./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/systemc/token_ring.08.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c 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.08.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 42e706fd1a5bd201d46dd2f3322f156b6d900789b8c9ace16cba5458f69fdc62 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 06:34:08,991 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 06:34:08,993 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 06:34:09,039 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 06:34:09,040 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 06:34:09,041 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 06:34:09,043 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 06:34:09,045 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 06:34:09,047 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 06:34:09,051 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 06:34:09,052 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 06:34:09,054 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 06:34:09,055 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 06:34:09,057 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 06:34:09,058 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 06:34:09,061 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 06:34:09,061 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 06:34:09,063 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 06:34:09,064 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 06:34:09,070 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 06:34:09,072 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 06:34:09,073 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 06:34:09,074 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 06:34:09,074 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 06:34:09,078 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 06:34:09,084 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 06:34:09,085 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 06:34:09,085 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 06:34:09,087 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 06:34:09,087 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 06:34:09,089 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 06:34:09,090 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 06:34:09,091 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 06:34:09,092 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 06:34:09,092 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 06:34:09,093 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 06:34:09,093 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 06:34:09,094 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 06:34:09,094 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 06:34:09,094 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 06:34:09,095 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 06:34:09,097 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 06:34:09,098 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 06:34:09,126 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 06:34:09,127 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 06:34:09,127 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 06:34:09,128 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 06:34:09,128 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 06:34:09,129 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 06:34:09,129 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 06:34:09,129 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 06:34:09,129 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 06:34:09,130 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 06:34:09,131 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 06:34:09,131 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 06:34:09,131 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 06:34:09,131 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 06:34:09,131 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 06:34:09,131 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 06:34:09,132 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 06:34:09,132 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 06:34:09,132 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 06:34:09,132 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 06:34:09,133 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 06:34:09,133 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 06:34:09,133 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 06:34:09,133 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 06:34:09,133 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 06:34:09,134 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 06:34:09,134 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 06:34:09,134 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 06:34:09,134 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 06:34:09,134 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 06:34:09,135 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 06:34:09,135 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 06:34:09,135 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 06:34:09,135 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 42e706fd1a5bd201d46dd2f3322f156b6d900789b8c9ace16cba5458f69fdc62 [2022-07-12 06:34:09,429 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 06:34:09,448 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 06:34:09,450 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 06:34:09,451 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 06:34:09,452 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 06:34:09,453 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/systemc/token_ring.08.cil-1.c [2022-07-12 06:34:09,515 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/197576dd9/18064d556e874b6baa30886ebd9d3206/FLAG44f6e53e5 [2022-07-12 06:34:10,036 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 06:34:10,037 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/systemc/token_ring.08.cil-1.c [2022-07-12 06:34:10,063 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/197576dd9/18064d556e874b6baa30886ebd9d3206/FLAG44f6e53e5 [2022-07-12 06:34:10,394 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/197576dd9/18064d556e874b6baa30886ebd9d3206 [2022-07-12 06:34:10,397 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 06:34:10,398 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 06:34:10,402 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 06:34:10,402 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 06:34:10,409 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 06:34:10,410 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 06:34:10" (1/1) ... [2022-07-12 06:34:10,411 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b06bd0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:34:10, skipping insertion in model container [2022-07-12 06:34:10,411 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 06:34:10" (1/1) ... [2022-07-12 06:34:10,417 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 06:34:10,465 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 06:34:10,579 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.08.cil-1.c[671,684] [2022-07-12 06:34:10,670 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 06:34:10,681 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 06:34:10,692 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.08.cil-1.c[671,684] [2022-07-12 06:34:10,745 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 06:34:10,768 INFO L208 MainTranslator]: Completed translation [2022-07-12 06:34:10,768 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:34:10 WrapperNode [2022-07-12 06:34:10,768 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 06:34:10,769 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 06:34:10,769 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 06:34:10,769 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 06:34:10,775 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:34:10" (1/1) ... [2022-07-12 06:34:10,785 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:34:10" (1/1) ... [2022-07-12 06:34:10,822 INFO L137 Inliner]: procedures = 44, calls = 55, calls flagged for inlining = 28, calls inlined = 28, statements flattened = 621 [2022-07-12 06:34:10,823 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 06:34:10,823 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 06:34:10,823 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 06:34:10,824 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 06:34:10,832 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:34:10" (1/1) ... [2022-07-12 06:34:10,832 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:34:10" (1/1) ... [2022-07-12 06:34:10,836 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:34:10" (1/1) ... [2022-07-12 06:34:10,836 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:34:10" (1/1) ... [2022-07-12 06:34:10,846 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:34:10" (1/1) ... [2022-07-12 06:34:10,857 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:34:10" (1/1) ... [2022-07-12 06:34:10,860 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:34:10" (1/1) ... [2022-07-12 06:34:10,865 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 06:34:10,866 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 06:34:10,866 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 06:34:10,866 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 06:34:10,867 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:34:10" (1/1) ... [2022-07-12 06:34:10,874 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 06:34:10,886 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 06:34:10,909 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) [2022-07-12 06:34:10,950 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 [2022-07-12 06:34:10,974 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 06:34:10,974 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-07-12 06:34:10,974 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-07-12 06:34:10,975 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-07-12 06:34:10,975 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-07-12 06:34:10,975 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-07-12 06:34:10,975 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-07-12 06:34:10,975 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-07-12 06:34:10,975 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-07-12 06:34:10,976 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-07-12 06:34:10,976 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-07-12 06:34:10,976 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 06:34:10,977 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-07-12 06:34:10,977 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-07-12 06:34:10,977 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 06:34:10,977 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 06:34:11,096 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 06:34:11,098 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 06:34:11,702 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 06:34:11,717 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 06:34:11,717 INFO L299 CfgBuilder]: Removed 11 assume(true) statements. [2022-07-12 06:34:11,720 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 06:34:11 BoogieIcfgContainer [2022-07-12 06:34:11,720 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 06:34:11,722 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 06:34:11,723 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 06:34:11,726 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 06:34:11,726 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 06:34:10" (1/3) ... [2022-07-12 06:34:11,727 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fedf128 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 06:34:11, skipping insertion in model container [2022-07-12 06:34:11,727 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:34:10" (2/3) ... [2022-07-12 06:34:11,728 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fedf128 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 06:34:11, skipping insertion in model container [2022-07-12 06:34:11,728 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 06:34:11" (3/3) ... [2022-07-12 06:34:11,729 INFO L111 eAbstractionObserver]: Analyzing ICFG token_ring.08.cil-1.c [2022-07-12 06:34:11,743 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 06:34:11,743 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 06:34:11,815 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 06:34:11,820 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@36295879, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@21e5ef6b [2022-07-12 06:34:11,821 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-12 06:34:11,832 INFO L276 IsEmpty]: Start isEmpty. Operand has 282 states, 252 states have (on average 1.6468253968253967) internal successors, (415), 254 states have internal predecessors, (415), 22 states have call successors, (22), 6 states have call predecessors, (22), 6 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2022-07-12 06:34:11,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-07-12 06:34:11,866 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:34:11,871 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] [2022-07-12 06:34:11,872 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:34:11,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:34:11,879 INFO L85 PathProgramCache]: Analyzing trace with hash -120906414, now seen corresponding path program 1 times [2022-07-12 06:34:11,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:34:11,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128052065] [2022-07-12 06:34:11,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:34:11,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:34:12,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:34:12,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 06:34:12,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:34:12,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 06:34:12,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:34:12,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-12 06:34:12,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:34:12,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-12 06:34:12,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:34:12,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-12 06:34:12,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:34:12,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:34:12,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:34:12,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128052065] [2022-07-12 06:34:12,307 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128052065] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:34:12,309 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:34:12,309 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 06:34:12,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966687842] [2022-07-12 06:34:12,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:34:12,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 06:34:12,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:34:12,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 06:34:12,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 06:34:12,355 INFO L87 Difference]: Start difference. First operand has 282 states, 252 states have (on average 1.6468253968253967) internal successors, (415), 254 states have internal predecessors, (415), 22 states have call successors, (22), 6 states have call predecessors, (22), 6 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) Second operand has 5 states, 5 states have (on average 24.6) internal successors, (123), 3 states have internal predecessors, (123), 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) [2022-07-12 06:34:13,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:34:13,695 INFO L93 Difference]: Finished difference Result 651 states and 1070 transitions. [2022-07-12 06:34:13,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 06:34:13,697 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.6) internal successors, (123), 3 states have internal predecessors, (123), 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 133 [2022-07-12 06:34:13,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:34:13,709 INFO L225 Difference]: With dead ends: 651 [2022-07-12 06:34:13,709 INFO L226 Difference]: Without dead ends: 375 [2022-07-12 06:34:13,715 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 [2022-07-12 06:34:13,718 INFO L413 NwaCegarLoop]: 476 mSDtfsCounter, 730 mSDsluCounter, 293 mSDsCounter, 0 mSdLazyCounter, 511 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 750 SdHoareTripleChecker+Valid, 769 SdHoareTripleChecker+Invalid, 563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 511 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:34:13,719 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [750 Valid, 769 Invalid, 563 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 511 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-12 06:34:13,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2022-07-12 06:34:13,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 277. [2022-07-12 06:34:13,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 248 states have (on average 1.5564516129032258) internal successors, (386), 249 states have internal predecessors, (386), 22 states have call successors, (22), 6 states have call predecessors, (22), 6 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2022-07-12 06:34:13,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 430 transitions. [2022-07-12 06:34:13,788 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 430 transitions. Word has length 133 [2022-07-12 06:34:13,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:34:13,788 INFO L495 AbstractCegarLoop]: Abstraction has 277 states and 430 transitions. [2022-07-12 06:34:13,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.6) internal successors, (123), 3 states have internal predecessors, (123), 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) [2022-07-12 06:34:13,789 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 430 transitions. [2022-07-12 06:34:13,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-07-12 06:34:13,795 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:34:13,795 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] [2022-07-12 06:34:13,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 06:34:13,796 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:34:13,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:34:13,797 INFO L85 PathProgramCache]: Analyzing trace with hash 1929502484, now seen corresponding path program 1 times [2022-07-12 06:34:13,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:34:13,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544472621] [2022-07-12 06:34:13,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:34:13,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:34:13,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:34:13,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 06:34:13,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:34:13,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 06:34:13,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:34:13,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-12 06:34:13,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:34:13,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-12 06:34:13,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:34:14,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-12 06:34:14,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:34:14,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:34:14,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:34:14,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544472621] [2022-07-12 06:34:14,005 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544472621] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:34:14,005 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:34:14,006 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 06:34:14,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740647115] [2022-07-12 06:34:14,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:34:14,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 06:34:14,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:34:14,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 06:34:14,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-12 06:34:14,009 INFO L87 Difference]: Start difference. First operand 277 states and 430 transitions. Second operand has 6 states, 6 states have (on average 20.5) internal successors, (123), 4 states have internal predecessors, (123), 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) [2022-07-12 06:34:15,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:34:15,896 INFO L93 Difference]: Finished difference Result 1005 states and 1597 transitions. [2022-07-12 06:34:15,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-12 06:34:15,897 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 20.5) internal successors, (123), 4 states have internal predecessors, (123), 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 133 [2022-07-12 06:34:15,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:34:15,903 INFO L225 Difference]: With dead ends: 1005 [2022-07-12 06:34:15,903 INFO L226 Difference]: Without dead ends: 744 [2022-07-12 06:34:15,905 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-07-12 06:34:15,906 INFO L413 NwaCegarLoop]: 508 mSDtfsCounter, 1093 mSDsluCounter, 692 mSDsCounter, 0 mSdLazyCounter, 1431 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1108 SdHoareTripleChecker+Valid, 1200 SdHoareTripleChecker+Invalid, 1531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 1431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-12 06:34:15,907 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1108 Valid, 1200 Invalid, 1531 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 1431 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-12 06:34:15,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2022-07-12 06:34:15,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 549. [2022-07-12 06:34:15,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 549 states, 496 states have (on average 1.5685483870967742) internal successors, (778), 498 states have internal predecessors, (778), 39 states have call successors, (39), 12 states have call predecessors, (39), 13 states have return successors, (42), 39 states have call predecessors, (42), 39 states have call successors, (42) [2022-07-12 06:34:15,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 859 transitions. [2022-07-12 06:34:15,976 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 859 transitions. Word has length 133 [2022-07-12 06:34:15,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:34:15,980 INFO L495 AbstractCegarLoop]: Abstraction has 549 states and 859 transitions. [2022-07-12 06:34:15,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.5) internal successors, (123), 4 states have internal predecessors, (123), 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) [2022-07-12 06:34:15,981 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 859 transitions. [2022-07-12 06:34:15,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-07-12 06:34:15,988 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:34:15,989 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] [2022-07-12 06:34:15,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 06:34:15,990 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:34:15,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:34:15,991 INFO L85 PathProgramCache]: Analyzing trace with hash 222998936, now seen corresponding path program 1 times [2022-07-12 06:34:15,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:34:15,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646647719] [2022-07-12 06:34:15,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:34:15,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:34:16,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:34:16,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 06:34:16,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:34:16,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 06:34:16,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:34:16,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-12 06:34:16,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:34:16,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-12 06:34:16,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:34:16,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-12 06:34:16,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:34:16,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:34:16,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:34:16,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646647719] [2022-07-12 06:34:16,225 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646647719] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:34:16,225 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:34:16,226 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 06:34:16,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777202926] [2022-07-12 06:34:16,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:34:16,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 06:34:16,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:34:16,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 06:34:16,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 06:34:16,228 INFO L87 Difference]: Start difference. First operand 549 states and 859 transitions. Second operand has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 5 states have internal predecessors, (123), 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) [2022-07-12 06:34:18,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:34:18,531 INFO L93 Difference]: Finished difference Result 1658 states and 2635 transitions. [2022-07-12 06:34:18,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 06:34:18,532 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 5 states have internal predecessors, (123), 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 133 [2022-07-12 06:34:18,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:34:18,540 INFO L225 Difference]: With dead ends: 1658 [2022-07-12 06:34:18,540 INFO L226 Difference]: Without dead ends: 1125 [2022-07-12 06:34:18,542 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 [2022-07-12 06:34:18,544 INFO L413 NwaCegarLoop]: 719 mSDtfsCounter, 1107 mSDsluCounter, 1360 mSDsCounter, 0 mSdLazyCounter, 2219 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1122 SdHoareTripleChecker+Valid, 2079 SdHoareTripleChecker+Invalid, 2287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 2219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-12 06:34:18,544 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1122 Valid, 2079 Invalid, 2287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 2219 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-07-12 06:34:18,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1125 states. [2022-07-12 06:34:18,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1125 to 802. [2022-07-12 06:34:18,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 802 states, 725 states have (on average 1.5613793103448277) internal successors, (1132), 728 states have internal predecessors, (1132), 56 states have call successors, (56), 18 states have call predecessors, (56), 20 states have return successors, (61), 57 states have call predecessors, (61), 56 states have call successors, (61) [2022-07-12 06:34:18,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 802 states to 802 states and 1249 transitions. [2022-07-12 06:34:18,618 INFO L78 Accepts]: Start accepts. Automaton has 802 states and 1249 transitions. Word has length 133 [2022-07-12 06:34:18,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:34:18,618 INFO L495 AbstractCegarLoop]: Abstraction has 802 states and 1249 transitions. [2022-07-12 06:34:18,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 5 states have internal predecessors, (123), 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) [2022-07-12 06:34:18,619 INFO L276 IsEmpty]: Start isEmpty. Operand 802 states and 1249 transitions. [2022-07-12 06:34:18,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-07-12 06:34:18,620 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:34:18,620 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:34:18,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-12 06:34:18,621 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:34:18,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:34:18,622 INFO L85 PathProgramCache]: Analyzing trace with hash -2070082090, now seen corresponding path program 1 times [2022-07-12 06:34:18,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:34:18,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500699519] [2022-07-12 06:34:18,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:34:18,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:34:18,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:34:18,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 06:34:18,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:34:18,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 06:34:18,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:34:18,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-12 06:34:18,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:34:18,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-12 06:34:18,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:34:18,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-12 06:34:18,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:34:18,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:34:18,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:34:18,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500699519] [2022-07-12 06:34:18,753 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500699519] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:34:18,753 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:34:18,753 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 06:34:18,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920512933] [2022-07-12 06:34:18,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:34:18,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 06:34:18,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:34:18,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 06:34:18,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 06:34:18,755 INFO L87 Difference]: Start difference. First operand 802 states and 1249 transitions. Second operand has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 5 states have internal predecessors, (123), 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) [2022-07-12 06:34:20,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:34:20,898 INFO L93 Difference]: Finished difference Result 2620 states and 4153 transitions. [2022-07-12 06:34:20,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 06:34:20,899 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 5 states have internal predecessors, (123), 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 133 [2022-07-12 06:34:20,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:34:20,912 INFO L225 Difference]: With dead ends: 2620 [2022-07-12 06:34:20,912 INFO L226 Difference]: Without dead ends: 1834 [2022-07-12 06:34:20,916 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-12 06:34:20,925 INFO L413 NwaCegarLoop]: 536 mSDtfsCounter, 1184 mSDsluCounter, 906 mSDsCounter, 0 mSdLazyCounter, 1975 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1199 SdHoareTripleChecker+Valid, 1442 SdHoareTripleChecker+Invalid, 2074 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 1975 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-12 06:34:20,928 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1199 Valid, 1442 Invalid, 2074 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 1975 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-12 06:34:20,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1834 states. [2022-07-12 06:34:21,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1834 to 1309. [2022-07-12 06:34:21,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1309 states, 1184 states have (on average 1.5548986486486487) internal successors, (1841), 1189 states have internal predecessors, (1841), 90 states have call successors, (90), 30 states have call predecessors, (90), 34 states have return successors, (103), 93 states have call predecessors, (103), 90 states have call successors, (103) [2022-07-12 06:34:21,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1309 states to 1309 states and 2034 transitions. [2022-07-12 06:34:21,022 INFO L78 Accepts]: Start accepts. Automaton has 1309 states and 2034 transitions. Word has length 133 [2022-07-12 06:34:21,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:34:21,023 INFO L495 AbstractCegarLoop]: Abstraction has 1309 states and 2034 transitions. [2022-07-12 06:34:21,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 5 states have internal predecessors, (123), 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) [2022-07-12 06:34:21,024 INFO L276 IsEmpty]: Start isEmpty. Operand 1309 states and 2034 transitions. [2022-07-12 06:34:21,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-07-12 06:34:21,026 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:34:21,026 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] [2022-07-12 06:34:21,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-12 06:34:21,027 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:34:21,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:34:21,028 INFO L85 PathProgramCache]: Analyzing trace with hash -342937128, now seen corresponding path program 1 times [2022-07-12 06:34:21,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:34:21,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111452089] [2022-07-12 06:34:21,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:34:21,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:34:21,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:34:21,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 06:34:21,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:34:21,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 06:34:21,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:34:21,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-12 06:34:21,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:34:21,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-12 06:34:21,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:34:21,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-12 06:34:21,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:34:21,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:34:21,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:34:21,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111452089] [2022-07-12 06:34:21,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111452089] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:34:21,186 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:34:21,186 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 06:34:21,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489732815] [2022-07-12 06:34:21,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:34:21,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 06:34:21,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:34:21,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 06:34:21,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 06:34:21,188 INFO L87 Difference]: Start difference. First operand 1309 states and 2034 transitions. Second operand has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 5 states have internal predecessors, (123), 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) [2022-07-12 06:34:23,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:34:23,402 INFO L93 Difference]: Finished difference Result 4471 states and 7058 transitions. [2022-07-12 06:34:23,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 06:34:23,403 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 5 states have internal predecessors, (123), 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 133 [2022-07-12 06:34:23,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:34:23,421 INFO L225 Difference]: With dead ends: 4471 [2022-07-12 06:34:23,421 INFO L226 Difference]: Without dead ends: 3178 [2022-07-12 06:34:23,427 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-12 06:34:23,428 INFO L413 NwaCegarLoop]: 709 mSDtfsCounter, 1099 mSDsluCounter, 1360 mSDsCounter, 0 mSdLazyCounter, 2221 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1114 SdHoareTripleChecker+Valid, 2069 SdHoareTripleChecker+Invalid, 2291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 2221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-12 06:34:23,428 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1114 Valid, 2069 Invalid, 2291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 2221 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-12 06:34:23,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3178 states. [2022-07-12 06:34:23,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3178 to 2324. [2022-07-12 06:34:23,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2324 states, 2103 states have (on average 1.5496909177365668) internal successors, (3259), 2112 states have internal predecessors, (3259), 158 states have call successors, (158), 54 states have call predecessors, (158), 62 states have return successors, (193), 165 states have call predecessors, (193), 158 states have call successors, (193) [2022-07-12 06:34:23,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2324 states to 2324 states and 3610 transitions. [2022-07-12 06:34:23,608 INFO L78 Accepts]: Start accepts. Automaton has 2324 states and 3610 transitions. Word has length 133 [2022-07-12 06:34:23,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:34:23,608 INFO L495 AbstractCegarLoop]: Abstraction has 2324 states and 3610 transitions. [2022-07-12 06:34:23,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 5 states have internal predecessors, (123), 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) [2022-07-12 06:34:23,609 INFO L276 IsEmpty]: Start isEmpty. Operand 2324 states and 3610 transitions. [2022-07-12 06:34:23,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-07-12 06:34:23,611 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:34:23,612 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] [2022-07-12 06:34:23,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-12 06:34:23,612 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:34:23,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:34:23,613 INFO L85 PathProgramCache]: Analyzing trace with hash 128419222, now seen corresponding path program 1 times [2022-07-12 06:34:23,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:34:23,614 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274103694] [2022-07-12 06:34:23,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:34:23,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:34:23,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:34:23,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 06:34:23,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:34:23,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 06:34:23,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:34:23,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-12 06:34:23,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:34:23,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-12 06:34:23,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:34:23,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-12 06:34:23,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:34:23,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:34:23,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:34:23,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274103694] [2022-07-12 06:34:23,746 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274103694] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:34:23,746 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:34:23,746 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 06:34:23,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350775469] [2022-07-12 06:34:23,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:34:23,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 06:34:23,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:34:23,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 06:34:23,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 06:34:23,748 INFO L87 Difference]: Start difference. First operand 2324 states and 3610 transitions. Second operand has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 5 states have internal predecessors, (123), 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) [2022-07-12 06:34:25,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:34:25,980 INFO L93 Difference]: Finished difference Result 8172 states and 12884 transitions. [2022-07-12 06:34:25,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 06:34:25,981 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 5 states have internal predecessors, (123), 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 133 [2022-07-12 06:34:25,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:34:26,014 INFO L225 Difference]: With dead ends: 8172 [2022-07-12 06:34:26,015 INFO L226 Difference]: Without dead ends: 5864 [2022-07-12 06:34:26,026 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 [2022-07-12 06:34:26,028 INFO L413 NwaCegarLoop]: 705 mSDtfsCounter, 1095 mSDsluCounter, 1360 mSDsCounter, 0 mSdLazyCounter, 2216 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1110 SdHoareTripleChecker+Valid, 2065 SdHoareTripleChecker+Invalid, 2286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 2216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-12 06:34:26,028 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1110 Valid, 2065 Invalid, 2286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 2216 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-12 06:34:26,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5864 states. [2022-07-12 06:34:26,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5864 to 4359. [2022-07-12 06:34:26,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4359 states, 3946 states have (on average 1.5461226558540293) internal successors, (6101), 3963 states have internal predecessors, (6101), 294 states have call successors, (294), 102 states have call predecessors, (294), 118 states have return successors, (391), 309 states have call predecessors, (391), 294 states have call successors, (391) [2022-07-12 06:34:26,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4359 states to 4359 states and 6786 transitions. [2022-07-12 06:34:26,350 INFO L78 Accepts]: Start accepts. Automaton has 4359 states and 6786 transitions. Word has length 133 [2022-07-12 06:34:26,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:34:26,350 INFO L495 AbstractCegarLoop]: Abstraction has 4359 states and 6786 transitions. [2022-07-12 06:34:26,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 5 states have internal predecessors, (123), 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) [2022-07-12 06:34:26,351 INFO L276 IsEmpty]: Start isEmpty. Operand 4359 states and 6786 transitions. [2022-07-12 06:34:26,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-07-12 06:34:26,355 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:34:26,355 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] [2022-07-12 06:34:26,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-12 06:34:26,356 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:34:26,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:34:26,356 INFO L85 PathProgramCache]: Analyzing trace with hash -1518943720, now seen corresponding path program 1 times [2022-07-12 06:34:26,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:34:26,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318280645] [2022-07-12 06:34:26,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:34:26,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:34:26,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:34:26,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 06:34:26,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:34:26,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 06:34:26,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:34:26,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-12 06:34:26,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:34:26,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-12 06:34:26,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:34:26,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-12 06:34:26,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:34:26,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:34:26,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:34:26,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318280645] [2022-07-12 06:34:26,506 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318280645] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:34:26,506 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:34:26,507 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 06:34:26,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535505120] [2022-07-12 06:34:26,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:34:26,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 06:34:26,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:34:26,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 06:34:26,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 06:34:26,509 INFO L87 Difference]: Start difference. First operand 4359 states and 6786 transitions. Second operand has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 5 states have internal predecessors, (123), 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) [2022-07-12 06:34:29,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:34:29,079 INFO L93 Difference]: Finished difference Result 15573 states and 24594 transitions. [2022-07-12 06:34:29,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 06:34:29,080 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 5 states have internal predecessors, (123), 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 133 [2022-07-12 06:34:29,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:34:29,131 INFO L225 Difference]: With dead ends: 15573 [2022-07-12 06:34:29,131 INFO L226 Difference]: Without dead ends: 11230 [2022-07-12 06:34:29,150 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-12 06:34:29,151 INFO L413 NwaCegarLoop]: 701 mSDtfsCounter, 1091 mSDsluCounter, 1360 mSDsCounter, 0 mSdLazyCounter, 2211 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1106 SdHoareTripleChecker+Valid, 2061 SdHoareTripleChecker+Invalid, 2281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 2211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-12 06:34:29,152 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1106 Valid, 2061 Invalid, 2281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 2211 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-12 06:34:29,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11230 states. [2022-07-12 06:34:29,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11230 to 8442. [2022-07-12 06:34:29,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8442 states, 7645 states have (on average 1.5438848920863308) internal successors, (11803), 7678 states have internal predecessors, (11803), 566 states have call successors, (566), 198 states have call predecessors, (566), 230 states have return successors, (841), 597 states have call predecessors, (841), 566 states have call successors, (841) [2022-07-12 06:34:29,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8442 states to 8442 states and 13210 transitions. [2022-07-12 06:34:29,708 INFO L78 Accepts]: Start accepts. Automaton has 8442 states and 13210 transitions. Word has length 133 [2022-07-12 06:34:29,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:34:29,709 INFO L495 AbstractCegarLoop]: Abstraction has 8442 states and 13210 transitions. [2022-07-12 06:34:29,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 5 states have internal predecessors, (123), 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) [2022-07-12 06:34:29,709 INFO L276 IsEmpty]: Start isEmpty. Operand 8442 states and 13210 transitions. [2022-07-12 06:34:29,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-07-12 06:34:29,763 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:34:29,764 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] [2022-07-12 06:34:29,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-12 06:34:29,764 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:34:29,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:34:29,764 INFO L85 PathProgramCache]: Analyzing trace with hash 644672854, now seen corresponding path program 1 times [2022-07-12 06:34:29,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:34:29,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567300556] [2022-07-12 06:34:29,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:34:29,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:34:29,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:34:29,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 06:34:29,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:34:29,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 06:34:29,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:34:29,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-12 06:34:29,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:34:29,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-12 06:34:29,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:34:29,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-12 06:34:29,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:34:29,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:34:29,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:34:29,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567300556] [2022-07-12 06:34:29,901 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567300556] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:34:29,901 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:34:29,901 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 06:34:29,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328276546] [2022-07-12 06:34:29,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:34:29,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 06:34:29,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:34:29,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 06:34:29,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 06:34:29,903 INFO L87 Difference]: Start difference. First operand 8442 states and 13210 transitions. Second operand has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 5 states have internal predecessors, (123), 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) [2022-07-12 06:34:32,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:34:32,761 INFO L93 Difference]: Finished difference Result 30374 states and 48204 transitions. [2022-07-12 06:34:32,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 06:34:32,761 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 5 states have internal predecessors, (123), 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 133 [2022-07-12 06:34:32,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:34:32,879 INFO L225 Difference]: With dead ends: 30374 [2022-07-12 06:34:32,879 INFO L226 Difference]: Without dead ends: 21948 [2022-07-12 06:34:32,920 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-12 06:34:32,922 INFO L413 NwaCegarLoop]: 695 mSDtfsCounter, 1090 mSDsluCounter, 1360 mSDsCounter, 0 mSdLazyCounter, 2203 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1105 SdHoareTripleChecker+Valid, 2055 SdHoareTripleChecker+Invalid, 2276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 2203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-12 06:34:32,922 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1105 Valid, 2055 Invalid, 2276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 2203 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-12 06:34:32,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21948 states. [2022-07-12 06:34:34,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21948 to 16637. [2022-07-12 06:34:34,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16637 states, 15072 states have (on average 1.5425291932059448) internal successors, (23249), 15137 states have internal predecessors, (23249), 1110 states have call successors, (1110), 390 states have call predecessors, (1110), 454 states have return successors, (1903), 1173 states have call predecessors, (1903), 1110 states have call successors, (1903) [2022-07-12 06:34:34,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16637 states to 16637 states and 26262 transitions. [2022-07-12 06:34:34,257 INFO L78 Accepts]: Start accepts. Automaton has 16637 states and 26262 transitions. Word has length 133 [2022-07-12 06:34:34,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:34:34,258 INFO L495 AbstractCegarLoop]: Abstraction has 16637 states and 26262 transitions. [2022-07-12 06:34:34,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 5 states have internal predecessors, (123), 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) [2022-07-12 06:34:34,259 INFO L276 IsEmpty]: Start isEmpty. Operand 16637 states and 26262 transitions. [2022-07-12 06:34:34,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-07-12 06:34:34,273 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:34:34,273 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] [2022-07-12 06:34:34,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-12 06:34:34,274 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:34:34,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:34:34,275 INFO L85 PathProgramCache]: Analyzing trace with hash -393911720, now seen corresponding path program 1 times [2022-07-12 06:34:34,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:34:34,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503952057] [2022-07-12 06:34:34,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:34:34,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:34:34,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:34:34,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 06:34:34,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:34:34,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 06:34:34,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:34:34,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-12 06:34:34,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:34:34,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-12 06:34:34,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:34:34,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-12 06:34:34,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:34:34,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:34:34,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:34:34,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503952057] [2022-07-12 06:34:34,421 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503952057] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:34:34,421 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:34:34,421 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 06:34:34,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351615896] [2022-07-12 06:34:34,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:34:34,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 06:34:34,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:34:34,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 06:34:34,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 06:34:34,425 INFO L87 Difference]: Start difference. First operand 16637 states and 26262 transitions. Second operand has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 5 states have internal predecessors, (123), 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) [2022-07-12 06:34:38,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:34:38,721 INFO L93 Difference]: Finished difference Result 59912 states and 95898 transitions. [2022-07-12 06:34:38,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 06:34:38,722 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 5 states have internal predecessors, (123), 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 133 [2022-07-12 06:34:38,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:34:38,949 INFO L225 Difference]: With dead ends: 59912 [2022-07-12 06:34:38,949 INFO L226 Difference]: Without dead ends: 43291 [2022-07-12 06:34:39,030 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-12 06:34:39,031 INFO L413 NwaCegarLoop]: 687 mSDtfsCounter, 1085 mSDsluCounter, 1360 mSDsCounter, 0 mSdLazyCounter, 2183 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1100 SdHoareTripleChecker+Valid, 2047 SdHoareTripleChecker+Invalid, 2257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 2183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-12 06:34:39,032 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1100 Valid, 2047 Invalid, 2257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 2183 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-12 06:34:39,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43291 states. [2022-07-12 06:34:40,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43291 to 33153. [2022-07-12 06:34:41,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33153 states, 30052 states have (on average 1.5426926660455211) internal successors, (46361), 30181 states have internal predecessors, (46361), 2198 states have call successors, (2198), 774 states have call predecessors, (2198), 902 states have return successors, (4513), 2325 states have call predecessors, (4513), 2198 states have call successors, (4513) [2022-07-12 06:34:41,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33153 states to 33153 states and 53072 transitions. [2022-07-12 06:34:41,155 INFO L78 Accepts]: Start accepts. Automaton has 33153 states and 53072 transitions. Word has length 133 [2022-07-12 06:34:41,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:34:41,155 INFO L495 AbstractCegarLoop]: Abstraction has 33153 states and 53072 transitions. [2022-07-12 06:34:41,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 5 states have internal predecessors, (123), 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) [2022-07-12 06:34:41,156 INFO L276 IsEmpty]: Start isEmpty. Operand 33153 states and 53072 transitions. [2022-07-12 06:34:41,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-07-12 06:34:41,181 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:34:41,181 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] [2022-07-12 06:34:41,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-12 06:34:41,181 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:34:41,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:34:41,182 INFO L85 PathProgramCache]: Analyzing trace with hash 1759195098, now seen corresponding path program 1 times [2022-07-12 06:34:41,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:34:41,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626108542] [2022-07-12 06:34:41,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:34:41,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:34:41,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:34:41,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 06:34:41,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:34:41,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 06:34:41,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:34:41,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-12 06:34:41,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:34:41,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-12 06:34:41,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:34:41,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-12 06:34:41,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:34:41,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:34:41,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:34:41,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626108542] [2022-07-12 06:34:41,624 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626108542] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:34:41,624 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:34:41,624 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 06:34:41,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025521070] [2022-07-12 06:34:41,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:34:41,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 06:34:41,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:34:41,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 06:34:41,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 06:34:41,626 INFO L87 Difference]: Start difference. First operand 33153 states and 53072 transitions. Second operand has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 5 states have internal predecessors, (123), 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) [2022-07-12 06:34:50,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:34:50,050 INFO L93 Difference]: Finished difference Result 134606 states and 216944 transitions. [2022-07-12 06:34:50,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 06:34:50,051 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 5 states have internal predecessors, (123), 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 133 [2022-07-12 06:34:50,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:34:50,573 INFO L225 Difference]: With dead ends: 134606 [2022-07-12 06:34:50,573 INFO L226 Difference]: Without dead ends: 101469 [2022-07-12 06:34:50,679 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 [2022-07-12 06:34:50,679 INFO L413 NwaCegarLoop]: 680 mSDtfsCounter, 1414 mSDsluCounter, 1352 mSDsCounter, 0 mSdLazyCounter, 2168 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1438 SdHoareTripleChecker+Valid, 2032 SdHoareTripleChecker+Invalid, 2247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 2168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-12 06:34:50,680 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1438 Valid, 2032 Invalid, 2247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 2168 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-12 06:34:50,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101469 states. [2022-07-12 06:34:55,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101469 to 65926. [2022-07-12 06:34:55,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65926 states, 59881 states have (on average 1.54498087874284) internal successors, (92515), 60138 states have internal predecessors, (92515), 4246 states have call successors, (4246), 1542 states have call predecessors, (4246), 1798 states have return successors, (11063), 4501 states have call predecessors, (11063), 4246 states have call successors, (11063) [2022-07-12 06:34:55,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65926 states to 65926 states and 107824 transitions. [2022-07-12 06:34:55,957 INFO L78 Accepts]: Start accepts. Automaton has 65926 states and 107824 transitions. Word has length 133 [2022-07-12 06:34:55,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:34:55,960 INFO L495 AbstractCegarLoop]: Abstraction has 65926 states and 107824 transitions. [2022-07-12 06:34:55,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 5 states have internal predecessors, (123), 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) [2022-07-12 06:34:55,960 INFO L276 IsEmpty]: Start isEmpty. Operand 65926 states and 107824 transitions. [2022-07-12 06:34:56,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-07-12 06:34:56,012 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:34:56,012 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] [2022-07-12 06:34:56,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-12 06:34:56,013 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:34:56,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:34:56,013 INFO L85 PathProgramCache]: Analyzing trace with hash 1135913496, now seen corresponding path program 1 times [2022-07-12 06:34:56,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:34:56,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439580211] [2022-07-12 06:34:56,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:34:56,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:34:56,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:34:56,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 06:34:56,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:34:56,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 06:34:56,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:34:56,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-12 06:34:56,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:34:56,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-12 06:34:56,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:34:56,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-12 06:34:56,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:34:56,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:34:56,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:34:56,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439580211] [2022-07-12 06:34:56,138 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439580211] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:34:56,138 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:34:56,138 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 06:34:56,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585428801] [2022-07-12 06:34:56,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:34:56,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 06:34:56,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:34:56,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 06:34:56,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-12 06:34:56,140 INFO L87 Difference]: Start difference. First operand 65926 states and 107824 transitions. Second operand has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 5 states have internal predecessors, (123), 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) [2022-07-12 06:35:02,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:35:02,434 INFO L93 Difference]: Finished difference Result 152499 states and 255671 transitions. [2022-07-12 06:35:02,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 06:35:02,435 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 5 states have internal predecessors, (123), 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 133 [2022-07-12 06:35:02,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:35:02,836 INFO L225 Difference]: With dead ends: 152499 [2022-07-12 06:35:02,837 INFO L226 Difference]: Without dead ends: 86589 [2022-07-12 06:35:03,007 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-12 06:35:03,008 INFO L413 NwaCegarLoop]: 415 mSDtfsCounter, 944 mSDsluCounter, 531 mSDsCounter, 0 mSdLazyCounter, 889 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 960 SdHoareTripleChecker+Valid, 946 SdHoareTripleChecker+Invalid, 991 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 889 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-12 06:35:03,009 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [960 Valid, 946 Invalid, 991 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 889 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-12 06:35:03,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86589 states. [2022-07-12 06:35:07,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86589 to 65926. [2022-07-12 06:35:07,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65926 states, 59881 states have (on average 1.5406890332492778) internal successors, (92258), 60138 states have internal predecessors, (92258), 4246 states have call successors, (4246), 1542 states have call predecessors, (4246), 1798 states have return successors, (11063), 4501 states have call predecessors, (11063), 4246 states have call successors, (11063) [2022-07-12 06:35:07,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65926 states to 65926 states and 107567 transitions. [2022-07-12 06:35:07,740 INFO L78 Accepts]: Start accepts. Automaton has 65926 states and 107567 transitions. Word has length 133 [2022-07-12 06:35:07,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:35:07,741 INFO L495 AbstractCegarLoop]: Abstraction has 65926 states and 107567 transitions. [2022-07-12 06:35:07,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 5 states have internal predecessors, (123), 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) [2022-07-12 06:35:07,741 INFO L276 IsEmpty]: Start isEmpty. Operand 65926 states and 107567 transitions. [2022-07-12 06:35:07,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-07-12 06:35:07,786 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:35:07,786 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] [2022-07-12 06:35:07,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-12 06:35:07,787 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:35:07,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:35:07,787 INFO L85 PathProgramCache]: Analyzing trace with hash 1254354970, now seen corresponding path program 1 times [2022-07-12 06:35:07,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:35:07,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485364289] [2022-07-12 06:35:07,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:35:07,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:35:07,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:35:07,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 06:35:07,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:35:07,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 06:35:07,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:35:07,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-12 06:35:07,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:35:07,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-12 06:35:07,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:35:07,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-12 06:35:07,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:35:07,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:35:07,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:35:07,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485364289] [2022-07-12 06:35:07,901 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485364289] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:35:07,901 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:35:07,902 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 06:35:07,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355138201] [2022-07-12 06:35:07,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:35:07,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 06:35:07,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:35:07,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 06:35:07,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 06:35:07,904 INFO L87 Difference]: Start difference. First operand 65926 states and 107567 transitions. Second operand has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 5 states have internal predecessors, (123), 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)