./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/systemc/token_ring.09.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 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.09.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 834ccc2d6e5ce947bfece9c1e11f57131346eaac8927553a9495d7568350ac6e --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 05:15:32,861 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 05:15:32,863 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 05:15:32,904 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 05:15:32,905 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 05:15:32,906 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 05:15:32,911 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 05:15:32,914 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 05:15:32,915 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 05:15:32,919 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 05:15:32,921 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 05:15:32,925 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 05:15:32,925 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 05:15:32,927 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 05:15:32,928 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 05:15:32,929 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 05:15:32,930 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 05:15:32,932 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 05:15:32,935 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 05:15:32,940 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 05:15:32,941 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 05:15:32,943 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 05:15:32,944 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 05:15:32,945 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 05:15:32,946 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 05:15:32,953 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 05:15:32,953 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 05:15:32,954 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 05:15:32,955 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 05:15:32,955 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 05:15:32,956 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 05:15:32,956 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 05:15:32,958 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 05:15:32,959 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 05:15:32,960 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 05:15:32,961 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 05:15:32,961 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 05:15:32,961 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 05:15:32,962 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 05:15:32,962 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 05:15:32,962 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 05:15:32,964 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 05:15:32,967 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 05:15:32,994 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 05:15:32,994 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 05:15:32,995 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 05:15:32,995 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 05:15:32,996 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 05:15:32,996 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 05:15:32,997 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 05:15:32,997 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 05:15:32,997 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 05:15:32,998 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 05:15:32,998 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 05:15:32,998 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 05:15:32,998 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 05:15:32,999 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 05:15:32,999 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 05:15:32,999 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 05:15:32,999 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 05:15:32,999 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 05:15:33,000 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 05:15:33,000 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 05:15:33,000 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 05:15:33,001 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 05:15:33,001 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 05:15:33,001 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 05:15:33,001 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 05:15:33,001 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 05:15:33,002 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 05:15:33,002 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 05:15:33,002 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 05:15:33,002 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 05:15:33,002 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 05:15:33,003 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 05:15:33,003 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 05:15:33,003 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 834ccc2d6e5ce947bfece9c1e11f57131346eaac8927553a9495d7568350ac6e [2022-07-21 05:15:33,360 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 05:15:33,378 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 05:15:33,381 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 05:15:33,382 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 05:15:33,387 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 05:15:33,389 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/systemc/token_ring.09.cil-1.c [2022-07-21 05:15:33,442 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/919c873d6/dac6382f5ab84ccfa0f55aa39a7cca1b/FLAG0dfcc03af [2022-07-21 05:15:33,959 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 05:15:33,960 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/systemc/token_ring.09.cil-1.c [2022-07-21 05:15:33,974 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/919c873d6/dac6382f5ab84ccfa0f55aa39a7cca1b/FLAG0dfcc03af [2022-07-21 05:15:34,465 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/919c873d6/dac6382f5ab84ccfa0f55aa39a7cca1b [2022-07-21 05:15:34,467 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 05:15:34,468 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 05:15:34,469 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 05:15:34,469 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 05:15:34,474 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 05:15:34,475 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 05:15:34" (1/1) ... [2022-07-21 05:15:34,476 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d23d94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:15:34, skipping insertion in model container [2022-07-21 05:15:34,476 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 05:15:34" (1/1) ... [2022-07-21 05:15:34,484 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 05:15:34,525 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 05:15:34,625 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.09.cil-1.c[671,684] [2022-07-21 05:15:34,745 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 05:15:34,753 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 05:15:34,763 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.09.cil-1.c[671,684] [2022-07-21 05:15:34,828 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 05:15:34,847 INFO L208 MainTranslator]: Completed translation [2022-07-21 05:15:34,848 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:15:34 WrapperNode [2022-07-21 05:15:34,848 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 05:15:34,849 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 05:15:34,849 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 05:15:34,849 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 05:15:34,857 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:15:34" (1/1) ... [2022-07-21 05:15:34,875 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:15:34" (1/1) ... [2022-07-21 05:15:34,915 INFO L137 Inliner]: procedures = 46, calls = 58, calls flagged for inlining = 30, calls inlined = 30, statements flattened = 679 [2022-07-21 05:15:34,915 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 05:15:34,916 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 05:15:34,916 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 05:15:34,916 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 05:15:34,924 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:15:34" (1/1) ... [2022-07-21 05:15:34,924 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:15:34" (1/1) ... [2022-07-21 05:15:34,928 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:15:34" (1/1) ... [2022-07-21 05:15:34,928 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:15:34" (1/1) ... [2022-07-21 05:15:34,938 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:15:34" (1/1) ... [2022-07-21 05:15:34,949 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:15:34" (1/1) ... [2022-07-21 05:15:34,957 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:15:34" (1/1) ... [2022-07-21 05:15:34,961 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 05:15:34,962 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 05:15:34,963 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 05:15:34,963 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 05:15:34,963 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:15:34" (1/1) ... [2022-07-21 05:15:34,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 05:15:34,988 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 05:15:35,001 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) [2022-07-21 05:15:35,013 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 [2022-07-21 05:15:35,046 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 05:15:35,046 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-07-21 05:15:35,046 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-07-21 05:15:35,046 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-07-21 05:15:35,046 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-07-21 05:15:35,047 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-07-21 05:15:35,059 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-07-21 05:15:35,059 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-07-21 05:15:35,059 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-07-21 05:15:35,059 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-07-21 05:15:35,060 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-07-21 05:15:35,060 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 05:15:35,060 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-07-21 05:15:35,060 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-07-21 05:15:35,060 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 05:15:35,060 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 05:15:35,211 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 05:15:35,213 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 05:15:35,839 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 05:15:35,849 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 05:15:35,849 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2022-07-21 05:15:35,855 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 05:15:35 BoogieIcfgContainer [2022-07-21 05:15:35,855 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 05:15:35,857 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 05:15:35,857 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 05:15:35,861 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 05:15:35,861 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 05:15:34" (1/3) ... [2022-07-21 05:15:35,862 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@467d24eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 05:15:35, skipping insertion in model container [2022-07-21 05:15:35,862 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:15:34" (2/3) ... [2022-07-21 05:15:35,862 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@467d24eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 05:15:35, skipping insertion in model container [2022-07-21 05:15:35,862 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 05:15:35" (3/3) ... [2022-07-21 05:15:35,864 INFO L111 eAbstractionObserver]: Analyzing ICFG token_ring.09.cil-1.c [2022-07-21 05:15:35,876 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 05:15:35,876 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 05:15:35,944 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 05:15:35,953 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@269d2a37, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@56e806db [2022-07-21 05:15:35,953 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-21 05:15:35,960 INFO L276 IsEmpty]: Start isEmpty. Operand has 307 states, 276 states have (on average 1.6521739130434783) internal successors, (456), 278 states have internal predecessors, (456), 23 states have call successors, (23), 6 states have call predecessors, (23), 6 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2022-07-21 05:15:35,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-07-21 05:15:35,985 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:15:35,986 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] [2022-07-21 05:15:35,986 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:15:35,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:15:35,992 INFO L85 PathProgramCache]: Analyzing trace with hash 1628036766, now seen corresponding path program 1 times [2022-07-21 05:15:35,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:15:35,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960781864] [2022-07-21 05:15:36,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:15:36,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:15:36,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:36,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:15:36,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:36,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 05:15:36,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:36,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-21 05:15:36,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:36,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-21 05:15:36,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:36,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-07-21 05:15:36,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:36,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:15:36,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:15:36,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960781864] [2022-07-21 05:15:36,499 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960781864] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:15:36,499 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:15:36,499 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 05:15:36,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413922190] [2022-07-21 05:15:36,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:15:36,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 05:15:36,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:15:36,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 05:15:36,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 05:15:36,548 INFO L87 Difference]: Start difference. First operand has 307 states, 276 states have (on average 1.6521739130434783) internal successors, (456), 278 states have internal predecessors, (456), 23 states have call successors, (23), 6 states have call predecessors, (23), 6 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) Second operand has 5 states, 5 states have (on average 26.8) internal successors, (134), 3 states have internal predecessors, (134), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 05:15:37,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:15:37,713 INFO L93 Difference]: Finished difference Result 710 states and 1171 transitions. [2022-07-21 05:15:37,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 05:15:37,715 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.8) internal successors, (134), 3 states have internal predecessors, (134), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 144 [2022-07-21 05:15:37,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:15:37,732 INFO L225 Difference]: With dead ends: 710 [2022-07-21 05:15:37,732 INFO L226 Difference]: Without dead ends: 411 [2022-07-21 05:15:37,737 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 [2022-07-21 05:15:37,740 INFO L413 NwaCegarLoop]: 522 mSDtfsCounter, 803 mSDsluCounter, 319 mSDsCounter, 0 mSdLazyCounter, 564 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 824 SdHoareTripleChecker+Valid, 841 SdHoareTripleChecker+Invalid, 618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 564 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-21 05:15:37,741 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [824 Valid, 841 Invalid, 618 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 564 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-21 05:15:37,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2022-07-21 05:15:37,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 302. [2022-07-21 05:15:37,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 272 states have (on average 1.5625) internal successors, (425), 273 states have internal predecessors, (425), 23 states have call successors, (23), 6 states have call predecessors, (23), 6 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2022-07-21 05:15:37,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 471 transitions. [2022-07-21 05:15:37,809 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 471 transitions. Word has length 144 [2022-07-21 05:15:37,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:15:37,810 INFO L495 AbstractCegarLoop]: Abstraction has 302 states and 471 transitions. [2022-07-21 05:15:37,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.8) internal successors, (134), 3 states have internal predecessors, (134), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 05:15:37,810 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 471 transitions. [2022-07-21 05:15:37,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-07-21 05:15:37,813 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:15:37,814 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] [2022-07-21 05:15:37,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 05:15:37,814 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:15:37,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:15:37,815 INFO L85 PathProgramCache]: Analyzing trace with hash -2122057956, now seen corresponding path program 1 times [2022-07-21 05:15:37,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:15:37,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262753740] [2022-07-21 05:15:37,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:15:37,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:15:37,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:37,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:15:37,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:37,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 05:15:37,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:37,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-21 05:15:37,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:37,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-21 05:15:38,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:38,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-07-21 05:15:38,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:38,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:15:38,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:15:38,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262753740] [2022-07-21 05:15:38,013 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262753740] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:15:38,014 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:15:38,014 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 05:15:38,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546056763] [2022-07-21 05:15:38,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:15:38,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 05:15:38,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:15:38,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 05:15:38,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-21 05:15:38,017 INFO L87 Difference]: Start difference. First operand 302 states and 471 transitions. Second operand has 6 states, 6 states have (on average 22.333333333333332) internal successors, (134), 4 states have internal predecessors, (134), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 05:15:40,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:15:40,070 INFO L93 Difference]: Finished difference Result 1102 states and 1758 transitions. [2022-07-21 05:15:40,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 05:15:40,070 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.333333333333332) internal successors, (134), 4 states have internal predecessors, (134), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 144 [2022-07-21 05:15:40,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:15:40,080 INFO L225 Difference]: With dead ends: 1102 [2022-07-21 05:15:40,081 INFO L226 Difference]: Without dead ends: 817 [2022-07-21 05:15:40,087 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 [2022-07-21 05:15:40,088 INFO L413 NwaCegarLoop]: 558 mSDtfsCounter, 1208 mSDsluCounter, 755 mSDsCounter, 0 mSdLazyCounter, 1577 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1224 SdHoareTripleChecker+Valid, 1313 SdHoareTripleChecker+Invalid, 1681 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 1577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-21 05:15:40,089 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1224 Valid, 1313 Invalid, 1681 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 1577 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-21 05:15:40,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 817 states. [2022-07-21 05:15:40,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 817 to 600. [2022-07-21 05:15:40,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 600 states, 545 states have (on average 1.5743119266055046) internal successors, (858), 547 states have internal predecessors, (858), 41 states have call successors, (41), 12 states have call predecessors, (41), 13 states have return successors, (44), 41 states have call predecessors, (44), 41 states have call successors, (44) [2022-07-21 05:15:40,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 600 states to 600 states and 943 transitions. [2022-07-21 05:15:40,153 INFO L78 Accepts]: Start accepts. Automaton has 600 states and 943 transitions. Word has length 144 [2022-07-21 05:15:40,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:15:40,154 INFO L495 AbstractCegarLoop]: Abstraction has 600 states and 943 transitions. [2022-07-21 05:15:40,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.333333333333332) internal successors, (134), 4 states have internal predecessors, (134), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 05:15:40,154 INFO L276 IsEmpty]: Start isEmpty. Operand 600 states and 943 transitions. [2022-07-21 05:15:40,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-07-21 05:15:40,156 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:15:40,157 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] [2022-07-21 05:15:40,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 05:15:40,157 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:15:40,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:15:40,158 INFO L85 PathProgramCache]: Analyzing trace with hash -379054432, now seen corresponding path program 1 times [2022-07-21 05:15:40,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:15:40,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291778924] [2022-07-21 05:15:40,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:15:40,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:15:40,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:40,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:15:40,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:40,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 05:15:40,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:40,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-21 05:15:40,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:40,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-21 05:15:40,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:40,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-07-21 05:15:40,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:40,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:15:40,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:15:40,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291778924] [2022-07-21 05:15:40,317 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291778924] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:15:40,318 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:15:40,318 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 05:15:40,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079412523] [2022-07-21 05:15:40,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:15:40,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 05:15:40,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:15:40,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 05:15:40,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 05:15:40,322 INFO L87 Difference]: Start difference. First operand 600 states and 943 transitions. Second operand has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 05:15:42,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:15:42,879 INFO L93 Difference]: Finished difference Result 1820 states and 2905 transitions. [2022-07-21 05:15:42,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 05:15:42,880 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 144 [2022-07-21 05:15:42,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:15:42,886 INFO L225 Difference]: With dead ends: 1820 [2022-07-21 05:15:42,886 INFO L226 Difference]: Without dead ends: 1237 [2022-07-21 05:15:42,888 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-21 05:15:42,889 INFO L413 NwaCegarLoop]: 793 mSDtfsCounter, 1225 mSDsluCounter, 1488 mSDsCounter, 0 mSdLazyCounter, 2451 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1241 SdHoareTripleChecker+Valid, 2281 SdHoareTripleChecker+Invalid, 2520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 2451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-21 05:15:42,890 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1241 Valid, 2281 Invalid, 2520 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 2451 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-07-21 05:15:42,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1237 states. [2022-07-21 05:15:42,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1237 to 877. [2022-07-21 05:15:42,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 877 states, 797 states have (on average 1.5671267252195733) internal successors, (1249), 800 states have internal predecessors, (1249), 59 states have call successors, (59), 18 states have call predecessors, (59), 20 states have return successors, (64), 60 states have call predecessors, (64), 59 states have call successors, (64) [2022-07-21 05:15:42,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 877 states to 877 states and 1372 transitions. [2022-07-21 05:15:42,945 INFO L78 Accepts]: Start accepts. Automaton has 877 states and 1372 transitions. Word has length 144 [2022-07-21 05:15:42,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:15:42,945 INFO L495 AbstractCegarLoop]: Abstraction has 877 states and 1372 transitions. [2022-07-21 05:15:42,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 05:15:42,946 INFO L276 IsEmpty]: Start isEmpty. Operand 877 states and 1372 transitions. [2022-07-21 05:15:42,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-07-21 05:15:42,948 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:15:42,948 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] [2022-07-21 05:15:42,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-21 05:15:42,949 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:15:42,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:15:42,949 INFO L85 PathProgramCache]: Analyzing trace with hash 567983454, now seen corresponding path program 1 times [2022-07-21 05:15:42,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:15:42,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859877038] [2022-07-21 05:15:42,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:15:42,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:15:42,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:42,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:15:42,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:43,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 05:15:43,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:43,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-21 05:15:43,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:43,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-21 05:15:43,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:43,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-07-21 05:15:43,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:43,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:15:43,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:15:43,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859877038] [2022-07-21 05:15:43,071 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859877038] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:15:43,071 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:15:43,071 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 05:15:43,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232309187] [2022-07-21 05:15:43,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:15:43,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 05:15:43,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:15:43,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 05:15:43,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 05:15:43,074 INFO L87 Difference]: Start difference. First operand 877 states and 1372 transitions. Second operand has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 05:15:45,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:15:45,592 INFO L93 Difference]: Finished difference Result 2878 states and 4582 transitions. [2022-07-21 05:15:45,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 05:15:45,593 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 144 [2022-07-21 05:15:45,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:15:45,603 INFO L225 Difference]: With dead ends: 2878 [2022-07-21 05:15:45,603 INFO L226 Difference]: Without dead ends: 2018 [2022-07-21 05:15:45,606 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-21 05:15:45,607 INFO L413 NwaCegarLoop]: 785 mSDtfsCounter, 1222 mSDsluCounter, 1488 mSDsCounter, 0 mSdLazyCounter, 2453 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1238 SdHoareTripleChecker+Valid, 2273 SdHoareTripleChecker+Invalid, 2525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 2453 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:15:45,607 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1238 Valid, 2273 Invalid, 2525 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 2453 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-07-21 05:15:45,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2018 states. [2022-07-21 05:15:45,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2018 to 1432. [2022-07-21 05:15:45,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1432 states, 1302 states have (on average 1.5606758832565284) internal successors, (2032), 1307 states have internal predecessors, (2032), 95 states have call successors, (95), 30 states have call predecessors, (95), 34 states have return successors, (108), 98 states have call predecessors, (108), 95 states have call successors, (108) [2022-07-21 05:15:45,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1432 states to 1432 states and 2235 transitions. [2022-07-21 05:15:45,730 INFO L78 Accepts]: Start accepts. Automaton has 1432 states and 2235 transitions. Word has length 144 [2022-07-21 05:15:45,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:15:45,731 INFO L495 AbstractCegarLoop]: Abstraction has 1432 states and 2235 transitions. [2022-07-21 05:15:45,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 05:15:45,732 INFO L276 IsEmpty]: Start isEmpty. Operand 1432 states and 2235 transitions. [2022-07-21 05:15:45,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-07-21 05:15:45,738 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:15:45,738 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] [2022-07-21 05:15:45,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-21 05:15:45,739 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:15:45,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:15:45,740 INFO L85 PathProgramCache]: Analyzing trace with hash 1429817056, now seen corresponding path program 1 times [2022-07-21 05:15:45,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:15:45,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254099843] [2022-07-21 05:15:45,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:15:45,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:15:45,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:45,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:15:45,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:45,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 05:15:45,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:45,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-21 05:15:45,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:45,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-21 05:15:45,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:45,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-07-21 05:15:45,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:45,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:15:45,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:15:45,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254099843] [2022-07-21 05:15:45,899 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254099843] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:15:45,899 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:15:45,899 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 05:15:45,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110630017] [2022-07-21 05:15:45,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:15:45,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 05:15:45,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:15:45,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 05:15:45,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 05:15:45,902 INFO L87 Difference]: Start difference. First operand 1432 states and 2235 transitions. Second operand has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 05:15:48,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:15:48,246 INFO L93 Difference]: Finished difference Result 4913 states and 7789 transitions. [2022-07-21 05:15:48,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 05:15:48,246 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 144 [2022-07-21 05:15:48,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:15:48,263 INFO L225 Difference]: With dead ends: 4913 [2022-07-21 05:15:48,263 INFO L226 Difference]: Without dead ends: 3498 [2022-07-21 05:15:48,268 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-21 05:15:48,269 INFO L413 NwaCegarLoop]: 781 mSDtfsCounter, 1218 mSDsluCounter, 1488 mSDsCounter, 0 mSdLazyCounter, 2448 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1234 SdHoareTripleChecker+Valid, 2269 SdHoareTripleChecker+Invalid, 2520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 2448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-21 05:15:48,270 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1234 Valid, 2269 Invalid, 2520 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 2448 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-07-21 05:15:48,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3498 states. [2022-07-21 05:15:48,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3498 to 2543. [2022-07-21 05:15:48,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2543 states, 2313 states have (on average 1.5555555555555556) internal successors, (3598), 2322 states have internal predecessors, (3598), 167 states have call successors, (167), 54 states have call predecessors, (167), 62 states have return successors, (202), 174 states have call predecessors, (202), 167 states have call successors, (202) [2022-07-21 05:15:48,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2543 states to 2543 states and 3967 transitions. [2022-07-21 05:15:48,447 INFO L78 Accepts]: Start accepts. Automaton has 2543 states and 3967 transitions. Word has length 144 [2022-07-21 05:15:48,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:15:48,448 INFO L495 AbstractCegarLoop]: Abstraction has 2543 states and 3967 transitions. [2022-07-21 05:15:48,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 05:15:48,448 INFO L276 IsEmpty]: Start isEmpty. Operand 2543 states and 3967 transitions. [2022-07-21 05:15:48,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-07-21 05:15:48,451 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:15:48,451 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] [2022-07-21 05:15:48,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-21 05:15:48,452 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:15:48,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:15:48,453 INFO L85 PathProgramCache]: Analyzing trace with hash -620591842, now seen corresponding path program 1 times [2022-07-21 05:15:48,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:15:48,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183192660] [2022-07-21 05:15:48,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:15:48,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:15:48,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:48,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:15:48,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:48,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 05:15:48,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:48,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-21 05:15:48,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:48,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-21 05:15:48,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:48,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-07-21 05:15:48,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:48,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:15:48,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:15:48,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183192660] [2022-07-21 05:15:48,588 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183192660] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:15:48,588 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:15:48,589 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 05:15:48,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669488810] [2022-07-21 05:15:48,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:15:48,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 05:15:48,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:15:48,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 05:15:48,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 05:15:48,591 INFO L87 Difference]: Start difference. First operand 2543 states and 3967 transitions. Second operand has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 05:15:51,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:15:51,029 INFO L93 Difference]: Finished difference Result 8982 states and 14219 transitions. [2022-07-21 05:15:51,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 05:15:51,030 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 144 [2022-07-21 05:15:51,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:15:51,058 INFO L225 Difference]: With dead ends: 8982 [2022-07-21 05:15:51,058 INFO L226 Difference]: Without dead ends: 6456 [2022-07-21 05:15:51,068 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-21 05:15:51,071 INFO L413 NwaCegarLoop]: 775 mSDtfsCounter, 1217 mSDsluCounter, 1488 mSDsCounter, 0 mSdLazyCounter, 2440 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1233 SdHoareTripleChecker+Valid, 2263 SdHoareTripleChecker+Invalid, 2515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 2440 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-21 05:15:51,072 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1233 Valid, 2263 Invalid, 2515 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 2440 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-07-21 05:15:51,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6456 states. [2022-07-21 05:15:51,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6456 to 4770. [2022-07-21 05:15:51,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4770 states, 4340 states have (on average 1.552073732718894) internal successors, (6736), 4357 states have internal predecessors, (6736), 311 states have call successors, (311), 102 states have call predecessors, (311), 118 states have return successors, (408), 326 states have call predecessors, (408), 311 states have call successors, (408) [2022-07-21 05:15:51,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4770 states to 4770 states and 7455 transitions. [2022-07-21 05:15:51,416 INFO L78 Accepts]: Start accepts. Automaton has 4770 states and 7455 transitions. Word has length 144 [2022-07-21 05:15:51,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:15:51,417 INFO L495 AbstractCegarLoop]: Abstraction has 4770 states and 7455 transitions. [2022-07-21 05:15:51,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 05:15:51,418 INFO L276 IsEmpty]: Start isEmpty. Operand 4770 states and 7455 transitions. [2022-07-21 05:15:51,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-07-21 05:15:51,421 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:15:51,421 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] [2022-07-21 05:15:51,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-21 05:15:51,422 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:15:51,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:15:51,423 INFO L85 PathProgramCache]: Analyzing trace with hash -132544736, now seen corresponding path program 1 times [2022-07-21 05:15:51,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:15:51,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595351022] [2022-07-21 05:15:51,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:15:51,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:15:51,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:51,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:15:51,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:51,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 05:15:51,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:51,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-21 05:15:51,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:51,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-21 05:15:51,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:51,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-07-21 05:15:51,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:51,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:15:51,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:15:51,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595351022] [2022-07-21 05:15:51,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595351022] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:15:51,606 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:15:51,606 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 05:15:51,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227736237] [2022-07-21 05:15:51,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:15:51,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 05:15:51,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:15:51,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 05:15:51,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 05:15:51,608 INFO L87 Difference]: Start difference. First operand 4770 states and 7455 transitions. Second operand has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 05:15:54,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:15:54,175 INFO L93 Difference]: Finished difference Result 17104 states and 27109 transitions. [2022-07-21 05:15:54,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 05:15:54,177 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 144 [2022-07-21 05:15:54,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:15:54,236 INFO L225 Difference]: With dead ends: 17104 [2022-07-21 05:15:54,236 INFO L226 Difference]: Without dead ends: 12351 [2022-07-21 05:15:54,255 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-21 05:15:54,256 INFO L413 NwaCegarLoop]: 577 mSDtfsCounter, 1299 mSDsluCounter, 988 mSDsCounter, 0 mSdLazyCounter, 2154 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1315 SdHoareTripleChecker+Valid, 1565 SdHoareTripleChecker+Invalid, 2260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 2154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-21 05:15:54,256 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1315 Valid, 1565 Invalid, 2260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 2154 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-21 05:15:54,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12351 states. [2022-07-21 05:15:54,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12351 to 9254. [2022-07-21 05:15:54,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9254 states, 8424 states have (on average 1.550807217473884) internal successors, (13064), 8457 states have internal predecessors, (13064), 599 states have call successors, (599), 198 states have call predecessors, (599), 230 states have return successors, (874), 630 states have call predecessors, (874), 599 states have call successors, (874) [2022-07-21 05:15:54,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9254 states to 9254 states and 14537 transitions. [2022-07-21 05:15:54,964 INFO L78 Accepts]: Start accepts. Automaton has 9254 states and 14537 transitions. Word has length 144 [2022-07-21 05:15:54,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:15:54,964 INFO L495 AbstractCegarLoop]: Abstraction has 9254 states and 14537 transitions. [2022-07-21 05:15:54,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 05:15:54,965 INFO L276 IsEmpty]: Start isEmpty. Operand 9254 states and 14537 transitions. [2022-07-21 05:15:54,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-07-21 05:15:54,972 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:15:54,972 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] [2022-07-21 05:15:54,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-21 05:15:54,973 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:15:54,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:15:54,974 INFO L85 PathProgramCache]: Analyzing trace with hash -1414717022, now seen corresponding path program 1 times [2022-07-21 05:15:54,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:15:54,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145335453] [2022-07-21 05:15:54,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:15:54,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:15:54,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:55,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:15:55,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:55,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 05:15:55,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:55,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-21 05:15:55,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:55,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-21 05:15:55,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:55,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-07-21 05:15:55,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:55,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:15:55,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:15:55,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145335453] [2022-07-21 05:15:55,102 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145335453] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:15:55,102 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:15:55,102 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 05:15:55,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815722998] [2022-07-21 05:15:55,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:15:55,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 05:15:55,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:15:55,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 05:15:55,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 05:15:55,104 INFO L87 Difference]: Start difference. First operand 9254 states and 14537 transitions. Second operand has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 05:15:58,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:15:58,526 INFO L93 Difference]: Finished difference Result 33382 states and 53145 transitions. [2022-07-21 05:15:58,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 05:15:58,526 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 144 [2022-07-21 05:15:58,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:15:58,643 INFO L225 Difference]: With dead ends: 33382 [2022-07-21 05:15:58,643 INFO L226 Difference]: Without dead ends: 24145 [2022-07-21 05:15:58,691 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-21 05:15:58,693 INFO L413 NwaCegarLoop]: 762 mSDtfsCounter, 1211 mSDsluCounter, 1488 mSDsCounter, 0 mSdLazyCounter, 2412 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1227 SdHoareTripleChecker+Valid, 2250 SdHoareTripleChecker+Invalid, 2488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 2412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-21 05:15:58,694 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1227 Valid, 2250 Invalid, 2488 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 2412 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-07-21 05:15:58,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24145 states. [2022-07-21 05:16:00,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24145 to 18251. [2022-07-21 05:16:00,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18251 states, 16621 states have (on average 1.5499669093315684) internal successors, (25762), 16686 states have internal predecessors, (25762), 1175 states have call successors, (1175), 390 states have call predecessors, (1175), 454 states have return successors, (1968), 1238 states have call predecessors, (1968), 1175 states have call successors, (1968) [2022-07-21 05:16:00,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18251 states to 18251 states and 28905 transitions. [2022-07-21 05:16:00,221 INFO L78 Accepts]: Start accepts. Automaton has 18251 states and 28905 transitions. Word has length 144 [2022-07-21 05:16:00,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:16:00,222 INFO L495 AbstractCegarLoop]: Abstraction has 18251 states and 28905 transitions. [2022-07-21 05:16:00,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 05:16:00,223 INFO L276 IsEmpty]: Start isEmpty. Operand 18251 states and 28905 transitions. [2022-07-21 05:16:00,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-07-21 05:16:00,235 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:16:00,236 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] [2022-07-21 05:16:00,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-21 05:16:00,236 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:16:00,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:16:00,237 INFO L85 PathProgramCache]: Analyzing trace with hash 1037774560, now seen corresponding path program 1 times [2022-07-21 05:16:00,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:16:00,237 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353808918] [2022-07-21 05:16:00,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:16:00,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:16:00,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:16:00,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:16:00,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:16:00,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 05:16:00,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:16:00,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-21 05:16:00,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:16:00,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-21 05:16:00,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:16:00,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-07-21 05:16:00,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:16:00,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:16:00,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:16:00,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353808918] [2022-07-21 05:16:00,370 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353808918] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:16:00,370 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:16:00,370 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 05:16:00,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279332236] [2022-07-21 05:16:00,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:16:00,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 05:16:00,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:16:00,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 05:16:00,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 05:16:00,376 INFO L87 Difference]: Start difference. First operand 18251 states and 28905 transitions. Second operand has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 05:16:04,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:16:04,873 INFO L93 Difference]: Finished difference Result 65937 states and 105815 transitions. [2022-07-21 05:16:04,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 05:16:04,874 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 144 [2022-07-21 05:16:04,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:16:05,250 INFO L225 Difference]: With dead ends: 65937 [2022-07-21 05:16:05,251 INFO L226 Difference]: Without dead ends: 47703 [2022-07-21 05:16:05,310 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-21 05:16:05,313 INFO L413 NwaCegarLoop]: 757 mSDtfsCounter, 1210 mSDsluCounter, 1488 mSDsCounter, 0 mSdLazyCounter, 2404 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1226 SdHoareTripleChecker+Valid, 2245 SdHoareTripleChecker+Invalid, 2480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 2404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-21 05:16:05,313 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1226 Valid, 2245 Invalid, 2480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 2404 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-21 05:16:05,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47703 states. [2022-07-21 05:16:07,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47703 to 36308. [2022-07-21 05:16:07,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36308 states, 33078 states have (on average 1.5494286232541266) internal successors, (51252), 33207 states have internal predecessors, (51252), 2327 states have call successors, (2327), 774 states have call predecessors, (2327), 902 states have return successors, (4642), 2454 states have call predecessors, (4642), 2327 states have call successors, (4642) [2022-07-21 05:16:07,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36308 states to 36308 states and 58221 transitions. [2022-07-21 05:16:07,830 INFO L78 Accepts]: Start accepts. Automaton has 36308 states and 58221 transitions. Word has length 144 [2022-07-21 05:16:07,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:16:07,831 INFO L495 AbstractCegarLoop]: Abstraction has 36308 states and 58221 transitions. [2022-07-21 05:16:07,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 05:16:07,831 INFO L276 IsEmpty]: Start isEmpty. Operand 36308 states and 58221 transitions. [2022-07-21 05:16:07,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-07-21 05:16:07,855 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:16:07,856 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] [2022-07-21 05:16:07,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-21 05:16:07,856 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:16:07,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:16:07,857 INFO L85 PathProgramCache]: Analyzing trace with hash -684228126, now seen corresponding path program 1 times [2022-07-21 05:16:07,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:16:07,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142686998] [2022-07-21 05:16:07,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:16:07,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:16:07,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:16:07,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:16:07,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:16:07,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 05:16:07,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:16:07,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-21 05:16:07,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:16:07,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-21 05:16:07,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:16:07,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-07-21 05:16:07,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:16:07,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:16:07,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:16:07,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142686998] [2022-07-21 05:16:07,996 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142686998] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:16:07,996 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:16:07,996 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 05:16:07,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114355529] [2022-07-21 05:16:07,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:16:07,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 05:16:07,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:16:07,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 05:16:07,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 05:16:07,998 INFO L87 Difference]: Start difference. First operand 36308 states and 58221 transitions. Second operand has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 05:16:15,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:16:15,294 INFO L93 Difference]: Finished difference Result 131048 states and 213005 transitions. [2022-07-21 05:16:15,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 05:16:15,294 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 144 [2022-07-21 05:16:15,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:16:15,733 INFO L225 Difference]: With dead ends: 131048 [2022-07-21 05:16:15,734 INFO L226 Difference]: Without dead ends: 94757 [2022-07-21 05:16:15,870 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-21 05:16:15,871 INFO L413 NwaCegarLoop]: 752 mSDtfsCounter, 1209 mSDsluCounter, 1488 mSDsCounter, 0 mSdLazyCounter, 2396 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1225 SdHoareTripleChecker+Valid, 2240 SdHoareTripleChecker+Invalid, 2472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 2396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-21 05:16:15,871 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1225 Valid, 2240 Invalid, 2472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 2396 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-07-21 05:16:15,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94757 states. [2022-07-21 05:16:20,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94757 to 72549. [2022-07-21 05:16:20,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72549 states, 66119 states have (on average 1.5490554908573935) internal successors, (102422), 66376 states have internal predecessors, (102422), 4631 states have call successors, (4631), 1542 states have call predecessors, (4631), 1798 states have return successors, (11448), 4886 states have call predecessors, (11448), 4631 states have call successors, (11448) [2022-07-21 05:16:20,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72549 states to 72549 states and 118501 transitions. [2022-07-21 05:16:20,517 INFO L78 Accepts]: Start accepts. Automaton has 72549 states and 118501 transitions. Word has length 144 [2022-07-21 05:16:20,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:16:20,518 INFO L495 AbstractCegarLoop]: Abstraction has 72549 states and 118501 transitions. [2022-07-21 05:16:20,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 05:16:20,519 INFO L276 IsEmpty]: Start isEmpty. Operand 72549 states and 118501 transitions. [2022-07-21 05:16:20,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-07-21 05:16:20,563 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:16:20,563 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] [2022-07-21 05:16:20,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-21 05:16:20,564 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:16:20,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:16:20,564 INFO L85 PathProgramCache]: Analyzing trace with hash -1016871264, now seen corresponding path program 1 times [2022-07-21 05:16:20,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:16:20,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192704543] [2022-07-21 05:16:20,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:16:20,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:16:20,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:16:20,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:16:20,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:16:20,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 05:16:20,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:16:20,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-21 05:16:20,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:16:20,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-21 05:16:20,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:16:20,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-07-21 05:16:20,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:16:20,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:16:20,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:16:20,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192704543] [2022-07-21 05:16:20,688 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192704543] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:16:20,688 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:16:20,688 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 05:16:20,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428070955] [2022-07-21 05:16:20,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:16:20,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 05:16:20,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:16:20,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 05:16:20,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 05:16:20,690 INFO L87 Difference]: Start difference. First operand 72549 states and 118501 transitions. Second operand has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 05:16:37,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:16:37,801 INFO L93 Difference]: Finished difference Result 295831 states and 485765 transitions. [2022-07-21 05:16:37,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-21 05:16:37,802 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 144 [2022-07-21 05:16:37,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:16:39,118 INFO L225 Difference]: With dead ends: 295831 [2022-07-21 05:16:39,119 INFO L226 Difference]: Without dead ends: 223299 [2022-07-21 05:16:39,501 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-21 05:16:39,502 INFO L413 NwaCegarLoop]: 745 mSDtfsCounter, 1577 mSDsluCounter, 1480 mSDsCounter, 0 mSdLazyCounter, 2381 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1603 SdHoareTripleChecker+Valid, 2225 SdHoareTripleChecker+Invalid, 2462 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 2381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-21 05:16:39,503 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1603 Valid, 2225 Invalid, 2462 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 2381 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-07-21 05:16:39,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223299 states.