./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label48+token_ring.03.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/Problem05_label48+token_ring.03.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 3cb4677417bffcd5881eb90c9776ad9c1dd0362c552c5face38646e7c65c86d6 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 08:26:11,947 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 08:26:11,948 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 08:26:11,981 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 08:26:11,982 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 08:26:11,983 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 08:26:11,984 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 08:26:11,986 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 08:26:11,988 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 08:26:11,991 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 08:26:11,991 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 08:26:11,993 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 08:26:11,993 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 08:26:11,994 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 08:26:11,995 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 08:26:11,997 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 08:26:11,998 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 08:26:11,999 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 08:26:12,000 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 08:26:12,004 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 08:26:12,005 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 08:26:12,006 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 08:26:12,006 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 08:26:12,007 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 08:26:12,008 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 08:26:12,013 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 08:26:12,013 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 08:26:12,013 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 08:26:12,014 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 08:26:12,015 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 08:26:12,016 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 08:26:12,016 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 08:26:12,017 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 08:26:12,018 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 08:26:12,018 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 08:26:12,019 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 08:26:12,020 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 08:26:12,020 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 08:26:12,020 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 08:26:12,020 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 08:26:12,021 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 08:26:12,022 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 08:26:12,024 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 08:26:12,047 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 08:26:12,049 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 08:26:12,049 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 08:26:12,049 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 08:26:12,050 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 08:26:12,050 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 08:26:12,050 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 08:26:12,051 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 08:26:12,051 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 08:26:12,051 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 08:26:12,052 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 08:26:12,052 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 08:26:12,052 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 08:26:12,052 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 08:26:12,052 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 08:26:12,052 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 08:26:12,052 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 08:26:12,053 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 08:26:12,053 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 08:26:12,054 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 08:26:12,054 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 08:26:12,054 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 08:26:12,054 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 08:26:12,054 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 08:26:12,055 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 08:26:12,055 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 08:26:12,055 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 08:26:12,055 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 08:26:12,055 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 08:26:12,056 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 08:26:12,056 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 08:26:12,056 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 08:26:12,056 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 08:26:12,056 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3cb4677417bffcd5881eb90c9776ad9c1dd0362c552c5face38646e7c65c86d6 [2022-07-12 08:26:12,249 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 08:26:12,272 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 08:26:12,275 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 08:26:12,275 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 08:26:12,276 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 08:26:12,277 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label48+token_ring.03.cil-2.c [2022-07-12 08:26:12,331 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/61b5a5060/b630b7e673a5491b8be987eb8f4cca7b/FLAG8afcb3194 [2022-07-12 08:26:13,053 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 08:26:13,053 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label48+token_ring.03.cil-2.c [2022-07-12 08:26:13,091 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/61b5a5060/b630b7e673a5491b8be987eb8f4cca7b/FLAG8afcb3194 [2022-07-12 08:26:13,353 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/61b5a5060/b630b7e673a5491b8be987eb8f4cca7b [2022-07-12 08:26:13,355 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 08:26:13,355 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 08:26:13,356 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 08:26:13,356 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 08:26:13,358 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 08:26:13,359 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 08:26:13" (1/1) ... [2022-07-12 08:26:13,360 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55ebba51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:26:13, skipping insertion in model container [2022-07-12 08:26:13,360 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 08:26:13" (1/1) ... [2022-07-12 08:26:13,364 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 08:26:13,523 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 08:26:14,777 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.03.cil-2.c[375709,375722] [2022-07-12 08:26:14,803 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.03.cil-2.c[383339,383352] [2022-07-12 08:26:14,933 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 08:26:14,940 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 08:26:15,545 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.03.cil-2.c[375709,375722] [2022-07-12 08:26:15,552 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.03.cil-2.c[383339,383352] [2022-07-12 08:26:15,570 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 08:26:15,617 INFO L208 MainTranslator]: Completed translation [2022-07-12 08:26:15,618 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:26:15 WrapperNode [2022-07-12 08:26:15,618 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 08:26:15,620 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 08:26:15,620 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 08:26:15,620 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 08:26:15,625 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:26:15" (1/1) ... [2022-07-12 08:26:15,689 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:26:15" (1/1) ... [2022-07-12 08:26:15,926 INFO L137 Inliner]: procedures = 50, calls = 50, calls flagged for inlining = 28, calls inlined = 28, statements flattened = 12677 [2022-07-12 08:26:15,926 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 08:26:15,927 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 08:26:15,927 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 08:26:15,927 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 08:26:15,934 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:26:15" (1/1) ... [2022-07-12 08:26:15,934 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:26:15" (1/1) ... [2022-07-12 08:26:15,974 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:26:15" (1/1) ... [2022-07-12 08:26:15,974 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:26:15" (1/1) ... [2022-07-12 08:26:16,160 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:26:15" (1/1) ... [2022-07-12 08:26:16,186 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:26:15" (1/1) ... [2022-07-12 08:26:16,236 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:26:15" (1/1) ... [2022-07-12 08:26:16,364 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 08:26:16,365 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 08:26:16,365 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 08:26:16,365 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 08:26:16,366 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:26:15" (1/1) ... [2022-07-12 08:26:16,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 08:26:16,392 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 08:26:16,421 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-12 08:26:16,455 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-12 08:26:16,477 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 08:26:16,477 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-07-12 08:26:16,477 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-07-12 08:26:16,477 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-07-12 08:26:16,477 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-07-12 08:26:16,477 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-07-12 08:26:16,477 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-07-12 08:26:16,478 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-07-12 08:26:16,478 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-07-12 08:26:16,478 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-07-12 08:26:16,478 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-07-12 08:26:16,478 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-07-12 08:26:16,478 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-07-12 08:26:16,478 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 08:26:16,478 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 08:26:16,478 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 08:26:16,591 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 08:26:16,606 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 08:26:21,194 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 08:26:21,219 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 08:26:21,219 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2022-07-12 08:26:21,224 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 08:26:21 BoogieIcfgContainer [2022-07-12 08:26:21,224 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 08:26:21,228 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 08:26:21,228 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 08:26:21,231 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 08:26:21,231 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 08:26:13" (1/3) ... [2022-07-12 08:26:21,231 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10440f2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 08:26:21, skipping insertion in model container [2022-07-12 08:26:21,232 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:26:15" (2/3) ... [2022-07-12 08:26:21,232 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10440f2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 08:26:21, skipping insertion in model container [2022-07-12 08:26:21,232 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 08:26:21" (3/3) ... [2022-07-12 08:26:21,234 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label48+token_ring.03.cil-2.c [2022-07-12 08:26:21,247 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 08:26:21,248 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-12 08:26:21,333 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 08:26:21,338 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@3a68b51e, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@5f83171 [2022-07-12 08:26:21,338 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-12 08:26:21,347 INFO L276 IsEmpty]: Start isEmpty. Operand has 2340 states, 2314 states have (on average 1.8556611927398445) internal successors, (4294), 2317 states have internal predecessors, (4294), 17 states have call successors, (17), 6 states have call predecessors, (17), 6 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2022-07-12 08:26:21,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-07-12 08:26:21,356 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:26:21,357 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 08:26:21,357 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:26:21,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:26:21,361 INFO L85 PathProgramCache]: Analyzing trace with hash 200056068, now seen corresponding path program 1 times [2022-07-12 08:26:21,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:26:21,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548013413] [2022-07-12 08:26:21,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:26:21,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:26:21,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:26:21,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:26:21,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:26:21,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 08:26:21,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:26:21,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-12 08:26:21,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:26:21,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 08:26:21,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:26:21,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 08:26:21,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:26:21,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 08:26:21,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:26:21,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548013413] [2022-07-12 08:26:21,694 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548013413] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:26:21,694 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 08:26:21,695 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 08:26:21,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219015956] [2022-07-12 08:26:21,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:26:21,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 08:26:21,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:26:21,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 08:26:21,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-12 08:26:21,728 INFO L87 Difference]: Start difference. First operand has 2340 states, 2314 states have (on average 1.8556611927398445) internal successors, (4294), 2317 states have internal predecessors, (4294), 17 states have call successors, (17), 6 states have call predecessors, (17), 6 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:26:22,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:26:22,685 INFO L93 Difference]: Finished difference Result 4899 states and 9012 transitions. [2022-07-12 08:26:22,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-12 08:26:22,687 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 4 states have internal predecessors, (69), 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 79 [2022-07-12 08:26:22,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:26:22,710 INFO L225 Difference]: With dead ends: 4899 [2022-07-12 08:26:22,710 INFO L226 Difference]: Without dead ends: 2500 [2022-07-12 08:26:22,719 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-07-12 08:26:22,723 INFO L413 NwaCegarLoop]: 4287 mSDtfsCounter, 4543 mSDsluCounter, 12468 mSDsCounter, 0 mSdLazyCounter, 702 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4553 SdHoareTripleChecker+Valid, 16755 SdHoareTripleChecker+Invalid, 782 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 702 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-12 08:26:22,724 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4553 Valid, 16755 Invalid, 782 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [80 Valid, 702 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-12 08:26:22,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2500 states. [2022-07-12 08:26:22,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2500 to 2415. [2022-07-12 08:26:22,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2415 states, 2371 states have (on average 1.8291859974694222) internal successors, (4337), 2374 states have internal predecessors, (4337), 29 states have call successors, (29), 12 states have call predecessors, (29), 13 states have return successors, (32), 29 states have call predecessors, (32), 29 states have call successors, (32) [2022-07-12 08:26:22,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2415 states to 2415 states and 4398 transitions. [2022-07-12 08:26:22,847 INFO L78 Accepts]: Start accepts. Automaton has 2415 states and 4398 transitions. Word has length 79 [2022-07-12 08:26:22,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:26:22,848 INFO L495 AbstractCegarLoop]: Abstraction has 2415 states and 4398 transitions. [2022-07-12 08:26:22,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:26:22,848 INFO L276 IsEmpty]: Start isEmpty. Operand 2415 states and 4398 transitions. [2022-07-12 08:26:22,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-07-12 08:26:22,851 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:26:22,851 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 08:26:22,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 08:26:22,852 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:26:22,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:26:22,852 INFO L85 PathProgramCache]: Analyzing trace with hash 437104264, now seen corresponding path program 1 times [2022-07-12 08:26:22,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:26:22,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564866347] [2022-07-12 08:26:22,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:26:22,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:26:22,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:26:22,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:26:22,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:26:22,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 08:26:22,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:26:22,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-12 08:26:22,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:26:22,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 08:26:22,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:26:22,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 08:26:22,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:26:22,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 08:26:22,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:26:22,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564866347] [2022-07-12 08:26:22,992 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564866347] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:26:22,992 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 08:26:22,992 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 08:26:22,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953119907] [2022-07-12 08:26:22,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:26:22,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 08:26:22,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:26:22,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 08:26:22,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 08:26:22,998 INFO L87 Difference]: Start difference. First operand 2415 states and 4398 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:26:24,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:26:24,056 INFO L93 Difference]: Finished difference Result 2969 states and 5244 transitions. [2022-07-12 08:26:24,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 08:26:24,056 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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 79 [2022-07-12 08:26:24,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:26:24,067 INFO L225 Difference]: With dead ends: 2969 [2022-07-12 08:26:24,067 INFO L226 Difference]: Without dead ends: 2686 [2022-07-12 08:26:24,070 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-12 08:26:24,071 INFO L413 NwaCegarLoop]: 4320 mSDtfsCounter, 4469 mSDsluCounter, 16555 mSDsCounter, 0 mSdLazyCounter, 1090 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4479 SdHoareTripleChecker+Valid, 20875 SdHoareTripleChecker+Invalid, 1147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 1090 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-12 08:26:24,071 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4479 Valid, 20875 Invalid, 1147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 1090 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-12 08:26:24,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2686 states. [2022-07-12 08:26:24,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2686 to 2548. [2022-07-12 08:26:24,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2548 states, 2485 states have (on average 1.8132796780684104) internal successors, (4506), 2489 states have internal predecessors, (4506), 41 states have call successors, (41), 18 states have call predecessors, (41), 20 states have return successors, (46), 42 states have call predecessors, (46), 41 states have call successors, (46) [2022-07-12 08:26:24,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2548 states to 2548 states and 4593 transitions. [2022-07-12 08:26:24,137 INFO L78 Accepts]: Start accepts. Automaton has 2548 states and 4593 transitions. Word has length 79 [2022-07-12 08:26:24,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:26:24,138 INFO L495 AbstractCegarLoop]: Abstraction has 2548 states and 4593 transitions. [2022-07-12 08:26:24,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:26:24,138 INFO L276 IsEmpty]: Start isEmpty. Operand 2548 states and 4593 transitions. [2022-07-12 08:26:24,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-07-12 08:26:24,140 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:26:24,140 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 08:26:24,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 08:26:24,141 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:26:24,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:26:24,141 INFO L85 PathProgramCache]: Analyzing trace with hash 382711366, now seen corresponding path program 1 times [2022-07-12 08:26:24,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:26:24,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792571229] [2022-07-12 08:26:24,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:26:24,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:26:24,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:26:24,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:26:24,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:26:24,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 08:26:24,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:26:24,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-12 08:26:24,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:26:24,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 08:26:24,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:26:24,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 08:26:24,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:26:24,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 08:26:24,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:26:24,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792571229] [2022-07-12 08:26:24,226 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792571229] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:26:24,226 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 08:26:24,226 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 08:26:24,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825730729] [2022-07-12 08:26:24,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:26:24,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 08:26:24,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:26:24,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 08:26:24,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 08:26:24,229 INFO L87 Difference]: Start difference. First operand 2548 states and 4593 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:26:25,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:26:25,161 INFO L93 Difference]: Finished difference Result 3451 states and 5967 transitions. [2022-07-12 08:26:25,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 08:26:25,162 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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 79 [2022-07-12 08:26:25,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:26:25,172 INFO L225 Difference]: With dead ends: 3451 [2022-07-12 08:26:25,173 INFO L226 Difference]: Without dead ends: 3035 [2022-07-12 08:26:25,175 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-12 08:26:25,176 INFO L413 NwaCegarLoop]: 4312 mSDtfsCounter, 4466 mSDsluCounter, 16555 mSDsCounter, 0 mSdLazyCounter, 1092 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4476 SdHoareTripleChecker+Valid, 20867 SdHoareTripleChecker+Invalid, 1152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 1092 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-12 08:26:25,176 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4476 Valid, 20867 Invalid, 1152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 1092 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-12 08:26:25,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3035 states. [2022-07-12 08:26:25,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3035 to 2815. [2022-07-12 08:26:25,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2815 states, 2714 states have (on average 1.7851879145173175) internal successors, (4845), 2720 states have internal predecessors, (4845), 65 states have call successors, (65), 30 states have call predecessors, (65), 34 states have return successors, (78), 68 states have call predecessors, (78), 65 states have call successors, (78) [2022-07-12 08:26:25,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2815 states to 2815 states and 4988 transitions. [2022-07-12 08:26:25,248 INFO L78 Accepts]: Start accepts. Automaton has 2815 states and 4988 transitions. Word has length 79 [2022-07-12 08:26:25,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:26:25,249 INFO L495 AbstractCegarLoop]: Abstraction has 2815 states and 4988 transitions. [2022-07-12 08:26:25,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:26:25,250 INFO L276 IsEmpty]: Start isEmpty. Operand 2815 states and 4988 transitions. [2022-07-12 08:26:25,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-07-12 08:26:25,254 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:26:25,255 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 08:26:25,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-12 08:26:25,255 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:26:25,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:26:25,256 INFO L85 PathProgramCache]: Analyzing trace with hash -34685240, now seen corresponding path program 1 times [2022-07-12 08:26:25,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:26:25,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843432157] [2022-07-12 08:26:25,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:26:25,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:26:25,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:26:25,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:26:25,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:26:25,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 08:26:25,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:26:25,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-12 08:26:25,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:26:25,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 08:26:25,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:26:25,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 08:26:25,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:26:25,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 08:26:25,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:26:25,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843432157] [2022-07-12 08:26:25,354 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843432157] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:26:25,354 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 08:26:25,354 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 08:26:25,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944756814] [2022-07-12 08:26:25,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:26:25,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 08:26:25,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:26:25,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 08:26:25,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 08:26:25,355 INFO L87 Difference]: Start difference. First operand 2815 states and 4988 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:26:26,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:26:26,334 INFO L93 Difference]: Finished difference Result 4382 states and 7362 transitions. [2022-07-12 08:26:26,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 08:26:26,334 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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 79 [2022-07-12 08:26:26,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:26:26,346 INFO L225 Difference]: With dead ends: 4382 [2022-07-12 08:26:26,346 INFO L226 Difference]: Without dead ends: 3699 [2022-07-12 08:26:26,349 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-12 08:26:26,349 INFO L413 NwaCegarLoop]: 4308 mSDtfsCounter, 4462 mSDsluCounter, 16555 mSDsCounter, 0 mSdLazyCounter, 1087 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4472 SdHoareTripleChecker+Valid, 20863 SdHoareTripleChecker+Invalid, 1147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 1087 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-12 08:26:26,350 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4472 Valid, 20863 Invalid, 1147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 1087 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-12 08:26:26,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3699 states. [2022-07-12 08:26:26,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3699 to 3350. [2022-07-12 08:26:26,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3350 states, 3173 states have (on average 1.7406240151276395) internal successors, (5523), 3183 states have internal predecessors, (5523), 113 states have call successors, (113), 54 states have call predecessors, (113), 62 states have return successors, (148), 120 states have call predecessors, (148), 113 states have call successors, (148) [2022-07-12 08:26:26,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3350 states to 3350 states and 5784 transitions. [2022-07-12 08:26:26,441 INFO L78 Accepts]: Start accepts. Automaton has 3350 states and 5784 transitions. Word has length 79 [2022-07-12 08:26:26,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:26:26,442 INFO L495 AbstractCegarLoop]: Abstraction has 3350 states and 5784 transitions. [2022-07-12 08:26:26,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:26:26,446 INFO L276 IsEmpty]: Start isEmpty. Operand 3350 states and 5784 transitions. [2022-07-12 08:26:26,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-07-12 08:26:26,448 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:26:26,448 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 08:26:26,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-12 08:26:26,448 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:26:26,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:26:26,449 INFO L85 PathProgramCache]: Analyzing trace with hash 644587014, now seen corresponding path program 1 times [2022-07-12 08:26:26,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:26:26,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172656007] [2022-07-12 08:26:26,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:26:26,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:26:26,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:26:26,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:26:26,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:26:26,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 08:26:26,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:26:26,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-12 08:26:26,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:26:26,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 08:26:26,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:26:26,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 08:26:26,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:26:26,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 08:26:26,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:26:26,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172656007] [2022-07-12 08:26:26,517 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172656007] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:26:26,517 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 08:26:26,518 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 08:26:26,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803429128] [2022-07-12 08:26:26,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:26:26,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 08:26:26,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:26:26,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 08:26:26,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 08:26:26,519 INFO L87 Difference]: Start difference. First operand 3350 states and 5784 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:26:27,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:26:27,450 INFO L93 Difference]: Finished difference Result 6651 states and 10762 transitions. [2022-07-12 08:26:27,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 08:26:27,451 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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 79 [2022-07-12 08:26:27,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:26:27,470 INFO L225 Difference]: With dead ends: 6651 [2022-07-12 08:26:27,470 INFO L226 Difference]: Without dead ends: 5433 [2022-07-12 08:26:27,476 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-12 08:26:27,477 INFO L413 NwaCegarLoop]: 4302 mSDtfsCounter, 4593 mSDsluCounter, 16547 mSDsCounter, 0 mSdLazyCounter, 1075 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4607 SdHoareTripleChecker+Valid, 20849 SdHoareTripleChecker+Invalid, 1140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 1075 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-12 08:26:27,477 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4607 Valid, 20849 Invalid, 1140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 1075 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-12 08:26:27,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5433 states. [2022-07-12 08:26:27,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5433 to 4401. [2022-07-12 08:26:27,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4401 states, 4080 states have (on average 1.683578431372549) internal successors, (6869), 4098 states have internal predecessors, (6869), 201 states have call successors, (201), 102 states have call predecessors, (201), 118 states have return successors, (298), 216 states have call predecessors, (298), 201 states have call successors, (298) [2022-07-12 08:26:27,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4401 states to 4401 states and 7368 transitions. [2022-07-12 08:26:27,587 INFO L78 Accepts]: Start accepts. Automaton has 4401 states and 7368 transitions. Word has length 79 [2022-07-12 08:26:27,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:26:27,588 INFO L495 AbstractCegarLoop]: Abstraction has 4401 states and 7368 transitions. [2022-07-12 08:26:27,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:26:27,588 INFO L276 IsEmpty]: Start isEmpty. Operand 4401 states and 7368 transitions. [2022-07-12 08:26:27,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-07-12 08:26:27,593 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:26:27,593 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 08:26:27,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-12 08:26:27,594 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:26:27,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:26:27,594 INFO L85 PathProgramCache]: Analyzing trace with hash -1688805624, now seen corresponding path program 1 times [2022-07-12 08:26:27,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:26:27,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013306148] [2022-07-12 08:26:27,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:26:27,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:26:27,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:26:27,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:26:27,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:26:27,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 08:26:27,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:26:27,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-12 08:26:27,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:26:27,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 08:26:27,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:26:27,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 08:26:27,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:26:27,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 08:26:27,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:26:27,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013306148] [2022-07-12 08:26:27,656 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013306148] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:26:27,656 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 08:26:27,656 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 08:26:27,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772163350] [2022-07-12 08:26:27,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:26:27,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 08:26:27,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:26:27,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 08:26:27,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 08:26:27,658 INFO L87 Difference]: Start difference. First operand 4401 states and 7368 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:26:28,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:26:28,754 INFO L93 Difference]: Finished difference Result 10516 states and 16624 transitions. [2022-07-12 08:26:28,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 08:26:28,754 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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 79 [2022-07-12 08:26:28,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:26:28,783 INFO L225 Difference]: With dead ends: 10516 [2022-07-12 08:26:28,783 INFO L226 Difference]: Without dead ends: 8247 [2022-07-12 08:26:28,792 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-12 08:26:28,793 INFO L413 NwaCegarLoop]: 4339 mSDtfsCounter, 4479 mSDsluCounter, 16544 mSDsCounter, 0 mSdLazyCounter, 1210 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4488 SdHoareTripleChecker+Valid, 20883 SdHoareTripleChecker+Invalid, 1275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 1210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-12 08:26:28,793 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4488 Valid, 20883 Invalid, 1275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 1210 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-12 08:26:28,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8247 states. [2022-07-12 08:26:28,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8247 to 6412. [2022-07-12 08:26:28,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6412 states, 5811 states have (on average 1.6236448115642748) internal successors, (9435), 5845 states have internal predecessors, (9435), 369 states have call successors, (369), 198 states have call predecessors, (369), 230 states have return successors, (644), 400 states have call predecessors, (644), 369 states have call successors, (644) [2022-07-12 08:26:29,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6412 states to 6412 states and 10448 transitions. [2022-07-12 08:26:29,016 INFO L78 Accepts]: Start accepts. Automaton has 6412 states and 10448 transitions. Word has length 79 [2022-07-12 08:26:29,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:26:29,016 INFO L495 AbstractCegarLoop]: Abstraction has 6412 states and 10448 transitions. [2022-07-12 08:26:29,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:26:29,021 INFO L276 IsEmpty]: Start isEmpty. Operand 6412 states and 10448 transitions. [2022-07-12 08:26:29,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-07-12 08:26:29,025 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:26:29,025 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 08:26:29,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-12 08:26:29,026 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:26:29,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:26:29,026 INFO L85 PathProgramCache]: Analyzing trace with hash -1486981690, now seen corresponding path program 1 times [2022-07-12 08:26:29,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:26:29,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961226177] [2022-07-12 08:26:29,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:26:29,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:26:29,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:26:29,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:26:29,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:26:29,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 08:26:29,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:26:29,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-12 08:26:29,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:26:29,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 08:26:29,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:26:29,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 08:26:29,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:26:29,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 08:26:29,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:26:29,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961226177] [2022-07-12 08:26:29,089 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961226177] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:26:29,090 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 08:26:29,090 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 08:26:29,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773457261] [2022-07-12 08:26:29,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:26:29,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 08:26:29,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:26:29,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 08:26:29,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 08:26:29,092 INFO L87 Difference]: Start difference. First operand 6412 states and 10448 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:26:30,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:26:30,176 INFO L93 Difference]: Finished difference Result 17230 states and 26990 transitions. [2022-07-12 08:26:30,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 08:26:30,176 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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 79 [2022-07-12 08:26:30,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:26:30,218 INFO L225 Difference]: With dead ends: 17230 [2022-07-12 08:26:30,218 INFO L226 Difference]: Without dead ends: 12950 [2022-07-12 08:26:30,236 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-12 08:26:30,237 INFO L413 NwaCegarLoop]: 4289 mSDtfsCounter, 4470 mSDsluCounter, 16547 mSDsCounter, 0 mSdLazyCounter, 1044 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4484 SdHoareTripleChecker+Valid, 20836 SdHoareTripleChecker+Invalid, 1111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 1044 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-12 08:26:30,237 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4484 Valid, 20836 Invalid, 1111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 1044 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-12 08:26:30,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12950 states. [2022-07-12 08:26:30,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12950 to 10528. [2022-07-12 08:26:30,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10528 states, 9383 states have (on average 1.5742299904081851) internal successors, (14771), 9449 states have internal predecessors, (14771), 689 states have call successors, (689), 390 states have call predecessors, (689), 454 states have return successors, (1482), 752 states have call predecessors, (1482), 689 states have call successors, (1482) [2022-07-12 08:26:30,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10528 states to 10528 states and 16942 transitions. [2022-07-12 08:26:30,681 INFO L78 Accepts]: Start accepts. Automaton has 10528 states and 16942 transitions. Word has length 79 [2022-07-12 08:26:30,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:26:30,682 INFO L495 AbstractCegarLoop]: Abstraction has 10528 states and 16942 transitions. [2022-07-12 08:26:30,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:26:30,683 INFO L276 IsEmpty]: Start isEmpty. Operand 10528 states and 16942 transitions. [2022-07-12 08:26:30,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-07-12 08:26:30,689 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:26:30,689 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 08:26:30,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-12 08:26:30,692 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:26:30,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:26:30,692 INFO L85 PathProgramCache]: Analyzing trace with hash -1053252604, now seen corresponding path program 1 times [2022-07-12 08:26:30,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:26:30,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192210346] [2022-07-12 08:26:30,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:26:30,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:26:30,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:26:30,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:26:30,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:26:30,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 08:26:30,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:26:30,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-12 08:26:30,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:26:30,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 08:26:30,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:26:30,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 08:26:30,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:26:30,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 08:26:30,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:26:30,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192210346] [2022-07-12 08:26:30,761 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192210346] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:26:30,761 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 08:26:30,761 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 08:26:30,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849830837] [2022-07-12 08:26:30,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:26:30,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 08:26:30,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:26:30,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 08:26:30,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-12 08:26:30,762 INFO L87 Difference]: Start difference. First operand 10528 states and 16942 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:26:31,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:26:31,852 INFO L93 Difference]: Finished difference Result 25979 states and 40698 transitions. [2022-07-12 08:26:31,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-12 08:26:31,852 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 4 states have internal predecessors, (69), 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 79 [2022-07-12 08:26:31,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:26:31,901 INFO L225 Difference]: With dead ends: 25979 [2022-07-12 08:26:31,902 INFO L226 Difference]: Without dead ends: 17584 [2022-07-12 08:26:31,929 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-07-12 08:26:31,929 INFO L413 NwaCegarLoop]: 4388 mSDtfsCounter, 4630 mSDsluCounter, 12328 mSDsCounter, 0 mSdLazyCounter, 835 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4657 SdHoareTripleChecker+Valid, 16716 SdHoareTripleChecker+Invalid, 924 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 835 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-12 08:26:31,930 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4657 Valid, 16716 Invalid, 924 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 835 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-12 08:26:31,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17584 states. [2022-07-12 08:26:32,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17584 to 14721. [2022-07-12 08:26:32,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14721 states, 12981 states have (on average 1.5384793159232726) internal successors, (19971), 13112 states have internal predecessors, (19971), 1054 states have call successors, (1054), 588 states have call predecessors, (1054), 684 states have return successors, (2091), 1084 states have call predecessors, (2091), 1054 states have call successors, (2091) [2022-07-12 08:26:32,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14721 states to 14721 states and 23116 transitions. [2022-07-12 08:26:32,538 INFO L78 Accepts]: Start accepts. Automaton has 14721 states and 23116 transitions. Word has length 79 [2022-07-12 08:26:32,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:26:32,538 INFO L495 AbstractCegarLoop]: Abstraction has 14721 states and 23116 transitions. [2022-07-12 08:26:32,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:26:32,539 INFO L276 IsEmpty]: Start isEmpty. Operand 14721 states and 23116 transitions. [2022-07-12 08:26:32,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-07-12 08:26:32,567 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:26:32,567 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 08:26:32,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-12 08:26:32,567 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:26:32,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:26:32,568 INFO L85 PathProgramCache]: Analyzing trace with hash 1451529571, now seen corresponding path program 1 times [2022-07-12 08:26:32,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:26:32,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63863627] [2022-07-12 08:26:32,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:26:32,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:26:32,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:26:32,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:26:32,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:26:32,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 08:26:32,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:26:32,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-12 08:26:32,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:26:32,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 08:26:32,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:26:32,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 08:26:32,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:26:32,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-12 08:26:32,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:26:32,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-12 08:26:32,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:26:32,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-12 08:26:32,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:26:32,654 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-12 08:26:32,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:26:32,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63863627] [2022-07-12 08:26:32,655 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63863627] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 08:26:32,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1516948027] [2022-07-12 08:26:32,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:26:32,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 08:26:32,656 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 08:26:32,657 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 08:26:32,660 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-12 08:26:32,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:26:32,756 INFO L263 TraceCheckSpWp]: Trace formula consists of 496 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-12 08:26:32,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 08:26:32,827 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-12 08:26:32,827 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 08:26:32,827 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1516948027] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:26:32,827 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 08:26:32,828 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2022-07-12 08:26:32,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100548653] [2022-07-12 08:26:32,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:26:32,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 08:26:32,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:26:32,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 08:26:32,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-12 08:26:32,829 INFO L87 Difference]: Start difference. First operand 14721 states and 23116 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 2 states have internal predecessors, (92), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-12 08:26:33,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:26:33,706 INFO L93 Difference]: Finished difference Result 39550 states and 61248 transitions. [2022-07-12 08:26:33,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 08:26:33,706 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 2 states have internal predecessors, (92), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 128 [2022-07-12 08:26:33,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:26:33,780 INFO L225 Difference]: With dead ends: 39550 [2022-07-12 08:26:33,780 INFO L226 Difference]: Without dead ends: 26962 [2022-07-12 08:26:33,817 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-12 08:26:33,817 INFO L413 NwaCegarLoop]: 4192 mSDtfsCounter, 4136 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4136 SdHoareTripleChecker+Valid, 4390 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 08:26:33,818 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4136 Valid, 4390 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 08:26:33,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26962 states. [2022-07-12 08:26:34,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26962 to 26764. [2022-07-12 08:26:34,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26764 states, 23340 states have (on average 1.5074550128534705) internal successors, (35184), 23600 states have internal predecessors, (35184), 2054 states have call successors, (2054), 1176 states have call predecessors, (2054), 1368 states have return successors, (4065), 2051 states have call predecessors, (4065), 2054 states have call successors, (4065) [2022-07-12 08:26:34,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26764 states to 26764 states and 41303 transitions. [2022-07-12 08:26:34,669 INFO L78 Accepts]: Start accepts. Automaton has 26764 states and 41303 transitions. Word has length 128 [2022-07-12 08:26:34,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:26:34,669 INFO L495 AbstractCegarLoop]: Abstraction has 26764 states and 41303 transitions. [2022-07-12 08:26:34,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 2 states have internal predecessors, (92), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-12 08:26:34,670 INFO L276 IsEmpty]: Start isEmpty. Operand 26764 states and 41303 transitions. [2022-07-12 08:26:34,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-07-12 08:26:34,717 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:26:34,718 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 08:26:34,738 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-12 08:26:34,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 08:26:34,924 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:26:34,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:26:34,924 INFO L85 PathProgramCache]: Analyzing trace with hash -1829435325, now seen corresponding path program 1 times [2022-07-12 08:26:34,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:26:34,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263204245] [2022-07-12 08:26:34,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:26:34,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:26:34,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:26:34,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:26:34,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:26:34,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 08:26:34,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:26:34,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-12 08:26:34,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:26:35,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 08:26:35,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:26:35,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 08:26:35,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:26:35,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-12 08:26:35,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:26:35,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-12 08:26:35,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:26:35,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-12 08:26:35,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:26:35,026 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-12 08:26:35,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:26:35,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263204245] [2022-07-12 08:26:35,026 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263204245] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 08:26:35,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [63104137] [2022-07-12 08:26:35,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:26:35,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 08:26:35,027 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 08:26:35,028 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 08:26:35,055 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-12 08:26:35,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:26:35,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 490 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-12 08:26:35,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 08:26:35,184 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-12 08:26:35,184 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 08:26:35,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [63104137] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:26:35,185 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 08:26:35,185 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2022-07-12 08:26:35,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271985656] [2022-07-12 08:26:35,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:26:35,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 08:26:35,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:26:35,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 08:26:35,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-12 08:26:35,186 INFO L87 Difference]: Start difference. First operand 26764 states and 41303 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-12 08:26:36,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:26:36,373 INFO L93 Difference]: Finished difference Result 75333 states and 115677 transitions. [2022-07-12 08:26:36,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 08:26:36,373 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 128 [2022-07-12 08:26:36,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:26:36,565 INFO L225 Difference]: With dead ends: 75333 [2022-07-12 08:26:36,565 INFO L226 Difference]: Without dead ends: 50702 [2022-07-12 08:26:36,630 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-12 08:26:36,630 INFO L413 NwaCegarLoop]: 4192 mSDtfsCounter, 4130 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4130 SdHoareTripleChecker+Valid, 4390 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 08:26:36,631 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4130 Valid, 4390 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 08:26:36,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50702 states. [2022-07-12 08:26:38,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50702 to 50308. [2022-07-12 08:26:38,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50308 states, 43566 states have (on average 1.4879493182757195) internal successors, (64824), 44084 states have internal predecessors, (64824), 4004 states have call successors, (4004), 2352 states have call predecessors, (4004), 2736 states have return successors, (7963), 3935 states have call predecessors, (7963), 4004 states have call successors, (7963) [2022-07-12 08:26:38,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50308 states to 50308 states and 76791 transitions. [2022-07-12 08:26:38,562 INFO L78 Accepts]: Start accepts. Automaton has 50308 states and 76791 transitions. Word has length 128 [2022-07-12 08:26:38,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:26:38,562 INFO L495 AbstractCegarLoop]: Abstraction has 50308 states and 76791 transitions. [2022-07-12 08:26:38,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-12 08:26:38,563 INFO L276 IsEmpty]: Start isEmpty. Operand 50308 states and 76791 transitions. [2022-07-12 08:26:38,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-07-12 08:26:38,637 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:26:38,637 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 08:26:38,659 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-12 08:26:38,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-07-12 08:26:38,858 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:26:38,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:26:38,858 INFO L85 PathProgramCache]: Analyzing trace with hash 1038951203, now seen corresponding path program 1 times [2022-07-12 08:26:38,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:26:38,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399435412] [2022-07-12 08:26:38,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:26:38,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:26:38,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:26:38,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:26:38,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:26:38,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 08:26:38,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:26:38,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-12 08:26:38,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:26:38,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 08:26:38,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:26:38,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 08:26:38,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:26:38,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-12 08:26:38,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:26:38,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-12 08:26:38,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:26:38,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-12 08:26:38,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:26:38,972 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-12 08:26:38,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:26:38,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399435412] [2022-07-12 08:26:38,972 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399435412] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 08:26:38,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1772257831] [2022-07-12 08:26:38,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:26:38,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 08:26:38,973 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 08:26:38,988 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 08:26:39,003 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-12 08:26:39,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:26:39,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-12 08:26:39,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 08:26:39,105 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-07-12 08:26:39,107 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 08:26:39,107 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1772257831] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:26:39,107 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 08:26:39,108 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-07-12 08:26:39,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088092251] [2022-07-12 08:26:39,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:26:39,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 08:26:39,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:26:39,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 08:26:39,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-12 08:26:39,109 INFO L87 Difference]: Start difference. First operand 50308 states and 76791 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-12 08:26:42,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:26:42,298 INFO L93 Difference]: Finished difference Result 144685 states and 222029 transitions. [2022-07-12 08:26:42,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 08:26:42,298 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 128 [2022-07-12 08:26:42,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:26:42,757 INFO L225 Difference]: With dead ends: 144685 [2022-07-12 08:26:42,758 INFO L226 Difference]: Without dead ends: 96511 [2022-07-12 08:26:42,858 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-12 08:26:42,859 INFO L413 NwaCegarLoop]: 4382 mSDtfsCounter, 194 mSDsluCounter, 4180 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 8562 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 08:26:42,859 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [194 Valid, 8562 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 08:26:42,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96511 states. [2022-07-12 08:26:46,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96511 to 96511. [2022-07-12 08:26:46,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96511 states, 83294 states have (on average 1.4710663433140443) internal successors, (122531), 84197 states have internal predecessors, (122531), 7743 states have call successors, (7743), 4704 states have call predecessors, (7743), 5472 states have return successors, (17046), 7737 states have call predecessors, (17046), 7743 states have call successors, (17046) [2022-07-12 08:26:47,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96511 states to 96511 states and 147320 transitions. [2022-07-12 08:26:47,139 INFO L78 Accepts]: Start accepts. Automaton has 96511 states and 147320 transitions. Word has length 128 [2022-07-12 08:26:47,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:26:47,141 INFO L495 AbstractCegarLoop]: Abstraction has 96511 states and 147320 transitions. [2022-07-12 08:26:47,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-12 08:26:47,142 INFO L276 IsEmpty]: Start isEmpty. Operand 96511 states and 147320 transitions. [2022-07-12 08:26:47,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-07-12 08:26:47,390 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:26:47,391 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 08:26:47,407 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-07-12 08:26:47,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 08:26:47,605 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:26:47,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:26:47,606 INFO L85 PathProgramCache]: Analyzing trace with hash 1108291405, now seen corresponding path program 1 times [2022-07-12 08:26:47,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:26:47,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653367525] [2022-07-12 08:26:47,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:26:47,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:26:47,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:26:47,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:26:47,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:26:47,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 08:26:47,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:26:47,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-12 08:26:47,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:26:47,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 08:26:47,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:26:47,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 08:26:47,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:26:47,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-12 08:26:47,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:26:47,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-12 08:26:47,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:26:47,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-12 08:26:47,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:26:47,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-12 08:26:47,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:26:47,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-07-12 08:26:47,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:26:47,726 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-07-12 08:26:47,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:26:47,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653367525] [2022-07-12 08:26:47,726 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653367525] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 08:26:47,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1397992421] [2022-07-12 08:26:47,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:26:47,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 08:26:47,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 08:26:47,732 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 08:26:47,734 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-12 08:26:47,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:26:47,851 INFO L263 TraceCheckSpWp]: Trace formula consists of 600 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-12 08:26:47,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 08:26:48,014 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-07-12 08:26:48,015 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 08:26:48,015 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1397992421] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:26:48,015 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 08:26:48,015 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2022-07-12 08:26:48,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160696180] [2022-07-12 08:26:48,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:26:48,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 08:26:48,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:26:48,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 08:26:48,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-12 08:26:48,018 INFO L87 Difference]: Start difference. First operand 96511 states and 147320 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-12 08:26:54,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:26:54,460 INFO L93 Difference]: Finished difference Result 280463 states and 429619 transitions. [2022-07-12 08:26:54,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 08:26:54,460 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 166 [2022-07-12 08:26:54,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:26:55,239 INFO L225 Difference]: With dead ends: 280463 [2022-07-12 08:26:55,239 INFO L226 Difference]: Without dead ends: 186091 [2022-07-12 08:26:55,656 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-12 08:26:55,657 INFO L413 NwaCegarLoop]: 4201 mSDtfsCounter, 4086 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4086 SdHoareTripleChecker+Valid, 4399 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 08:26:55,658 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4086 Valid, 4399 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 08:26:55,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186091 states. [2022-07-12 08:27:02,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186091 to 184521. [2022-07-12 08:27:02,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184521 states, 159460 states have (on average 1.465803336259877) internal successors, (233737), 161263 states have internal predecessors, (233737), 14405 states have call successors, (14405), 9118 states have call predecessors, (14405), 10654 states have return successors, (32274), 14267 states have call predecessors, (32274), 14405 states have call successors, (32274) [2022-07-12 08:27:03,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184521 states to 184521 states and 280416 transitions. [2022-07-12 08:27:03,294 INFO L78 Accepts]: Start accepts. Automaton has 184521 states and 280416 transitions. Word has length 166 [2022-07-12 08:27:03,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:27:03,295 INFO L495 AbstractCegarLoop]: Abstraction has 184521 states and 280416 transitions. [2022-07-12 08:27:03,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-12 08:27:03,295 INFO L276 IsEmpty]: Start isEmpty. Operand 184521 states and 280416 transitions. [2022-07-12 08:27:03,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2022-07-12 08:27:03,781 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:27:03,781 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 08:27:03,798 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-07-12 08:27:03,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 08:27:03,995 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:27:03,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:27:03,996 INFO L85 PathProgramCache]: Analyzing trace with hash 399987983, now seen corresponding path program 1 times [2022-07-12 08:27:03,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:27:03,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586210642] [2022-07-12 08:27:03,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:27:03,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:27:04,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:27:04,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:27:04,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:27:04,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 08:27:04,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:27:04,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-12 08:27:04,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:27:04,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 08:27:04,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:27:04,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 08:27:04,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:27:04,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-12 08:27:04,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:27:04,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-12 08:27:04,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:27:04,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-12 08:27:04,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:27:04,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-07-12 08:27:04,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:27:04,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-12 08:27:04,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:27:04,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-07-12 08:27:04,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:27:04,114 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2022-07-12 08:27:04,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:27:04,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586210642] [2022-07-12 08:27:04,114 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586210642] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 08:27:04,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1408978020] [2022-07-12 08:27:04,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:27:04,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 08:27:04,115 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 08:27:04,132 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 08:27:04,135 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-12 08:27:04,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:27:04,746 INFO L263 TraceCheckSpWp]: Trace formula consists of 639 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-12 08:27:04,749 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 08:27:04,841 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 103 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-12 08:27:04,841 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 08:27:04,842 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1408978020] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:27:04,842 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 08:27:04,842 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-07-12 08:27:04,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151258130] [2022-07-12 08:27:04,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:27:04,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 08:27:04,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:27:04,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 08:27:04,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-12 08:27:04,843 INFO L87 Difference]: Start difference. First operand 184521 states and 280416 transitions. Second operand has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10)