./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label48+token_ring.12.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e19ca921 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/combinations/Problem05_label48+token_ring.12.cil-2.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 12040a15adbfbac5c2e9f20bae26c10925cfaa6501d267b475499f3f937f66c2 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-e19ca92 [2021-12-22 12:42:14,973 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 12:42:14,976 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 12:42:15,011 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 12:42:15,011 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 12:42:15,012 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 12:42:15,014 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 12:42:15,015 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 12:42:15,017 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 12:42:15,018 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 12:42:15,018 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 12:42:15,019 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 12:42:15,020 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 12:42:15,021 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 12:42:15,022 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 12:42:15,023 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 12:42:15,023 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 12:42:15,024 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 12:42:15,025 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 12:42:15,027 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 12:42:15,028 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 12:42:15,029 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 12:42:15,030 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 12:42:15,030 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 12:42:15,033 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 12:42:15,033 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 12:42:15,033 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 12:42:15,034 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 12:42:15,034 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 12:42:15,035 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 12:42:15,035 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 12:42:15,036 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 12:42:15,036 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 12:42:15,037 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 12:42:15,038 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 12:42:15,038 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 12:42:15,039 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 12:42:15,039 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 12:42:15,039 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 12:42:15,040 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 12:42:15,041 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 12:42:15,041 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-22 12:42:15,059 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 12:42:15,060 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 12:42:15,060 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 12:42:15,060 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 12:42:15,061 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 12:42:15,061 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 12:42:15,062 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 12:42:15,062 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 12:42:15,062 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 12:42:15,063 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 12:42:15,063 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-22 12:42:15,063 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-22 12:42:15,063 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-22 12:42:15,064 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 12:42:15,064 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-22 12:42:15,064 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 12:42:15,064 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-22 12:42:15,065 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-22 12:42:15,065 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-22 12:42:15,065 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 12:42:15,065 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-22 12:42:15,065 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 12:42:15,066 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 12:42:15,066 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 12:42:15,066 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 12:42:15,066 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 12:42:15,067 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 12:42:15,067 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-22 12:42:15,067 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-22 12:42:15,067 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-22 12:42:15,068 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-22 12:42:15,068 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-22 12:42:15,068 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-22 12:42:15,068 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 12:42:15,068 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 12040a15adbfbac5c2e9f20bae26c10925cfaa6501d267b475499f3f937f66c2 [2021-12-22 12:42:15,278 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 12:42:15,302 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 12:42:15,304 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 12:42:15,305 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 12:42:15,307 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 12:42:15,308 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label48+token_ring.12.cil-2.c [2021-12-22 12:42:15,380 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e4f456329/83d477fdcd7a405baf691b799bf1dfc3/FLAG7a4bee94d [2021-12-22 12:42:16,146 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 12:42:16,148 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label48+token_ring.12.cil-2.c [2021-12-22 12:42:16,202 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e4f456329/83d477fdcd7a405baf691b799bf1dfc3/FLAG7a4bee94d [2021-12-22 12:42:16,656 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e4f456329/83d477fdcd7a405baf691b799bf1dfc3 [2021-12-22 12:42:16,658 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 12:42:16,659 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 12:42:16,663 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 12:42:16,664 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 12:42:16,666 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 12:42:16,666 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 12:42:16" (1/1) ... [2021-12-22 12:42:16,667 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13f365c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:42:16, skipping insertion in model container [2021-12-22 12:42:16,667 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 12:42:16" (1/1) ... [2021-12-22 12:42:16,671 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 12:42:16,843 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 12:42:18,313 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/combinations/Problem05_label48+token_ring.12.cil-2.c[375709,375722] [2021-12-22 12:42:18,341 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/combinations/Problem05_label48+token_ring.12.cil-2.c[383339,383352] [2021-12-22 12:42:18,643 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 12:42:18,655 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 12:42:19,369 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/combinations/Problem05_label48+token_ring.12.cil-2.c[375709,375722] [2021-12-22 12:42:19,379 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/combinations/Problem05_label48+token_ring.12.cil-2.c[383339,383352] [2021-12-22 12:42:19,401 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 12:42:19,458 INFO L208 MainTranslator]: Completed translation [2021-12-22 12:42:19,459 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:42:19 WrapperNode [2021-12-22 12:42:19,459 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 12:42:19,460 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 12:42:19,460 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 12:42:19,460 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 12:42:19,466 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:42:19" (1/1) ... [2021-12-22 12:42:19,561 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:42:19" (1/1) ... [2021-12-22 12:42:20,102 INFO L137 Inliner]: procedures = 68, calls = 77, calls flagged for inlining = 46, calls inlined = 46, statements flattened = 13199 [2021-12-22 12:42:20,102 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 12:42:20,103 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 12:42:20,104 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 12:42:20,104 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 12:42:20,111 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:42:19" (1/1) ... [2021-12-22 12:42:20,112 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:42:19" (1/1) ... [2021-12-22 12:42:20,176 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:42:19" (1/1) ... [2021-12-22 12:42:20,177 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:42:19" (1/1) ... [2021-12-22 12:42:20,428 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:42:19" (1/1) ... [2021-12-22 12:42:20,471 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:42:19" (1/1) ... [2021-12-22 12:42:20,496 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:42:19" (1/1) ... [2021-12-22 12:42:20,540 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 12:42:20,541 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 12:42:20,541 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 12:42:20,541 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 12:42:20,542 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:42:19" (1/1) ... [2021-12-22 12:42:20,550 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 12:42:20,558 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 12:42:20,576 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) [2021-12-22 12:42:20,594 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 [2021-12-22 12:42:20,620 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-22 12:42:20,621 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-12-22 12:42:20,621 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-12-22 12:42:20,621 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-22 12:42:20,621 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-22 12:42:20,621 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-12-22 12:42:20,621 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-12-22 12:42:20,621 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-12-22 12:42:20,622 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-12-22 12:42:20,622 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-12-22 12:42:20,622 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-12-22 12:42:20,622 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-12-22 12:42:20,622 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-12-22 12:42:20,622 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-22 12:42:20,622 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 12:42:20,623 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 12:42:20,758 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 12:42:20,760 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 12:42:26,654 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 12:42:26,682 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 12:42:26,683 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2021-12-22 12:42:26,686 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 12:42:26 BoogieIcfgContainer [2021-12-22 12:42:26,686 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 12:42:26,688 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-22 12:42:26,688 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-22 12:42:26,691 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-22 12:42:26,691 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 12:42:16" (1/3) ... [2021-12-22 12:42:26,692 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48a2ee7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 12:42:26, skipping insertion in model container [2021-12-22 12:42:26,692 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:42:19" (2/3) ... [2021-12-22 12:42:26,692 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48a2ee7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 12:42:26, skipping insertion in model container [2021-12-22 12:42:26,692 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 12:42:26" (3/3) ... [2021-12-22 12:42:26,694 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label48+token_ring.12.cil-2.c [2021-12-22 12:42:26,698 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-22 12:42:26,698 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-22 12:42:26,743 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-22 12:42:26,748 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-22 12:42:26,748 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-22 12:42:26,791 INFO L276 IsEmpty]: Start isEmpty. Operand has 2565 states, 2530 states have (on average 1.8430830039525692) internal successors, (4663), 2533 states have internal predecessors, (4663), 26 states have call successors, (26), 6 states have call predecessors, (26), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2021-12-22 12:42:26,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-12-22 12:42:26,809 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:42:26,809 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:42:26,810 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:42:26,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:42:26,814 INFO L85 PathProgramCache]: Analyzing trace with hash 10619845, now seen corresponding path program 1 times [2021-12-22 12:42:26,821 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:42:26,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719520829] [2021-12-22 12:42:26,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:42:26,823 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:42:26,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:42:27,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 12:42:27,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:42:27,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-22 12:42:27,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:42:27,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-22 12:42:27,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:42:27,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-22 12:42:27,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:42:27,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-22 12:42:27,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:42:27,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:42:27,332 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:42:27,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719520829] [2021-12-22 12:42:27,333 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719520829] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:42:27,334 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:42:27,334 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-22 12:42:27,335 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207434525] [2021-12-22 12:42:27,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:42:27,339 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 12:42:27,340 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:42:27,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 12:42:27,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-22 12:42:27,369 INFO L87 Difference]: Start difference. First operand has 2565 states, 2530 states have (on average 1.8430830039525692) internal successors, (4663), 2533 states have internal predecessors, (4663), 26 states have call successors, (26), 6 states have call predecessors, (26), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 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) [2021-12-22 12:42:29,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:42:29,185 INFO L93 Difference]: Finished difference Result 5266 states and 9664 transitions. [2021-12-22 12:42:29,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-22 12:42:29,188 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 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 178 [2021-12-22 12:42:29,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:42:29,210 INFO L225 Difference]: With dead ends: 5266 [2021-12-22 12:42:29,210 INFO L226 Difference]: Without dead ends: 2640 [2021-12-22 12:42:29,218 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-22 12:42:29,221 INFO L933 BasicCegarLoop]: 4683 mSDtfsCounter, 1034 mSDsluCounter, 12485 mSDsCounter, 0 mSdLazyCounter, 703 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1058 SdHoareTripleChecker+Valid, 17168 SdHoareTripleChecker+Invalid, 763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 703 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-22 12:42:29,222 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1058 Valid, 17168 Invalid, 763 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [60 Valid, 703 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-22 12:42:29,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2640 states. [2021-12-22 12:42:29,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2640 to 2498. [2021-12-22 12:42:29,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2498 states, 2464 states have (on average 1.8262987012987013) internal successors, (4500), 2466 states have internal predecessors, (4500), 26 states have call successors, (26), 6 states have call predecessors, (26), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2021-12-22 12:42:29,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2498 states to 2498 states and 4552 transitions. [2021-12-22 12:42:29,345 INFO L78 Accepts]: Start accepts. Automaton has 2498 states and 4552 transitions. Word has length 178 [2021-12-22 12:42:29,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:42:29,345 INFO L470 AbstractCegarLoop]: Abstraction has 2498 states and 4552 transitions. [2021-12-22 12:42:29,346 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 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) [2021-12-22 12:42:29,347 INFO L276 IsEmpty]: Start isEmpty. Operand 2498 states and 4552 transitions. [2021-12-22 12:42:29,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-12-22 12:42:29,357 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:42:29,357 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:42:29,358 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-22 12:42:29,358 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:42:29,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:42:29,361 INFO L85 PathProgramCache]: Analyzing trace with hash -79440445, now seen corresponding path program 1 times [2021-12-22 12:42:29,361 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:42:29,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118306773] [2021-12-22 12:42:29,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:42:29,362 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:42:29,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:42:29,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 12:42:29,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:42:29,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-22 12:42:29,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:42:29,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-22 12:42:29,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:42:29,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-22 12:42:29,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:42:29,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-22 12:42:29,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:42:29,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:42:29,625 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:42:29,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118306773] [2021-12-22 12:42:29,626 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118306773] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:42:29,626 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:42:29,626 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-22 12:42:29,626 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072983911] [2021-12-22 12:42:29,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:42:29,628 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 12:42:29,629 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:42:29,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 12:42:29,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-22 12:42:29,631 INFO L87 Difference]: Start difference. First operand 2498 states and 4552 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 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) [2021-12-22 12:42:31,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:42:31,143 INFO L93 Difference]: Finished difference Result 3002 states and 5366 transitions. [2021-12-22 12:42:31,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-22 12:42:31,144 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 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 178 [2021-12-22 12:42:31,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:42:31,157 INFO L225 Difference]: With dead ends: 3002 [2021-12-22 12:42:31,157 INFO L226 Difference]: Without dead ends: 2640 [2021-12-22 12:42:31,159 INFO L932 BasicCegarLoop]: 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 [2021-12-22 12:42:31,161 INFO L933 BasicCegarLoop]: 4613 mSDtfsCounter, 1020 mSDsluCounter, 12282 mSDsCounter, 0 mSdLazyCounter, 702 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1044 SdHoareTripleChecker+Valid, 16895 SdHoareTripleChecker+Invalid, 762 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 702 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-22 12:42:31,161 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1044 Valid, 16895 Invalid, 762 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [60 Valid, 702 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-22 12:42:31,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2640 states. [2021-12-22 12:42:31,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2640 to 2498. [2021-12-22 12:42:31,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2498 states, 2464 states have (on average 1.8258928571428572) internal successors, (4499), 2466 states have internal predecessors, (4499), 26 states have call successors, (26), 6 states have call predecessors, (26), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2021-12-22 12:42:31,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2498 states to 2498 states and 4551 transitions. [2021-12-22 12:42:31,242 INFO L78 Accepts]: Start accepts. Automaton has 2498 states and 4551 transitions. Word has length 178 [2021-12-22 12:42:31,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:42:31,242 INFO L470 AbstractCegarLoop]: Abstraction has 2498 states and 4551 transitions. [2021-12-22 12:42:31,243 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 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) [2021-12-22 12:42:31,243 INFO L276 IsEmpty]: Start isEmpty. Operand 2498 states and 4551 transitions. [2021-12-22 12:42:31,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-12-22 12:42:31,245 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:42:31,245 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:42:31,246 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-22 12:42:31,246 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:42:31,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:42:31,247 INFO L85 PathProgramCache]: Analyzing trace with hash -1483309631, now seen corresponding path program 1 times [2021-12-22 12:42:31,247 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:42:31,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937058979] [2021-12-22 12:42:31,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:42:31,248 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:42:31,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:42:31,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 12:42:31,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:42:31,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-22 12:42:31,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:42:31,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-22 12:42:31,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:42:31,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-22 12:42:31,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:42:31,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-22 12:42:31,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:42:31,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:42:31,426 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:42:31,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937058979] [2021-12-22 12:42:31,427 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937058979] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:42:31,427 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:42:31,427 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-22 12:42:31,427 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347547066] [2021-12-22 12:42:31,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:42:31,428 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 12:42:31,428 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:42:31,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 12:42:31,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-22 12:42:31,429 INFO L87 Difference]: Start difference. First operand 2498 states and 4551 transitions. Second operand has 6 states, 6 states have (on average 28.0) internal successors, (168), 4 states have internal predecessors, (168), 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) [2021-12-22 12:42:34,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:42:34,211 INFO L93 Difference]: Finished difference Result 3514 states and 6198 transitions. [2021-12-22 12:42:34,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-22 12:42:34,211 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 28.0) internal successors, (168), 4 states have internal predecessors, (168), 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 178 [2021-12-22 12:42:34,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:42:34,226 INFO L225 Difference]: With dead ends: 3514 [2021-12-22 12:42:34,227 INFO L226 Difference]: Without dead ends: 3157 [2021-12-22 12:42:34,230 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-12-22 12:42:34,231 INFO L933 BasicCegarLoop]: 4665 mSDtfsCounter, 5509 mSDsluCounter, 12878 mSDsCounter, 0 mSdLazyCounter, 1952 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5528 SdHoareTripleChecker+Valid, 17543 SdHoareTripleChecker+Invalid, 2068 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 1952 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-12-22 12:42:34,232 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5528 Valid, 17543 Invalid, 2068 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [116 Valid, 1952 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-12-22 12:42:34,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3157 states. [2021-12-22 12:42:34,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3157 to 2874. [2021-12-22 12:42:34,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2874 states, 2812 states have (on average 1.7976529160739687) internal successors, (5055), 2815 states have internal predecessors, (5055), 47 states have call successors, (47), 12 states have call predecessors, (47), 13 states have return successors, (50), 47 states have call predecessors, (50), 47 states have call successors, (50) [2021-12-22 12:42:34,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2874 states to 2874 states and 5152 transitions. [2021-12-22 12:42:34,334 INFO L78 Accepts]: Start accepts. Automaton has 2874 states and 5152 transitions. Word has length 178 [2021-12-22 12:42:34,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:42:34,334 INFO L470 AbstractCegarLoop]: Abstraction has 2874 states and 5152 transitions. [2021-12-22 12:42:34,335 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.0) internal successors, (168), 4 states have internal predecessors, (168), 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) [2021-12-22 12:42:34,335 INFO L276 IsEmpty]: Start isEmpty. Operand 2874 states and 5152 transitions. [2021-12-22 12:42:34,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-12-22 12:42:34,337 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:42:34,337 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:42:34,337 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-22 12:42:34,337 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:42:34,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:42:34,338 INFO L85 PathProgramCache]: Analyzing trace with hash 1935672389, now seen corresponding path program 1 times [2021-12-22 12:42:34,338 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:42:34,338 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540544605] [2021-12-22 12:42:34,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:42:34,339 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:42:34,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:42:34,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 12:42:34,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:42:34,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-22 12:42:34,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:42:34,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-22 12:42:34,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:42:34,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-22 12:42:34,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:42:34,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-22 12:42:34,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:42:34,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:42:34,517 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:42:34,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540544605] [2021-12-22 12:42:34,517 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540544605] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:42:34,518 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:42:34,518 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 12:42:34,518 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698919200] [2021-12-22 12:42:34,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:42:34,519 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 12:42:34,519 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:42:34,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 12:42:34,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 12:42:34,520 INFO L87 Difference]: Start difference. First operand 2874 states and 5152 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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) [2021-12-22 12:42:37,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:42:37,890 INFO L93 Difference]: Finished difference Result 4427 states and 7672 transitions. [2021-12-22 12:42:37,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-22 12:42:37,891 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 178 [2021-12-22 12:42:37,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:42:37,906 INFO L225 Difference]: With dead ends: 4427 [2021-12-22 12:42:37,907 INFO L226 Difference]: Without dead ends: 3694 [2021-12-22 12:42:37,910 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-22 12:42:37,911 INFO L933 BasicCegarLoop]: 4964 mSDtfsCounter, 5539 mSDsluCounter, 17768 mSDsCounter, 0 mSdLazyCounter, 3059 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5558 SdHoareTripleChecker+Valid, 22732 SdHoareTripleChecker+Invalid, 3135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 3059 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-12-22 12:42:37,911 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5558 Valid, 22732 Invalid, 3135 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [76 Valid, 3059 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2021-12-22 12:42:37,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3694 states. [2021-12-22 12:42:38,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3694 to 3223. [2021-12-22 12:42:38,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3223 states, 3133 states have (on average 1.7736993297159271) internal successors, (5557), 3137 states have internal predecessors, (5557), 68 states have call successors, (68), 18 states have call predecessors, (68), 20 states have return successors, (73), 69 states have call predecessors, (73), 68 states have call successors, (73) [2021-12-22 12:42:38,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3223 states to 3223 states and 5698 transitions. [2021-12-22 12:42:38,048 INFO L78 Accepts]: Start accepts. Automaton has 3223 states and 5698 transitions. Word has length 178 [2021-12-22 12:42:38,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:42:38,049 INFO L470 AbstractCegarLoop]: Abstraction has 3223 states and 5698 transitions. [2021-12-22 12:42:38,053 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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) [2021-12-22 12:42:38,054 INFO L276 IsEmpty]: Start isEmpty. Operand 3223 states and 5698 transitions. [2021-12-22 12:42:38,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-12-22 12:42:38,056 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:42:38,057 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:42:38,057 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-22 12:42:38,057 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:42:38,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:42:38,058 INFO L85 PathProgramCache]: Analyzing trace with hash 1324403331, now seen corresponding path program 1 times [2021-12-22 12:42:38,058 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:42:38,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537799619] [2021-12-22 12:42:38,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:42:38,059 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:42:38,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:42:38,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 12:42:38,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:42:38,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-22 12:42:38,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:42:38,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-22 12:42:38,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:42:38,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-22 12:42:38,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:42:38,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-22 12:42:38,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:42:38,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:42:38,240 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:42:38,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537799619] [2021-12-22 12:42:38,240 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537799619] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:42:38,241 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:42:38,242 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 12:42:38,242 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215283004] [2021-12-22 12:42:38,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:42:38,242 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 12:42:38,243 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:42:38,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 12:42:38,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 12:42:38,244 INFO L87 Difference]: Start difference. First operand 3223 states and 5698 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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) [2021-12-22 12:42:41,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:42:41,271 INFO L93 Difference]: Finished difference Result 5773 states and 9826 transitions. [2021-12-22 12:42:41,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-22 12:42:41,272 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 178 [2021-12-22 12:42:41,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:42:41,291 INFO L225 Difference]: With dead ends: 5773 [2021-12-22 12:42:41,292 INFO L226 Difference]: Without dead ends: 4691 [2021-12-22 12:42:41,296 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-22 12:42:41,297 INFO L933 BasicCegarLoop]: 4709 mSDtfsCounter, 5648 mSDsluCounter, 17123 mSDsCounter, 0 mSdLazyCounter, 2718 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5667 SdHoareTripleChecker+Valid, 21832 SdHoareTripleChecker+Invalid, 2833 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 2718 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-12-22 12:42:41,297 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5667 Valid, 21832 Invalid, 2833 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 2718 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-12-22 12:42:41,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4691 states. [2021-12-22 12:42:41,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4691 to 3922. [2021-12-22 12:42:41,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3922 states, 3776 states have (on average 1.7378177966101696) internal successors, (6562), 3782 states have internal predecessors, (6562), 110 states have call successors, (110), 30 states have call predecessors, (110), 34 states have return successors, (123), 113 states have call predecessors, (123), 110 states have call successors, (123) [2021-12-22 12:42:41,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3922 states to 3922 states and 6795 transitions. [2021-12-22 12:42:41,477 INFO L78 Accepts]: Start accepts. Automaton has 3922 states and 6795 transitions. Word has length 178 [2021-12-22 12:42:41,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:42:41,478 INFO L470 AbstractCegarLoop]: Abstraction has 3922 states and 6795 transitions. [2021-12-22 12:42:41,478 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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) [2021-12-22 12:42:41,478 INFO L276 IsEmpty]: Start isEmpty. Operand 3922 states and 6795 transitions. [2021-12-22 12:42:41,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-12-22 12:42:41,480 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:42:41,481 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:42:41,481 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-22 12:42:41,481 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:42:41,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:42:41,482 INFO L85 PathProgramCache]: Analyzing trace with hash -80788347, now seen corresponding path program 1 times [2021-12-22 12:42:41,482 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:42:41,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103250250] [2021-12-22 12:42:41,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:42:41,482 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:42:41,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:42:41,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 12:42:41,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:42:41,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-22 12:42:41,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:42:41,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-22 12:42:41,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:42:41,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-22 12:42:41,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:42:41,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-22 12:42:41,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:42:41,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:42:41,641 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:42:41,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103250250] [2021-12-22 12:42:41,641 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103250250] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:42:41,641 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:42:41,641 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 12:42:41,642 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711090548] [2021-12-22 12:42:41,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:42:41,642 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 12:42:41,642 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:42:41,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 12:42:41,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 12:42:41,643 INFO L87 Difference]: Start difference. First operand 3922 states and 6795 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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) [2021-12-22 12:42:45,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:42:45,034 INFO L93 Difference]: Finished difference Result 8360 states and 13939 transitions. [2021-12-22 12:42:45,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-22 12:42:45,040 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 178 [2021-12-22 12:42:45,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:42:45,067 INFO L225 Difference]: With dead ends: 8360 [2021-12-22 12:42:45,068 INFO L226 Difference]: Without dead ends: 6579 [2021-12-22 12:42:45,076 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-22 12:42:45,076 INFO L933 BasicCegarLoop]: 4952 mSDtfsCounter, 5534 mSDsluCounter, 17764 mSDsCounter, 0 mSdLazyCounter, 3062 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5553 SdHoareTripleChecker+Valid, 22716 SdHoareTripleChecker+Invalid, 3143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 3062 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-12-22 12:42:45,080 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5553 Valid, 22716 Invalid, 3143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 3062 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-12-22 12:42:45,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6579 states. [2021-12-22 12:42:45,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6579 to 5321. [2021-12-22 12:42:45,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5321 states, 5063 states have (on average 1.693067351372704) internal successors, (8572), 5073 states have internal predecessors, (8572), 194 states have call successors, (194), 54 states have call predecessors, (194), 62 states have return successors, (229), 201 states have call predecessors, (229), 194 states have call successors, (229) [2021-12-22 12:42:45,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5321 states to 5321 states and 8995 transitions. [2021-12-22 12:42:45,419 INFO L78 Accepts]: Start accepts. Automaton has 5321 states and 8995 transitions. Word has length 178 [2021-12-22 12:42:45,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:42:45,419 INFO L470 AbstractCegarLoop]: Abstraction has 5321 states and 8995 transitions. [2021-12-22 12:42:45,420 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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) [2021-12-22 12:42:45,420 INFO L276 IsEmpty]: Start isEmpty. Operand 5321 states and 8995 transitions. [2021-12-22 12:42:45,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-12-22 12:42:45,424 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:42:45,424 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:42:45,424 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-22 12:42:45,425 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:42:45,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:42:45,425 INFO L85 PathProgramCache]: Analyzing trace with hash 1813545539, now seen corresponding path program 1 times [2021-12-22 12:42:45,425 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:42:45,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304733931] [2021-12-22 12:42:45,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:42:45,427 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:42:45,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:42:45,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 12:42:45,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:42:45,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-22 12:42:45,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:42:45,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-22 12:42:45,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:42:45,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-22 12:42:45,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:42:45,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-22 12:42:45,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:42:45,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:42:45,611 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:42:45,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304733931] [2021-12-22 12:42:45,611 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304733931] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:42:45,611 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:42:45,611 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 12:42:45,612 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867029842] [2021-12-22 12:42:45,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:42:45,613 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 12:42:45,613 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:42:45,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 12:42:45,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 12:42:45,614 INFO L87 Difference]: Start difference. First operand 5321 states and 8995 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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) [2021-12-22 12:42:49,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:42:49,132 INFO L93 Difference]: Finished difference Result 13526 states and 22169 transitions. [2021-12-22 12:42:49,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-22 12:42:49,133 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 178 [2021-12-22 12:42:49,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:42:49,167 INFO L225 Difference]: With dead ends: 13526 [2021-12-22 12:42:49,168 INFO L226 Difference]: Without dead ends: 10346 [2021-12-22 12:42:49,182 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-22 12:42:49,183 INFO L933 BasicCegarLoop]: 4944 mSDtfsCounter, 5529 mSDsluCounter, 17764 mSDsCounter, 0 mSdLazyCounter, 3042 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5548 SdHoareTripleChecker+Valid, 22708 SdHoareTripleChecker+Invalid, 3124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 3042 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-12-22 12:42:49,183 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5548 Valid, 22708 Invalid, 3124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 3042 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-12-22 12:42:49,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10346 states. [2021-12-22 12:42:49,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10346 to 8133. [2021-12-22 12:42:49,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8133 states, 7651 states have (on average 1.6489347797673506) internal successors, (12616), 7669 states have internal predecessors, (12616), 362 states have call successors, (362), 102 states have call predecessors, (362), 118 states have return successors, (459), 377 states have call predecessors, (459), 362 states have call successors, (459) [2021-12-22 12:42:49,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8133 states to 8133 states and 13437 transitions. [2021-12-22 12:42:49,714 INFO L78 Accepts]: Start accepts. Automaton has 8133 states and 13437 transitions. Word has length 178 [2021-12-22 12:42:49,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:42:49,714 INFO L470 AbstractCegarLoop]: Abstraction has 8133 states and 13437 transitions. [2021-12-22 12:42:49,715 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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) [2021-12-22 12:42:49,715 INFO L276 IsEmpty]: Start isEmpty. Operand 8133 states and 13437 transitions. [2021-12-22 12:42:49,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-12-22 12:42:49,719 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:42:49,719 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:42:49,720 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-22 12:42:49,720 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:42:49,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:42:49,720 INFO L85 PathProgramCache]: Analyzing trace with hash 890378113, now seen corresponding path program 1 times [2021-12-22 12:42:49,721 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:42:49,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762040496] [2021-12-22 12:42:49,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:42:49,721 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:42:49,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:42:49,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 12:42:49,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:42:49,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-22 12:42:49,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:42:49,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-22 12:42:49,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:42:49,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-22 12:42:49,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:42:49,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-22 12:42:49,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:42:49,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:42:49,882 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:42:49,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762040496] [2021-12-22 12:42:49,882 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762040496] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:42:49,882 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:42:49,883 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 12:42:49,883 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656694179] [2021-12-22 12:42:49,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:42:49,883 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 12:42:49,883 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:42:49,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 12:42:49,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 12:42:49,884 INFO L87 Difference]: Start difference. First operand 8133 states and 13437 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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) [2021-12-22 12:42:53,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:42:53,703 INFO L93 Difference]: Finished difference Result 23876 states and 38721 transitions. [2021-12-22 12:42:53,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-22 12:42:53,703 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 178 [2021-12-22 12:42:53,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:42:53,769 INFO L225 Difference]: With dead ends: 23876 [2021-12-22 12:42:53,769 INFO L226 Difference]: Without dead ends: 17884 [2021-12-22 12:42:53,796 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-22 12:42:53,797 INFO L933 BasicCegarLoop]: 4939 mSDtfsCounter, 5528 mSDsluCounter, 17764 mSDsCounter, 0 mSdLazyCounter, 3034 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5547 SdHoareTripleChecker+Valid, 22703 SdHoareTripleChecker+Invalid, 3116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 3034 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-12-22 12:42:53,798 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5547 Valid, 22703 Invalid, 3116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 3034 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-12-22 12:42:53,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17884 states. [2021-12-22 12:42:54,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17884 to 13770. [2021-12-22 12:42:54,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13770 states, 12840 states have (on average 1.6138629283489097) internal successors, (20722), 12874 states have internal predecessors, (20722), 698 states have call successors, (698), 198 states have call predecessors, (698), 230 states have return successors, (973), 729 states have call predecessors, (973), 698 states have call successors, (973) [2021-12-22 12:42:54,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13770 states to 13770 states and 22393 transitions. [2021-12-22 12:42:54,780 INFO L78 Accepts]: Start accepts. Automaton has 13770 states and 22393 transitions. Word has length 178 [2021-12-22 12:42:54,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:42:54,780 INFO L470 AbstractCegarLoop]: Abstraction has 13770 states and 22393 transitions. [2021-12-22 12:42:54,780 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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) [2021-12-22 12:42:54,781 INFO L276 IsEmpty]: Start isEmpty. Operand 13770 states and 22393 transitions. [2021-12-22 12:42:54,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-12-22 12:42:54,788 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:42:54,789 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:42:54,789 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-22 12:42:54,789 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:42:54,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:42:54,790 INFO L85 PathProgramCache]: Analyzing trace with hash 1276240515, now seen corresponding path program 1 times [2021-12-22 12:42:54,790 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:42:54,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661229689] [2021-12-22 12:42:54,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:42:54,790 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:42:54,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:42:54,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 12:42:54,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:42:54,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-22 12:42:54,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:42:54,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-22 12:42:54,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:42:54,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-22 12:42:54,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:42:54,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-22 12:42:54,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:42:54,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:42:54,924 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:42:54,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661229689] [2021-12-22 12:42:54,925 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661229689] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:42:54,925 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:42:54,925 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 12:42:54,925 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340288628] [2021-12-22 12:42:54,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:42:54,926 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 12:42:54,926 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:42:54,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 12:42:54,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-22 12:42:54,927 INFO L87 Difference]: Start difference. First operand 13770 states and 22393 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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) [2021-12-22 12:42:57,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:42:57,840 INFO L93 Difference]: Finished difference Result 29766 states and 48386 transitions. [2021-12-22 12:42:57,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-22 12:42:57,841 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 178 [2021-12-22 12:42:57,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:42:57,900 INFO L225 Difference]: With dead ends: 29766 [2021-12-22 12:42:57,900 INFO L226 Difference]: Without dead ends: 18137 [2021-12-22 12:42:57,941 INFO L932 BasicCegarLoop]: 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 [2021-12-22 12:42:57,943 INFO L933 BasicCegarLoop]: 4589 mSDtfsCounter, 5079 mSDsluCounter, 16761 mSDsCounter, 0 mSdLazyCounter, 1474 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5099 SdHoareTripleChecker+Valid, 21350 SdHoareTripleChecker+Invalid, 1559 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 1474 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-22 12:42:57,943 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5099 Valid, 21350 Invalid, 1559 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 1474 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-22 12:42:57,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18137 states. [2021-12-22 12:42:58,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18137 to 13770. [2021-12-22 12:42:58,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13770 states, 12840 states have (on average 1.6112928348909656) internal successors, (20689), 12874 states have internal predecessors, (20689), 698 states have call successors, (698), 198 states have call predecessors, (698), 230 states have return successors, (973), 729 states have call predecessors, (973), 698 states have call successors, (973) [2021-12-22 12:42:58,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13770 states to 13770 states and 22360 transitions. [2021-12-22 12:42:58,867 INFO L78 Accepts]: Start accepts. Automaton has 13770 states and 22360 transitions. Word has length 178 [2021-12-22 12:42:58,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:42:58,868 INFO L470 AbstractCegarLoop]: Abstraction has 13770 states and 22360 transitions. [2021-12-22 12:42:58,868 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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) [2021-12-22 12:42:58,868 INFO L276 IsEmpty]: Start isEmpty. Operand 13770 states and 22360 transitions. [2021-12-22 12:42:58,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-12-22 12:42:58,876 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:42:58,876 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:42:58,876 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-22 12:42:58,877 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:42:58,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:42:58,877 INFO L85 PathProgramCache]: Analyzing trace with hash 1011593025, now seen corresponding path program 1 times [2021-12-22 12:42:58,877 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:42:58,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683941589] [2021-12-22 12:42:58,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:42:58,878 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:42:58,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:42:58,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 12:42:58,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:42:58,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-22 12:42:58,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:42:59,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-22 12:42:59,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:42:59,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-22 12:42:59,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:42:59,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-22 12:42:59,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:42:59,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:42:59,040 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:42:59,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683941589] [2021-12-22 12:42:59,040 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683941589] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:42:59,041 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:42:59,041 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 12:42:59,041 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633761509] [2021-12-22 12:42:59,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:42:59,042 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 12:42:59,042 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:42:59,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 12:42:59,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 12:42:59,042 INFO L87 Difference]: Start difference. First operand 13770 states and 22360 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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) [2021-12-22 12:43:04,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:43:04,112 INFO L93 Difference]: Finished difference Result 44541 states and 71783 transitions. [2021-12-22 12:43:04,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-22 12:43:04,113 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 178 [2021-12-22 12:43:04,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:43:04,223 INFO L225 Difference]: With dead ends: 44541 [2021-12-22 12:43:04,223 INFO L226 Difference]: Without dead ends: 32912 [2021-12-22 12:43:04,259 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-22 12:43:04,260 INFO L933 BasicCegarLoop]: 4928 mSDtfsCounter, 5520 mSDsluCounter, 17764 mSDsCounter, 0 mSdLazyCounter, 3007 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5539 SdHoareTripleChecker+Valid, 22692 SdHoareTripleChecker+Invalid, 3089 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 3007 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-12-22 12:43:04,260 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5539 Valid, 22692 Invalid, 3089 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 3007 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-12-22 12:43:04,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32912 states. [2021-12-22 12:43:05,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32912 to 25108. [2021-12-22 12:43:05,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25108 states, 23282 states have (on average 1.587020015462589) internal successors, (36949), 23348 states have internal predecessors, (36949), 1370 states have call successors, (1370), 390 states have call predecessors, (1370), 454 states have return successors, (2163), 1433 states have call predecessors, (2163), 1370 states have call successors, (2163) [2021-12-22 12:43:06,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25108 states to 25108 states and 40482 transitions. [2021-12-22 12:43:06,013 INFO L78 Accepts]: Start accepts. Automaton has 25108 states and 40482 transitions. Word has length 178 [2021-12-22 12:43:06,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:43:06,014 INFO L470 AbstractCegarLoop]: Abstraction has 25108 states and 40482 transitions. [2021-12-22 12:43:06,014 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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) [2021-12-22 12:43:06,014 INFO L276 IsEmpty]: Start isEmpty. Operand 25108 states and 40482 transitions. [2021-12-22 12:43:06,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-12-22 12:43:06,028 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:43:06,028 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:43:06,029 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-22 12:43:06,029 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:43:06,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:43:06,030 INFO L85 PathProgramCache]: Analyzing trace with hash -1352248637, now seen corresponding path program 1 times [2021-12-22 12:43:06,030 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:43:06,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818760578] [2021-12-22 12:43:06,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:43:06,030 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:43:06,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:43:06,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 12:43:06,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:43:06,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-22 12:43:06,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:43:06,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-22 12:43:06,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:43:06,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-22 12:43:06,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:43:06,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-22 12:43:06,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:43:06,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:43:06,182 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:43:06,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818760578] [2021-12-22 12:43:06,183 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818760578] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:43:06,183 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:43:06,183 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 12:43:06,183 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795322654] [2021-12-22 12:43:06,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:43:06,184 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 12:43:06,184 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:43:06,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 12:43:06,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 12:43:06,185 INFO L87 Difference]: Start difference. First operand 25108 states and 40482 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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)