/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 14:03:12,746 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 14:03:12,749 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 14:03:12,784 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 14:03:12,784 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 14:03:12,786 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 14:03:12,787 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 14:03:12,790 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 14:03:12,792 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 14:03:12,793 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 14:03:12,794 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 14:03:12,797 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 14:03:12,797 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 14:03:12,801 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 14:03:12,802 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 14:03:12,805 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 14:03:12,806 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 14:03:12,808 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 14:03:12,813 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 14:03:12,821 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 14:03:12,826 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 14:03:12,829 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 14:03:12,832 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 14:03:12,833 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 14:03:12,839 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 14:03:12,840 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 14:03:12,842 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 14:03:12,843 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 14:03:12,844 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 14:03:12,848 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 14:03:12,848 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 14:03:12,849 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 14:03:12,853 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 14:03:12,854 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 14:03:12,856 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 14:03:12,857 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 14:03:12,858 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 14:03:12,858 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 14:03:12,858 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 14:03:12,860 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 14:03:12,861 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 14:03:12,861 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 14:03:12,911 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 14:03:12,911 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 14:03:12,916 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 14:03:12,916 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 14:03:12,916 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 14:03:12,917 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 14:03:12,917 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 14:03:12,917 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 14:03:12,918 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 14:03:12,918 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 14:03:12,919 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 14:03:12,919 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 14:03:12,920 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 14:03:12,920 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 14:03:12,920 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 14:03:12,920 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 14:03:12,920 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 14:03:12,921 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 14:03:12,921 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 14:03:12,921 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 14:03:12,921 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 14:03:12,921 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 14:03:12,922 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 14:03:12,922 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 14:03:12,922 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 14:03:12,922 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 14:03:12,923 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 14:03:12,923 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 14:03:12,923 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 14:03:12,923 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 14:03:13,348 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 14:03:13,383 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 14:03:13,387 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 14:03:13,388 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 14:03:13,389 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 14:03:13,391 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-29 14:03:13,484 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/30e9bf529/65c9907c27bf4e22b6d7267a4eb4e80b/FLAG97c0f834a [2020-10-29 14:03:14,296 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 14:03:14,297 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-29 14:03:14,313 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/30e9bf529/65c9907c27bf4e22b6d7267a4eb4e80b/FLAG97c0f834a [2020-10-29 14:03:14,496 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/30e9bf529/65c9907c27bf4e22b6d7267a4eb4e80b [2020-10-29 14:03:14,499 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 14:03:14,510 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 14:03:14,514 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 14:03:14,514 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 14:03:14,518 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 14:03:14,519 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 02:03:14" (1/1) ... [2020-10-29 14:03:14,524 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b79d1d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:03:14, skipping insertion in model container [2020-10-29 14:03:14,524 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 02:03:14" (1/1) ... [2020-10-29 14:03:14,533 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 14:03:14,615 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 14:03:15,079 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 14:03:15,097 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 14:03:15,314 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 14:03:15,377 INFO L208 MainTranslator]: Completed translation [2020-10-29 14:03:15,377 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:03:15 WrapperNode [2020-10-29 14:03:15,378 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 14:03:15,379 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 14:03:15,379 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 14:03:15,379 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 14:03:15,394 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:03:15" (1/1) ... [2020-10-29 14:03:15,394 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:03:15" (1/1) ... [2020-10-29 14:03:15,413 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:03:15" (1/1) ... [2020-10-29 14:03:15,413 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:03:15" (1/1) ... [2020-10-29 14:03:15,445 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:03:15" (1/1) ... [2020-10-29 14:03:15,467 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:03:15" (1/1) ... [2020-10-29 14:03:15,472 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:03:15" (1/1) ... [2020-10-29 14:03:15,481 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 14:03:15,484 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 14:03:15,484 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 14:03:15,484 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 14:03:15,485 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:03:15" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 14:03:15,582 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 14:03:15,582 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 14:03:15,583 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 14:03:15,583 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-29 14:03:15,584 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 14:03:15,585 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 14:03:15,585 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 14:03:15,585 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 14:03:15,585 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 14:03:15,585 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-29 14:03:15,586 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-29 14:03:15,587 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-29 14:03:15,587 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-29 14:03:15,587 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-29 14:03:15,587 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-29 14:03:15,588 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-29 14:03:15,588 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-29 14:03:15,589 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-29 14:03:15,589 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-29 14:03:15,589 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-29 14:03:15,589 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-29 14:03:15,589 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-29 14:03:15,589 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 14:03:15,589 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 14:03:15,590 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 14:03:15,590 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 14:03:15,590 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 14:03:15,590 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 14:03:15,590 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 14:03:17,304 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 14:03:17,307 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-29 14:03:17,310 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 02:03:17 BoogieIcfgContainer [2020-10-29 14:03:17,310 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 14:03:17,316 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 14:03:17,316 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 14:03:17,320 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 14:03:17,321 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 02:03:14" (1/3) ... [2020-10-29 14:03:17,322 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b26731d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 02:03:17, skipping insertion in model container [2020-10-29 14:03:17,322 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:03:15" (2/3) ... [2020-10-29 14:03:17,323 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b26731d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 02:03:17, skipping insertion in model container [2020-10-29 14:03:17,323 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 02:03:17" (3/3) ... [2020-10-29 14:03:17,325 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-29 14:03:17,341 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 14:03:17,348 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 14:03:17,363 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 14:03:17,411 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 14:03:17,411 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 14:03:17,411 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 14:03:17,411 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 14:03:17,412 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 14:03:17,412 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 14:03:17,412 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 14:03:17,412 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 14:03:17,452 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states. [2020-10-29 14:03:17,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-29 14:03:17,487 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:03:17,488 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:03:17,489 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:03:17,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:03:17,499 INFO L82 PathProgramCache]: Analyzing trace with hash 1705296254, now seen corresponding path program 1 times [2020-10-29 14:03:17,511 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:03:17,511 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [275596281] [2020-10-29 14:03:17,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:03:17,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:03:18,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:18,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:18,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:19,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:19,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:23,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:03:23,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-29 14:03:23,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 14:03:23,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5071 [2020-10-29 14:03:23,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:03:23,064 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:03:23,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:03:23,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-29 14:03:23,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-29 14:03:23,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 14:03:24,079 WARN L193 SmtUtils]: Spent 789.00 ms on a formula simplification that was a NOOP. DAG size: 289 [2020-10-29 14:03:24,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:03:24,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:03:24,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:24,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:03:24,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:03:24,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:03:24,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-29 14:03:24,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:03:24,136 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:03:24,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:03:24,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:03:24,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:03:24,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 14:03:24,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:03:24,216 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [275596281] [2020-10-29 14:03:24,219 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:03:24,220 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 14:03:24,221 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487774058] [2020-10-29 14:03:24,228 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 14:03:24,229 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:03:24,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 14:03:24,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 14:03:24,253 INFO L87 Difference]: Start difference. First operand 347 states. Second operand 4 states. [2020-10-29 14:03:25,049 WARN L193 SmtUtils]: Spent 684.00 ms on a formula simplification that was a NOOP. DAG size: 293 [2020-10-29 14:03:27,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:03:27,644 INFO L93 Difference]: Finished difference Result 655 states and 1119 transitions. [2020-10-29 14:03:27,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 14:03:27,651 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 111 [2020-10-29 14:03:27,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:03:27,686 INFO L225 Difference]: With dead ends: 655 [2020-10-29 14:03:27,686 INFO L226 Difference]: Without dead ends: 485 [2020-10-29 14:03:27,696 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:03:27,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 485 states. [2020-10-29 14:03:27,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 485 to 481. [2020-10-29 14:03:27,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 481 states. [2020-10-29 14:03:27,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 481 states to 481 states and 802 transitions. [2020-10-29 14:03:27,840 INFO L78 Accepts]: Start accepts. Automaton has 481 states and 802 transitions. Word has length 111 [2020-10-29 14:03:27,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:03:27,841 INFO L481 AbstractCegarLoop]: Abstraction has 481 states and 802 transitions. [2020-10-29 14:03:27,841 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 14:03:27,841 INFO L276 IsEmpty]: Start isEmpty. Operand 481 states and 802 transitions. [2020-10-29 14:03:27,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-29 14:03:27,844 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:03:27,844 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:03:27,845 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 14:03:27,845 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:03:27,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:03:27,846 INFO L82 PathProgramCache]: Analyzing trace with hash 1930178272, now seen corresponding path program 1 times [2020-10-29 14:03:27,846 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:03:27,846 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1331404407] [2020-10-29 14:03:27,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:03:27,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:03:28,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:28,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:28,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:28,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:28,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:32,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:32,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:32,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:03:32,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-29 14:03:32,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 14:03:32,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-29 14:03:32,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:03:32,920 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:03:32,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:03:32,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:03:32,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-29 14:03:32,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:03:33,691 WARN L193 SmtUtils]: Spent 614.00 ms on a formula simplification that was a NOOP. DAG size: 289 [2020-10-29 14:03:33,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:03:33,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:03:33,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:33,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:03:33,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:03:33,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:03:33,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 14:03:33,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:03:33,725 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:03:33,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:03:33,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:03:33,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:03:33,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 14:03:33,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:03:33,804 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1331404407] [2020-10-29 14:03:33,805 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:03:33,805 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:03:33,805 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980167664] [2020-10-29 14:03:33,807 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:03:33,807 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:03:33,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:03:33,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:03:33,808 INFO L87 Difference]: Start difference. First operand 481 states and 802 transitions. Second operand 5 states. [2020-10-29 14:03:36,926 WARN L193 SmtUtils]: Spent 681.00 ms on a formula simplification that was a NOOP. DAG size: 295 [2020-10-29 14:03:37,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:03:37,074 INFO L93 Difference]: Finished difference Result 1353 states and 2251 transitions. [2020-10-29 14:03:37,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 14:03:37,081 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 114 [2020-10-29 14:03:37,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:03:37,089 INFO L225 Difference]: With dead ends: 1353 [2020-10-29 14:03:37,090 INFO L226 Difference]: Without dead ends: 915 [2020-10-29 14:03:37,094 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 14:03:37,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 915 states. [2020-10-29 14:03:37,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 915 to 912. [2020-10-29 14:03:37,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 912 states. [2020-10-29 14:03:37,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 912 states to 912 states and 1511 transitions. [2020-10-29 14:03:37,163 INFO L78 Accepts]: Start accepts. Automaton has 912 states and 1511 transitions. Word has length 114 [2020-10-29 14:03:37,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:03:37,164 INFO L481 AbstractCegarLoop]: Abstraction has 912 states and 1511 transitions. [2020-10-29 14:03:37,164 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:03:37,164 INFO L276 IsEmpty]: Start isEmpty. Operand 912 states and 1511 transitions. [2020-10-29 14:03:37,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-29 14:03:37,167 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:03:37,167 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:03:37,167 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 14:03:37,168 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:03:37,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:03:37,168 INFO L82 PathProgramCache]: Analyzing trace with hash 368215247, now seen corresponding path program 1 times [2020-10-29 14:03:37,169 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:03:37,169 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [737263872] [2020-10-29 14:03:37,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:03:37,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:03:37,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:37,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:37,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:37,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:38,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:40,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:40,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:42,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:03:42,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-29 14:03:42,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 14:03:42,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-29 14:03:42,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:03:42,241 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:03:42,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:03:42,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:03:42,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-29 14:03:42,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 14:03:43,105 WARN L193 SmtUtils]: Spent 708.00 ms on a formula simplification that was a NOOP. DAG size: 289 [2020-10-29 14:03:43,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:03:43,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:03:43,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:43,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:03:43,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:03:43,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:03:43,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-29 14:03:43,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:03:43,144 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:03:43,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:03:43,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:03:43,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:03:43,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:03:43,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:03:43,202 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [737263872] [2020-10-29 14:03:43,203 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:03:43,203 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:03:43,203 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476138869] [2020-10-29 14:03:43,205 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:03:43,206 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:03:43,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:03:43,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:03:43,207 INFO L87 Difference]: Start difference. First operand 912 states and 1511 transitions. Second operand 5 states. [2020-10-29 14:03:46,532 WARN L193 SmtUtils]: Spent 642.00 ms on a formula simplification that was a NOOP. DAG size: 295 [2020-10-29 14:03:46,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:03:46,710 INFO L93 Difference]: Finished difference Result 2626 states and 4343 transitions. [2020-10-29 14:03:46,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 14:03:46,711 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 115 [2020-10-29 14:03:46,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:03:46,723 INFO L225 Difference]: With dead ends: 2626 [2020-10-29 14:03:46,723 INFO L226 Difference]: Without dead ends: 1767 [2020-10-29 14:03:46,727 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 14:03:46,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1767 states. [2020-10-29 14:03:46,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1767 to 1764. [2020-10-29 14:03:46,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1764 states. [2020-10-29 14:03:46,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1764 states to 1764 states and 2904 transitions. [2020-10-29 14:03:46,840 INFO L78 Accepts]: Start accepts. Automaton has 1764 states and 2904 transitions. Word has length 115 [2020-10-29 14:03:46,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:03:46,841 INFO L481 AbstractCegarLoop]: Abstraction has 1764 states and 2904 transitions. [2020-10-29 14:03:46,841 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:03:46,841 INFO L276 IsEmpty]: Start isEmpty. Operand 1764 states and 2904 transitions. [2020-10-29 14:03:46,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-29 14:03:46,845 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:03:46,846 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:03:46,846 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 14:03:46,846 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:03:46,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:03:46,847 INFO L82 PathProgramCache]: Analyzing trace with hash -1842165006, now seen corresponding path program 1 times [2020-10-29 14:03:46,847 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:03:46,847 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [831968452] [2020-10-29 14:03:46,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:03:46,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:03:46,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:47,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:47,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:47,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:47,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:49,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:49,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:51,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:03:51,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-29 14:03:51,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 14:03:51,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5049 [2020-10-29 14:03:51,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:03:51,984 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:03:51,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:03:51,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:03:51,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-29 14:03:51,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:03:52,879 WARN L193 SmtUtils]: Spent 689.00 ms on a formula simplification that was a NOOP. DAG size: 289 [2020-10-29 14:03:52,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:03:52,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:03:52,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:52,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:03:52,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:03:52,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:03:52,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 14:03:52,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:03:52,954 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:03:52,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:03:52,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:03:52,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:03:52,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 14:03:53,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:03:53,048 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [831968452] [2020-10-29 14:03:53,048 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:03:53,048 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:03:53,048 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331320705] [2020-10-29 14:03:53,049 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:03:53,049 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:03:53,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:03:53,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:03:53,050 INFO L87 Difference]: Start difference. First operand 1764 states and 2904 transitions. Second operand 5 states. [2020-10-29 14:03:56,870 WARN L193 SmtUtils]: Spent 714.00 ms on a formula simplification that was a NOOP. DAG size: 295 [2020-10-29 14:03:57,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:03:57,075 INFO L93 Difference]: Finished difference Result 5048 states and 8298 transitions. [2020-10-29 14:03:57,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 14:03:57,076 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 116 [2020-10-29 14:03:57,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:03:57,098 INFO L225 Difference]: With dead ends: 5048 [2020-10-29 14:03:57,098 INFO L226 Difference]: Without dead ends: 3465 [2020-10-29 14:03:57,103 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 14:03:57,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3465 states. [2020-10-29 14:03:57,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3465 to 3462. [2020-10-29 14:03:57,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3462 states. [2020-10-29 14:03:57,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3462 states to 3462 states and 5674 transitions. [2020-10-29 14:03:57,352 INFO L78 Accepts]: Start accepts. Automaton has 3462 states and 5674 transitions. Word has length 116 [2020-10-29 14:03:57,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:03:57,353 INFO L481 AbstractCegarLoop]: Abstraction has 3462 states and 5674 transitions. [2020-10-29 14:03:57,353 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:03:57,353 INFO L276 IsEmpty]: Start isEmpty. Operand 3462 states and 5674 transitions. [2020-10-29 14:03:57,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-29 14:03:57,360 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:03:57,360 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:03:57,360 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 14:03:57,361 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:03:57,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:03:57,361 INFO L82 PathProgramCache]: Analyzing trace with hash -1077123277, now seen corresponding path program 1 times [2020-10-29 14:03:57,362 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:03:57,362 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1777872484] [2020-10-29 14:03:57,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:03:57,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:03:57,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:57,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:57,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:57,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:58,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:58,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:02,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:04:02,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-29 14:04:02,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 14:04:02,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-29 14:04:02,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:04:02,428 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:04:02,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:04:02,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:04:02,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-29 14:04:02,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:04:03,160 WARN L193 SmtUtils]: Spent 613.00 ms on a formula simplification that was a NOOP. DAG size: 289 [2020-10-29 14:04:03,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:04:03,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:04:03,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:03,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:04:03,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:04:03,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:04:03,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-29 14:04:03,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:04:03,199 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:04:03,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:04:03,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:04:03,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:04:03,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:04:03,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:04:03,312 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1777872484] [2020-10-29 14:04:03,312 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:04:03,313 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:04:03,313 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412747889] [2020-10-29 14:04:03,314 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:04:03,314 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:04:03,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:04:03,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:04:03,315 INFO L87 Difference]: Start difference. First operand 3462 states and 5674 transitions. Second operand 5 states. [2020-10-29 14:04:06,600 WARN L193 SmtUtils]: Spent 644.00 ms on a formula simplification that was a NOOP. DAG size: 295 [2020-10-29 14:04:06,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:04:06,846 INFO L93 Difference]: Finished difference Result 10120 states and 16568 transitions. [2020-10-29 14:04:06,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 14:04:06,847 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 117 [2020-10-29 14:04:06,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:04:06,882 INFO L225 Difference]: With dead ends: 10120 [2020-10-29 14:04:06,882 INFO L226 Difference]: Without dead ends: 6717 [2020-10-29 14:04:06,890 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 14:04:06,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6717 states. [2020-10-29 14:04:07,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6717 to 6714. [2020-10-29 14:04:07,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6714 states. [2020-10-29 14:04:07,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6714 states to 6714 states and 10924 transitions. [2020-10-29 14:04:07,362 INFO L78 Accepts]: Start accepts. Automaton has 6714 states and 10924 transitions. Word has length 117 [2020-10-29 14:04:07,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:04:07,363 INFO L481 AbstractCegarLoop]: Abstraction has 6714 states and 10924 transitions. [2020-10-29 14:04:07,363 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:04:07,366 INFO L276 IsEmpty]: Start isEmpty. Operand 6714 states and 10924 transitions. [2020-10-29 14:04:07,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-29 14:04:07,382 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:04:07,382 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:04:07,382 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 14:04:07,382 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:04:07,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:04:07,383 INFO L82 PathProgramCache]: Analyzing trace with hash -71773118, now seen corresponding path program 1 times [2020-10-29 14:04:07,383 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:04:07,384 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [155646029] [2020-10-29 14:04:07,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:04:07,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:04:07,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:07,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:07,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:07,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:07,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:08,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:08,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:12,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:04:12,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-29 14:04:12,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 14:04:12,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-29 14:04:12,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:04:12,454 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:04:12,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:04:12,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-29 14:04:12,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-29 14:04:12,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:04:13,241 WARN L193 SmtUtils]: Spent 721.00 ms on a formula simplification that was a NOOP. DAG size: 289 [2020-10-29 14:04:13,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:04:13,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:04:13,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:13,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:04:13,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:04:13,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:04:13,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-29 14:04:13,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:04:13,277 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:04:13,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:04:13,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:04:13,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:04:13,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:04:13,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:04:13,328 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [155646029] [2020-10-29 14:04:13,329 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:04:13,329 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 14:04:13,329 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850572286] [2020-10-29 14:04:13,329 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 14:04:13,330 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:04:13,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 14:04:13,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 14:04:13,331 INFO L87 Difference]: Start difference. First operand 6714 states and 10924 transitions. Second operand 4 states. [2020-10-29 14:04:14,054 WARN L193 SmtUtils]: Spent 669.00 ms on a formula simplification that was a NOOP. DAG size: 293 [2020-10-29 14:04:16,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:04:16,681 INFO L93 Difference]: Finished difference Result 15040 states and 24752 transitions. [2020-10-29 14:04:16,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 14:04:16,682 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 117 [2020-10-29 14:04:16,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:04:16,740 INFO L225 Difference]: With dead ends: 15040 [2020-10-29 14:04:16,740 INFO L226 Difference]: Without dead ends: 10725 [2020-10-29 14:04:16,753 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:04:16,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10725 states. [2020-10-29 14:04:17,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10725 to 10690. [2020-10-29 14:04:17,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10690 states. [2020-10-29 14:04:17,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10690 states to 10690 states and 17476 transitions. [2020-10-29 14:04:17,489 INFO L78 Accepts]: Start accepts. Automaton has 10690 states and 17476 transitions. Word has length 117 [2020-10-29 14:04:17,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:04:17,489 INFO L481 AbstractCegarLoop]: Abstraction has 10690 states and 17476 transitions. [2020-10-29 14:04:17,489 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 14:04:17,490 INFO L276 IsEmpty]: Start isEmpty. Operand 10690 states and 17476 transitions. [2020-10-29 14:04:17,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-29 14:04:17,513 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:04:17,513 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:04:17,513 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 14:04:17,513 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:04:17,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:04:17,514 INFO L82 PathProgramCache]: Analyzing trace with hash -1131594734, now seen corresponding path program 1 times [2020-10-29 14:04:17,514 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:04:17,514 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1868285470] [2020-10-29 14:04:17,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:04:17,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:04:17,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:17,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:17,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:17,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:18,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:18,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:19,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:21,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:21,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:22,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:04:22,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-29 14:04:22,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 14:04:22,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-29 14:04:22,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:04:22,559 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:04:22,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:04:22,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:04:22,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-29 14:04:22,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 14:04:23,403 WARN L193 SmtUtils]: Spent 727.00 ms on a formula simplification that was a NOOP. DAG size: 289 [2020-10-29 14:04:23,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:04:23,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:04:23,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:23,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:04:23,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:04:23,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:04:23,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 14:04:23,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:04:23,428 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:04:23,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:04:23,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:04:23,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:04:23,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:04:23,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:04:23,470 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1868285470] [2020-10-29 14:04:23,471 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:04:23,471 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:04:23,471 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404508521] [2020-10-29 14:04:23,472 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:04:23,472 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:04:23,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:04:23,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:04:23,473 INFO L87 Difference]: Start difference. First operand 10690 states and 17476 transitions. Second operand 5 states. [2020-10-29 14:04:26,955 WARN L193 SmtUtils]: Spent 743.00 ms on a formula simplification that was a NOOP. DAG size: 295 [2020-10-29 14:04:27,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:04:27,471 INFO L93 Difference]: Finished difference Result 31388 states and 51294 transitions. [2020-10-29 14:04:27,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 14:04:27,473 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 121 [2020-10-29 14:04:27,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:04:27,527 INFO L225 Difference]: With dead ends: 31388 [2020-10-29 14:04:27,528 INFO L226 Difference]: Without dead ends: 20869 [2020-10-29 14:04:27,553 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 14:04:27,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20869 states. [2020-10-29 14:04:28,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20869 to 20866. [2020-10-29 14:04:28,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20866 states. [2020-10-29 14:04:28,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20866 states to 20866 states and 33900 transitions. [2020-10-29 14:04:28,812 INFO L78 Accepts]: Start accepts. Automaton has 20866 states and 33900 transitions. Word has length 121 [2020-10-29 14:04:28,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:04:28,813 INFO L481 AbstractCegarLoop]: Abstraction has 20866 states and 33900 transitions. [2020-10-29 14:04:28,813 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:04:28,813 INFO L276 IsEmpty]: Start isEmpty. Operand 20866 states and 33900 transitions. [2020-10-29 14:04:28,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-29 14:04:28,840 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:04:28,840 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:04:28,841 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 14:04:28,841 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:04:28,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:04:28,841 INFO L82 PathProgramCache]: Analyzing trace with hash 563453042, now seen corresponding path program 1 times [2020-10-29 14:04:28,842 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:04:28,842 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1805671071] [2020-10-29 14:04:28,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:04:28,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:04:28,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:28,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:29,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:29,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:29,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:29,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:29,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:30,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:30,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:33,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:04:33,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-29 14:04:33,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 14:04:33,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-29 14:04:33,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:04:33,901 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:04:33,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:04:33,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:04:33,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-29 14:04:33,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:04:34,678 WARN L193 SmtUtils]: Spent 656.00 ms on a formula simplification that was a NOOP. DAG size: 289 [2020-10-29 14:04:34,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:04:34,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:04:34,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:34,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:04:34,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:04:34,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:04:34,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 14:04:34,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:04:34,707 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:04:34,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:04:34,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:04:34,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:04:34,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:04:34,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:04:34,762 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1805671071] [2020-10-29 14:04:34,762 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:04:34,762 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:04:34,762 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586450070] [2020-10-29 14:04:34,763 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:04:34,763 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:04:34,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:04:34,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:04:34,764 INFO L87 Difference]: Start difference. First operand 20866 states and 33900 transitions. Second operand 5 states. [2020-10-29 14:04:39,121 WARN L193 SmtUtils]: Spent 667.00 ms on a formula simplification that was a NOOP. DAG size: 295 [2020-10-29 14:04:40,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:04:40,489 INFO L93 Difference]: Finished difference Result 60258 states and 97804 transitions. [2020-10-29 14:04:40,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 14:04:40,490 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 122 [2020-10-29 14:04:40,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:04:40,598 INFO L225 Difference]: With dead ends: 60258 [2020-10-29 14:04:40,598 INFO L226 Difference]: Without dead ends: 40847 [2020-10-29 14:04:40,645 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 14:04:40,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40847 states. [2020-10-29 14:04:43,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40847 to 40844. [2020-10-29 14:04:43,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40844 states. [2020-10-29 14:04:43,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40844 states to 40844 states and 66000 transitions. [2020-10-29 14:04:43,530 INFO L78 Accepts]: Start accepts. Automaton has 40844 states and 66000 transitions. Word has length 122 [2020-10-29 14:04:43,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:04:43,530 INFO L481 AbstractCegarLoop]: Abstraction has 40844 states and 66000 transitions. [2020-10-29 14:04:43,530 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:04:43,530 INFO L276 IsEmpty]: Start isEmpty. Operand 40844 states and 66000 transitions. [2020-10-29 14:04:43,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-29 14:04:43,567 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:04:43,567 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:04:43,567 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 14:04:43,567 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:04:43,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:04:43,568 INFO L82 PathProgramCache]: Analyzing trace with hash 960220070, now seen corresponding path program 1 times [2020-10-29 14:04:43,568 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:04:43,568 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1069167887] [2020-10-29 14:04:43,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:04:43,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:04:43,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:43,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:43,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:43,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:43,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:44,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:44,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:45,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:45,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:48,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:04:48,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-29 14:04:48,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 14:04:48,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-29 14:04:48,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:04:48,626 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:04:48,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:04:48,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-29 14:04:48,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-29 14:04:48,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:04:49,295 WARN L193 SmtUtils]: Spent 593.00 ms on a formula simplification that was a NOOP. DAG size: 289 [2020-10-29 14:04:49,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:04:49,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:04:49,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:49,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:04:49,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:04:49,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:04:49,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 14:04:49,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:04:49,317 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:04:49,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:04:49,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:04:49,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:04:49,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:04:49,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:04:49,342 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1069167887] [2020-10-29 14:04:49,342 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:04:49,342 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 14:04:49,342 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067479341] [2020-10-29 14:04:49,343 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 14:04:49,343 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:04:49,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 14:04:49,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 14:04:49,344 INFO L87 Difference]: Start difference. First operand 40844 states and 66000 transitions. Second operand 4 states. [2020-10-29 14:04:50,080 WARN L193 SmtUtils]: Spent 690.00 ms on a formula simplification that was a NOOP. DAG size: 293 [2020-10-29 14:04:56,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:04:56,370 INFO L93 Difference]: Finished difference Result 101778 states and 165844 transitions. [2020-10-29 14:04:56,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 14:04:56,370 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 123 [2020-10-29 14:04:56,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:04:56,547 INFO L225 Difference]: With dead ends: 101778 [2020-10-29 14:04:56,547 INFO L226 Difference]: Without dead ends: 70159 [2020-10-29 14:04:56,617 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:04:56,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70159 states. [2020-10-29 14:05:01,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70159 to 69900. [2020-10-29 14:05:01,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69900 states. [2020-10-29 14:05:01,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69900 states to 69900 states and 113232 transitions. [2020-10-29 14:05:01,506 INFO L78 Accepts]: Start accepts. Automaton has 69900 states and 113232 transitions. Word has length 123 [2020-10-29 14:05:01,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:05:01,506 INFO L481 AbstractCegarLoop]: Abstraction has 69900 states and 113232 transitions. [2020-10-29 14:05:01,506 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 14:05:01,506 INFO L276 IsEmpty]: Start isEmpty. Operand 69900 states and 113232 transitions. [2020-10-29 14:05:01,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-29 14:05:01,541 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:05:01,541 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:05:01,541 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 14:05:01,541 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:05:01,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:05:01,542 INFO L82 PathProgramCache]: Analyzing trace with hash 492707235, now seen corresponding path program 1 times [2020-10-29 14:05:01,542 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:05:01,542 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1024136751] [2020-10-29 14:05:01,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:05:01,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:05:01,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:05:01,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:05:01,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:05:01,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:05:02,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:05:02,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:05:02,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:05:03,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:05:03,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:05:03,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:05:03,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:05:06,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:05:06,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-29 14:05:06,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-29 14:05:06,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-29 14:05:06,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:05:06,764 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:05:06,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:05:06,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:05:06,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-29 14:05:06,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:05:07,482 WARN L193 SmtUtils]: Spent 615.00 ms on a formula simplification that was a NOOP. DAG size: 289 [2020-10-29 14:05:07,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:05:07,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:05:07,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:05:07,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:05:07,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:05:07,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:05:07,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 14:05:07,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:05:07,504 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:05:07,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:05:07,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:05:07,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:05:07,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:05:07,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:05:07,541 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1024136751] [2020-10-29 14:05:07,541 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:05:07,541 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:05:07,541 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521552905] [2020-10-29 14:05:07,542 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:05:07,542 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:05:07,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:05:07,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:05:07,542 INFO L87 Difference]: Start difference. First operand 69900 states and 113232 transitions. Second operand 5 states. [2020-10-29 14:05:13,150 WARN L193 SmtUtils]: Spent 650.00 ms on a formula simplification that was a NOOP. DAG size: 295 [2020-10-29 14:05:19,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:05:19,370 INFO L93 Difference]: Finished difference Result 204869 states and 331831 transitions. [2020-10-29 14:05:19,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 14:05:19,371 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 126 [2020-10-29 14:05:19,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:05:19,701 INFO L225 Difference]: With dead ends: 204869 [2020-10-29 14:05:19,701 INFO L226 Difference]: Without dead ends: 136194 [2020-10-29 14:05:19,801 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 14:05:19,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136194 states. [2020-10-29 14:05:28,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136194 to 136191. [2020-10-29 14:05:28,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136191 states. [2020-10-29 14:05:29,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136191 states to 136191 states and 219427 transitions. [2020-10-29 14:05:29,387 INFO L78 Accepts]: Start accepts. Automaton has 136191 states and 219427 transitions. Word has length 126 [2020-10-29 14:05:29,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:05:29,388 INFO L481 AbstractCegarLoop]: Abstraction has 136191 states and 219427 transitions. [2020-10-29 14:05:29,388 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:05:29,388 INFO L276 IsEmpty]: Start isEmpty. Operand 136191 states and 219427 transitions. [2020-10-29 14:05:29,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-29 14:05:29,450 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:05:29,450 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:05:29,451 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 14:05:29,451 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:05:29,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:05:29,451 INFO L82 PathProgramCache]: Analyzing trace with hash -391994762, now seen corresponding path program 1 times [2020-10-29 14:05:29,452 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:05:29,452 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [104818871] [2020-10-29 14:05:29,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:05:29,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:05:29,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:05:29,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:05:29,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:05:29,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:05:30,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:05:30,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:05:30,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:05:30,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:05:30,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:05:31,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:05:31,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:05:34,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:05:34,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-29 14:05:34,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-29 14:05:34,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-29 14:05:34,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:05:34,500 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:05:34,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:05:34,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:05:34,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-29 14:05:34,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:05:35,269 WARN L193 SmtUtils]: Spent 633.00 ms on a formula simplification that was a NOOP. DAG size: 289 [2020-10-29 14:05:35,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:05:35,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:05:35,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:05:35,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:05:35,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:05:35,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:05:35,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 14:05:35,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:05:35,300 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:05:35,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:05:35,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:05:35,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:05:35,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:05:35,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:05:35,358 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [104818871] [2020-10-29 14:05:35,358 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:05:35,358 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:05:35,358 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724162657] [2020-10-29 14:05:35,358 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:05:35,359 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:05:35,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:05:35,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:05:35,359 INFO L87 Difference]: Start difference. First operand 136191 states and 219427 transitions. Second operand 5 states. [2020-10-29 14:05:44,007 WARN L193 SmtUtils]: Spent 693.00 ms on a formula simplification that was a NOOP. DAG size: 295 [2020-10-29 14:05:59,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:05:59,112 INFO L93 Difference]: Finished difference Result 395585 states and 636809 transitions. [2020-10-29 14:05:59,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 14:05:59,113 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 127 [2020-10-29 14:05:59,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:05:59,793 INFO L225 Difference]: With dead ends: 395585 [2020-10-29 14:05:59,793 INFO L226 Difference]: Without dead ends: 264894 [2020-10-29 14:05:59,961 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 14:06:00,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264894 states. [2020-10-29 14:06:21,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264894 to 264891. [2020-10-29 14:06:21,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 264891 states. [2020-10-29 14:06:22,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264891 states to 264891 states and 424097 transitions. [2020-10-29 14:06:22,028 INFO L78 Accepts]: Start accepts. Automaton has 264891 states and 424097 transitions. Word has length 127 [2020-10-29 14:06:22,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:06:22,029 INFO L481 AbstractCegarLoop]: Abstraction has 264891 states and 424097 transitions. [2020-10-29 14:06:22,029 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:06:22,029 INFO L276 IsEmpty]: Start isEmpty. Operand 264891 states and 424097 transitions. [2020-10-29 14:06:22,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-29 14:06:22,176 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:06:22,177 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:06:22,177 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 14:06:22,177 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:06:22,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:06:22,178 INFO L82 PathProgramCache]: Analyzing trace with hash -824144798, now seen corresponding path program 1 times [2020-10-29 14:06:22,178 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:06:22,178 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1834500694] [2020-10-29 14:06:22,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:06:22,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:06:22,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:22,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:22,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:22,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:23,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:23,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:23,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:23,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:23,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:24,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:24,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:27,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:06:27,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-29 14:06:27,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-29 14:06:27,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-29 14:06:27,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:06:27,743 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:06:27,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:06:27,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:06:27,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-29 14:06:27,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:06:28,510 WARN L193 SmtUtils]: Spent 655.00 ms on a formula simplification that was a NOOP. DAG size: 289 [2020-10-29 14:06:28,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:06:28,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:06:28,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:28,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:06:28,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:06:28,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:06:28,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 14:06:28,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:06:28,536 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:06:28,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:06:28,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:06:28,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:06:28,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:06:28,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:06:28,590 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1834500694] [2020-10-29 14:06:28,590 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:06:28,590 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:06:28,590 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684096052] [2020-10-29 14:06:28,590 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:06:28,591 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:06:28,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:06:28,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:06:28,592 INFO L87 Difference]: Start difference. First operand 264891 states and 424097 transitions. Second operand 5 states. [2020-10-29 14:06:44,381 WARN L193 SmtUtils]: Spent 690.00 ms on a formula simplification that was a NOOP. DAG size: 295