/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=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 00:34:12,823 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 00:34:12,826 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 00:34:12,861 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 00:34:12,862 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 00:34:12,863 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 00:34:12,865 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 00:34:12,868 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 00:34:12,870 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 00:34:12,871 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 00:34:12,873 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 00:34:12,874 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 00:34:12,874 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 00:34:12,879 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 00:34:12,880 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 00:34:12,882 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 00:34:12,884 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 00:34:12,886 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 00:34:12,888 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 00:34:12,907 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 00:34:12,909 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 00:34:12,911 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 00:34:12,913 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 00:34:12,916 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 00:34:12,920 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 00:34:12,921 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 00:34:12,928 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 00:34:12,929 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 00:34:12,930 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 00:34:12,932 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 00:34:12,933 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 00:34:12,934 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 00:34:12,935 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 00:34:12,936 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 00:34:12,938 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 00:34:12,938 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 00:34:12,939 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 00:34:12,939 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 00:34:12,939 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 00:34:12,940 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 00:34:12,941 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 00:34:12,942 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-28 00:34:12,998 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 00:34:12,999 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 00:34:13,004 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 00:34:13,004 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 00:34:13,005 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 00:34:13,005 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 00:34:13,005 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 00:34:13,005 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 00:34:13,005 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 00:34:13,006 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 00:34:13,007 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 00:34:13,007 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 00:34:13,008 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 00:34:13,008 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 00:34:13,008 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 00:34:13,008 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 00:34:13,008 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 00:34:13,009 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 00:34:13,009 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 00:34:13,009 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 00:34:13,009 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 00:34:13,010 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 00:34:13,010 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 00:34:13,010 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 00:34:13,011 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 00:34:13,011 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 00:34:13,011 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 00:34:13,011 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 00:34:13,011 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 00:34:13,012 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-28 00:34:13,440 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 00:34:13,472 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 00:34:13,475 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 00:34:13,477 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 00:34:13,477 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 00:34:13,478 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-28 00:34:13,575 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4b2df1f8d/edf47f0bb0904c3c924f48d5d85ae10b/FLAGb4edaee99 [2020-10-28 00:34:14,270 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 00:34:14,271 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-28 00:34:14,287 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4b2df1f8d/edf47f0bb0904c3c924f48d5d85ae10b/FLAGb4edaee99 [2020-10-28 00:34:14,549 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4b2df1f8d/edf47f0bb0904c3c924f48d5d85ae10b [2020-10-28 00:34:14,555 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 00:34:14,565 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 00:34:14,568 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 00:34:14,568 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 00:34:14,573 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 00:34:14,574 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:34:14" (1/1) ... [2020-10-28 00:34:14,580 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b4cfa71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:34:14, skipping insertion in model container [2020-10-28 00:34:14,581 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:34:14" (1/1) ... [2020-10-28 00:34:14,591 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 00:34:14,679 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 00:34:15,160 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 00:34:15,185 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 00:34:15,383 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 00:34:15,417 INFO L208 MainTranslator]: Completed translation [2020-10-28 00:34:15,418 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:34:15 WrapperNode [2020-10-28 00:34:15,418 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 00:34:15,420 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 00:34:15,420 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 00:34:15,421 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 00:34:15,436 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:34:15" (1/1) ... [2020-10-28 00:34:15,438 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:34:15" (1/1) ... [2020-10-28 00:34:15,485 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:34:15" (1/1) ... [2020-10-28 00:34:15,485 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:34:15" (1/1) ... [2020-10-28 00:34:15,533 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:34:15" (1/1) ... [2020-10-28 00:34:15,557 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:34:15" (1/1) ... [2020-10-28 00:34:15,563 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:34:15" (1/1) ... [2020-10-28 00:34:15,572 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 00:34:15,574 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 00:34:15,574 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 00:34:15,574 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 00:34:15,575 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:34:15" (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 [2020-10-28 00:34:15,657 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 00:34:15,658 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 00:34:15,658 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 00:34:15,658 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-28 00:34:15,658 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 00:34:15,658 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 00:34:15,658 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 00:34:15,659 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 00:34:15,659 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 00:34:15,659 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-28 00:34:15,659 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-28 00:34:15,659 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-28 00:34:15,659 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-28 00:34:15,660 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-28 00:34:15,660 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-28 00:34:15,660 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-28 00:34:15,660 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-28 00:34:15,660 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-28 00:34:15,660 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-28 00:34:15,661 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-28 00:34:15,661 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-28 00:34:15,661 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-28 00:34:15,661 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 00:34:15,661 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 00:34:15,661 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 00:34:15,662 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 00:34:15,662 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 00:34:15,662 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 00:34:15,662 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 00:34:17,729 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 00:34:17,729 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-28 00:34:17,732 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:34:17 BoogieIcfgContainer [2020-10-28 00:34:17,732 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 00:34:17,734 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 00:34:17,735 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 00:34:17,738 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 00:34:17,739 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 12:34:14" (1/3) ... [2020-10-28 00:34:17,740 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3791ed1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:34:17, skipping insertion in model container [2020-10-28 00:34:17,740 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:34:15" (2/3) ... [2020-10-28 00:34:17,740 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3791ed1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:34:17, skipping insertion in model container [2020-10-28 00:34:17,741 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:34:17" (3/3) ... [2020-10-28 00:34:17,742 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-28 00:34:17,756 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 00:34:17,762 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 00:34:17,777 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 00:34:17,809 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 00:34:17,809 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 00:34:17,809 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 00:34:17,810 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 00:34:17,810 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 00:34:17,810 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 00:34:17,810 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 00:34:17,810 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 00:34:17,838 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states. [2020-10-28 00:34:17,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-28 00:34:17,857 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:34:17,859 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] [2020-10-28 00:34:17,859 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:34:17,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:34:17,866 INFO L82 PathProgramCache]: Analyzing trace with hash -561736880, now seen corresponding path program 1 times [2020-10-28 00:34:17,877 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:34:17,877 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [642209913] [2020-10-28 00:34:17,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:34:18,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:34:18,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:18,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:19,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:20,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:20,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:23,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:34:23,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-28 00:34:23,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 00:34:23,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-28 00:34:23,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:34:23,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 00:34:23,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-28 00:34:23,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-28 00:34:23,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 00:34:24,533 WARN L193 SmtUtils]: Spent 836.00 ms on a formula simplification that was a NOOP. DAG size: 289 [2020-10-28 00:34:24,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:34:24,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:34:24,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:24,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:34:24,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:34:24,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:34:24,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-28 00:34:24,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:34:24,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:34:24,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:34:24,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:34:24,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:34:24,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:34:24,689 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [642209913] [2020-10-28 00:34:24,691 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:34:24,691 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-28 00:34:24,692 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192415881] [2020-10-28 00:34:24,697 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 00:34:24,698 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:34:24,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 00:34:24,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-28 00:34:24,716 INFO L87 Difference]: Start difference. First operand 359 states. Second operand 7 states. [2020-10-28 00:34:25,547 WARN L193 SmtUtils]: Spent 708.00 ms on a formula simplification that was a NOOP. DAG size: 297 [2020-10-28 00:34:29,005 WARN L193 SmtUtils]: Spent 634.00 ms on a formula simplification that was a NOOP. DAG size: 293 [2020-10-28 00:34:29,715 WARN L193 SmtUtils]: Spent 680.00 ms on a formula simplification that was a NOOP. DAG size: 295 [2020-10-28 00:34:30,373 WARN L193 SmtUtils]: Spent 626.00 ms on a formula simplification that was a NOOP. DAG size: 291 [2020-10-28 00:34:31,195 WARN L193 SmtUtils]: Spent 653.00 ms on a formula simplification that was a NOOP. DAG size: 295 [2020-10-28 00:34:31,869 WARN L193 SmtUtils]: Spent 637.00 ms on a formula simplification that was a NOOP. DAG size: 293 [2020-10-28 00:34:32,513 WARN L193 SmtUtils]: Spent 612.00 ms on a formula simplification that was a NOOP. DAG size: 292 [2020-10-28 00:34:32,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:34:32,633 INFO L93 Difference]: Finished difference Result 1619 states and 2742 transitions. [2020-10-28 00:34:32,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-28 00:34:32,635 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 123 [2020-10-28 00:34:32,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:34:32,670 INFO L225 Difference]: With dead ends: 1619 [2020-10-28 00:34:32,671 INFO L226 Difference]: Without dead ends: 1437 [2020-10-28 00:34:32,681 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=106, Invalid=236, Unknown=0, NotChecked=0, Total=342 [2020-10-28 00:34:32,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1437 states. [2020-10-28 00:34:32,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1437 to 504. [2020-10-28 00:34:32,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 504 states. [2020-10-28 00:34:32,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 504 states to 504 states and 833 transitions. [2020-10-28 00:34:32,817 INFO L78 Accepts]: Start accepts. Automaton has 504 states and 833 transitions. Word has length 123 [2020-10-28 00:34:32,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:34:32,818 INFO L481 AbstractCegarLoop]: Abstraction has 504 states and 833 transitions. [2020-10-28 00:34:32,819 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 00:34:32,819 INFO L276 IsEmpty]: Start isEmpty. Operand 504 states and 833 transitions. [2020-10-28 00:34:32,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-28 00:34:32,826 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:34:32,826 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] [2020-10-28 00:34:32,826 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 00:34:32,827 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:34:32,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:34:32,829 INFO L82 PathProgramCache]: Analyzing trace with hash 2008777545, now seen corresponding path program 1 times [2020-10-28 00:34:32,829 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:34:32,830 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [51453578] [2020-10-28 00:34:32,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:34:32,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:34:32,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:33,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:33,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:34,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:34,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:34,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:37,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:34:37,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-28 00:34:37,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 00:34:37,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-28 00:34:37,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:34:37,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 00:34:37,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 91 [2020-10-28 00:34:37,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-28 00:34:37,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:34:38,619 WARN L193 SmtUtils]: Spent 557.00 ms on a formula simplification that was a NOOP. DAG size: 289 [2020-10-28 00:34:38,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:34:38,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:34:38,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:38,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:34:38,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:34:38,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:34:38,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-28 00:34:38,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:34:38,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:34:38,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:34:38,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:34:38,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:34:38,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:34:38,757 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [51453578] [2020-10-28 00:34:38,757 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:34:38,757 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-28 00:34:38,758 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999984335] [2020-10-28 00:34:38,762 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 00:34:38,762 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:34:38,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 00:34:38,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-28 00:34:38,763 INFO L87 Difference]: Start difference. First operand 504 states and 833 transitions. Second operand 8 states. [2020-10-28 00:34:39,489 WARN L193 SmtUtils]: Spent 636.00 ms on a formula simplification that was a NOOP. DAG size: 299 [2020-10-28 00:34:42,555 WARN L193 SmtUtils]: Spent 633.00 ms on a formula simplification that was a NOOP. DAG size: 293 [2020-10-28 00:34:43,297 WARN L193 SmtUtils]: Spent 637.00 ms on a formula simplification that was a NOOP. DAG size: 295 [2020-10-28 00:34:43,943 WARN L193 SmtUtils]: Spent 610.00 ms on a formula simplification that was a NOOP. DAG size: 291 [2020-10-28 00:34:44,618 WARN L193 SmtUtils]: Spent 642.00 ms on a formula simplification that was a NOOP. DAG size: 296 [2020-10-28 00:34:45,401 WARN L193 SmtUtils]: Spent 647.00 ms on a formula simplification that was a NOOP. DAG size: 296 [2020-10-28 00:34:46,239 WARN L193 SmtUtils]: Spent 747.00 ms on a formula simplification that was a NOOP. DAG size: 298 [2020-10-28 00:34:46,892 WARN L193 SmtUtils]: Spent 619.00 ms on a formula simplification that was a NOOP. DAG size: 294 [2020-10-28 00:34:48,060 WARN L193 SmtUtils]: Spent 638.00 ms on a formula simplification that was a NOOP. DAG size: 298 [2020-10-28 00:34:48,764 WARN L193 SmtUtils]: Spent 612.00 ms on a formula simplification that was a NOOP. DAG size: 296 [2020-10-28 00:34:49,956 WARN L193 SmtUtils]: Spent 625.00 ms on a formula simplification that was a NOOP. DAG size: 295 [2020-10-28 00:34:50,597 WARN L193 SmtUtils]: Spent 604.00 ms on a formula simplification that was a NOOP. DAG size: 293 [2020-10-28 00:34:50,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:34:50,622 INFO L93 Difference]: Finished difference Result 3768 states and 6286 transitions. [2020-10-28 00:34:50,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-28 00:34:50,622 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 124 [2020-10-28 00:34:50,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:34:50,643 INFO L225 Difference]: With dead ends: 3768 [2020-10-28 00:34:50,643 INFO L226 Difference]: Without dead ends: 3461 [2020-10-28 00:34:50,648 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=257, Invalid=673, Unknown=0, NotChecked=0, Total=930 [2020-10-28 00:34:50,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3461 states. [2020-10-28 00:34:50,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3461 to 1341. [2020-10-28 00:34:50,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1341 states. [2020-10-28 00:34:50,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1341 states to 1341 states and 2234 transitions. [2020-10-28 00:34:50,781 INFO L78 Accepts]: Start accepts. Automaton has 1341 states and 2234 transitions. Word has length 124 [2020-10-28 00:34:50,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:34:50,782 INFO L481 AbstractCegarLoop]: Abstraction has 1341 states and 2234 transitions. [2020-10-28 00:34:50,782 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 00:34:50,782 INFO L276 IsEmpty]: Start isEmpty. Operand 1341 states and 2234 transitions. [2020-10-28 00:34:50,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-10-28 00:34:50,785 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:34:50,785 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] [2020-10-28 00:34:50,785 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 00:34:50,786 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:34:50,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:34:50,786 INFO L82 PathProgramCache]: Analyzing trace with hash 231644809, now seen corresponding path program 1 times [2020-10-28 00:34:50,787 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:34:50,787 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [59250114] [2020-10-28 00:34:50,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:34:50,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:34:50,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:50,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:51,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:51,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:52,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:52,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:55,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:34:55,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-28 00:34:55,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 00:34:55,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-28 00:34:55,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:34:55,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 00:34:55,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 91 [2020-10-28 00:34:55,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-28 00:34:55,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:34:56,564 WARN L193 SmtUtils]: Spent 621.00 ms on a formula simplification that was a NOOP. DAG size: 289 [2020-10-28 00:34:56,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:34:56,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:34:56,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:56,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:34:56,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:34:56,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:34:56,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-28 00:34:56,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:34:56,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:34:56,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:34:56,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:34:56,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 00:34:56,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:34:56,679 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [59250114] [2020-10-28 00:34:56,679 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:34:56,680 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 00:34:56,680 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899052277] [2020-10-28 00:34:56,683 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 00:34:56,683 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:34:56,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 00:34:56,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:34:56,687 INFO L87 Difference]: Start difference. First operand 1341 states and 2234 transitions. Second operand 5 states. [2020-10-28 00:34:57,541 WARN L193 SmtUtils]: Spent 760.00 ms on a formula simplification that was a NOOP. DAG size: 293 [2020-10-28 00:35:00,377 WARN L193 SmtUtils]: Spent 645.00 ms on a formula simplification that was a NOOP. DAG size: 291 [2020-10-28 00:35:00,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:35:00,556 INFO L93 Difference]: Finished difference Result 4479 states and 7490 transitions. [2020-10-28 00:35:00,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 00:35:00,556 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 125 [2020-10-28 00:35:00,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:35:00,577 INFO L225 Difference]: With dead ends: 4479 [2020-10-28 00:35:00,577 INFO L226 Difference]: Without dead ends: 3449 [2020-10-28 00:35:00,581 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-28 00:35:00,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3449 states. [2020-10-28 00:35:00,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3449 to 2409. [2020-10-28 00:35:00,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2409 states. [2020-10-28 00:35:00,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2409 states to 2409 states and 4020 transitions. [2020-10-28 00:35:00,786 INFO L78 Accepts]: Start accepts. Automaton has 2409 states and 4020 transitions. Word has length 125 [2020-10-28 00:35:00,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:35:00,786 INFO L481 AbstractCegarLoop]: Abstraction has 2409 states and 4020 transitions. [2020-10-28 00:35:00,786 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 00:35:00,787 INFO L276 IsEmpty]: Start isEmpty. Operand 2409 states and 4020 transitions. [2020-10-28 00:35:00,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-28 00:35:00,789 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:35:00,789 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] [2020-10-28 00:35:00,789 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 00:35:00,790 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:35:00,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:35:00,790 INFO L82 PathProgramCache]: Analyzing trace with hash 1116403554, now seen corresponding path program 1 times [2020-10-28 00:35:00,790 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:35:00,791 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [51890045] [2020-10-28 00:35:00,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:35:00,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:35:00,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:00,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:01,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:01,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:01,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:01,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:05,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:35:05,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-28 00:35:05,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 00:35:05,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5114 [2020-10-28 00:35:05,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:35:05,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 00:35:05,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-10-28 00:35:05,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-28 00:35:05,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:35:06,681 WARN L193 SmtUtils]: Spent 627.00 ms on a formula simplification that was a NOOP. DAG size: 289 [2020-10-28 00:35:06,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:35:06,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:35:06,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:06,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:35:06,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:35:06,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:35:06,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 00:35:06,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:35:06,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:35:06,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:35:06,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:35:06,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:35:06,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:35:06,751 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [51890045] [2020-10-28 00:35:06,751 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:35:06,751 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 00:35:06,751 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340088840] [2020-10-28 00:35:06,752 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 00:35:06,752 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:35:06,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 00:35:06,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:35:06,753 INFO L87 Difference]: Start difference. First operand 2409 states and 4020 transitions. Second operand 5 states. [2020-10-28 00:35:07,480 WARN L193 SmtUtils]: Spent 652.00 ms on a formula simplification that was a NOOP. DAG size: 293 [2020-10-28 00:35:10,252 WARN L193 SmtUtils]: Spent 595.00 ms on a formula simplification that was a NOOP. DAG size: 291 [2020-10-28 00:35:10,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:35:10,508 INFO L93 Difference]: Finished difference Result 8587 states and 14358 transitions. [2020-10-28 00:35:10,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 00:35:10,508 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 126 [2020-10-28 00:35:10,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:35:10,544 INFO L225 Difference]: With dead ends: 8587 [2020-10-28 00:35:10,544 INFO L226 Difference]: Without dead ends: 6537 [2020-10-28 00:35:10,552 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-28 00:35:10,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6537 states. [2020-10-28 00:35:10,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6537 to 4470. [2020-10-28 00:35:10,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4470 states. [2020-10-28 00:35:10,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4470 states to 4470 states and 7460 transitions. [2020-10-28 00:35:10,954 INFO L78 Accepts]: Start accepts. Automaton has 4470 states and 7460 transitions. Word has length 126 [2020-10-28 00:35:10,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:35:10,955 INFO L481 AbstractCegarLoop]: Abstraction has 4470 states and 7460 transitions. [2020-10-28 00:35:10,955 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 00:35:10,955 INFO L276 IsEmpty]: Start isEmpty. Operand 4470 states and 7460 transitions. [2020-10-28 00:35:10,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-28 00:35:10,957 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:35:10,958 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] [2020-10-28 00:35:10,958 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 00:35:10,958 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:35:10,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:35:10,959 INFO L82 PathProgramCache]: Analyzing trace with hash -1379547710, now seen corresponding path program 1 times [2020-10-28 00:35:10,959 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:35:10,959 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1407360678] [2020-10-28 00:35:10,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:35:10,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:35:11,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:11,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:11,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:11,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:12,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:12,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:16,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:35:16,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-28 00:35:16,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 00:35:16,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-28 00:35:16,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:35:16,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 00:35:16,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-10-28 00:35:16,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-28 00:35:16,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:35:16,743 WARN L193 SmtUtils]: Spent 636.00 ms on a formula simplification that was a NOOP. DAG size: 289 [2020-10-28 00:35:16,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:35:16,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:35:16,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:16,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:35:16,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:35:16,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:35:16,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 00:35:16,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:35:16,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:35:16,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:35:16,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:35:16,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:35:16,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:35:16,815 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1407360678] [2020-10-28 00:35:16,815 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:35:16,815 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 00:35:16,816 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637157519] [2020-10-28 00:35:16,816 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 00:35:16,816 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:35:16,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 00:35:16,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:35:16,826 INFO L87 Difference]: Start difference. First operand 4470 states and 7460 transitions. Second operand 5 states. [2020-10-28 00:35:17,503 WARN L193 SmtUtils]: Spent 618.00 ms on a formula simplification that was a NOOP. DAG size: 293 [2020-10-28 00:35:20,365 WARN L193 SmtUtils]: Spent 646.00 ms on a formula simplification that was a NOOP. DAG size: 291 [2020-10-28 00:35:20,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:35:20,825 INFO L93 Difference]: Finished difference Result 16719 states and 27926 transitions. [2020-10-28 00:35:20,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 00:35:20,826 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 127 [2020-10-28 00:35:20,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:35:20,892 INFO L225 Difference]: With dead ends: 16719 [2020-10-28 00:35:20,893 INFO L226 Difference]: Without dead ends: 12636 [2020-10-28 00:35:20,907 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-28 00:35:20,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12636 states. [2020-10-28 00:35:21,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12636 to 8522. [2020-10-28 00:35:21,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8522 states. [2020-10-28 00:35:21,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8522 states to 8522 states and 14208 transitions. [2020-10-28 00:35:21,740 INFO L78 Accepts]: Start accepts. Automaton has 8522 states and 14208 transitions. Word has length 127 [2020-10-28 00:35:21,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:35:21,740 INFO L481 AbstractCegarLoop]: Abstraction has 8522 states and 14208 transitions. [2020-10-28 00:35:21,740 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 00:35:21,740 INFO L276 IsEmpty]: Start isEmpty. Operand 8522 states and 14208 transitions. [2020-10-28 00:35:21,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-10-28 00:35:21,744 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:35:21,744 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:35:21,744 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 00:35:21,744 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:35:21,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:35:21,745 INFO L82 PathProgramCache]: Analyzing trace with hash -1861248334, now seen corresponding path program 1 times [2020-10-28 00:35:21,745 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:35:21,745 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1324442007] [2020-10-28 00:35:21,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:35:21,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:35:21,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:21,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:22,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:22,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:22,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:22,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:26,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:35:26,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-28 00:35:26,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 00:35:26,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-28 00:35:26,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:35:26,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:35:26,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 109 [2020-10-28 00:35:26,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-28 00:35:26,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:35:27,518 WARN L193 SmtUtils]: Spent 607.00 ms on a formula simplification that was a NOOP. DAG size: 289 [2020-10-28 00:35:27,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:35:27,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:35:27,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:27,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:35:27,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:35:27,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:35:27,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 00:35:27,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:35:27,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:35:27,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:35:27,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:35:27,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:35:27,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:35:27,590 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1324442007] [2020-10-28 00:35:27,590 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:35:27,591 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:35:27,591 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084781919] [2020-10-28 00:35:27,591 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:35:27,592 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:35:27,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:35:27,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:35:27,592 INFO L87 Difference]: Start difference. First operand 8522 states and 14208 transitions. Second operand 4 states. [2020-10-28 00:35:30,574 WARN L193 SmtUtils]: Spent 668.00 ms on a formula simplification that was a NOOP. DAG size: 295 [2020-10-28 00:35:31,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:35:31,533 INFO L93 Difference]: Finished difference Result 23199 states and 38552 transitions. [2020-10-28 00:35:31,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:35:31,534 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 129 [2020-10-28 00:35:31,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:35:31,576 INFO L225 Difference]: With dead ends: 23199 [2020-10-28 00:35:31,577 INFO L226 Difference]: Without dead ends: 15064 [2020-10-28 00:35:31,601 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:35:31,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15064 states. [2020-10-28 00:35:32,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15064 to 14948. [2020-10-28 00:35:32,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14948 states. [2020-10-28 00:35:32,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14948 states to 14948 states and 24659 transitions. [2020-10-28 00:35:32,941 INFO L78 Accepts]: Start accepts. Automaton has 14948 states and 24659 transitions. Word has length 129 [2020-10-28 00:35:32,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:35:32,941 INFO L481 AbstractCegarLoop]: Abstraction has 14948 states and 24659 transitions. [2020-10-28 00:35:32,941 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:35:32,942 INFO L276 IsEmpty]: Start isEmpty. Operand 14948 states and 24659 transitions. [2020-10-28 00:35:32,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-28 00:35:32,945 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:35:32,946 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:35:32,946 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 00:35:32,946 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:35:32,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:35:32,947 INFO L82 PathProgramCache]: Analyzing trace with hash 1499033117, now seen corresponding path program 1 times [2020-10-28 00:35:32,947 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:35:32,948 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1563608382] [2020-10-28 00:35:32,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:35:32,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:35:33,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:33,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:33,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:33,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:33,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:34,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:34,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:38,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:35:38,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-28 00:35:38,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 00:35:38,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5059 [2020-10-28 00:35:38,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:35:38,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:35:38,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 100 [2020-10-28 00:35:38,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-28 00:35:38,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:35:38,723 WARN L193 SmtUtils]: Spent 594.00 ms on a formula simplification that was a NOOP. DAG size: 289 [2020-10-28 00:35:38,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:35:38,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:35:38,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:38,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:35:38,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:35:38,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:35:38,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 00:35:38,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:35:38,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:35:38,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:35:38,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:35:38,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:35:38,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:35:38,791 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1563608382] [2020-10-28 00:35:38,791 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:35:38,792 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:35:38,792 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517700742] [2020-10-28 00:35:38,792 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:35:38,793 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:35:38,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:35:38,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:35:38,793 INFO L87 Difference]: Start difference. First operand 14948 states and 24659 transitions. Second operand 4 states. [2020-10-28 00:35:39,491 WARN L193 SmtUtils]: Spent 641.00 ms on a formula simplification that was a NOOP. DAG size: 293 [2020-10-28 00:35:43,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:35:43,363 INFO L93 Difference]: Finished difference Result 40278 states and 66323 transitions. [2020-10-28 00:35:43,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:35:43,364 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 130 [2020-10-28 00:35:43,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:35:43,426 INFO L225 Difference]: With dead ends: 40278 [2020-10-28 00:35:43,426 INFO L226 Difference]: Without dead ends: 25719 [2020-10-28 00:35:43,463 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:35:43,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25719 states. [2020-10-28 00:35:44,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25719 to 25716. [2020-10-28 00:35:44,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25716 states. [2020-10-28 00:35:45,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25716 states to 25716 states and 42179 transitions. [2020-10-28 00:35:45,002 INFO L78 Accepts]: Start accepts. Automaton has 25716 states and 42179 transitions. Word has length 130 [2020-10-28 00:35:45,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:35:45,003 INFO L481 AbstractCegarLoop]: Abstraction has 25716 states and 42179 transitions. [2020-10-28 00:35:45,003 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:35:45,003 INFO L276 IsEmpty]: Start isEmpty. Operand 25716 states and 42179 transitions. [2020-10-28 00:35:45,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-28 00:35:45,006 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:35:45,006 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:35:45,006 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 00:35:45,006 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:35:45,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:35:45,007 INFO L82 PathProgramCache]: Analyzing trace with hash -1691766384, now seen corresponding path program 1 times [2020-10-28 00:35:45,007 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:35:45,007 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1863115105] [2020-10-28 00:35:45,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:35:45,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:35:45,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:45,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:45,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:45,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:46,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:46,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:47,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:35:47,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-28 00:35:47,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 00:35:47,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2010 [2020-10-28 00:35:47,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:35:47,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:35:47,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-28 00:35:47,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-28 00:35:47,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:35:47,739 WARN L193 SmtUtils]: Spent 630.00 ms on a formula simplification that was a NOOP. DAG size: 289 [2020-10-28 00:35:47,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:35:47,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:35:47,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:47,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:35:47,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:35:47,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:35:47,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 00:35:47,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:35:47,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:35:47,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:35:47,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:35:47,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:35:47,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:35:47,794 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1863115105] [2020-10-28 00:35:47,794 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:35:47,794 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:35:47,794 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639437020] [2020-10-28 00:35:47,795 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:35:47,795 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:35:47,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:35:47,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:35:47,796 INFO L87 Difference]: Start difference. First operand 25716 states and 42179 transitions. Second operand 4 states. [2020-10-28 00:35:48,527 WARN L193 SmtUtils]: Spent 670.00 ms on a formula simplification that was a NOOP. DAG size: 293 [2020-10-28 00:35:52,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:35:52,985 INFO L93 Difference]: Finished difference Result 62606 states and 102503 transitions. [2020-10-28 00:35:52,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:35:52,985 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 130 [2020-10-28 00:35:52,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:35:53,064 INFO L225 Difference]: With dead ends: 62606 [2020-10-28 00:35:53,064 INFO L226 Difference]: Without dead ends: 37291 [2020-10-28 00:35:53,120 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 [2020-10-28 00:35:53,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37291 states. [2020-10-28 00:35:55,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37291 to 37176. [2020-10-28 00:35:55,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37176 states. [2020-10-28 00:35:55,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37176 states to 37176 states and 60631 transitions. [2020-10-28 00:35:55,514 INFO L78 Accepts]: Start accepts. Automaton has 37176 states and 60631 transitions. Word has length 130 [2020-10-28 00:35:55,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:35:55,514 INFO L481 AbstractCegarLoop]: Abstraction has 37176 states and 60631 transitions. [2020-10-28 00:35:55,514 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:35:55,514 INFO L276 IsEmpty]: Start isEmpty. Operand 37176 states and 60631 transitions. [2020-10-28 00:35:55,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-28 00:35:55,517 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:35:55,517 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:35:55,518 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 00:35:55,518 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:35:55,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:35:55,518 INFO L82 PathProgramCache]: Analyzing trace with hash 1798671982, now seen corresponding path program 1 times [2020-10-28 00:35:55,518 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:35:55,519 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [799599980] [2020-10-28 00:35:55,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:35:55,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:35:55,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:55,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:55,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:55,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:56,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:56,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:59,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:59,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:00,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:00,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:36:00,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-28 00:36:00,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-28 00:36:00,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-28 00:36:00,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:36:00,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:36:00,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-10-28 00:36:00,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-28 00:36:00,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:36:01,259 WARN L193 SmtUtils]: Spent 633.00 ms on a formula simplification that was a NOOP. DAG size: 289 [2020-10-28 00:36:01,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:36:01,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:36:01,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:01,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:36:01,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:36:01,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:36:01,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 00:36:01,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:36:01,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:36:01,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:36:01,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:36:01,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:36:01,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:36:01,304 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [799599980] [2020-10-28 00:36:01,304 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:36:01,304 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:36:01,304 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474246877] [2020-10-28 00:36:01,304 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:36:01,305 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:36:01,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:36:01,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:36:01,305 INFO L87 Difference]: Start difference. First operand 37176 states and 60631 transitions. Second operand 4 states. [2020-10-28 00:36:02,042 WARN L193 SmtUtils]: Spent 682.00 ms on a formula simplification that was a NOOP. DAG size: 293 [2020-10-28 00:36:07,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:36:07,135 INFO L93 Difference]: Finished difference Result 80895 states and 132031 transitions. [2020-10-28 00:36:07,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:36:07,135 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 130 [2020-10-28 00:36:07,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:36:07,244 INFO L225 Difference]: With dead ends: 80895 [2020-10-28 00:36:07,245 INFO L226 Difference]: Without dead ends: 55570 [2020-10-28 00:36:07,285 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 [2020-10-28 00:36:07,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55570 states. [2020-10-28 00:36:10,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55570 to 55567. [2020-10-28 00:36:10,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55567 states. [2020-10-28 00:36:10,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55567 states to 55567 states and 90255 transitions. [2020-10-28 00:36:10,929 INFO L78 Accepts]: Start accepts. Automaton has 55567 states and 90255 transitions. Word has length 130 [2020-10-28 00:36:10,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:36:10,929 INFO L481 AbstractCegarLoop]: Abstraction has 55567 states and 90255 transitions. [2020-10-28 00:36:10,929 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:36:10,929 INFO L276 IsEmpty]: Start isEmpty. Operand 55567 states and 90255 transitions. [2020-10-28 00:36:10,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-10-28 00:36:10,945 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:36:10,945 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:36:10,945 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 00:36:10,945 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:36:10,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:36:10,946 INFO L82 PathProgramCache]: Analyzing trace with hash -1015330237, now seen corresponding path program 1 times [2020-10-28 00:36:10,946 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:36:10,946 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [222407830] [2020-10-28 00:36:10,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:36:10,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:36:11,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:11,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:11,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:11,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:11,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:11,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:15,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:15,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:15,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:36:15,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-28 00:36:15,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 00:36:15,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-28 00:36:15,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:36:15,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:36:15,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-28 00:36:15,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-28 00:36:15,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:36:16,662 WARN L193 SmtUtils]: Spent 620.00 ms on a formula simplification that was a NOOP. DAG size: 289 [2020-10-28 00:36:16,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:36:16,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:36:16,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:16,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:36:16,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:36:16,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:36:16,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 00:36:16,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:36:16,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:36:16,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:36:16,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:36:16,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:36:16,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:36:16,712 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [222407830] [2020-10-28 00:36:16,712 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:36:16,713 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:36:16,713 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831106602] [2020-10-28 00:36:16,713 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:36:16,713 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:36:16,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:36:16,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:36:16,714 INFO L87 Difference]: Start difference. First operand 55567 states and 90255 transitions. Second operand 4 states. [2020-10-28 00:36:17,430 WARN L193 SmtUtils]: Spent 670.00 ms on a formula simplification that was a NOOP. DAG size: 293 [2020-10-28 00:36:23,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:36:23,430 INFO L93 Difference]: Finished difference Result 125163 states and 203239 transitions. [2020-10-28 00:36:23,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:36:23,431 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 133 [2020-10-28 00:36:23,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:36:23,557 INFO L225 Difference]: With dead ends: 125163 [2020-10-28 00:36:23,557 INFO L226 Difference]: Without dead ends: 70182 [2020-10-28 00:36:23,616 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 [2020-10-28 00:36:23,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70182 states. [2020-10-28 00:36:27,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70182 to 70039. [2020-10-28 00:36:27,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70039 states. [2020-10-28 00:36:28,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70039 states to 70039 states and 113503 transitions. [2020-10-28 00:36:28,032 INFO L78 Accepts]: Start accepts. Automaton has 70039 states and 113503 transitions. Word has length 133 [2020-10-28 00:36:28,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:36:28,033 INFO L481 AbstractCegarLoop]: Abstraction has 70039 states and 113503 transitions. [2020-10-28 00:36:28,033 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:36:28,033 INFO L276 IsEmpty]: Start isEmpty. Operand 70039 states and 113503 transitions. [2020-10-28 00:36:28,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-10-28 00:36:28,038 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:36:28,038 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:36:28,038 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 00:36:28,038 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:36:28,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:36:28,039 INFO L82 PathProgramCache]: Analyzing trace with hash -540004219, now seen corresponding path program 1 times [2020-10-28 00:36:28,039 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:36:28,039 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [422422301] [2020-10-28 00:36:28,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:36:28,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:36:28,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:28,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:28,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:28,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:28,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:28,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:28,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:29,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:33,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:36:33,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-28 00:36:33,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 00:36:33,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-28 00:36:33,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:36:33,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:36:33,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-28 00:36:33,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-28 00:36:33,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:36:33,742 WARN L193 SmtUtils]: Spent 587.00 ms on a formula simplification that was a NOOP. DAG size: 289 [2020-10-28 00:36:33,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:36:33,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:36:33,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:33,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:36:33,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:36:33,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:36:33,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 00:36:33,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:36:33,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:36:33,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:36:33,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:36:33,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:36:33,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:36:33,801 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [422422301] [2020-10-28 00:36:33,801 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:36:33,801 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:36:33,801 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904348838] [2020-10-28 00:36:33,801 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:36:33,801 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:36:33,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:36:33,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:36:33,802 INFO L87 Difference]: Start difference. First operand 70039 states and 113503 transitions. Second operand 4 states. [2020-10-28 00:36:34,497 WARN L193 SmtUtils]: Spent 639.00 ms on a formula simplification that was a NOOP. DAG size: 293 [2020-10-28 00:36:42,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:36:42,321 INFO L93 Difference]: Finished difference Result 171240 states and 276842 transitions. [2020-10-28 00:36:42,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:36:42,322 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 136 [2020-10-28 00:36:42,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:36:42,637 INFO L225 Difference]: With dead ends: 171240 [2020-10-28 00:36:42,638 INFO L226 Difference]: Without dead ends: 101523 [2020-10-28 00:36:42,694 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:36:42,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101523 states. [2020-10-28 00:36:48,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101523 to 101170. [2020-10-28 00:36:48,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101170 states. [2020-10-28 00:36:48,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101170 states to 101170 states and 162804 transitions. [2020-10-28 00:36:48,644 INFO L78 Accepts]: Start accepts. Automaton has 101170 states and 162804 transitions. Word has length 136 [2020-10-28 00:36:48,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:36:48,645 INFO L481 AbstractCegarLoop]: Abstraction has 101170 states and 162804 transitions. [2020-10-28 00:36:48,645 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:36:48,645 INFO L276 IsEmpty]: Start isEmpty. Operand 101170 states and 162804 transitions. [2020-10-28 00:36:48,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-10-28 00:36:48,647 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:36:48,647 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:36:48,647 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 00:36:48,647 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:36:48,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:36:48,648 INFO L82 PathProgramCache]: Analyzing trace with hash 1032689393, now seen corresponding path program 1 times [2020-10-28 00:36:48,648 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:36:48,648 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [586516375] [2020-10-28 00:36:48,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:36:48,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:36:48,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:48,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:49,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:49,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:49,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:51,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:51,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:51,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:51,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:53,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:36:53,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-28 00:36:53,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-28 00:36:53,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-28 00:36:53,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:36:53,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:36:53,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 99 [2020-10-28 00:36:53,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 00:36:53,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:36:54,334 WARN L193 SmtUtils]: Spent 590.00 ms on a formula simplification that was a NOOP. DAG size: 289 [2020-10-28 00:36:54,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:36:54,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:36:54,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:54,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:36:54,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:36:54,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:36:54,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 00:36:54,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:36:54,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:36:54,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:36:54,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:36:54,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:36:54,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:36:54,380 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [586516375] [2020-10-28 00:36:54,381 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:36:54,381 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:36:54,381 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136488962] [2020-10-28 00:36:54,381 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:36:54,381 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:36:54,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:36:54,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:36:54,382 INFO L87 Difference]: Start difference. First operand 101170 states and 162804 transitions. Second operand 4 states. [2020-10-28 00:36:55,058 WARN L193 SmtUtils]: Spent 630.00 ms on a formula simplification that was a NOOP. DAG size: 293 [2020-10-28 00:37:05,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:37:05,672 INFO L93 Difference]: Finished difference Result 217966 states and 350768 transitions. [2020-10-28 00:37:05,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:37:05,673 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 136 [2020-10-28 00:37:05,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:37:06,079 INFO L225 Difference]: With dead ends: 217966 [2020-10-28 00:37:06,079 INFO L226 Difference]: Without dead ends: 148249 [2020-10-28 00:37:06,151 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:37:06,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148249 states. [2020-10-28 00:37:15,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148249 to 148246. [2020-10-28 00:37:15,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148246 states. [2020-10-28 00:37:15,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148246 states to 148246 states and 237084 transitions. [2020-10-28 00:37:15,530 INFO L78 Accepts]: Start accepts. Automaton has 148246 states and 237084 transitions. Word has length 136 [2020-10-28 00:37:15,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:37:15,531 INFO L481 AbstractCegarLoop]: Abstraction has 148246 states and 237084 transitions. [2020-10-28 00:37:15,531 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:37:15,531 INFO L276 IsEmpty]: Start isEmpty. Operand 148246 states and 237084 transitions. [2020-10-28 00:37:15,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-10-28 00:37:15,532 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:37:15,532 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:37:15,533 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 00:37:15,533 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:37:15,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:37:15,533 INFO L82 PathProgramCache]: Analyzing trace with hash 1065954772, now seen corresponding path program 1 times [2020-10-28 00:37:15,533 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:37:15,534 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [956400123] [2020-10-28 00:37:15,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:37:15,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:37:15,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:15,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:15,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:16,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:16,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:16,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:16,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:17,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:17,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:17,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:20,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:37:20,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-10-28 00:37:20,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-28 00:37:20,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-28 00:37:20,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:37:20,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:37:20,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-28 00:37:20,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-28 00:37:20,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:37:21,486 WARN L193 SmtUtils]: Spent 589.00 ms on a formula simplification that was a NOOP. DAG size: 289 [2020-10-28 00:37:21,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:37:21,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:37:21,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:21,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:37:21,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:37:21,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:37:21,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 00:37:21,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:37:21,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:37:21,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:37:21,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:37:21,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:37:21,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:37:21,545 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [956400123] [2020-10-28 00:37:21,545 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:37:21,545 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:37:21,545 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430053597] [2020-10-28 00:37:21,546 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:37:21,546 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:37:21,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:37:21,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:37:21,546 INFO L87 Difference]: Start difference. First operand 148246 states and 237084 transitions. Second operand 4 states. [2020-10-28 00:37:22,227 WARN L193 SmtUtils]: Spent 632.00 ms on a formula simplification that was a NOOP. DAG size: 293 [2020-10-28 00:37:35,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:37:35,490 INFO L93 Difference]: Finished difference Result 334914 states and 536249 transitions. [2020-10-28 00:37:35,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:37:35,491 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 139 [2020-10-28 00:37:35,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:37:35,835 INFO L225 Difference]: With dead ends: 334914 [2020-10-28 00:37:35,835 INFO L226 Difference]: Without dead ends: 186888 [2020-10-28 00:37:36,104 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:37:36,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186888 states.