/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --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_lcr-var-start-time.6.2.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 19:09:15,795 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 19:09:15,800 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 19:09:15,862 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 19:09:15,862 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 19:09:15,871 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 19:09:15,873 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 19:09:15,878 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 19:09:15,881 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 19:09:15,889 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 19:09:15,890 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 19:09:15,892 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 19:09:15,892 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 19:09:15,895 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 19:09:15,898 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 19:09:15,900 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 19:09:15,901 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 19:09:15,905 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 19:09:15,914 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 19:09:15,917 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 19:09:15,921 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 19:09:15,922 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 19:09:15,923 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 19:09:15,924 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 19:09:15,927 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 19:09:15,927 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 19:09:15,928 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 19:09:15,929 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 19:09:15,929 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 19:09:15,931 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 19:09:15,931 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 19:09:15,932 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 19:09:15,933 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 19:09:15,934 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 19:09:15,935 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 19:09:15,935 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 19:09:15,936 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 19:09:15,936 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 19:09:15,936 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 19:09:15,937 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 19:09:15,948 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 19:09:15,949 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 [2020-10-28 19:09:15,976 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 19:09:15,976 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 19:09:15,978 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 19:09:15,978 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 19:09:15,978 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 19:09:15,978 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 19:09:15,979 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 19:09:15,979 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 19:09:15,979 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 19:09:15,979 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 19:09:15,979 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 19:09:15,980 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 19:09:15,980 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 19:09:15,980 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 19:09:15,980 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 19:09:15,980 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 19:09:15,981 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 19:09:15,981 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 19:09:15,981 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 19:09:15,981 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 19:09:15,981 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 19:09:15,982 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 19:09:15,982 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 19:09:15,982 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 19:09:15,982 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 19:09:15,983 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 19:09:15,983 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 19:09:15,983 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 19:09:15,983 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 19:09:15,983 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 19:09:16,388 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 19:09:16,436 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 19:09:16,441 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 19:09:16,442 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 19:09:16,443 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 19:09:16,444 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.6.2.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c [2020-10-28 19:09:16,514 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/30df39e82/25f39c2bfc9648c084f86ed92962793d/FLAGc13387097 [2020-10-28 19:09:17,280 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 19:09:17,281 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.6.2.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c [2020-10-28 19:09:17,298 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/30df39e82/25f39c2bfc9648c084f86ed92962793d/FLAGc13387097 [2020-10-28 19:09:17,522 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/30df39e82/25f39c2bfc9648c084f86ed92962793d [2020-10-28 19:09:17,525 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 19:09:17,531 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 19:09:17,533 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 19:09:17,534 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 19:09:17,538 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 19:09:17,539 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 07:09:17" (1/1) ... [2020-10-28 19:09:17,543 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2460f1e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:09:17, skipping insertion in model container [2020-10-28 19:09:17,543 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 07:09:17" (1/1) ... [2020-10-28 19:09:17,552 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 19:09:17,609 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 19:09:18,081 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 19:09:18,101 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 19:09:18,321 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 19:09:18,351 INFO L208 MainTranslator]: Completed translation [2020-10-28 19:09:18,352 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:09:18 WrapperNode [2020-10-28 19:09:18,352 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 19:09:18,353 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 19:09:18,353 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 19:09:18,353 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 19:09:18,369 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:09:18" (1/1) ... [2020-10-28 19:09:18,371 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:09:18" (1/1) ... [2020-10-28 19:09:18,412 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:09:18" (1/1) ... [2020-10-28 19:09:18,413 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:09:18" (1/1) ... [2020-10-28 19:09:18,467 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:09:18" (1/1) ... [2020-10-28 19:09:18,490 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:09:18" (1/1) ... [2020-10-28 19:09:18,506 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:09:18" (1/1) ... [2020-10-28 19:09:18,516 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 19:09:18,520 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 19:09:18,521 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 19:09:18,521 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 19:09:18,522 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:09:18" (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 [2020-10-28 19:09:18,638 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 19:09:18,638 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 19:09:18,639 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 19:09:18,639 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-28 19:09:18,640 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 19:09:18,640 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 19:09:18,640 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 19:09:18,640 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 19:09:18,640 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 19:09:18,641 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-28 19:09:18,641 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-28 19:09:18,642 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-28 19:09:18,642 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-28 19:09:18,642 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-28 19:09:18,642 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-28 19:09:18,643 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-28 19:09:18,643 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-28 19:09:18,643 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-28 19:09:18,643 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-28 19:09:18,643 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-28 19:09:18,644 INFO L130 BoogieDeclarations]: Found specification of procedure node6 [2020-10-28 19:09:18,644 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-28 19:09:18,644 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-28 19:09:18,644 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 19:09:18,644 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 19:09:18,644 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 19:09:18,644 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 19:09:18,645 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 19:09:18,645 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 19:09:18,645 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 19:09:19,973 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 19:09:19,973 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-28 19:09:19,978 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 07:09:19 BoogieIcfgContainer [2020-10-28 19:09:19,979 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 19:09:19,982 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 19:09:19,982 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 19:09:19,987 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 19:09:19,987 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 07:09:17" (1/3) ... [2020-10-28 19:09:19,989 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55456077 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 07:09:19, skipping insertion in model container [2020-10-28 19:09:19,989 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:09:18" (2/3) ... [2020-10-28 19:09:19,989 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55456077 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 07:09:19, skipping insertion in model container [2020-10-28 19:09:19,990 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 07:09:19" (3/3) ... [2020-10-28 19:09:19,991 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.6.2.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c [2020-10-28 19:09:20,006 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 19:09:20,013 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 19:09:20,027 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 19:09:20,070 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 19:09:20,070 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 19:09:20,070 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 19:09:20,070 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 19:09:20,071 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 19:09:20,071 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 19:09:20,071 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 19:09:20,071 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 19:09:20,110 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states. [2020-10-28 19:09:20,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-28 19:09:20,128 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:09:20,129 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] [2020-10-28 19:09:20,130 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:09:20,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:09:20,139 INFO L82 PathProgramCache]: Analyzing trace with hash -376386357, now seen corresponding path program 1 times [2020-10-28 19:09:20,151 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:09:20,151 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [477735190] [2020-10-28 19:09:20,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:09:20,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:09:20,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:09:20,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:09:21,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:09:25,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:09:25,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-28 19:09:25,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 19:09:25,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5039 [2020-10-28 19:09:25,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:09:25,585 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:09:25,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:09:25,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-28 19:09:25,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-28 19:09:25,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 19:09:26,232 WARN L193 SmtUtils]: Spent 464.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-28 19:09:26,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:09:26,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:09:26,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:09:26,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:09:26,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:09:26,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:09:26,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-28 19:09:26,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:09:26,267 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:09:26,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:09:26,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:09:26,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:09:26,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 19:09:26,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:09:26,315 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [477735190] [2020-10-28 19:09:26,317 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:09:26,317 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 19:09:26,318 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143561583] [2020-10-28 19:09:26,323 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 19:09:26,323 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:09:26,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 19:09:26,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 19:09:26,340 INFO L87 Difference]: Start difference. First operand 259 states. Second operand 4 states. [2020-10-28 19:09:26,822 WARN L193 SmtUtils]: Spent 415.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-28 19:09:28,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:09:28,329 INFO L93 Difference]: Finished difference Result 516 states and 848 transitions. [2020-10-28 19:09:28,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 19:09:28,336 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 101 [2020-10-28 19:09:28,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:09:28,378 INFO L225 Difference]: With dead ends: 516 [2020-10-28 19:09:28,378 INFO L226 Difference]: Without dead ends: 388 [2020-10-28 19:09:28,386 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:09:28,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2020-10-28 19:09:28,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 385. [2020-10-28 19:09:28,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 385 states. [2020-10-28 19:09:28,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 573 transitions. [2020-10-28 19:09:28,480 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 573 transitions. Word has length 101 [2020-10-28 19:09:28,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:09:28,481 INFO L481 AbstractCegarLoop]: Abstraction has 385 states and 573 transitions. [2020-10-28 19:09:28,481 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 19:09:28,482 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 573 transitions. [2020-10-28 19:09:28,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-28 19:09:28,487 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:09:28,487 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] [2020-10-28 19:09:28,487 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 19:09:28,488 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:09:28,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:09:28,489 INFO L82 PathProgramCache]: Analyzing trace with hash -215852236, now seen corresponding path program 1 times [2020-10-28 19:09:28,489 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:09:28,489 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1851896802] [2020-10-28 19:09:28,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:09:28,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:09:28,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:09:29,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:09:30,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:09:30,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-28 19:09:30,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 19:09:30,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1777 [2020-10-28 19:09:30,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:09:30,336 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:09:30,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 19:09:30,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-10-28 19:09:30,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-28 19:09:30,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 19:09:30,831 WARN L193 SmtUtils]: Spent 367.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-28 19:09:30,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:09:30,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:09:30,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:09:30,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:09:30,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:09:30,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:09:30,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 19:09:30,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:09:30,866 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:09:30,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:09:30,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:09:30,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:09:30,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:09:30,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:09:30,933 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1851896802] [2020-10-28 19:09:30,936 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:09:30,936 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 19:09:30,937 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733717194] [2020-10-28 19:09:30,940 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 19:09:30,941 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:09:30,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 19:09:30,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:09:30,948 INFO L87 Difference]: Start difference. First operand 385 states and 573 transitions. Second operand 5 states. [2020-10-28 19:09:32,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:09:32,457 INFO L93 Difference]: Finished difference Result 595 states and 904 transitions. [2020-10-28 19:09:32,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 19:09:32,458 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 102 [2020-10-28 19:09:32,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:09:32,472 INFO L225 Difference]: With dead ends: 595 [2020-10-28 19:09:32,473 INFO L226 Difference]: Without dead ends: 592 [2020-10-28 19:09:32,477 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 19:09:32,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 592 states. [2020-10-28 19:09:32,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 592 to 387. [2020-10-28 19:09:32,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 387 states. [2020-10-28 19:09:32,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 575 transitions. [2020-10-28 19:09:32,575 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 575 transitions. Word has length 102 [2020-10-28 19:09:32,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:09:32,576 INFO L481 AbstractCegarLoop]: Abstraction has 387 states and 575 transitions. [2020-10-28 19:09:32,576 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 19:09:32,576 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 575 transitions. [2020-10-28 19:09:32,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-28 19:09:32,579 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:09:32,579 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] [2020-10-28 19:09:32,579 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 19:09:32,580 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:09:32,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:09:32,580 INFO L82 PathProgramCache]: Analyzing trace with hash -936369326, now seen corresponding path program 1 times [2020-10-28 19:09:32,581 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:09:32,581 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1608495652] [2020-10-28 19:09:32,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:09:32,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:09:32,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:09:33,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:09:34,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:09:34,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 19:09:34,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 19:09:34,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1591 [2020-10-28 19:09:34,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:09:34,239 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:09:34,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 19:09:34,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 19:09:34,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-28 19:09:34,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:09:34,773 WARN L193 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-28 19:09:34,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:09:34,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:09:34,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:09:34,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:09:34,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:09:34,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:09:34,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 19:09:34,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:09:34,797 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:09:34,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:09:34,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:09:34,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:09:34,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 19:09:34,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:09:34,863 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1608495652] [2020-10-28 19:09:34,863 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:09:34,863 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 19:09:34,864 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455942671] [2020-10-28 19:09:34,865 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 19:09:34,866 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:09:34,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 19:09:34,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:09:34,868 INFO L87 Difference]: Start difference. First operand 387 states and 575 transitions. Second operand 5 states. [2020-10-28 19:09:35,289 WARN L193 SmtUtils]: Spent 382.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2020-10-28 19:09:36,362 WARN L193 SmtUtils]: Spent 375.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-28 19:09:36,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:09:36,839 INFO L93 Difference]: Finished difference Result 820 states and 1258 transitions. [2020-10-28 19:09:36,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 19:09:36,839 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 103 [2020-10-28 19:09:36,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:09:36,844 INFO L225 Difference]: With dead ends: 820 [2020-10-28 19:09:36,844 INFO L226 Difference]: Without dead ends: 597 [2020-10-28 19:09:36,846 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-28 19:09:36,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 597 states. [2020-10-28 19:09:36,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 597 to 594. [2020-10-28 19:09:36,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 594 states. [2020-10-28 19:09:36,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 594 states to 594 states and 902 transitions. [2020-10-28 19:09:36,908 INFO L78 Accepts]: Start accepts. Automaton has 594 states and 902 transitions. Word has length 103 [2020-10-28 19:09:36,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:09:36,910 INFO L481 AbstractCegarLoop]: Abstraction has 594 states and 902 transitions. [2020-10-28 19:09:36,910 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 19:09:36,910 INFO L276 IsEmpty]: Start isEmpty. Operand 594 states and 902 transitions. [2020-10-28 19:09:36,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-28 19:09:36,919 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:09:36,919 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] [2020-10-28 19:09:36,919 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 19:09:36,920 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:09:36,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:09:36,920 INFO L82 PathProgramCache]: Analyzing trace with hash -73173169, now seen corresponding path program 1 times [2020-10-28 19:09:36,920 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:09:36,921 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1018293478] [2020-10-28 19:09:36,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:09:36,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:09:37,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:09:37,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:09:37,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:09:37,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:09:39,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:09:41,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:09:41,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 19:09:41,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 19:09:41,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-28 19:09:41,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:09:41,994 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:09:41,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:09:41,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-28 19:09:41,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-28 19:09:41,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:09:42,466 WARN L193 SmtUtils]: Spent 389.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-28 19:09:42,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:09:42,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:09:42,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:09:42,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:09:42,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:09:42,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:09:42,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 19:09:42,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:09:42,498 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:09:42,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:09:42,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:09:42,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:09:42,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:09:42,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:09:42,545 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1018293478] [2020-10-28 19:09:42,545 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:09:42,545 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 19:09:42,545 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516249472] [2020-10-28 19:09:42,546 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 19:09:42,546 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:09:42,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 19:09:42,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 19:09:42,547 INFO L87 Difference]: Start difference. First operand 594 states and 902 transitions. Second operand 4 states. [2020-10-28 19:09:42,956 WARN L193 SmtUtils]: Spent 360.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-28 19:09:44,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:09:44,236 INFO L93 Difference]: Finished difference Result 1504 states and 2336 transitions. [2020-10-28 19:09:44,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 19:09:44,237 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 104 [2020-10-28 19:09:44,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:09:44,245 INFO L225 Difference]: With dead ends: 1504 [2020-10-28 19:09:44,245 INFO L226 Difference]: Without dead ends: 1056 [2020-10-28 19:09:44,252 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:09:44,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1056 states. [2020-10-28 19:09:44,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1056 to 1053. [2020-10-28 19:09:44,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1053 states. [2020-10-28 19:09:44,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1053 states to 1053 states and 1614 transitions. [2020-10-28 19:09:44,340 INFO L78 Accepts]: Start accepts. Automaton has 1053 states and 1614 transitions. Word has length 104 [2020-10-28 19:09:44,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:09:44,340 INFO L481 AbstractCegarLoop]: Abstraction has 1053 states and 1614 transitions. [2020-10-28 19:09:44,340 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 19:09:44,340 INFO L276 IsEmpty]: Start isEmpty. Operand 1053 states and 1614 transitions. [2020-10-28 19:09:44,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-28 19:09:44,342 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:09:44,342 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] [2020-10-28 19:09:44,343 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 19:09:44,343 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:09:44,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:09:44,343 INFO L82 PathProgramCache]: Analyzing trace with hash 1836390524, now seen corresponding path program 1 times [2020-10-28 19:09:44,343 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:09:44,344 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [614239167] [2020-10-28 19:09:44,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:09:44,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:09:44,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:09:44,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:09:44,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:09:45,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:09:46,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:09:49,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:09:49,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 19:09:49,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 19:09:49,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-28 19:09:49,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:09:49,398 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:09:49,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:09:49,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 75 [2020-10-28 19:09:49,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-28 19:09:49,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:09:49,782 WARN L193 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-28 19:09:49,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:09:49,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:09:49,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:09:49,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:09:49,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:09:49,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:09:49,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 19:09:49,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:09:49,812 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:09:49,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:09:49,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:09:49,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:09:49,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:09:49,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:09:49,844 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [614239167] [2020-10-28 19:09:49,845 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:09:49,845 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 19:09:49,845 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214359934] [2020-10-28 19:09:49,845 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 19:09:49,846 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:09:49,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 19:09:49,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 19:09:49,847 INFO L87 Difference]: Start difference. First operand 1053 states and 1614 transitions. Second operand 4 states. [2020-10-28 19:09:50,231 WARN L193 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-28 19:09:51,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:09:51,508 INFO L93 Difference]: Finished difference Result 2707 states and 4208 transitions. [2020-10-28 19:09:51,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 19:09:51,508 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 104 [2020-10-28 19:09:51,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:09:51,519 INFO L225 Difference]: With dead ends: 2707 [2020-10-28 19:09:51,519 INFO L226 Difference]: Without dead ends: 1894 [2020-10-28 19:09:51,522 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:09:51,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1894 states. [2020-10-28 19:09:51,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1894 to 1891. [2020-10-28 19:09:51,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1891 states. [2020-10-28 19:09:51,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1891 states to 1891 states and 2912 transitions. [2020-10-28 19:09:51,635 INFO L78 Accepts]: Start accepts. Automaton has 1891 states and 2912 transitions. Word has length 104 [2020-10-28 19:09:51,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:09:51,636 INFO L481 AbstractCegarLoop]: Abstraction has 1891 states and 2912 transitions. [2020-10-28 19:09:51,636 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 19:09:51,636 INFO L276 IsEmpty]: Start isEmpty. Operand 1891 states and 2912 transitions. [2020-10-28 19:09:51,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-28 19:09:51,639 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:09:51,640 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] [2020-10-28 19:09:51,640 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 19:09:51,641 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:09:51,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:09:51,641 INFO L82 PathProgramCache]: Analyzing trace with hash 1540939921, now seen corresponding path program 1 times [2020-10-28 19:09:51,642 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:09:51,642 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [939680471] [2020-10-28 19:09:51,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:09:51,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:09:51,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:09:51,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:09:51,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:09:52,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:09:54,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:09:56,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:09:56,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 19:09:56,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 19:09:56,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-28 19:09:56,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:09:56,687 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:09:56,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:09:56,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-28 19:09:56,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-28 19:09:56,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:09:57,098 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-28 19:09:57,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:09:57,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:09:57,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:09:57,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:09:57,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:09:57,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:09:57,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-28 19:09:57,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:09:57,141 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:09:57,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:09:57,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:09:57,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:09:57,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:09:57,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:09:57,175 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [939680471] [2020-10-28 19:09:57,177 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:09:57,177 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 19:09:57,177 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310699475] [2020-10-28 19:09:57,178 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 19:09:57,178 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:09:57,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 19:09:57,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 19:09:57,179 INFO L87 Difference]: Start difference. First operand 1891 states and 2912 transitions. Second operand 4 states. [2020-10-28 19:09:57,570 WARN L193 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-28 19:09:58,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:09:58,892 INFO L93 Difference]: Finished difference Result 5045 states and 7812 transitions. [2020-10-28 19:09:58,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 19:09:58,893 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 104 [2020-10-28 19:09:58,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:09:58,912 INFO L225 Difference]: With dead ends: 5045 [2020-10-28 19:09:58,912 INFO L226 Difference]: Without dead ends: 3486 [2020-10-28 19:09:58,917 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:09:58,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3486 states. [2020-10-28 19:09:59,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3486 to 3483. [2020-10-28 19:09:59,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3483 states. [2020-10-28 19:09:59,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3483 states to 3483 states and 5336 transitions. [2020-10-28 19:09:59,110 INFO L78 Accepts]: Start accepts. Automaton has 3483 states and 5336 transitions. Word has length 104 [2020-10-28 19:09:59,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:09:59,111 INFO L481 AbstractCegarLoop]: Abstraction has 3483 states and 5336 transitions. [2020-10-28 19:09:59,111 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 19:09:59,111 INFO L276 IsEmpty]: Start isEmpty. Operand 3483 states and 5336 transitions. [2020-10-28 19:09:59,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-28 19:09:59,114 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:09:59,114 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] [2020-10-28 19:09:59,114 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 19:09:59,114 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:09:59,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:09:59,115 INFO L82 PathProgramCache]: Analyzing trace with hash -1109070639, now seen corresponding path program 1 times [2020-10-28 19:09:59,115 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:09:59,116 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [119877536] [2020-10-28 19:09:59,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:09:59,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:09:59,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:09:59,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:09:59,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:09:59,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:10:01,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:10:04,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:10:04,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 19:10:04,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 19:10:04,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-28 19:10:04,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:10:04,161 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:10:04,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:10:04,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 63 [2020-10-28 19:10:04,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-28 19:10:04,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:10:04,580 WARN L193 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-28 19:10:04,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:10:04,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:10:04,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:10:04,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:10:04,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:10:04,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:10:04,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 19:10:04,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:10:04,610 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:10:04,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:10:04,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:10:04,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:10:04,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:10:04,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:10:04,638 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [119877536] [2020-10-28 19:10:04,639 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:10:04,639 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 19:10:04,639 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411987708] [2020-10-28 19:10:04,641 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 19:10:04,641 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:10:04,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 19:10:04,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 19:10:04,643 INFO L87 Difference]: Start difference. First operand 3483 states and 5336 transitions. Second operand 4 states. [2020-10-28 19:10:05,088 WARN L193 SmtUtils]: Spent 399.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-28 19:10:06,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:10:06,601 INFO L93 Difference]: Finished difference Result 9607 states and 14734 transitions. [2020-10-28 19:10:06,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 19:10:06,602 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 104 [2020-10-28 19:10:06,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:10:06,636 INFO L225 Difference]: With dead ends: 9607 [2020-10-28 19:10:06,637 INFO L226 Difference]: Without dead ends: 6508 [2020-10-28 19:10:06,647 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:10:06,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6508 states. [2020-10-28 19:10:06,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6508 to 6505. [2020-10-28 19:10:06,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6505 states. [2020-10-28 19:10:07,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6505 states to 6505 states and 9866 transitions. [2020-10-28 19:10:07,030 INFO L78 Accepts]: Start accepts. Automaton has 6505 states and 9866 transitions. Word has length 104 [2020-10-28 19:10:07,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:10:07,030 INFO L481 AbstractCegarLoop]: Abstraction has 6505 states and 9866 transitions. [2020-10-28 19:10:07,030 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 19:10:07,030 INFO L276 IsEmpty]: Start isEmpty. Operand 6505 states and 9866 transitions. [2020-10-28 19:10:07,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-28 19:10:07,036 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:10:07,036 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] [2020-10-28 19:10:07,036 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 19:10:07,036 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:10:07,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:10:07,037 INFO L82 PathProgramCache]: Analyzing trace with hash -216669425, now seen corresponding path program 1 times [2020-10-28 19:10:07,038 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:10:07,038 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1651910030] [2020-10-28 19:10:07,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:10:07,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:10:07,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:10:07,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:10:07,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:10:07,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:10:09,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:10:12,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:10:12,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 19:10:12,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 19:10:12,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-28 19:10:12,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:10:12,080 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:10:12,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:10:12,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-10-28 19:10:12,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-28 19:10:12,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:10:12,493 WARN L193 SmtUtils]: Spent 358.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-28 19:10:12,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:10:12,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:10:12,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:10:12,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:10:12,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:10:12,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:10:12,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 19:10:12,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:10:12,515 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:10:12,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:10:12,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:10:12,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:10:12,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:10:12,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:10:12,544 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1651910030] [2020-10-28 19:10:12,544 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:10:12,544 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 19:10:12,544 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781347280] [2020-10-28 19:10:12,545 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 19:10:12,545 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:10:12,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 19:10:12,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 19:10:12,546 INFO L87 Difference]: Start difference. First operand 6505 states and 9866 transitions. Second operand 4 states. [2020-10-28 19:10:12,967 WARN L193 SmtUtils]: Spent 374.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-28 19:10:14,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:10:14,723 INFO L93 Difference]: Finished difference Result 18181 states and 27552 transitions. [2020-10-28 19:10:14,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 19:10:14,724 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 104 [2020-10-28 19:10:14,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:10:14,789 INFO L225 Difference]: With dead ends: 18181 [2020-10-28 19:10:14,790 INFO L226 Difference]: Without dead ends: 12178 [2020-10-28 19:10:14,806 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:10:14,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12178 states. [2020-10-28 19:10:15,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12178 to 12175. [2020-10-28 19:10:15,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12175 states. [2020-10-28 19:10:15,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12175 states to 12175 states and 18220 transitions. [2020-10-28 19:10:15,544 INFO L78 Accepts]: Start accepts. Automaton has 12175 states and 18220 transitions. Word has length 104 [2020-10-28 19:10:15,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:10:15,545 INFO L481 AbstractCegarLoop]: Abstraction has 12175 states and 18220 transitions. [2020-10-28 19:10:15,545 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 19:10:15,545 INFO L276 IsEmpty]: Start isEmpty. Operand 12175 states and 18220 transitions. [2020-10-28 19:10:15,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-28 19:10:15,554 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:10:15,554 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] [2020-10-28 19:10:15,554 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 19:10:15,554 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:10:15,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:10:15,555 INFO L82 PathProgramCache]: Analyzing trace with hash 1762986257, now seen corresponding path program 1 times [2020-10-28 19:10:15,555 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:10:15,555 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1504850260] [2020-10-28 19:10:15,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:10:15,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:10:15,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:10:15,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:10:15,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:10:16,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:10:17,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:10:20,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:10:20,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 19:10:20,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 19:10:20,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-28 19:10:20,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:10:20,602 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:10:20,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:10:20,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-10-28 19:10:20,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-28 19:10:20,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:10:21,093 WARN L193 SmtUtils]: Spent 455.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-28 19:10:21,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:10:21,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:10:21,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:10:21,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:10:21,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:10:21,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:10:21,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 19:10:21,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:10:21,114 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:10:21,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:10:21,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:10:21,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:10:21,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:10:21,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:10:21,144 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1504850260] [2020-10-28 19:10:21,144 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:10:21,144 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 19:10:21,144 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771685954] [2020-10-28 19:10:21,145 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 19:10:21,145 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:10:21,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 19:10:21,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 19:10:21,146 INFO L87 Difference]: Start difference. First operand 12175 states and 18220 transitions. Second operand 4 states. [2020-10-28 19:10:21,614 WARN L193 SmtUtils]: Spent 428.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-28 19:10:23,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:10:23,621 INFO L93 Difference]: Finished difference Result 34845 states and 52190 transitions. [2020-10-28 19:10:23,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 19:10:23,622 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 104 [2020-10-28 19:10:23,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:10:23,689 INFO L225 Difference]: With dead ends: 34845 [2020-10-28 19:10:23,690 INFO L226 Difference]: Without dead ends: 23290 [2020-10-28 19:10:23,722 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:10:23,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23290 states. [2020-10-28 19:10:24,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23290 to 23287. [2020-10-28 19:10:24,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23287 states. [2020-10-28 19:10:24,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23287 states to 23287 states and 34554 transitions. [2020-10-28 19:10:24,958 INFO L78 Accepts]: Start accepts. Automaton has 23287 states and 34554 transitions. Word has length 104 [2020-10-28 19:10:24,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:10:24,958 INFO L481 AbstractCegarLoop]: Abstraction has 23287 states and 34554 transitions. [2020-10-28 19:10:24,958 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 19:10:24,958 INFO L276 IsEmpty]: Start isEmpty. Operand 23287 states and 34554 transitions. [2020-10-28 19:10:24,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-28 19:10:24,977 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:10:24,978 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] [2020-10-28 19:10:24,978 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 19:10:24,978 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:10:24,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:10:24,979 INFO L82 PathProgramCache]: Analyzing trace with hash -1661264902, now seen corresponding path program 1 times [2020-10-28 19:10:24,979 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:10:24,979 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [998355544] [2020-10-28 19:10:24,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:10:25,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:10:25,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:10:25,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:10:25,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:10:25,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:10:26,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:10:29,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:10:29,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-28 19:10:29,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 19:10:29,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4453 [2020-10-28 19:10:29,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:10:29,472 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:10:29,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 19:10:29,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 19:10:29,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-28 19:10:29,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:10:30,023 WARN L193 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-28 19:10:30,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:10:30,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:10:30,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:10:30,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:10:30,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:10:30,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:10:30,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 19:10:30,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:10:30,064 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:10:30,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:10:30,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:10:30,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 19:10:30,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:10:30,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:10:30,107 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [998355544] [2020-10-28 19:10:30,107 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:10:30,107 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-28 19:10:30,108 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146657200] [2020-10-28 19:10:30,108 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 19:10:30,108 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:10:30,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 19:10:30,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-28 19:10:30,109 INFO L87 Difference]: Start difference. First operand 23287 states and 34554 transitions. Second operand 8 states. [2020-10-28 19:10:30,542 WARN L193 SmtUtils]: Spent 380.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-28 19:10:32,362 WARN L193 SmtUtils]: Spent 409.00 ms on a formula simplification that was a NOOP. DAG size: 216 [2020-10-28 19:10:35,257 WARN L193 SmtUtils]: Spent 562.00 ms on a formula simplification that was a NOOP. DAG size: 214 [2020-10-28 19:10:37,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:10:37,444 INFO L93 Difference]: Finished difference Result 118261 states and 176468 transitions. [2020-10-28 19:10:37,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-28 19:10:37,445 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 105 [2020-10-28 19:10:37,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:10:37,735 INFO L225 Difference]: With dead ends: 118261 [2020-10-28 19:10:37,735 INFO L226 Difference]: Without dead ends: 97664 [2020-10-28 19:10:37,802 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2020-10-28 19:10:37,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97664 states. [2020-10-28 19:10:40,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97664 to 23383. [2020-10-28 19:10:40,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23383 states. [2020-10-28 19:10:40,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23383 states to 23383 states and 34522 transitions. [2020-10-28 19:10:40,164 INFO L78 Accepts]: Start accepts. Automaton has 23383 states and 34522 transitions. Word has length 105 [2020-10-28 19:10:40,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:10:40,164 INFO L481 AbstractCegarLoop]: Abstraction has 23383 states and 34522 transitions. [2020-10-28 19:10:40,164 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 19:10:40,164 INFO L276 IsEmpty]: Start isEmpty. Operand 23383 states and 34522 transitions. [2020-10-28 19:10:40,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-28 19:10:40,181 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:10:40,182 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] [2020-10-28 19:10:40,182 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 19:10:40,182 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:10:40,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:10:40,183 INFO L82 PathProgramCache]: Analyzing trace with hash -1002822997, now seen corresponding path program 1 times [2020-10-28 19:10:40,183 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:10:40,183 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [962315901] [2020-10-28 19:10:40,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:10:40,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:10:40,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:10:40,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:10:40,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:10:41,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:10:41,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:10:44,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:10:44,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-28 19:10:44,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 19:10:44,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3921 [2020-10-28 19:10:44,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:10:44,140 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:10:44,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 19:10:44,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 19:10:44,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-28 19:10:44,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:10:44,689 WARN L193 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-28 19:10:44,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:10:44,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:10:44,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:10:44,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:10:44,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:10:44,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:10:44,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-28 19:10:44,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:10:44,725 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:10:44,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:10:44,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:10:44,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 19:10:44,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:10:44,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:10:44,777 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [962315901] [2020-10-28 19:10:44,777 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:10:44,777 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-28 19:10:44,777 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240872773] [2020-10-28 19:10:44,777 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 19:10:44,777 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:10:44,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 19:10:44,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-28 19:10:44,778 INFO L87 Difference]: Start difference. First operand 23383 states and 34522 transitions. Second operand 8 states. [2020-10-28 19:10:45,215 WARN L193 SmtUtils]: Spent 383.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-28 19:10:47,079 WARN L193 SmtUtils]: Spent 393.00 ms on a formula simplification that was a NOOP. DAG size: 216 [2020-10-28 19:10:50,445 WARN L193 SmtUtils]: Spent 488.00 ms on a formula simplification that was a NOOP. DAG size: 214 [2020-10-28 19:10:52,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:10:52,925 INFO L93 Difference]: Finished difference Result 105657 states and 155042 transitions. [2020-10-28 19:10:52,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-28 19:10:52,926 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 105 [2020-10-28 19:10:52,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:10:53,126 INFO L225 Difference]: With dead ends: 105657 [2020-10-28 19:10:53,135 INFO L226 Difference]: Without dead ends: 86006 [2020-10-28 19:10:53,203 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2020-10-28 19:10:53,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86006 states. [2020-10-28 19:10:57,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86006 to 46961. [2020-10-28 19:10:57,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46961 states. [2020-10-28 19:10:57,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46961 states to 46961 states and 68316 transitions. [2020-10-28 19:10:57,189 INFO L78 Accepts]: Start accepts. Automaton has 46961 states and 68316 transitions. Word has length 105 [2020-10-28 19:10:57,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:10:57,189 INFO L481 AbstractCegarLoop]: Abstraction has 46961 states and 68316 transitions. [2020-10-28 19:10:57,189 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 19:10:57,189 INFO L276 IsEmpty]: Start isEmpty. Operand 46961 states and 68316 transitions. [2020-10-28 19:10:57,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-28 19:10:57,209 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:10:57,210 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] [2020-10-28 19:10:57,210 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 19:10:57,210 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:10:57,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:10:57,210 INFO L82 PathProgramCache]: Analyzing trace with hash -2064386961, now seen corresponding path program 1 times [2020-10-28 19:10:57,211 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:10:57,211 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1600600721] [2020-10-28 19:10:57,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:10:57,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:10:57,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:10:57,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:10:57,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:10:57,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:10:58,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:00,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:11:00,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-28 19:11:00,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 19:11:00,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2786 [2020-10-28 19:11:00,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:11:00,031 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:11:00,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 19:11:00,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 19:11:00,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-28 19:11:00,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:11:00,483 WARN L193 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-28 19:11:00,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:11:00,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:11:00,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:00,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:11:00,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:11:00,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:11:00,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 19:11:00,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:11:00,515 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:11:00,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:11:00,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:11:00,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 19:11:00,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:11:00,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:11:00,540 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1600600721] [2020-10-28 19:11:00,540 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:11:00,540 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-28 19:11:00,541 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633929860] [2020-10-28 19:11:00,541 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 19:11:00,541 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:11:00,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 19:11:00,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-28 19:11:00,542 INFO L87 Difference]: Start difference. First operand 46961 states and 68316 transitions. Second operand 8 states. [2020-10-28 19:11:01,040 WARN L193 SmtUtils]: Spent 434.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-28 19:11:03,241 WARN L193 SmtUtils]: Spent 420.00 ms on a formula simplification that was a NOOP. DAG size: 214 [2020-10-28 19:11:08,935 WARN L193 SmtUtils]: Spent 386.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-28 19:11:20,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:11:20,892 INFO L93 Difference]: Finished difference Result 242915 states and 349656 transitions. [2020-10-28 19:11:20,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-28 19:11:20,892 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 105 [2020-10-28 19:11:20,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:11:21,552 INFO L225 Difference]: With dead ends: 242915 [2020-10-28 19:11:21,553 INFO L226 Difference]: Without dead ends: 222208 [2020-10-28 19:11:21,625 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2020-10-28 19:11:21,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222208 states. [2020-10-28 19:11:27,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222208 to 47817. [2020-10-28 19:11:27,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47817 states. [2020-10-28 19:11:27,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47817 states to 47817 states and 69480 transitions. [2020-10-28 19:11:27,429 INFO L78 Accepts]: Start accepts. Automaton has 47817 states and 69480 transitions. Word has length 105 [2020-10-28 19:11:27,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:11:27,429 INFO L481 AbstractCegarLoop]: Abstraction has 47817 states and 69480 transitions. [2020-10-28 19:11:27,429 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 19:11:27,429 INFO L276 IsEmpty]: Start isEmpty. Operand 47817 states and 69480 transitions. [2020-10-28 19:11:27,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-28 19:11:27,448 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:11:27,448 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] [2020-10-28 19:11:27,448 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 19:11:27,448 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:11:27,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:11:27,449 INFO L82 PathProgramCache]: Analyzing trace with hash -407519012, now seen corresponding path program 1 times [2020-10-28 19:11:27,449 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:11:27,449 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1257275939] [2020-10-28 19:11:27,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:11:27,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:11:27,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:27,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:27,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:27,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:28,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:30,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:11:30,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-28 19:11:30,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 19:11:30,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3491 [2020-10-28 19:11:30,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:11:30,978 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:11:30,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 19:11:30,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 19:11:30,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-28 19:11:30,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:11:31,513 WARN L193 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-28 19:11:31,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:11:31,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:11:31,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:31,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:11:31,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:11:31,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:11:31,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-28 19:11:31,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:11:31,558 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:11:31,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:11:31,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:11:31,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 19:11:31,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:11:31,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:11:31,707 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1257275939] [2020-10-28 19:11:31,708 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:11:31,708 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-28 19:11:31,708 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429245641] [2020-10-28 19:11:31,708 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 19:11:31,708 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:11:31,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 19:11:31,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-28 19:11:31,709 INFO L87 Difference]: Start difference. First operand 47817 states and 69480 transitions. Second operand 8 states. [2020-10-28 19:11:32,112 WARN L193 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-28 19:11:34,382 WARN L193 SmtUtils]: Spent 406.00 ms on a formula simplification that was a NOOP. DAG size: 216 [2020-10-28 19:11:41,828 WARN L193 SmtUtils]: Spent 394.00 ms on a formula simplification that was a NOOP. DAG size: 214 [2020-10-28 19:12:00,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:12:00,624 INFO L93 Difference]: Finished difference Result 301269 states and 436014 transitions. [2020-10-28 19:12:00,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-28 19:12:00,625 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 105 [2020-10-28 19:12:00,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:12:01,135 INFO L225 Difference]: With dead ends: 301269 [2020-10-28 19:12:01,135 INFO L226 Difference]: Without dead ends: 258888 [2020-10-28 19:12:01,226 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2020-10-28 19:12:01,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258888 states. [2020-10-28 19:12:07,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258888 to 49935. [2020-10-28 19:12:07,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49935 states. [2020-10-28 19:12:08,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49935 states to 49935 states and 71702 transitions. [2020-10-28 19:12:08,042 INFO L78 Accepts]: Start accepts. Automaton has 49935 states and 71702 transitions. Word has length 105 [2020-10-28 19:12:08,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:12:08,042 INFO L481 AbstractCegarLoop]: Abstraction has 49935 states and 71702 transitions. [2020-10-28 19:12:08,043 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 19:12:08,043 INFO L276 IsEmpty]: Start isEmpty. Operand 49935 states and 71702 transitions. [2020-10-28 19:12:08,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-28 19:12:08,061 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:12:08,061 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] [2020-10-28 19:12:08,062 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 19:12:08,062 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:12:08,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:12:08,063 INFO L82 PathProgramCache]: Analyzing trace with hash -1830823923, now seen corresponding path program 1 times [2020-10-28 19:12:08,063 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:12:08,063 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [687972127] [2020-10-28 19:12:08,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:12:08,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:12:08,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:08,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:08,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:08,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:08,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:11,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:12:11,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-28 19:12:11,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 19:12:11,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2969 [2020-10-28 19:12:11,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:12:11,073 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:12:11,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 19:12:11,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 19:12:11,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-28 19:12:11,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:12:11,618 WARN L193 SmtUtils]: Spent 358.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-28 19:12:11,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:12:11,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:12:11,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:11,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:12:11,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:12:11,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:12:11,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 19:12:11,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:12:11,645 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:12:11,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:12:11,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:12:11,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 19:12:11,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:12:11,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:12:11,687 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [687972127] [2020-10-28 19:12:11,687 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:12:11,687 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-28 19:12:11,687 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985052781] [2020-10-28 19:12:11,687 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 19:12:11,688 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:12:11,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 19:12:11,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-28 19:12:11,688 INFO L87 Difference]: Start difference. First operand 49935 states and 71702 transitions. Second operand 8 states. [2020-10-28 19:12:12,118 WARN L193 SmtUtils]: Spent 378.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-28 19:12:14,798 WARN L193 SmtUtils]: Spent 400.00 ms on a formula simplification that was a NOOP. DAG size: 216 [2020-10-28 19:12:24,352 WARN L193 SmtUtils]: Spent 385.00 ms on a formula simplification that was a NOOP. DAG size: 214 [2020-10-28 19:12:49,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:12:49,649 INFO L93 Difference]: Finished difference Result 331153 states and 475894 transitions. [2020-10-28 19:12:49,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-28 19:12:49,649 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 105 [2020-10-28 19:12:49,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:12:50,383 INFO L225 Difference]: With dead ends: 331153 [2020-10-28 19:12:50,383 INFO L226 Difference]: Without dead ends: 288142 [2020-10-28 19:12:50,473 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2020-10-28 19:12:50,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288142 states.