./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/systemc/token_ring.13.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/systemc/token_ring.13.cil-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1b2c6a3c4af8091017033117c21d8fbc40cee2009788b890a114045d77587077 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 18:15:52,678 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 18:15:52,680 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 18:15:52,709 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 18:15:52,710 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 18:15:52,711 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 18:15:52,712 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 18:15:52,717 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 18:15:52,718 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 18:15:52,722 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 18:15:52,723 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 18:15:52,724 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 18:15:52,724 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 18:15:52,725 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 18:15:52,726 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 18:15:52,729 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 18:15:52,729 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 18:15:52,730 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 18:15:52,731 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 18:15:52,734 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 18:15:52,736 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 18:15:52,737 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 18:15:52,737 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 18:15:52,738 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 18:15:52,739 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 18:15:52,745 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 18:15:52,746 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 18:15:52,747 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 18:15:52,747 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 18:15:52,748 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 18:15:52,748 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 18:15:52,748 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 18:15:52,749 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 18:15:52,750 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 18:15:52,750 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 18:15:52,751 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 18:15:52,751 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 18:15:52,751 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 18:15:52,752 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 18:15:52,752 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 18:15:52,752 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 18:15:52,753 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 18:15:52,754 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 18:15:52,783 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 18:15:52,784 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 18:15:52,784 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 18:15:52,784 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 18:15:52,785 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 18:15:52,785 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 18:15:52,786 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 18:15:52,786 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 18:15:52,786 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 18:15:52,787 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 18:15:52,787 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 18:15:52,787 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 18:15:52,787 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 18:15:52,787 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 18:15:52,787 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 18:15:52,788 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 18:15:52,788 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 18:15:52,788 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 18:15:52,788 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 18:15:52,788 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 18:15:52,788 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 18:15:52,789 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 18:15:52,789 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 18:15:52,789 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 18:15:52,789 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 18:15:52,789 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 18:15:52,789 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 18:15:52,789 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 18:15:52,790 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 18:15:52,790 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 18:15:52,790 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 18:15:52,790 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 18:15:52,790 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 18:15:52,790 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/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1b2c6a3c4af8091017033117c21d8fbc40cee2009788b890a114045d77587077 [2022-07-13 18:15:53,042 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 18:15:53,068 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 18:15:53,071 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 18:15:53,072 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 18:15:53,073 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 18:15:53,074 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/systemc/token_ring.13.cil-1.c [2022-07-13 18:15:53,123 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4debf6df3/d0980c4506064198b0b8612d53a413e7/FLAGd7e77a01a [2022-07-13 18:15:53,538 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 18:15:53,540 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/systemc/token_ring.13.cil-1.c [2022-07-13 18:15:53,549 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4debf6df3/d0980c4506064198b0b8612d53a413e7/FLAGd7e77a01a [2022-07-13 18:15:53,561 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4debf6df3/d0980c4506064198b0b8612d53a413e7 [2022-07-13 18:15:53,562 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 18:15:53,563 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 18:15:53,565 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 18:15:53,565 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 18:15:53,578 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 18:15:53,578 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 06:15:53" (1/1) ... [2022-07-13 18:15:53,579 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e07f6fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:15:53, skipping insertion in model container [2022-07-13 18:15:53,579 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 06:15:53" (1/1) ... [2022-07-13 18:15:53,584 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 18:15:53,623 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 18:15:53,716 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/systemc/token_ring.13.cil-1.c[671,684] [2022-07-13 18:15:53,820 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 18:15:53,839 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 18:15:53,846 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/systemc/token_ring.13.cil-1.c[671,684] [2022-07-13 18:15:53,925 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 18:15:53,957 INFO L208 MainTranslator]: Completed translation [2022-07-13 18:15:53,957 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:15:53 WrapperNode [2022-07-13 18:15:53,957 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 18:15:53,958 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 18:15:53,958 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 18:15:53,959 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 18:15:53,963 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:15:53" (1/1) ... [2022-07-13 18:15:53,973 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:15:53" (1/1) ... [2022-07-13 18:15:54,003 INFO L137 Inliner]: procedures = 54, calls = 71, calls flagged for inlining = 37, calls inlined = 37, statements flattened = 916 [2022-07-13 18:15:54,003 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 18:15:54,004 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 18:15:54,004 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 18:15:54,004 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 18:15:54,010 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:15:53" (1/1) ... [2022-07-13 18:15:54,014 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:15:53" (1/1) ... [2022-07-13 18:15:54,019 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:15:53" (1/1) ... [2022-07-13 18:15:54,020 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:15:53" (1/1) ... [2022-07-13 18:15:54,029 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:15:53" (1/1) ... [2022-07-13 18:15:54,039 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:15:53" (1/1) ... [2022-07-13 18:15:54,042 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:15:53" (1/1) ... [2022-07-13 18:15:54,047 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 18:15:54,047 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 18:15:54,048 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 18:15:54,048 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 18:15:54,050 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:15:53" (1/1) ... [2022-07-13 18:15:54,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 18:15:54,104 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 18:15:54,122 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-13 18:15:54,150 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-13 18:15:54,168 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 18:15:54,168 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-07-13 18:15:54,168 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-07-13 18:15:54,168 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-07-13 18:15:54,169 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-07-13 18:15:54,169 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-07-13 18:15:54,169 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-07-13 18:15:54,169 INFO L130 BoogieDeclarations]: Found specification of procedure error [2022-07-13 18:15:54,169 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2022-07-13 18:15:54,169 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-07-13 18:15:54,170 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-07-13 18:15:54,170 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-07-13 18:15:54,170 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-07-13 18:15:54,170 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-07-13 18:15:54,170 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-07-13 18:15:54,170 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 18:15:54,170 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 18:15:54,170 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 18:15:54,283 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 18:15:54,284 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 18:15:54,723 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 18:15:54,761 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 18:15:54,761 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2022-07-13 18:15:54,764 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 06:15:54 BoogieIcfgContainer [2022-07-13 18:15:54,764 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 18:15:54,766 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 18:15:54,766 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 18:15:54,768 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 18:15:54,769 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 06:15:53" (1/3) ... [2022-07-13 18:15:54,769 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ffb5444 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 06:15:54, skipping insertion in model container [2022-07-13 18:15:54,770 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:15:53" (2/3) ... [2022-07-13 18:15:54,770 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ffb5444 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 06:15:54, skipping insertion in model container [2022-07-13 18:15:54,771 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 06:15:54" (3/3) ... [2022-07-13 18:15:54,773 INFO L111 eAbstractionObserver]: Analyzing ICFG token_ring.13.cil-1.c [2022-07-13 18:15:54,784 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 18:15:54,784 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 18:15:54,854 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 18:15:54,860 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@3c1f4975, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@14b2a4fc [2022-07-13 18:15:54,861 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-13 18:15:54,871 INFO L276 IsEmpty]: Start isEmpty. Operand has 415 states, 377 states have (on average 1.6710875331564987) internal successors, (630), 381 states have internal predecessors, (630), 29 states have call successors, (29), 7 states have call predecessors, (29), 7 states have return successors, (29), 28 states have call predecessors, (29), 29 states have call successors, (29) [2022-07-13 18:15:54,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-07-13 18:15:54,898 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:15:54,899 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:15:54,900 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:15:54,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:15:54,905 INFO L85 PathProgramCache]: Analyzing trace with hash -1613183498, now seen corresponding path program 1 times [2022-07-13 18:15:54,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:15:54,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109229071] [2022-07-13 18:15:54,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:15:54,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:15:55,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:15:55,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:15:55,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:15:55,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-13 18:15:55,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:15:55,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-13 18:15:55,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:15:55,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-07-13 18:15:55,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:15:55,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-07-13 18:15:55,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:15:55,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:15:55,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:15:55,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109229071] [2022-07-13 18:15:55,317 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109229071] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:15:55,317 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:15:55,317 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 18:15:55,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309120315] [2022-07-13 18:15:55,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:15:55,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 18:15:55,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:15:55,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 18:15:55,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 18:15:55,349 INFO L87 Difference]: Start difference. First operand has 415 states, 377 states have (on average 1.6710875331564987) internal successors, (630), 381 states have internal predecessors, (630), 29 states have call successors, (29), 7 states have call predecessors, (29), 7 states have return successors, (29), 28 states have call predecessors, (29), 29 states have call successors, (29) Second operand has 5 states, 5 states have (on average 35.6) internal successors, (178), 3 states have internal predecessors, (178), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 18:15:56,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:15:56,693 INFO L93 Difference]: Finished difference Result 969 states and 1619 transitions. [2022-07-13 18:15:56,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 18:15:56,698 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.6) internal successors, (178), 3 states have internal predecessors, (178), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2022-07-13 18:15:56,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:15:56,709 INFO L225 Difference]: With dead ends: 969 [2022-07-13 18:15:56,709 INFO L226 Difference]: Without dead ends: 562 [2022-07-13 18:15:56,713 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-13 18:15:56,715 INFO L413 NwaCegarLoop]: 718 mSDtfsCounter, 1117 mSDsluCounter, 441 mSDsCounter, 0 mSdLazyCounter, 776 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1142 SdHoareTripleChecker+Valid, 1159 SdHoareTripleChecker+Invalid, 842 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 776 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-13 18:15:56,716 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1142 Valid, 1159 Invalid, 842 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 776 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-13 18:15:56,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2022-07-13 18:15:56,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 409. [2022-07-13 18:15:56,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 409 states, 373 states have (on average 1.584450402144772) internal successors, (591), 375 states have internal predecessors, (591), 29 states have call successors, (29), 7 states have call predecessors, (29), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2022-07-13 18:15:56,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 647 transitions. [2022-07-13 18:15:56,778 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 647 transitions. Word has length 189 [2022-07-13 18:15:56,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:15:56,778 INFO L495 AbstractCegarLoop]: Abstraction has 409 states and 647 transitions. [2022-07-13 18:15:56,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.6) internal successors, (178), 3 states have internal predecessors, (178), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 18:15:56,779 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 647 transitions. [2022-07-13 18:15:56,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-07-13 18:15:56,781 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:15:56,782 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:15:56,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 18:15:56,782 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:15:56,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:15:56,783 INFO L85 PathProgramCache]: Analyzing trace with hash 2076009016, now seen corresponding path program 1 times [2022-07-13 18:15:56,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:15:56,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007645978] [2022-07-13 18:15:56,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:15:56,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:15:56,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:15:56,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:15:56,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:15:56,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-13 18:15:56,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:15:56,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-13 18:15:56,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:15:56,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-07-13 18:15:56,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:15:56,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-07-13 18:15:56,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:15:56,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:15:56,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:15:56,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007645978] [2022-07-13 18:15:56,970 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007645978] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:15:56,970 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:15:56,970 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 18:15:56,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497443750] [2022-07-13 18:15:56,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:15:56,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 18:15:56,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:15:56,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 18:15:56,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-13 18:15:56,973 INFO L87 Difference]: Start difference. First operand 409 states and 647 transitions. Second operand has 6 states, 6 states have (on average 29.666666666666668) internal successors, (178), 4 states have internal predecessors, (178), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 18:15:59,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:15:59,556 INFO L93 Difference]: Finished difference Result 1511 states and 2438 transitions. [2022-07-13 18:15:59,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 18:15:59,557 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 29.666666666666668) internal successors, (178), 4 states have internal predecessors, (178), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2022-07-13 18:15:59,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:15:59,562 INFO L225 Difference]: With dead ends: 1511 [2022-07-13 18:15:59,562 INFO L226 Difference]: Without dead ends: 1123 [2022-07-13 18:15:59,563 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-07-13 18:15:59,564 INFO L413 NwaCegarLoop]: 770 mSDtfsCounter, 1684 mSDsluCounter, 1045 mSDsCounter, 0 mSdLazyCounter, 2165 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1704 SdHoareTripleChecker+Valid, 1815 SdHoareTripleChecker+Invalid, 2293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 2165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-13 18:15:59,565 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1704 Valid, 1815 Invalid, 2293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 2165 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-13 18:15:59,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1123 states. [2022-07-13 18:15:59,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1123 to 816. [2022-07-13 18:15:59,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 816 states, 751 states have (on average 1.5952063914780292) internal successors, (1198), 754 states have internal predecessors, (1198), 51 states have call successors, (51), 13 states have call predecessors, (51), 13 states have return successors, (52), 49 states have call predecessors, (52), 49 states have call successors, (52) [2022-07-13 18:15:59,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 816 states to 816 states and 1301 transitions. [2022-07-13 18:15:59,618 INFO L78 Accepts]: Start accepts. Automaton has 816 states and 1301 transitions. Word has length 189 [2022-07-13 18:15:59,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:15:59,618 INFO L495 AbstractCegarLoop]: Abstraction has 816 states and 1301 transitions. [2022-07-13 18:15:59,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 29.666666666666668) internal successors, (178), 4 states have internal predecessors, (178), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 18:15:59,619 INFO L276 IsEmpty]: Start isEmpty. Operand 816 states and 1301 transitions. [2022-07-13 18:15:59,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-07-13 18:15:59,620 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:15:59,620 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:15:59,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 18:15:59,621 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:15:59,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:15:59,621 INFO L85 PathProgramCache]: Analyzing trace with hash 228982580, now seen corresponding path program 1 times [2022-07-13 18:15:59,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:15:59,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030154870] [2022-07-13 18:15:59,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:15:59,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:15:59,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:15:59,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:15:59,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:15:59,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-13 18:15:59,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:15:59,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-13 18:15:59,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:15:59,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-07-13 18:15:59,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:15:59,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-07-13 18:15:59,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:15:59,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:15:59,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:15:59,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030154870] [2022-07-13 18:15:59,789 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030154870] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:15:59,789 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:15:59,789 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 18:15:59,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596880696] [2022-07-13 18:15:59,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:15:59,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 18:15:59,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:15:59,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 18:15:59,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 18:15:59,791 INFO L87 Difference]: Start difference. First operand 816 states and 1301 transitions. Second operand has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 18:16:02,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:16:02,916 INFO L93 Difference]: Finished difference Result 2499 states and 4041 transitions. [2022-07-13 18:16:02,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 18:16:02,917 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2022-07-13 18:16:02,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:16:02,925 INFO L225 Difference]: With dead ends: 2499 [2022-07-13 18:16:02,926 INFO L226 Difference]: Without dead ends: 1704 [2022-07-13 18:16:02,928 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-13 18:16:02,933 INFO L413 NwaCegarLoop]: 1103 mSDtfsCounter, 1720 mSDsluCounter, 2083 mSDsCounter, 0 mSdLazyCounter, 3367 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1740 SdHoareTripleChecker+Valid, 3186 SdHoareTripleChecker+Invalid, 3453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 3367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-13 18:16:02,934 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1740 Valid, 3186 Invalid, 3453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 3367 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-13 18:16:02,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1704 states. [2022-07-13 18:16:03,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1704 to 1194. [2022-07-13 18:16:03,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1194 states, 1100 states have (on average 1.5881818181818181) internal successors, (1747), 1104 states have internal predecessors, (1747), 73 states have call successors, (73), 19 states have call predecessors, (73), 20 states have return successors, (76), 72 states have call predecessors, (76), 71 states have call successors, (76) [2022-07-13 18:16:03,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1194 states to 1194 states and 1896 transitions. [2022-07-13 18:16:03,016 INFO L78 Accepts]: Start accepts. Automaton has 1194 states and 1896 transitions. Word has length 189 [2022-07-13 18:16:03,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:16:03,016 INFO L495 AbstractCegarLoop]: Abstraction has 1194 states and 1896 transitions. [2022-07-13 18:16:03,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 18:16:03,017 INFO L276 IsEmpty]: Start isEmpty. Operand 1194 states and 1896 transitions. [2022-07-13 18:16:03,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-07-13 18:16:03,018 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:16:03,018 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:16:03,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 18:16:03,019 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:16:03,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:16:03,020 INFO L85 PathProgramCache]: Analyzing trace with hash -1694267850, now seen corresponding path program 1 times [2022-07-13 18:16:03,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:16:03,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934389303] [2022-07-13 18:16:03,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:16:03,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:16:03,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:16:03,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:16:03,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:16:03,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-13 18:16:03,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:16:03,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-13 18:16:03,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:16:03,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-07-13 18:16:03,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:16:03,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-07-13 18:16:03,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:16:03,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:16:03,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:16:03,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934389303] [2022-07-13 18:16:03,165 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934389303] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:16:03,165 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:16:03,165 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 18:16:03,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510501282] [2022-07-13 18:16:03,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:16:03,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 18:16:03,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:16:03,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 18:16:03,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 18:16:03,168 INFO L87 Difference]: Start difference. First operand 1194 states and 1896 transitions. Second operand has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 18:16:06,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:16:06,171 INFO L93 Difference]: Finished difference Result 3955 states and 6384 transitions. [2022-07-13 18:16:06,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 18:16:06,172 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2022-07-13 18:16:06,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:16:06,183 INFO L225 Difference]: With dead ends: 3955 [2022-07-13 18:16:06,184 INFO L226 Difference]: Without dead ends: 2782 [2022-07-13 18:16:06,188 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-13 18:16:06,196 INFO L413 NwaCegarLoop]: 1091 mSDtfsCounter, 1714 mSDsluCounter, 2083 mSDsCounter, 0 mSdLazyCounter, 3356 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1734 SdHoareTripleChecker+Valid, 3174 SdHoareTripleChecker+Invalid, 3444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 3356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-13 18:16:06,198 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1734 Valid, 3174 Invalid, 3444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 3356 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-07-13 18:16:06,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2782 states. [2022-07-13 18:16:06,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2782 to 1954. [2022-07-13 18:16:06,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1954 states, 1802 states have (on average 1.5826859045504995) internal successors, (2852), 1808 states have internal predecessors, (2852), 117 states have call successors, (117), 31 states have call predecessors, (117), 34 states have return successors, (128), 118 states have call predecessors, (128), 115 states have call successors, (128) [2022-07-13 18:16:06,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1954 states to 1954 states and 3097 transitions. [2022-07-13 18:16:06,315 INFO L78 Accepts]: Start accepts. Automaton has 1954 states and 3097 transitions. Word has length 189 [2022-07-13 18:16:06,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:16:06,315 INFO L495 AbstractCegarLoop]: Abstraction has 1954 states and 3097 transitions. [2022-07-13 18:16:06,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 18:16:06,319 INFO L276 IsEmpty]: Start isEmpty. Operand 1954 states and 3097 transitions. [2022-07-13 18:16:06,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-07-13 18:16:06,321 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:16:06,321 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:16:06,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-13 18:16:06,322 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:16:06,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:16:06,323 INFO L85 PathProgramCache]: Analyzing trace with hash -1195711048, now seen corresponding path program 1 times [2022-07-13 18:16:06,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:16:06,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391464023] [2022-07-13 18:16:06,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:16:06,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:16:06,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:16:06,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:16:06,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:16:06,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-13 18:16:06,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:16:06,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-13 18:16:06,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:16:06,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-07-13 18:16:06,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:16:06,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-07-13 18:16:06,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:16:06,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:16:06,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:16:06,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391464023] [2022-07-13 18:16:06,481 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391464023] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:16:06,481 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:16:06,481 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 18:16:06,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457184459] [2022-07-13 18:16:06,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:16:06,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 18:16:06,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:16:06,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 18:16:06,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 18:16:06,483 INFO L87 Difference]: Start difference. First operand 1954 states and 3097 transitions. Second operand has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 18:16:09,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:16:09,679 INFO L93 Difference]: Finished difference Result 6761 states and 10869 transitions. [2022-07-13 18:16:09,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 18:16:09,680 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2022-07-13 18:16:09,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:16:09,700 INFO L225 Difference]: With dead ends: 6761 [2022-07-13 18:16:09,700 INFO L226 Difference]: Without dead ends: 4828 [2022-07-13 18:16:09,704 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-13 18:16:09,705 INFO L413 NwaCegarLoop]: 1086 mSDtfsCounter, 1713 mSDsluCounter, 2083 mSDsCounter, 0 mSdLazyCounter, 3348 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1733 SdHoareTripleChecker+Valid, 3169 SdHoareTripleChecker+Invalid, 3436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 3348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-13 18:16:09,705 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1733 Valid, 3169 Invalid, 3436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 3348 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-13 18:16:09,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4828 states. [2022-07-13 18:16:09,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4828 to 3475. [2022-07-13 18:16:09,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3475 states, 3207 states have (on average 1.5784222014343623) internal successors, (5062), 3217 states have internal predecessors, (5062), 205 states have call successors, (205), 55 states have call predecessors, (205), 62 states have return successors, (238), 210 states have call predecessors, (238), 203 states have call successors, (238) [2022-07-13 18:16:09,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3475 states to 3475 states and 5505 transitions. [2022-07-13 18:16:09,885 INFO L78 Accepts]: Start accepts. Automaton has 3475 states and 5505 transitions. Word has length 189 [2022-07-13 18:16:09,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:16:09,885 INFO L495 AbstractCegarLoop]: Abstraction has 3475 states and 5505 transitions. [2022-07-13 18:16:09,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 18:16:09,885 INFO L276 IsEmpty]: Start isEmpty. Operand 3475 states and 5505 transitions. [2022-07-13 18:16:09,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-07-13 18:16:09,887 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:16:09,888 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:16:09,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-13 18:16:09,888 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:16:09,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:16:09,889 INFO L85 PathProgramCache]: Analyzing trace with hash -625439242, now seen corresponding path program 1 times [2022-07-13 18:16:09,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:16:09,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808656200] [2022-07-13 18:16:09,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:16:09,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:16:09,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:16:09,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:16:09,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:16:09,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-13 18:16:09,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:16:10,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-13 18:16:10,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:16:10,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-07-13 18:16:10,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:16:10,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-07-13 18:16:10,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:16:10,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:16:10,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:16:10,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808656200] [2022-07-13 18:16:10,043 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808656200] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:16:10,043 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:16:10,043 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 18:16:10,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260800035] [2022-07-13 18:16:10,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:16:10,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 18:16:10,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:16:10,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 18:16:10,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 18:16:10,045 INFO L87 Difference]: Start difference. First operand 3475 states and 5505 transitions. Second operand has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 18:16:13,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:16:13,484 INFO L93 Difference]: Finished difference Result 12372 states and 19855 transitions. [2022-07-13 18:16:13,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 18:16:13,485 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2022-07-13 18:16:13,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:16:13,553 INFO L225 Difference]: With dead ends: 12372 [2022-07-13 18:16:13,553 INFO L226 Difference]: Without dead ends: 8918 [2022-07-13 18:16:13,563 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-13 18:16:13,565 INFO L413 NwaCegarLoop]: 1081 mSDtfsCounter, 1712 mSDsluCounter, 2083 mSDsCounter, 0 mSdLazyCounter, 3340 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1732 SdHoareTripleChecker+Valid, 3164 SdHoareTripleChecker+Invalid, 3428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 3340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-13 18:16:13,565 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1732 Valid, 3164 Invalid, 3428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 3340 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-13 18:16:13,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8918 states. [2022-07-13 18:16:13,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8918 to 6524. [2022-07-13 18:16:13,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6524 states, 6024 states have (on average 1.5756972111553784) internal successors, (9492), 6042 states have internal predecessors, (9492), 381 states have call successors, (381), 103 states have call predecessors, (381), 118 states have return successors, (476), 394 states have call predecessors, (476), 379 states have call successors, (476) [2022-07-13 18:16:13,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6524 states to 6524 states and 10349 transitions. [2022-07-13 18:16:13,933 INFO L78 Accepts]: Start accepts. Automaton has 6524 states and 10349 transitions. Word has length 189 [2022-07-13 18:16:13,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:16:13,934 INFO L495 AbstractCegarLoop]: Abstraction has 6524 states and 10349 transitions. [2022-07-13 18:16:13,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 18:16:13,934 INFO L276 IsEmpty]: Start isEmpty. Operand 6524 states and 10349 transitions. [2022-07-13 18:16:13,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-07-13 18:16:13,937 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:16:13,938 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:16:13,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-13 18:16:13,938 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:16:13,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:16:13,938 INFO L85 PathProgramCache]: Analyzing trace with hash 778429944, now seen corresponding path program 1 times [2022-07-13 18:16:13,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:16:13,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485390172] [2022-07-13 18:16:13,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:16:13,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:16:13,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:16:13,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:16:13,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:16:14,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-13 18:16:14,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:16:14,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-13 18:16:14,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:16:14,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-07-13 18:16:14,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:16:14,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-07-13 18:16:14,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:16:14,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:16:14,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:16:14,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485390172] [2022-07-13 18:16:14,071 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485390172] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:16:14,072 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:16:14,072 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 18:16:14,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443449256] [2022-07-13 18:16:14,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:16:14,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 18:16:14,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:16:14,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 18:16:14,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 18:16:14,073 INFO L87 Difference]: Start difference. First operand 6524 states and 10349 transitions. Second operand has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 18:16:17,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:16:17,988 INFO L93 Difference]: Finished difference Result 23595 states and 37889 transitions. [2022-07-13 18:16:17,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 18:16:17,989 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2022-07-13 18:16:17,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:16:18,060 INFO L225 Difference]: With dead ends: 23595 [2022-07-13 18:16:18,060 INFO L226 Difference]: Without dead ends: 17092 [2022-07-13 18:16:18,082 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-13 18:16:18,083 INFO L413 NwaCegarLoop]: 805 mSDtfsCounter, 1823 mSDsluCounter, 1363 mSDsCounter, 0 mSdLazyCounter, 2965 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1843 SdHoareTripleChecker+Valid, 2168 SdHoareTripleChecker+Invalid, 3095 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 2965 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-13 18:16:18,084 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1843 Valid, 2168 Invalid, 3095 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 2965 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-07-13 18:16:18,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17092 states. [2022-07-13 18:16:18,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17092 to 12637. [2022-07-13 18:16:18,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12637 states, 11673 states have (on average 1.5740597961106828) internal successors, (18374), 11707 states have internal predecessors, (18374), 733 states have call successors, (733), 199 states have call predecessors, (733), 230 states have return successors, (1006), 762 states have call predecessors, (1006), 731 states have call successors, (1006) [2022-07-13 18:16:18,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12637 states to 12637 states and 20113 transitions. [2022-07-13 18:16:18,885 INFO L78 Accepts]: Start accepts. Automaton has 12637 states and 20113 transitions. Word has length 189 [2022-07-13 18:16:18,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:16:18,886 INFO L495 AbstractCegarLoop]: Abstraction has 12637 states and 20113 transitions. [2022-07-13 18:16:18,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 18:16:18,887 INFO L276 IsEmpty]: Start isEmpty. Operand 12637 states and 20113 transitions. [2022-07-13 18:16:18,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-07-13 18:16:18,894 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:16:18,894 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:16:18,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-13 18:16:18,894 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:16:18,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:16:18,895 INFO L85 PathProgramCache]: Analyzing trace with hash -7567946, now seen corresponding path program 1 times [2022-07-13 18:16:18,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:16:18,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951608382] [2022-07-13 18:16:18,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:16:18,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:16:18,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:16:18,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:16:18,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:16:18,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-13 18:16:18,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:16:19,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-13 18:16:19,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:16:19,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-07-13 18:16:19,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:16:19,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-07-13 18:16:19,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:16:19,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:16:19,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:16:19,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951608382] [2022-07-13 18:16:19,020 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951608382] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:16:19,020 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:16:19,020 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 18:16:19,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115714006] [2022-07-13 18:16:19,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:16:19,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 18:16:19,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:16:19,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 18:16:19,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 18:16:19,022 INFO L87 Difference]: Start difference. First operand 12637 states and 20113 transitions. Second operand has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 18:16:24,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:16:24,191 INFO L93 Difference]: Finished difference Result 46042 states and 74151 transitions. [2022-07-13 18:16:24,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 18:16:24,191 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2022-07-13 18:16:24,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:16:24,292 INFO L225 Difference]: With dead ends: 46042 [2022-07-13 18:16:24,293 INFO L226 Difference]: Without dead ends: 33426 [2022-07-13 18:16:24,335 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-13 18:16:24,335 INFO L413 NwaCegarLoop]: 1071 mSDtfsCounter, 1710 mSDsluCounter, 2083 mSDsCounter, 0 mSdLazyCounter, 3324 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1730 SdHoareTripleChecker+Valid, 3154 SdHoareTripleChecker+Invalid, 3412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 3324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-13 18:16:24,336 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1730 Valid, 3154 Invalid, 3412 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 3324 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-13 18:16:24,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33426 states. [2022-07-13 18:16:26,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33426 to 24894. [2022-07-13 18:16:26,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24894 states, 23002 states have (on average 1.5730806016868097) internal successors, (36184), 23068 states have internal predecessors, (36184), 1437 states have call successors, (1437), 391 states have call predecessors, (1437), 454 states have return successors, (2228), 1498 states have call predecessors, (2228), 1435 states have call successors, (2228) [2022-07-13 18:16:26,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24894 states to 24894 states and 39849 transitions. [2022-07-13 18:16:26,129 INFO L78 Accepts]: Start accepts. Automaton has 24894 states and 39849 transitions. Word has length 189 [2022-07-13 18:16:26,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:16:26,130 INFO L495 AbstractCegarLoop]: Abstraction has 24894 states and 39849 transitions. [2022-07-13 18:16:26,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 18:16:26,130 INFO L276 IsEmpty]: Start isEmpty. Operand 24894 states and 39849 transitions. [2022-07-13 18:16:26,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-07-13 18:16:26,144 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:16:26,144 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:16:26,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-13 18:16:26,144 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:16:26,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:16:26,145 INFO L85 PathProgramCache]: Analyzing trace with hash 659813944, now seen corresponding path program 1 times [2022-07-13 18:16:26,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:16:26,145 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268646069] [2022-07-13 18:16:26,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:16:26,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:16:26,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:16:26,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:16:26,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:16:26,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-13 18:16:26,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:16:26,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-13 18:16:26,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:16:26,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-07-13 18:16:26,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:16:26,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-07-13 18:16:26,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:16:26,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:16:26,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:16:26,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268646069] [2022-07-13 18:16:26,272 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268646069] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:16:26,272 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:16:26,272 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 18:16:26,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357092232] [2022-07-13 18:16:26,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:16:26,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 18:16:26,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:16:26,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 18:16:26,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 18:16:26,274 INFO L87 Difference]: Start difference. First operand 24894 states and 39849 transitions. Second operand has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 18:16:33,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:16:33,788 INFO L93 Difference]: Finished difference Result 90937 states and 147277 transitions. [2022-07-13 18:16:33,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 18:16:33,790 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2022-07-13 18:16:33,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:16:34,172 INFO L225 Difference]: With dead ends: 90937 [2022-07-13 18:16:34,173 INFO L226 Difference]: Without dead ends: 66064 [2022-07-13 18:16:34,231 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-13 18:16:34,233 INFO L413 NwaCegarLoop]: 1066 mSDtfsCounter, 1709 mSDsluCounter, 2083 mSDsCounter, 0 mSdLazyCounter, 3316 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1729 SdHoareTripleChecker+Valid, 3149 SdHoareTripleChecker+Invalid, 3404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 3316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-13 18:16:34,234 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1729 Valid, 3149 Invalid, 3404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 3316 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-13 18:16:34,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66064 states. [2022-07-13 18:16:37,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66064 to 49471. [2022-07-13 18:16:37,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49471 states, 45723 states have (on average 1.5724689980972377) internal successors, (71898), 45853 states have internal predecessors, (71898), 2845 states have call successors, (2845), 775 states have call predecessors, (2845), 902 states have return successors, (5158), 2970 states have call predecessors, (5158), 2843 states have call successors, (5158) [2022-07-13 18:16:37,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49471 states to 49471 states and 79901 transitions. [2022-07-13 18:16:37,511 INFO L78 Accepts]: Start accepts. Automaton has 49471 states and 79901 transitions. Word has length 189 [2022-07-13 18:16:37,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:16:37,512 INFO L495 AbstractCegarLoop]: Abstraction has 49471 states and 79901 transitions. [2022-07-13 18:16:37,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 18:16:37,512 INFO L276 IsEmpty]: Start isEmpty. Operand 49471 states and 79901 transitions. [2022-07-13 18:16:37,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-07-13 18:16:37,536 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:16:37,536 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:16:37,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-13 18:16:37,536 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:16:37,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:16:37,537 INFO L85 PathProgramCache]: Analyzing trace with hash -1535414922, now seen corresponding path program 1 times [2022-07-13 18:16:37,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:16:37,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053334218] [2022-07-13 18:16:37,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:16:37,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:16:37,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:16:37,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:16:37,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:16:37,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-13 18:16:37,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:16:37,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-13 18:16:37,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:16:37,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-07-13 18:16:37,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:16:37,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-07-13 18:16:37,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:16:37,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:16:37,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:16:37,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053334218] [2022-07-13 18:16:37,822 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053334218] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:16:37,822 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:16:37,822 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 18:16:37,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377068437] [2022-07-13 18:16:37,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:16:37,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 18:16:37,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:16:37,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 18:16:37,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-13 18:16:37,823 INFO L87 Difference]: Start difference. First operand 49471 states and 79901 transitions. Second operand has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 18:16:44,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:16:44,140 INFO L93 Difference]: Finished difference Result 116675 states and 191656 transitions. [2022-07-13 18:16:44,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 18:16:44,141 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2022-07-13 18:16:44,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:16:44,546 INFO L225 Difference]: With dead ends: 116675 [2022-07-13 18:16:44,546 INFO L226 Difference]: Without dead ends: 67225 [2022-07-13 18:16:44,632 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-13 18:16:44,632 INFO L413 NwaCegarLoop]: 684 mSDtfsCounter, 1223 mSDsluCounter, 1031 mSDsCounter, 0 mSdLazyCounter, 1572 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1244 SdHoareTripleChecker+Valid, 1715 SdHoareTripleChecker+Invalid, 1666 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 1572 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-13 18:16:44,633 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1244 Valid, 1715 Invalid, 1666 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 1572 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-13 18:16:44,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67225 states. [2022-07-13 18:16:47,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67225 to 49471. [2022-07-13 18:16:47,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49471 states, 45723 states have (on average 1.5696476609146381) internal successors, (71769), 45853 states have internal predecessors, (71769), 2845 states have call successors, (2845), 775 states have call predecessors, (2845), 902 states have return successors, (5158), 2970 states have call predecessors, (5158), 2843 states have call successors, (5158) [2022-07-13 18:16:48,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49471 states to 49471 states and 79772 transitions. [2022-07-13 18:16:48,158 INFO L78 Accepts]: Start accepts. Automaton has 49471 states and 79772 transitions. Word has length 189 [2022-07-13 18:16:48,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:16:48,159 INFO L495 AbstractCegarLoop]: Abstraction has 49471 states and 79772 transitions. [2022-07-13 18:16:48,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 18:16:48,159 INFO L276 IsEmpty]: Start isEmpty. Operand 49471 states and 79772 transitions. [2022-07-13 18:16:48,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-07-13 18:16:48,195 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:16:48,195 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:16:48,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-13 18:16:48,196 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:16:48,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:16:48,196 INFO L85 PathProgramCache]: Analyzing trace with hash -1190586760, now seen corresponding path program 1 times [2022-07-13 18:16:48,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:16:48,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660705644] [2022-07-13 18:16:48,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:16:48,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:16:48,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:16:48,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:16:48,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:16:48,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-13 18:16:48,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:16:48,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-13 18:16:48,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:16:48,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-07-13 18:16:48,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:16:48,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-07-13 18:16:48,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:16:48,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:16:48,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:16:48,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660705644] [2022-07-13 18:16:48,459 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660705644] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:16:48,459 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:16:48,459 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 18:16:48,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958883489] [2022-07-13 18:16:48,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:16:48,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 18:16:48,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:16:48,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 18:16:48,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 18:16:48,461 INFO L87 Difference]: Start difference. First operand 49471 states and 79772 transitions. Second operand has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 18:17:01,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:17:01,376 INFO L93 Difference]: Finished difference Result 180468 states and 294215 transitions. [2022-07-13 18:17:01,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 18:17:01,377 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2022-07-13 18:17:01,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:17:01,918 INFO L225 Difference]: With dead ends: 180468 [2022-07-13 18:17:01,918 INFO L226 Difference]: Without dead ends: 131018 [2022-07-13 18:17:02,081 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-13 18:17:02,088 INFO L413 NwaCegarLoop]: 1049 mSDtfsCounter, 1700 mSDsluCounter, 2083 mSDsCounter, 0 mSdLazyCounter, 3276 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1720 SdHoareTripleChecker+Valid, 3132 SdHoareTripleChecker+Invalid, 3367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 3276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-13 18:17:02,089 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1720 Valid, 3132 Invalid, 3367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 3276 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-07-13 18:17:02,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131018 states. [2022-07-13 18:17:09,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131018 to 99010. [2022-07-13 18:17:09,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99010 states, 91550 states have (on average 1.5690551611141452) internal successors, (143647), 91808 states have internal predecessors, (143647), 5661 states have call successors, (5661), 1543 states have call predecessors, (5661), 1798 states have return successors, (12476), 5914 states have call predecessors, (12476), 5659 states have call successors, (12476) [2022-07-13 18:17:10,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99010 states to 99010 states and 161784 transitions. [2022-07-13 18:17:10,539 INFO L78 Accepts]: Start accepts. Automaton has 99010 states and 161784 transitions. Word has length 189 [2022-07-13 18:17:10,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:17:10,539 INFO L495 AbstractCegarLoop]: Abstraction has 99010 states and 161784 transitions. [2022-07-13 18:17:10,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 18:17:10,539 INFO L276 IsEmpty]: Start isEmpty. Operand 99010 states and 161784 transitions. [2022-07-13 18:17:10,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-07-13 18:17:10,585 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:17:10,585 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:17:10,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-13 18:17:10,585 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:17:10,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:17:10,586 INFO L85 PathProgramCache]: Analyzing trace with hash 1334908922, now seen corresponding path program 1 times [2022-07-13 18:17:10,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:17:10,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59979195] [2022-07-13 18:17:10,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:17:10,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:17:10,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:17:10,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:17:10,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:17:10,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-13 18:17:10,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:17:10,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-13 18:17:10,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:17:10,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-07-13 18:17:10,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:17:10,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-07-13 18:17:10,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:17:10,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:17:10,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:17:10,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59979195] [2022-07-13 18:17:10,709 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59979195] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:17:10,709 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:17:10,709 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 18:17:10,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499159248] [2022-07-13 18:17:10,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:17:10,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 18:17:10,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:17:10,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 18:17:10,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 18:17:10,711 INFO L87 Difference]: Start difference. First operand 99010 states and 161784 transitions. Second operand has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)