746 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 02:06:24" (3/3) ... [2020-10-29 14:06:24,748 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.3.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2020-10-29 14:06:24,761 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 14:06:24,769 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 14:06:24,783 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 14:06:24,822 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 14:06:24,822 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 14:06:24,822 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 14:06:24,823 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 14:06:24,823 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 14:06:24,823 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 14:06:24,823 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 14:06:24,823 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 14:06:24,864 INFO L276 IsEmpty]: Start isEmpty. Operand 996 states. [2020-10-29 14:06:24,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2020-10-29 14:06:24,907 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:06:24,908 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:06:24,909 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:06:24,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:06:24,916 INFO L82 PathProgramCache]: Analyzing trace with hash -1005847595, now seen corresponding path program 1 times [2020-10-29 14:06:24,926 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:06:24,926 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [451557306] [2020-10-29 14:06:24,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:06:25,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:06:25,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:26,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:27,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:27,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:28,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:28,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:28,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:28,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:29,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:29,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:29,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:30,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:30,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:30,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:30,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:06:30,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 327 [2020-10-29 14:06:30,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-29 14:06:30,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-29 14:06:30,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:06:30,696 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:06:30,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:06:30,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-29 14:06:30,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 214 [2020-10-29 14:06:30,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 14:06:32,040 WARN L193 SmtUtils]: Spent 988.00 ms on a formula simplification that was a NOOP. DAG size: 358 [2020-10-29 14:06:32,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:06:32,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:06:32,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:32,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:06:32,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:06:32,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:06:32,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-29 14:06:32,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:06:32,092 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:06:32,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:06:32,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:06:32,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:06:32,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 14:06:32,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:06:32,310 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [451557306] [2020-10-29 14:06:32,313 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:06:32,314 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 14:06:32,315 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940527612] [2020-10-29 14:06:32,326 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 14:06:32,326 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:06:32,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 14:06:32,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 14:06:32,350 INFO L87 Difference]: Start difference. First operand 996 states. Second operand 4 states. [2020-10-29 14:06:33,564 WARN L193 SmtUtils]: Spent 975.00 ms on a formula simplification that was a NOOP. DAG size: 359 [2020-10-29 14:06:41,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:06:41,639 INFO L93 Difference]: Finished difference Result 1703 states and 3030 transitions. [2020-10-29 14:06:41,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 14:06:41,642 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 319 [2020-10-29 14:06:41,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:06:41,678 INFO L225 Difference]: With dead ends: 1703 [2020-10-29 14:06:41,678 INFO L226 Difference]: Without dead ends: 1425 [2020-10-29 14:06:41,685 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:06:41,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1425 states. [2020-10-29 14:06:41,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1425 to 1422. [2020-10-29 14:06:41,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1422 states. [2020-10-29 14:06:41,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1422 states to 1422 states and 2205 transitions. [2020-10-29 14:06:41,879 INFO L78 Accepts]: Start accepts. Automaton has 1422 states and 2205 transitions. Word has length 319 [2020-10-29 14:06:41,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:06:41,887 INFO L481 AbstractCegarLoop]: Abstraction has 1422 states and 2205 transitions. [2020-10-29 14:06:41,887 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 14:06:41,887 INFO L276 IsEmpty]: Start isEmpty. Operand 1422 states and 2205 transitions. [2020-10-29 14:06:41,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2020-10-29 14:06:41,898 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:06:41,900 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:06:41,903 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 14:06:41,904 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:06:41,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:06:41,905 INFO L82 PathProgramCache]: Analyzing trace with hash 348435370, now seen corresponding path program 1 times [2020-10-29 14:06:41,905 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:06:41,906 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [928388070] [2020-10-29 14:06:41,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:06:42,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:06:42,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:42,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:42,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:43,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:43,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:43,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:43,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:43,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:44,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:44,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:44,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:44,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:44,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:45,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:45,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:47,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:06:47,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 327 [2020-10-29 14:06:47,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-29 14:06:47,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5070 [2020-10-29 14:06:47,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:06:47,101 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:06:47,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:06:47,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 87 [2020-10-29 14:06:47,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 220 [2020-10-29 14:06:47,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 14:06:48,166 WARN L193 SmtUtils]: Spent 879.00 ms on a formula simplification that was a NOOP. DAG size: 358 [2020-10-29 14:06:48,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:06:48,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:06:48,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:48,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:06:48,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:06:48,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:06:48,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-29 14:06:48,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:06:48,206 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:06:48,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:06:48,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:06:48,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:06:48,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:06:48,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:06:48,403 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [928388070] [2020-10-29 14:06:48,403 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:06:48,403 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 14:06:48,404 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257011738] [2020-10-29 14:06:48,405 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 14:06:48,406 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:06:48,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 14:06:48,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 14:06:48,407 INFO L87 Difference]: Start difference. First operand 1422 states and 2205 transitions. Second operand 4 states. [2020-10-29 14:06:49,361 WARN L193 SmtUtils]: Spent 889.00 ms on a formula simplification that was a NOOP. DAG size: 359 [2020-10-29 14:06:57,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:06:57,113 INFO L93 Difference]: Finished difference Result 2727 states and 4267 transitions. [2020-10-29 14:06:57,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 14:06:57,114 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 319 [2020-10-29 14:06:57,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:06:57,129 INFO L225 Difference]: With dead ends: 2727 [2020-10-29 14:06:57,130 INFO L226 Difference]: Without dead ends: 2315 [2020-10-29 14:06:57,134 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:06:57,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2315 states. [2020-10-29 14:06:57,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2315 to 2312. [2020-10-29 14:06:57,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2312 states. [2020-10-29 14:06:57,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2312 states to 2312 states and 3593 transitions. [2020-10-29 14:06:57,241 INFO L78 Accepts]: Start accepts. Automaton has 2312 states and 3593 transitions. Word has length 319 [2020-10-29 14:06:57,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:06:57,242 INFO L481 AbstractCegarLoop]: Abstraction has 2312 states and 3593 transitions. [2020-10-29 14:06:57,242 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 14:06:57,242 INFO L276 IsEmpty]: Start isEmpty. Operand 2312 states and 3593 transitions. [2020-10-29 14:06:57,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2020-10-29 14:06:57,251 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:06:57,251 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:06:57,252 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 14:06:57,252 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:06:57,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:06:57,253 INFO L82 PathProgramCache]: Analyzing trace with hash -499614653, now seen corresponding path program 1 times [2020-10-29 14:06:57,253 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:06:57,253 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1616637586] [2020-10-29 14:06:57,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:06:57,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:06:57,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:57,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:58,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:58,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:58,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:58,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:58,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:59,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:59,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:59,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:59,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:59,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:59,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:00,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:02,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:07:02,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 327 [2020-10-29 14:07:02,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-29 14:07:02,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5053 [2020-10-29 14:07:02,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:07:02,423 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:07:02,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:07:02,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 89 [2020-10-29 14:07:02,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 232 [2020-10-29 14:07:02,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 14:07:03,530 WARN L193 SmtUtils]: Spent 912.00 ms on a formula simplification that was a NOOP. DAG size: 358 [2020-10-29 14:07:03,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:07:03,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:07:03,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:03,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:07:03,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:07:03,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:07:03,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 14:07:03,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:07:03,564 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:07:03,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:07:03,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:07:03,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:07:03,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:07:03,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:07:03,760 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1616637586] [2020-10-29 14:07:03,760 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:07:03,760 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 14:07:03,760 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231447788] [2020-10-29 14:07:03,761 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 14:07:03,762 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:07:03,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 14:07:03,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 14:07:03,763 INFO L87 Difference]: Start difference. First operand 2312 states and 3593 transitions. Second operand 4 states. [2020-10-29 14:07:04,751 WARN L193 SmtUtils]: Spent 924.00 ms on a formula simplification that was a NOOP. DAG size: 359 [2020-10-29 14:07:12,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:07:12,266 INFO L93 Difference]: Finished difference Result 4785 states and 7516 transitions. [2020-10-29 14:07:12,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 14:07:12,267 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 319 [2020-10-29 14:07:12,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:07:12,290 INFO L225 Difference]: With dead ends: 4785 [2020-10-29 14:07:12,291 INFO L226 Difference]: Without dead ends: 4143 [2020-10-29 14:07:12,294 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:07:12,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4143 states. [2020-10-29 14:07:12,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4143 to 4140. [2020-10-29 14:07:12,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4140 states. [2020-10-29 14:07:12,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4140 states to 4140 states and 6445 transitions. [2020-10-29 14:07:12,467 INFO L78 Accepts]: Start accepts. Automaton has 4140 states and 6445 transitions. Word has length 319 [2020-10-29 14:07:12,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:07:12,468 INFO L481 AbstractCegarLoop]: Abstraction has 4140 states and 6445 transitions. [2020-10-29 14:07:12,468 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 14:07:12,468 INFO L276 IsEmpty]: Start isEmpty. Operand 4140 states and 6445 transitions. [2020-10-29 14:07:12,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2020-10-29 14:07:12,480 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:07:12,481 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:07:12,481 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 14:07:12,481 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:07:12,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:07:12,482 INFO L82 PathProgramCache]: Analyzing trace with hash -510111718, now seen corresponding path program 1 times [2020-10-29 14:07:12,482 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:07:12,482 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1234768554] [2020-10-29 14:07:12,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:07:12,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:07:12,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:13,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:13,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:13,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:13,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:14,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:14,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:14,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:14,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:14,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:14,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:14,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:15,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:15,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:17,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:07:17,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 327 [2020-10-29 14:07:17,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-29 14:07:17,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-29 14:07:17,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:07:17,715 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:07:17,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:07:17,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:07:17,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-29 14:07:17,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:07:18,891 WARN L193 SmtUtils]: Spent 876.00 ms on a formula simplification that was a NOOP. DAG size: 358 [2020-10-29 14:07:18,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:07:18,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:07:18,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:18,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:07:18,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:07:18,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:07:18,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 14:07:18,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:07:18,925 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:07:18,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:07:18,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:07:18,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:07:18,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:07:19,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:07:19,165 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1234768554] [2020-10-29 14:07:19,165 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:07:19,165 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:07:19,166 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907904304] [2020-10-29 14:07:19,166 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:07:19,167 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:07:19,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:07:19,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:07:19,167 INFO L87 Difference]: Start difference. First operand 4140 states and 6445 transitions. Second operand 5 states. [2020-10-29 14:07:28,944 WARN L193 SmtUtils]: Spent 907.00 ms on a formula simplification that was a NOOP. DAG size: 364 [2020-10-29 14:07:31,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:07:31,915 INFO L93 Difference]: Finished difference Result 12200 states and 18962 transitions. [2020-10-29 14:07:31,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 14:07:31,916 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 319 [2020-10-29 14:07:31,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:07:31,979 INFO L225 Difference]: With dead ends: 12200 [2020-10-29 14:07:31,980 INFO L226 Difference]: Without dead ends: 8099 [2020-10-29 14:07:31,990 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 14:07:31,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8099 states. [2020-10-29 14:07:32,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8099 to 7998. [2020-10-29 14:07:32,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7998 states. [2020-10-29 14:07:32,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7998 states to 7998 states and 12383 transitions. [2020-10-29 14:07:32,419 INFO L78 Accepts]: Start accepts. Automaton has 7998 states and 12383 transitions. Word has length 319 [2020-10-29 14:07:32,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:07:32,420 INFO L481 AbstractCegarLoop]: Abstraction has 7998 states and 12383 transitions. [2020-10-29 14:07:32,420 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:07:32,420 INFO L276 IsEmpty]: Start isEmpty. Operand 7998 states and 12383 transitions. [2020-10-29 14:07:32,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2020-10-29 14:07:32,439 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:07:32,440 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:07:32,440 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 14:07:32,440 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:07:32,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:07:32,441 INFO L82 PathProgramCache]: Analyzing trace with hash -110349781, now seen corresponding path program 1 times [2020-10-29 14:07:32,441 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:07:32,442 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [646169419] [2020-10-29 14:07:32,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:07:32,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:07:32,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:32,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:32,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:32,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:33,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:33,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:34,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:34,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:34,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:34,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:34,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:34,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:34,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:34,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:37,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:07:37,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 329 [2020-10-29 14:07:37,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-29 14:07:37,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-29 14:07:37,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:07:37,522 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:07:37,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:07:37,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:07:37,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-29 14:07:37,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:07:38,598 WARN L193 SmtUtils]: Spent 925.00 ms on a formula simplification that was a NOOP. DAG size: 358 [2020-10-29 14:07:38,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:07:38,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:07:38,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:38,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:07:38,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:07:38,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:07:38,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-29 14:07:38,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:07:38,632 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:07:38,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:07:38,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:07:38,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:07:38,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:07:38,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:07:38,753 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [646169419] [2020-10-29 14:07:38,753 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:07:38,753 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:07:38,753 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783999420] [2020-10-29 14:07:38,754 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:07:38,754 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:07:38,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:07:38,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:07:38,755 INFO L87 Difference]: Start difference. First operand 7998 states and 12383 transitions. Second operand 5 states. [2020-10-29 14:07:47,943 WARN L193 SmtUtils]: Spent 983.00 ms on a formula simplification that was a NOOP. DAG size: 364 [2020-10-29 14:07:50,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:07:50,818 INFO L93 Difference]: Finished difference Result 23576 states and 36436 transitions. [2020-10-29 14:07:50,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 14:07:50,819 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 321 [2020-10-29 14:07:50,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:07:50,881 INFO L225 Difference]: With dead ends: 23576 [2020-10-29 14:07:50,881 INFO L226 Difference]: Without dead ends: 15624 [2020-10-29 14:07:50,901 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 14:07:50,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15624 states. [2020-10-29 14:07:51,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15624 to 15539. [2020-10-29 14:07:51,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15539 states. [2020-10-29 14:07:51,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15539 states to 15539 states and 23899 transitions. [2020-10-29 14:07:51,783 INFO L78 Accepts]: Start accepts. Automaton has 15539 states and 23899 transitions. Word has length 321 [2020-10-29 14:07:51,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:07:51,783 INFO L481 AbstractCegarLoop]: Abstraction has 15539 states and 23899 transitions. [2020-10-29 14:07:51,783 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:07:51,783 INFO L276 IsEmpty]: Start isEmpty. Operand 15539 states and 23899 transitions. [2020-10-29 14:07:51,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2020-10-29 14:07:51,813 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:07:51,813 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:07:51,814 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 14:07:51,814 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:07:51,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:07:51,814 INFO L82 PathProgramCache]: Analyzing trace with hash -1793032411, now seen corresponding path program 1 times [2020-10-29 14:07:51,815 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:07:51,815 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [633472871] [2020-10-29 14:07:51,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:07:51,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:07:51,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:51,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:52,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:52,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:52,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:52,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:52,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:52,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:53,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:53,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:53,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:53,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:53,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:53,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:55,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:55,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:55,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:56,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:56,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:07:56,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 331 [2020-10-29 14:07:56,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-29 14:07:56,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-29 14:07:56,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:07:56,874 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:07:56,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:07:56,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:07:56,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-29 14:07:56,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:07:57,924 WARN L193 SmtUtils]: Spent 892.00 ms on a formula simplification that was a NOOP. DAG size: 358 [2020-10-29 14:07:57,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:07:57,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:07:57,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:57,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:07:57,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:07:57,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:07:57,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 14:07:57,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:07:57,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:07:57,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:07:57,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:07:57,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:07:57,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:07:58,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:07:58,089 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [633472871] [2020-10-29 14:07:58,089 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:07:58,090 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:07:58,090 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814160659] [2020-10-29 14:07:58,091 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:07:58,091 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:07:58,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:07:58,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:07:58,092 INFO L87 Difference]: Start difference. First operand 15539 states and 23899 transitions. Second operand 5 states. [2020-10-29 14:08:09,093 WARN L193 SmtUtils]: Spent 1.09 s on a formula simplification that was a NOOP. DAG size: 364 [2020-10-29 14:08:12,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:08:12,601 INFO L93 Difference]: Finished difference Result 45837 states and 70387 transitions. [2020-10-29 14:08:12,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 14:08:12,603 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 323 [2020-10-29 14:08:12,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:08:12,669 INFO L225 Difference]: With dead ends: 45837 [2020-10-29 14:08:12,670 INFO L226 Difference]: Without dead ends: 30408 [2020-10-29 14:08:12,703 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 14:08:12,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30408 states. [2020-10-29 14:08:14,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30408 to 30115. [2020-10-29 14:08:14,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30115 states. [2020-10-29 14:08:14,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30115 states to 30115 states and 46043 transitions. [2020-10-29 14:08:14,399 INFO L78 Accepts]: Start accepts. Automaton has 30115 states and 46043 transitions. Word has length 323 [2020-10-29 14:08:14,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:08:14,399 INFO L481 AbstractCegarLoop]: Abstraction has 30115 states and 46043 transitions. [2020-10-29 14:08:14,399 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:08:14,399 INFO L276 IsEmpty]: Start isEmpty. Operand 30115 states and 46043 transitions. [2020-10-29 14:08:14,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2020-10-29 14:08:14,454 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:08:14,454 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:08:14,454 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 14:08:14,455 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:08:14,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:08:14,455 INFO L82 PathProgramCache]: Analyzing trace with hash 2023273982, now seen corresponding path program 1 times [2020-10-29 14:08:14,455 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:08:14,456 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1042351438] [2020-10-29 14:08:14,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:08:14,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:08:14,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:08:14,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:08:14,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:08:14,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:08:14,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:08:14,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:08:14,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:08:15,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:08:15,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:08:15,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:08:15,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:08:15,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:08:15,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:08:19,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:08:19,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 333 [2020-10-29 14:08:19,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-29 14:08:19,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-29 14:08:19,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:08:19,522 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:08:19,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:08:19,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-29 14:08:19,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-29 14:08:19,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:08:20,527 WARN L193 SmtUtils]: Spent 903.00 ms on a formula simplification that was a NOOP. DAG size: 358 [2020-10-29 14:08:20,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:08:20,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:08:20,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:08:20,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:08:20,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:08:20,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:08:20,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 14:08:20,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:08:20,551 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:08:20,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:08:20,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:08:20,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:08:20,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:08:20,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:08:20,700 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1042351438] [2020-10-29 14:08:20,700 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:08:20,700 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 14:08:20,700 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422770298] [2020-10-29 14:08:20,701 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 14:08:20,701 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:08:20,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 14:08:20,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 14:08:20,702 INFO L87 Difference]: Start difference. First operand 30115 states and 46043 transitions. Second operand 4 states. [2020-10-29 14:08:33,028 WARN L193 SmtUtils]: Spent 999.00 ms on a formula simplification that was a NOOP. DAG size: 363 [2020-10-29 14:08:36,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:08:36,641 INFO L93 Difference]: Finished difference Result 88747 states and 135442 transitions. [2020-10-29 14:08:36,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 14:08:36,643 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 325 [2020-10-29 14:08:36,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:08:36,764 INFO L225 Difference]: With dead ends: 88747 [2020-10-29 14:08:36,765 INFO L226 Difference]: Without dead ends: 58950 [2020-10-29 14:08:36,831 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:08:36,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58950 states. [2020-10-29 14:08:39,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58950 to 58657. [2020-10-29 14:08:39,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58657 states. [2020-10-29 14:08:40,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58657 states to 58657 states and 89102 transitions. [2020-10-29 14:08:40,067 INFO L78 Accepts]: Start accepts. Automaton has 58657 states and 89102 transitions. Word has length 325 [2020-10-29 14:08:40,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:08:40,067 INFO L481 AbstractCegarLoop]: Abstraction has 58657 states and 89102 transitions. [2020-10-29 14:08:40,067 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 14:08:40,069 INFO L276 IsEmpty]: Start isEmpty. Operand 58657 states and 89102 transitions. [2020-10-29 14:08:40,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2020-10-29 14:08:40,190 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:08:40,190 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:08:40,191 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 14:08:40,191 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:08:40,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:08:40,191 INFO L82 PathProgramCache]: Analyzing trace with hash -834178855, now seen corresponding path program 1 times [2020-10-29 14:08:40,192 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:08:40,192 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [298685932] [2020-10-29 14:08:40,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:08:40,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:08:40,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:08:40,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:08:40,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:08:40,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:08:40,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:08:40,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:08:40,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:08:40,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:08:41,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:08:41,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:08:41,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:08:41,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:08:41,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:08:42,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:08:43,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:08:43,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:08:43,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:08:45,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:08:45,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 333 [2020-10-29 14:08:45,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-29 14:08:45,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5047 [2020-10-29 14:08:45,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:08:45,280 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:08:45,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:08:45,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:08:45,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-29 14:08:45,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:08:46,327 WARN L193 SmtUtils]: Spent 929.00 ms on a formula simplification that was a NOOP. DAG size: 358 [2020-10-29 14:08:46,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:08:46,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:08:46,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:08:46,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:08:46,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:08:46,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:08:46,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 14:08:46,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:08:46,357 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:08:46,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:08:46,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:08:46,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:08:46,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:08:46,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:08:46,521 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [298685932] [2020-10-29 14:08:46,521 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:08:46,521 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:08:46,522 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602113367] [2020-10-29 14:08:46,524 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:08:46,524 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:08:46,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:08:46,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:08:46,525 INFO L87 Difference]: Start difference. First operand 58657 states and 89102 transitions. Second operand 5 states. [2020-10-29 14:08:59,249 WARN L193 SmtUtils]: Spent 991.00 ms on a formula simplification that was a NOOP. DAG size: 364 [2020-10-29 14:09:03,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:09:03,823 INFO L93 Difference]: Finished difference Result 166777 states and 252774 transitions. [2020-10-29 14:09:03,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 14:09:03,824 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 325 [2020-10-29 14:09:03,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:09:04,001 INFO L225 Difference]: With dead ends: 166777 [2020-10-29 14:09:04,001 INFO L226 Difference]: Without dead ends: 108568 [2020-10-29 14:09:04,287 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 14:09:04,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108568 states. [2020-10-29 14:09:09,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108568 to 108275. [2020-10-29 14:09:09,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108275 states. [2020-10-29 14:09:10,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108275 states to 108275 states and 163124 transitions. [2020-10-29 14:09:10,067 INFO L78 Accepts]: Start accepts. Automaton has 108275 states and 163124 transitions. Word has length 325 [2020-10-29 14:09:10,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:09:10,067 INFO L481 AbstractCegarLoop]: Abstraction has 108275 states and 163124 transitions. [2020-10-29 14:09:10,067 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:09:10,067 INFO L276 IsEmpty]: Start isEmpty. Operand 108275 states and 163124 transitions. [2020-10-29 14:09:10,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2020-10-29 14:09:10,176 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:09:10,177 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:09:10,177 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 14:09:10,177 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:09:10,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:09:10,178 INFO L82 PathProgramCache]: Analyzing trace with hash 53483743, now seen corresponding path program 1 times [2020-10-29 14:09:10,178 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:09:10,178 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1614849958] [2020-10-29 14:09:10,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:09:10,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:09:10,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:09:10,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:09:10,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:09:10,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:09:10,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:09:10,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:09:10,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:09:10,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:09:11,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:09:11,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:09:11,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:09:11,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:09:15,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:09:15,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:09:15,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 335 [2020-10-29 14:09:15,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-29 14:09:15,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-29 14:09:15,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:09:15,467 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:09:15,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:09:15,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:09:15,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 151 [2020-10-29 14:09:15,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:09:16,576 WARN L193 SmtUtils]: Spent 922.00 ms on a formula simplification that was a NOOP. DAG size: 358 [2020-10-29 14:09:16,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:09:16,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:09:16,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:09:16,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:09:16,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:09:16,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:09:16,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 14:09:16,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:09:16,608 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:09:16,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:09:16,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:09:16,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:09:16,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:09:16,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:09:16,795 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1614849958] [2020-10-29 14:09:16,795 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:09:16,795 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:09:16,795 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198562199] [2020-10-29 14:09:16,796 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:09:16,796 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:09:16,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:09:16,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:09:16,797 INFO L87 Difference]: Start difference. First operand 108275 states and 163124 transitions. Second operand 5 states. [2020-10-29 14:09:32,960 WARN L193 SmtUtils]: Spent 982.00 ms on a formula simplification that was a NOOP. DAG size: 364 [2020-10-29 14:09:39,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:09:39,465 INFO L93 Difference]: Finished difference Result 319709 states and 480791 transitions. [2020-10-29 14:09:39,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 14:09:39,466 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 327 [2020-10-29 14:09:39,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:09:40,016 INFO L225 Difference]: With dead ends: 319709 [2020-10-29 14:09:40,017 INFO L226 Difference]: Without dead ends: 211722 [2020-10-29 14:09:40,148 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 14:09:40,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211722 states. [2020-10-29 14:09:51,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211722 to 211429. [2020-10-29 14:09:51,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211429 states. [2020-10-29 14:09:52,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211429 states to 211429 states and 315955 transitions. [2020-10-29 14:09:52,410 INFO L78 Accepts]: Start accepts. Automaton has 211429 states and 315955 transitions. Word has length 327 [2020-10-29 14:09:52,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:09:52,411 INFO L481 AbstractCegarLoop]: Abstraction has 211429 states and 315955 transitions. [2020-10-29 14:09:52,411 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:09:52,411 INFO L276 IsEmpty]: Start isEmpty. Operand 211429 states and 315955 transitions. [2020-10-29 14:09:52,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2020-10-29 14:09:52,606 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:09:52,607 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:09:52,607 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 14:09:52,607 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:09:52,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:09:52,608 INFO L82 PathProgramCache]: Analyzing trace with hash 1875116228, now seen corresponding path program 1 times [2020-10-29 14:09:52,608 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:09:52,608 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2024912862] [2020-10-29 14:09:52,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:09:52,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:09:53,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:09:53,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:09:53,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:09:53,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:09:53,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:09:53,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:09:53,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:09:53,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking...