./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-commit-tester/m0_drivers-net-slip-ko--108_1a--1b0b0ac-1.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 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/ldv-commit-tester/m0_drivers-net-slip-ko--108_1a--1b0b0ac-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-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 64bit --witnessprinter.graph.data.programhash 03b59b42cc833f5b28fc5dc7cc6711355c533ad94229ba44874c6d4d186d9dcb --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 23:00:19,926 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 23:00:19,929 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 23:00:19,983 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 23:00:19,987 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 23:00:19,989 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 23:00:19,993 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 23:00:19,997 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 23:00:19,999 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 23:00:20,005 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 23:00:20,006 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 23:00:20,007 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 23:00:20,008 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 23:00:20,010 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 23:00:20,011 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 23:00:20,013 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 23:00:20,015 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 23:00:20,016 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 23:00:20,020 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 23:00:20,024 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 23:00:20,026 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 23:00:20,027 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 23:00:20,028 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 23:00:20,029 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 23:00:20,031 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 23:00:20,041 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 23:00:20,042 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 23:00:20,042 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 23:00:20,043 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 23:00:20,044 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 23:00:20,045 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 23:00:20,046 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 23:00:20,047 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 23:00:20,048 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 23:00:20,049 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 23:00:20,049 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 23:00:20,050 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 23:00:20,050 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 23:00:20,050 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 23:00:20,052 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 23:00:20,053 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 23:00:20,054 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 23:00:20,056 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-22 23:00:20,091 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 23:00:20,092 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 23:00:20,092 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 23:00:20,093 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 23:00:20,093 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 23:00:20,094 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 23:00:20,094 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 23:00:20,095 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 23:00:20,095 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 23:00:20,096 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 23:00:20,096 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 23:00:20,096 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 23:00:20,097 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 23:00:20,097 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 23:00:20,097 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 23:00:20,097 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 23:00:20,097 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 23:00:20,097 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 23:00:20,098 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 23:00:20,098 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 23:00:20,098 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 23:00:20,098 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 23:00:20,098 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 23:00:20,099 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 23:00:20,099 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 23:00:20,099 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 23:00:20,099 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 23:00:20,099 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 23:00:20,100 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 23:00:20,100 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 23:00:20,100 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 03b59b42cc833f5b28fc5dc7cc6711355c533ad94229ba44874c6d4d186d9dcb [2022-07-22 23:00:20,401 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 23:00:20,427 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 23:00:20,430 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 23:00:20,431 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 23:00:20,432 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 23:00:20,433 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-commit-tester/m0_drivers-net-slip-ko--108_1a--1b0b0ac-1.i [2022-07-22 23:00:20,513 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f0a367608/7d37eb2d8dad4b3493dc454853044ce3/FLAG2706731c9 [2022-07-22 23:00:21,289 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 23:00:21,290 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-commit-tester/m0_drivers-net-slip-ko--108_1a--1b0b0ac-1.i [2022-07-22 23:00:21,332 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f0a367608/7d37eb2d8dad4b3493dc454853044ce3/FLAG2706731c9 [2022-07-22 23:00:21,400 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f0a367608/7d37eb2d8dad4b3493dc454853044ce3 [2022-07-22 23:00:21,403 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 23:00:21,405 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 23:00:21,407 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 23:00:21,408 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 23:00:21,411 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 23:00:21,412 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 11:00:21" (1/1) ... [2022-07-22 23:00:21,413 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ffd50ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:00:21, skipping insertion in model container [2022-07-22 23:00:21,414 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 11:00:21" (1/1) ... [2022-07-22 23:00:21,420 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 23:00:21,519 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 23:00:22,586 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/ldv-commit-tester/m0_drivers-net-slip-ko--108_1a--1b0b0ac-1.i[202861,202874] [2022-07-22 23:00:22,612 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 23:00:22,627 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 23:00:22,969 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/ldv-commit-tester/m0_drivers-net-slip-ko--108_1a--1b0b0ac-1.i[202861,202874] [2022-07-22 23:00:22,977 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 23:00:23,078 INFO L208 MainTranslator]: Completed translation [2022-07-22 23:00:23,081 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:00:23 WrapperNode [2022-07-22 23:00:23,081 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 23:00:23,083 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 23:00:23,083 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 23:00:23,083 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 23:00:23,091 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:00:23" (1/1) ... [2022-07-22 23:00:23,164 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:00:23" (1/1) ... [2022-07-22 23:00:23,271 INFO L137 Inliner]: procedures = 157, calls = 812, calls flagged for inlining = 80, calls inlined = 79, statements flattened = 2787 [2022-07-22 23:00:23,272 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 23:00:23,273 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 23:00:23,274 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 23:00:23,274 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 23:00:23,282 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:00:23" (1/1) ... [2022-07-22 23:00:23,282 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:00:23" (1/1) ... [2022-07-22 23:00:23,317 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:00:23" (1/1) ... [2022-07-22 23:00:23,318 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:00:23" (1/1) ... [2022-07-22 23:00:23,416 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:00:23" (1/1) ... [2022-07-22 23:00:23,438 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:00:23" (1/1) ... [2022-07-22 23:00:23,457 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:00:23" (1/1) ... [2022-07-22 23:00:23,523 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 23:00:23,525 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 23:00:23,526 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 23:00:23,526 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 23:00:23,527 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:00:23" (1/1) ... [2022-07-22 23:00:23,535 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 23:00:23,546 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 23:00:23,565 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) [2022-07-22 23:00:23,580 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 [2022-07-22 23:00:23,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-07-22 23:00:23,616 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2022-07-22 23:00:23,616 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-07-22 23:00:23,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-07-22 23:00:23,616 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-22 23:00:23,617 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2022-07-22 23:00:23,617 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2022-07-22 23:00:23,617 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer_sync [2022-07-22 23:00:23,617 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer_sync [2022-07-22 23:00:23,617 INFO L130 BoogieDeclarations]: Found specification of procedure slhc_free [2022-07-22 23:00:23,617 INFO L138 BoogieDeclarations]: Found implementation of procedure slhc_free [2022-07-22 23:00:23,617 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-07-22 23:00:23,617 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-07-22 23:00:23,618 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2022-07-22 23:00:23,618 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2022-07-22 23:00:23,618 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-07-22 23:00:23,618 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-07-22 23:00:23,618 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-07-22 23:00:23,618 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-07-22 23:00:23,618 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_nonpositive_int [2022-07-22 23:00:23,619 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_nonpositive_int [2022-07-22 23:00:23,619 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_unlock [2022-07-22 23:00:23,619 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_unlock [2022-07-22 23:00:23,619 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-07-22 23:00:23,619 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-07-22 23:00:23,619 INFO L130 BoogieDeclarations]: Found specification of procedure sl_free_bufs [2022-07-22 23:00:23,619 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_free_bufs [2022-07-22 23:00:23,620 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-22 23:00:23,620 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_return_value [2022-07-22 23:00:23,620 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_return_value [2022-07-22 23:00:23,620 INFO L130 BoogieDeclarations]: Found specification of procedure dev_alloc_skb [2022-07-22 23:00:23,620 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_alloc_skb [2022-07-22 23:00:23,620 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-07-22 23:00:23,620 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-07-22 23:00:23,621 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-07-22 23:00:23,621 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-07-22 23:00:23,621 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-07-22 23:00:23,621 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-07-22 23:00:23,622 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer [2022-07-22 23:00:23,622 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer [2022-07-22 23:00:23,622 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-22 23:00:23,622 INFO L130 BoogieDeclarations]: Found specification of procedure sl_bump [2022-07-22 23:00:23,622 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_bump [2022-07-22 23:00:23,622 INFO L130 BoogieDeclarations]: Found specification of procedure slip_ioctl [2022-07-22 23:00:23,623 INFO L138 BoogieDeclarations]: Found implementation of procedure slip_ioctl [2022-07-22 23:00:23,623 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 23:00:23,623 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2022-07-22 23:00:23,623 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2022-07-22 23:00:23,623 INFO L130 BoogieDeclarations]: Found specification of procedure slip_close [2022-07-22 23:00:23,624 INFO L138 BoogieDeclarations]: Found implementation of procedure slip_close [2022-07-22 23:00:23,624 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-22 23:00:23,624 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-22 23:00:23,624 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-07-22 23:00:23,624 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2022-07-22 23:00:23,625 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2022-07-22 23:00:23,625 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-22 23:00:23,626 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2022-07-22 23:00:23,626 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2022-07-22 23:00:23,626 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2022-07-22 23:00:23,627 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2022-07-22 23:00:23,627 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2022-07-22 23:00:23,627 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2022-07-22 23:00:23,627 INFO L130 BoogieDeclarations]: Found specification of procedure sl_ioctl [2022-07-22 23:00:23,627 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_ioctl [2022-07-22 23:00:23,628 INFO L130 BoogieDeclarations]: Found specification of procedure tty_hangup [2022-07-22 23:00:23,628 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_hangup [2022-07-22 23:00:23,628 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-22 23:00:23,628 INFO L130 BoogieDeclarations]: Found specification of procedure netif_queue_stopped [2022-07-22 23:00:23,628 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_queue_stopped [2022-07-22 23:00:23,628 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-22 23:00:23,629 INFO L130 BoogieDeclarations]: Found specification of procedure init_timer_key [2022-07-22 23:00:23,629 INFO L138 BoogieDeclarations]: Found implementation of procedure init_timer_key [2022-07-22 23:00:23,629 INFO L130 BoogieDeclarations]: Found specification of procedure tty_devnum [2022-07-22 23:00:23,630 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_devnum [2022-07-22 23:00:23,630 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2022-07-22 23:00:23,630 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2022-07-22 23:00:23,630 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-07-22 23:00:23,630 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-07-22 23:00:23,630 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2022-07-22 23:00:23,630 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2022-07-22 23:00:23,631 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-07-22 23:00:23,631 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-07-22 23:00:23,631 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-07-22 23:00:23,631 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-07-22 23:00:23,631 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-07-22 23:00:23,631 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-07-22 23:00:23,631 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-07-22 23:00:23,631 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-07-22 23:00:23,632 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 23:00:23,632 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_bh [2022-07-22 23:00:23,632 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_bh [2022-07-22 23:00:23,632 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_handler_precall [2022-07-22 23:00:23,633 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_handler_precall [2022-07-22 23:00:23,633 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_clear_bit [2022-07-22 23:00:23,633 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_clear_bit [2022-07-22 23:00:23,634 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2022-07-22 23:00:23,634 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2022-07-22 23:00:23,634 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-07-22 23:00:23,634 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 23:00:23,635 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 23:00:23,635 INFO L130 BoogieDeclarations]: Found specification of procedure sl_unlock [2022-07-22 23:00:23,635 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_unlock [2022-07-22 23:00:23,635 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_bh [2022-07-22 23:00:23,635 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_bh [2022-07-22 23:00:24,151 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 23:00:24,156 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 23:00:26,697 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 23:00:26,729 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 23:00:26,737 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-22 23:00:26,741 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 11:00:26 BoogieIcfgContainer [2022-07-22 23:00:26,742 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 23:00:26,743 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 23:00:26,743 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 23:00:26,754 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 23:00:26,755 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 11:00:21" (1/3) ... [2022-07-22 23:00:26,755 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37f83c5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 11:00:26, skipping insertion in model container [2022-07-22 23:00:26,756 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:00:23" (2/3) ... [2022-07-22 23:00:26,757 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37f83c5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 11:00:26, skipping insertion in model container [2022-07-22 23:00:26,757 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 11:00:26" (3/3) ... [2022-07-22 23:00:26,760 INFO L111 eAbstractionObserver]: Analyzing ICFG m0_drivers-net-slip-ko--108_1a--1b0b0ac-1.i [2022-07-22 23:00:26,774 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 23:00:26,774 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 23:00:26,842 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 23:00:26,849 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@3353d80d, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@496166b0 [2022-07-22 23:00:26,849 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-22 23:00:26,857 INFO L276 IsEmpty]: Start isEmpty. Operand has 968 states, 716 states have (on average 1.4329608938547487) internal successors, (1026), 743 states have internal predecessors, (1026), 207 states have call successors, (207), 43 states have call predecessors, (207), 43 states have return successors, (207), 205 states have call predecessors, (207), 207 states have call successors, (207) [2022-07-22 23:00:26,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-07-22 23:00:26,872 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:00:26,873 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-22 23:00:26,874 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:00:26,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:00:26,879 INFO L85 PathProgramCache]: Analyzing trace with hash -579474216, now seen corresponding path program 1 times [2022-07-22 23:00:26,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:00:26,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101762385] [2022-07-22 23:00:26,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:00:26,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:00:27,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:00:27,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:00:27,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:00:27,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:00:27,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:00:27,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 23:00:27,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:00:27,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 23:00:27,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:00:27,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:00:27,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:00:27,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-22 23:00:27,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:00:27,392 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-22 23:00:27,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:00:27,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101762385] [2022-07-22 23:00:27,394 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101762385] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:00:27,394 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:00:27,394 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 23:00:27,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191650516] [2022-07-22 23:00:27,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:00:27,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 23:00:27,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:00:27,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 23:00:27,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 23:00:27,451 INFO L87 Difference]: Start difference. First operand has 968 states, 716 states have (on average 1.4329608938547487) internal successors, (1026), 743 states have internal predecessors, (1026), 207 states have call successors, (207), 43 states have call predecessors, (207), 43 states have return successors, (207), 205 states have call predecessors, (207), 207 states have call successors, (207) Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-07-22 23:00:28,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:00:28,644 INFO L93 Difference]: Finished difference Result 1950 states and 2923 transitions. [2022-07-22 23:00:28,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 23:00:28,647 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 59 [2022-07-22 23:00:28,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:00:28,677 INFO L225 Difference]: With dead ends: 1950 [2022-07-22 23:00:28,677 INFO L226 Difference]: Without dead ends: 947 [2022-07-22 23:00:28,688 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 23:00:28,701 INFO L413 NwaCegarLoop]: 1377 mSDtfsCounter, 1573 mSDsluCounter, 609 mSDsCounter, 0 mSdLazyCounter, 281 mSolverCounterSat, 364 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1710 SdHoareTripleChecker+Valid, 1986 SdHoareTripleChecker+Invalid, 645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 364 IncrementalHoareTripleChecker+Valid, 281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-22 23:00:28,705 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1710 Valid, 1986 Invalid, 645 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [364 Valid, 281 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-22 23:00:28,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 947 states. [2022-07-22 23:00:28,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 947 to 929. [2022-07-22 23:00:28,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 929 states, 686 states have (on average 1.4183673469387754) internal successors, (973), 710 states have internal predecessors, (973), 199 states have call successors, (199), 43 states have call predecessors, (199), 43 states have return successors, (199), 197 states have call predecessors, (199), 199 states have call successors, (199) [2022-07-22 23:00:28,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 929 states to 929 states and 1371 transitions. [2022-07-22 23:00:28,856 INFO L78 Accepts]: Start accepts. Automaton has 929 states and 1371 transitions. Word has length 59 [2022-07-22 23:00:28,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:00:28,856 INFO L495 AbstractCegarLoop]: Abstraction has 929 states and 1371 transitions. [2022-07-22 23:00:28,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-07-22 23:00:28,857 INFO L276 IsEmpty]: Start isEmpty. Operand 929 states and 1371 transitions. [2022-07-22 23:00:28,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-07-22 23:00:28,865 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:00:28,865 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-22 23:00:28,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 23:00:28,866 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:00:28,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:00:28,866 INFO L85 PathProgramCache]: Analyzing trace with hash -155827494, now seen corresponding path program 1 times [2022-07-22 23:00:28,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:00:28,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777051710] [2022-07-22 23:00:28,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:00:28,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:00:28,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:00:28,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:00:28,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:00:28,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:00:28,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:00:29,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 23:00:29,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:00:29,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 23:00:29,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:00:29,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:00:29,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:00:29,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-22 23:00:29,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:00:29,043 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-22 23:00:29,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:00:29,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777051710] [2022-07-22 23:00:29,044 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777051710] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:00:29,045 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:00:29,045 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 23:00:29,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486867805] [2022-07-22 23:00:29,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:00:29,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 23:00:29,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:00:29,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 23:00:29,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 23:00:29,048 INFO L87 Difference]: Start difference. First operand 929 states and 1371 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-07-22 23:00:30,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:00:30,594 INFO L93 Difference]: Finished difference Result 1859 states and 2750 transitions. [2022-07-22 23:00:30,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 23:00:30,595 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 59 [2022-07-22 23:00:30,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:00:30,601 INFO L225 Difference]: With dead ends: 1859 [2022-07-22 23:00:30,602 INFO L226 Difference]: Without dead ends: 947 [2022-07-22 23:00:30,605 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-22 23:00:30,606 INFO L413 NwaCegarLoop]: 1327 mSDtfsCounter, 372 mSDsluCounter, 2211 mSDsCounter, 0 mSdLazyCounter, 1378 mSolverCounterSat, 198 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 422 SdHoareTripleChecker+Valid, 3538 SdHoareTripleChecker+Invalid, 1576 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 198 IncrementalHoareTripleChecker+Valid, 1378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-22 23:00:30,607 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [422 Valid, 3538 Invalid, 1576 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [198 Valid, 1378 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-22 23:00:30,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 947 states. [2022-07-22 23:00:30,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 947 to 929. [2022-07-22 23:00:30,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 929 states, 686 states have (on average 1.4169096209912537) internal successors, (972), 710 states have internal predecessors, (972), 199 states have call successors, (199), 43 states have call predecessors, (199), 43 states have return successors, (199), 197 states have call predecessors, (199), 199 states have call successors, (199) [2022-07-22 23:00:30,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 929 states to 929 states and 1370 transitions. [2022-07-22 23:00:30,648 INFO L78 Accepts]: Start accepts. Automaton has 929 states and 1370 transitions. Word has length 59 [2022-07-22 23:00:30,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:00:30,648 INFO L495 AbstractCegarLoop]: Abstraction has 929 states and 1370 transitions. [2022-07-22 23:00:30,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-07-22 23:00:30,649 INFO L276 IsEmpty]: Start isEmpty. Operand 929 states and 1370 transitions. [2022-07-22 23:00:30,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-07-22 23:00:30,651 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:00:30,651 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-22 23:00:30,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 23:00:30,651 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:00:30,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:00:30,652 INFO L85 PathProgramCache]: Analyzing trace with hash 1779924711, now seen corresponding path program 1 times [2022-07-22 23:00:30,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:00:30,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280005616] [2022-07-22 23:00:30,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:00:30,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:00:30,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:00:30,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:00:30,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:00:30,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:00:30,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:00:30,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 23:00:30,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:00:30,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 23:00:30,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:00:30,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:00:30,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:00:30,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-22 23:00:30,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:00:30,807 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-22 23:00:30,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:00:30,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280005616] [2022-07-22 23:00:30,808 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280005616] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:00:30,808 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:00:30,808 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 23:00:30,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542508068] [2022-07-22 23:00:30,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:00:30,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 23:00:30,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:00:30,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 23:00:30,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 23:00:30,811 INFO L87 Difference]: Start difference. First operand 929 states and 1370 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-07-22 23:00:32,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:00:32,759 INFO L93 Difference]: Finished difference Result 1461 states and 2231 transitions. [2022-07-22 23:00:32,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 23:00:32,760 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 62 [2022-07-22 23:00:32,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:00:32,769 INFO L225 Difference]: With dead ends: 1461 [2022-07-22 23:00:32,770 INFO L226 Difference]: Without dead ends: 1459 [2022-07-22 23:00:32,771 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-22 23:00:32,772 INFO L413 NwaCegarLoop]: 2138 mSDtfsCounter, 1296 mSDsluCounter, 3176 mSDsCounter, 0 mSdLazyCounter, 1550 mSolverCounterSat, 422 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1381 SdHoareTripleChecker+Valid, 5314 SdHoareTripleChecker+Invalid, 1972 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 422 IncrementalHoareTripleChecker+Valid, 1550 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-22 23:00:32,772 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1381 Valid, 5314 Invalid, 1972 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [422 Valid, 1550 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-07-22 23:00:32,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1459 states. [2022-07-22 23:00:32,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1459 to 931. [2022-07-22 23:00:32,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 931 states, 688 states have (on average 1.4156976744186047) internal successors, (974), 712 states have internal predecessors, (974), 199 states have call successors, (199), 43 states have call predecessors, (199), 43 states have return successors, (199), 197 states have call predecessors, (199), 199 states have call successors, (199) [2022-07-22 23:00:32,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 931 states to 931 states and 1372 transitions. [2022-07-22 23:00:32,847 INFO L78 Accepts]: Start accepts. Automaton has 931 states and 1372 transitions. Word has length 62 [2022-07-22 23:00:32,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:00:32,848 INFO L495 AbstractCegarLoop]: Abstraction has 931 states and 1372 transitions. [2022-07-22 23:00:32,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-07-22 23:00:32,849 INFO L276 IsEmpty]: Start isEmpty. Operand 931 states and 1372 transitions. [2022-07-22 23:00:32,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-07-22 23:00:32,851 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:00:32,851 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-22 23:00:32,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-22 23:00:32,852 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:00:32,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:00:32,853 INFO L85 PathProgramCache]: Analyzing trace with hash 2124530077, now seen corresponding path program 1 times [2022-07-22 23:00:32,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:00:32,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984102258] [2022-07-22 23:00:32,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:00:32,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:00:32,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:00:32,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:00:32,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:00:32,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:00:32,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:00:32,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 23:00:32,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:00:32,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 23:00:32,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:00:32,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:00:32,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:00:32,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-22 23:00:32,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:00:32,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 23:00:32,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:00:32,997 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-22 23:00:32,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:00:32,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984102258] [2022-07-22 23:00:32,998 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984102258] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:00:32,998 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:00:32,998 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 23:00:32,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168932107] [2022-07-22 23:00:32,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:00:32,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 23:00:32,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:00:33,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 23:00:33,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-22 23:00:33,001 INFO L87 Difference]: Start difference. First operand 931 states and 1372 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-22 23:00:35,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:00:35,050 INFO L93 Difference]: Finished difference Result 2375 states and 3581 transitions. [2022-07-22 23:00:35,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 23:00:35,051 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 72 [2022-07-22 23:00:35,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:00:35,063 INFO L225 Difference]: With dead ends: 2375 [2022-07-22 23:00:35,063 INFO L226 Difference]: Without dead ends: 1463 [2022-07-22 23:00:35,070 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-07-22 23:00:35,080 INFO L413 NwaCegarLoop]: 1810 mSDtfsCounter, 2032 mSDsluCounter, 1582 mSDsCounter, 0 mSdLazyCounter, 1415 mSolverCounterSat, 421 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2301 SdHoareTripleChecker+Valid, 3392 SdHoareTripleChecker+Invalid, 1836 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 421 IncrementalHoareTripleChecker+Valid, 1415 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-22 23:00:35,083 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2301 Valid, 3392 Invalid, 1836 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [421 Valid, 1415 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-07-22 23:00:35,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1463 states. [2022-07-22 23:00:35,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1463 to 932. [2022-07-22 23:00:35,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 932 states, 689 states have (on average 1.4150943396226414) internal successors, (975), 713 states have internal predecessors, (975), 199 states have call successors, (199), 43 states have call predecessors, (199), 43 states have return successors, (199), 197 states have call predecessors, (199), 199 states have call successors, (199) [2022-07-22 23:00:35,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 932 states to 932 states and 1373 transitions. [2022-07-22 23:00:35,169 INFO L78 Accepts]: Start accepts. Automaton has 932 states and 1373 transitions. Word has length 72 [2022-07-22 23:00:35,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:00:35,169 INFO L495 AbstractCegarLoop]: Abstraction has 932 states and 1373 transitions. [2022-07-22 23:00:35,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-22 23:00:35,170 INFO L276 IsEmpty]: Start isEmpty. Operand 932 states and 1373 transitions. [2022-07-22 23:00:35,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-07-22 23:00:35,173 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:00:35,173 INFO L195 NwaCegarLoop]: trace histogram [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, 1] [2022-07-22 23:00:35,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-22 23:00:35,174 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:00:35,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:00:35,174 INFO L85 PathProgramCache]: Analyzing trace with hash -45216834, now seen corresponding path program 1 times [2022-07-22 23:00:35,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:00:35,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000569217] [2022-07-22 23:00:35,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:00:35,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:00:35,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:00:35,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:00:35,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:00:35,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:00:35,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:00:35,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 23:00:35,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:00:35,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 23:00:35,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:00:35,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:00:35,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:00:35,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-22 23:00:35,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:00:35,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-22 23:00:35,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:00:35,315 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-22 23:00:35,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:00:35,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000569217] [2022-07-22 23:00:35,316 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000569217] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:00:35,316 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:00:35,316 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 23:00:35,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249772618] [2022-07-22 23:00:35,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:00:35,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 23:00:35,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:00:35,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 23:00:35,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 23:00:35,318 INFO L87 Difference]: Start difference. First operand 932 states and 1373 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-22 23:00:38,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:00:38,728 INFO L93 Difference]: Finished difference Result 2242 states and 3484 transitions. [2022-07-22 23:00:38,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-22 23:00:38,729 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 74 [2022-07-22 23:00:38,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:00:38,742 INFO L225 Difference]: With dead ends: 2242 [2022-07-22 23:00:38,742 INFO L226 Difference]: Without dead ends: 2240 [2022-07-22 23:00:38,744 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-07-22 23:00:38,745 INFO L413 NwaCegarLoop]: 2579 mSDtfsCounter, 2635 mSDsluCounter, 5536 mSDsCounter, 0 mSdLazyCounter, 2667 mSolverCounterSat, 817 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2833 SdHoareTripleChecker+Valid, 8115 SdHoareTripleChecker+Invalid, 3484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 817 IncrementalHoareTripleChecker+Valid, 2667 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-07-22 23:00:38,745 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2833 Valid, 8115 Invalid, 3484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [817 Valid, 2667 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-07-22 23:00:38,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2240 states. [2022-07-22 23:00:38,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2240 to 934. [2022-07-22 23:00:38,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 934 states, 690 states have (on average 1.4144927536231884) internal successors, (976), 713 states have internal predecessors, (976), 200 states have call successors, (200), 43 states have call predecessors, (200), 43 states have return successors, (200), 198 states have call predecessors, (200), 200 states have call successors, (200) [2022-07-22 23:00:38,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 934 states to 934 states and 1376 transitions. [2022-07-22 23:00:38,820 INFO L78 Accepts]: Start accepts. Automaton has 934 states and 1376 transitions. Word has length 74 [2022-07-22 23:00:38,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:00:38,821 INFO L495 AbstractCegarLoop]: Abstraction has 934 states and 1376 transitions. [2022-07-22 23:00:38,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-22 23:00:38,821 INFO L276 IsEmpty]: Start isEmpty. Operand 934 states and 1376 transitions. [2022-07-22 23:00:38,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-07-22 23:00:38,827 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:00:38,827 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:00:38,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-22 23:00:38,828 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:00:38,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:00:38,828 INFO L85 PathProgramCache]: Analyzing trace with hash -1411070669, now seen corresponding path program 1 times [2022-07-22 23:00:38,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:00:38,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016366397] [2022-07-22 23:00:38,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:00:38,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:00:38,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:00:39,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:00:39,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:00:39,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:00:39,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:00:39,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 23:00:39,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:00:39,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 23:00:39,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:00:39,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:00:39,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:00:39,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-22 23:00:39,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:00:39,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-22 23:00:39,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:00:39,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-22 23:00:39,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:00:39,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-22 23:00:39,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:00:39,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-22 23:00:39,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:00:39,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-22 23:00:39,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:00:39,121 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-22 23:00:39,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:00:39,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016366397] [2022-07-22 23:00:39,122 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016366397] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:00:39,122 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:00:39,122 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 23:00:39,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411340275] [2022-07-22 23:00:39,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:00:39,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 23:00:39,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:00:39,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 23:00:39,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 23:00:39,126 INFO L87 Difference]: Start difference. First operand 934 states and 1376 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-22 23:00:40,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:00:40,023 INFO L93 Difference]: Finished difference Result 1896 states and 2786 transitions. [2022-07-22 23:00:40,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 23:00:40,023 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 104 [2022-07-22 23:00:40,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:00:40,029 INFO L225 Difference]: With dead ends: 1896 [2022-07-22 23:00:40,030 INFO L226 Difference]: Without dead ends: 981 [2022-07-22 23:00:40,033 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 23:00:40,034 INFO L413 NwaCegarLoop]: 1320 mSDtfsCounter, 1481 mSDsluCounter, 599 mSDsCounter, 0 mSdLazyCounter, 288 mSolverCounterSat, 360 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1607 SdHoareTripleChecker+Valid, 1919 SdHoareTripleChecker+Invalid, 648 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 360 IncrementalHoareTripleChecker+Valid, 288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-22 23:00:40,034 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1607 Valid, 1919 Invalid, 648 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [360 Valid, 288 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-22 23:00:40,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 981 states. [2022-07-22 23:00:40,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 981 to 954. [2022-07-22 23:00:40,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 954 states, 704 states have (on average 1.40625) internal successors, (990), 727 states have internal predecessors, (990), 202 states have call successors, (202), 47 states have call predecessors, (202), 47 states have return successors, (202), 200 states have call predecessors, (202), 202 states have call successors, (202) [2022-07-22 23:00:40,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 954 states to 954 states and 1394 transitions. [2022-07-22 23:00:40,115 INFO L78 Accepts]: Start accepts. Automaton has 954 states and 1394 transitions. Word has length 104 [2022-07-22 23:00:40,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:00:40,116 INFO L495 AbstractCegarLoop]: Abstraction has 954 states and 1394 transitions. [2022-07-22 23:00:40,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-22 23:00:40,116 INFO L276 IsEmpty]: Start isEmpty. Operand 954 states and 1394 transitions. [2022-07-22 23:00:40,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-07-22 23:00:40,121 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:00:40,121 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:00:40,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-22 23:00:40,122 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:00:40,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:00:40,122 INFO L85 PathProgramCache]: Analyzing trace with hash -1281162515, now seen corresponding path program 1 times [2022-07-22 23:00:40,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:00:40,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967453738] [2022-07-22 23:00:40,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:00:40,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:00:40,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:00:40,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:00:40,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:00:40,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:00:40,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:00:40,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 23:00:40,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:00:40,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 23:00:40,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:00:40,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:00:40,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:00:40,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-22 23:00:40,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:00:40,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-22 23:00:40,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:00:40,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-22 23:00:40,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:00:40,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-22 23:00:40,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:00:40,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-22 23:00:40,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:00:40,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-22 23:00:40,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:00:40,362 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-22 23:00:40,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:00:40,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967453738] [2022-07-22 23:00:40,362 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967453738] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:00:40,362 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:00:40,362 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 23:00:40,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38478851] [2022-07-22 23:00:40,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:00:40,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 23:00:40,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:00:40,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 23:00:40,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-22 23:00:40,365 INFO L87 Difference]: Start difference. First operand 954 states and 1394 transitions. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-22 23:00:42,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:00:42,198 INFO L93 Difference]: Finished difference Result 2412 states and 3616 transitions. [2022-07-22 23:00:42,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 23:00:42,199 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 106 [2022-07-22 23:00:42,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:00:42,208 INFO L225 Difference]: With dead ends: 2412 [2022-07-22 23:00:42,209 INFO L226 Difference]: Without dead ends: 1497 [2022-07-22 23:00:42,212 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-07-22 23:00:42,215 INFO L413 NwaCegarLoop]: 1875 mSDtfsCounter, 2123 mSDsluCounter, 1627 mSDsCounter, 0 mSdLazyCounter, 1436 mSolverCounterSat, 518 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2397 SdHoareTripleChecker+Valid, 3502 SdHoareTripleChecker+Invalid, 1954 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 518 IncrementalHoareTripleChecker+Valid, 1436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-22 23:00:42,215 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2397 Valid, 3502 Invalid, 1954 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [518 Valid, 1436 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-22 23:00:42,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1497 states. [2022-07-22 23:00:42,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1497 to 958. [2022-07-22 23:00:42,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 958 states, 708 states have (on average 1.405367231638418) internal successors, (995), 731 states have internal predecessors, (995), 202 states have call successors, (202), 47 states have call predecessors, (202), 47 states have return successors, (202), 200 states have call predecessors, (202), 202 states have call successors, (202) [2022-07-22 23:00:42,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 958 states to 958 states and 1399 transitions. [2022-07-22 23:00:42,321 INFO L78 Accepts]: Start accepts. Automaton has 958 states and 1399 transitions. Word has length 106 [2022-07-22 23:00:42,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:00:42,323 INFO L495 AbstractCegarLoop]: Abstraction has 958 states and 1399 transitions. [2022-07-22 23:00:42,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-22 23:00:42,323 INFO L276 IsEmpty]: Start isEmpty. Operand 958 states and 1399 transitions. [2022-07-22 23:00:42,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-07-22 23:00:42,329 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:00:42,329 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:00:42,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-22 23:00:42,330 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:00:42,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:00:42,330 INFO L85 PathProgramCache]: Analyzing trace with hash 10856094, now seen corresponding path program 1 times [2022-07-22 23:00:42,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:00:42,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802641806] [2022-07-22 23:00:42,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:00:42,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:00:42,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:00:42,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:00:42,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:00:42,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:00:42,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:00:42,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 23:00:42,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:00:42,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 23:00:42,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:00:42,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:00:42,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:00:42,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-22 23:00:42,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:00:42,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-22 23:00:42,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:00:42,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-22 23:00:42,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:00:42,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-22 23:00:42,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:00:42,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-22 23:00:42,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:00:42,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-22 23:00:42,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:00:42,551 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-22 23:00:42,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:00:42,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802641806] [2022-07-22 23:00:42,552 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802641806] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:00:42,553 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:00:42,553 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 23:00:42,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008799466] [2022-07-22 23:00:42,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:00:42,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 23:00:42,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:00:42,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 23:00:42,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 23:00:42,555 INFO L87 Difference]: Start difference. First operand 958 states and 1399 transitions. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-22 23:00:43,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:00:43,612 INFO L93 Difference]: Finished difference Result 1905 states and 2803 transitions. [2022-07-22 23:00:43,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 23:00:43,612 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 109 [2022-07-22 23:00:43,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:00:43,617 INFO L225 Difference]: With dead ends: 1905 [2022-07-22 23:00:43,617 INFO L226 Difference]: Without dead ends: 986 [2022-07-22 23:00:43,620 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 23:00:43,621 INFO L413 NwaCegarLoop]: 1314 mSDtfsCounter, 365 mSDsluCounter, 1389 mSDsCounter, 0 mSdLazyCounter, 805 mSolverCounterSat, 207 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 415 SdHoareTripleChecker+Valid, 2703 SdHoareTripleChecker+Invalid, 1012 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 207 IncrementalHoareTripleChecker+Valid, 805 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-22 23:00:43,621 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [415 Valid, 2703 Invalid, 1012 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [207 Valid, 805 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-22 23:00:43,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 986 states. [2022-07-22 23:00:43,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 986 to 958. [2022-07-22 23:00:43,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 958 states, 708 states have (on average 1.4011299435028248) internal successors, (992), 731 states have internal predecessors, (992), 202 states have call successors, (202), 47 states have call predecessors, (202), 47 states have return successors, (202), 200 states have call predecessors, (202), 202 states have call successors, (202) [2022-07-22 23:00:43,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 958 states to 958 states and 1396 transitions. [2022-07-22 23:00:43,734 INFO L78 Accepts]: Start accepts. Automaton has 958 states and 1396 transitions. Word has length 109 [2022-07-22 23:00:43,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:00:43,734 INFO L495 AbstractCegarLoop]: Abstraction has 958 states and 1396 transitions. [2022-07-22 23:00:43,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-22 23:00:43,735 INFO L276 IsEmpty]: Start isEmpty. Operand 958 states and 1396 transitions. [2022-07-22 23:00:43,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-22 23:00:43,739 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:00:43,740 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:00:43,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-22 23:00:43,740 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:00:43,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:00:43,741 INFO L85 PathProgramCache]: Analyzing trace with hash 1938120389, now seen corresponding path program 1 times [2022-07-22 23:00:43,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:00:43,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927068670] [2022-07-22 23:00:43,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:00:43,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:00:43,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:00:43,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:00:43,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:00:43,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:00:43,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:00:43,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 23:00:43,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:00:43,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 23:00:43,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:00:43,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:00:43,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:00:43,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-22 23:00:43,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:00:43,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-22 23:00:43,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:00:43,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-22 23:00:43,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:00:43,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-22 23:00:43,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:00:43,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-22 23:00:43,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:00:43,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-22 23:00:43,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:00:43,971 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-22 23:00:43,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:00:43,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927068670] [2022-07-22 23:00:43,972 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927068670] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 23:00:43,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1310490850] [2022-07-22 23:00:43,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:00:43,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 23:00:43,973 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 23:00:43,975 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) [2022-07-22 23:00:43,997 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-22 23:00:44,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:00:44,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 939 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-22 23:00:44,406 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 23:00:44,638 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-22 23:00:44,638 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 23:00:44,811 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-22 23:00:44,811 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1310490850] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 23:00:44,811 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 23:00:44,811 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 5] total 11 [2022-07-22 23:00:44,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198589312] [2022-07-22 23:00:44,811 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 23:00:44,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-22 23:00:44,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:00:44,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-22 23:00:44,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-07-22 23:00:44,813 INFO L87 Difference]: Start difference. First operand 958 states and 1396 transitions. Second operand has 11 states, 11 states have (on average 14.818181818181818) internal successors, (163), 10 states have internal predecessors, (163), 4 states have call successors, (29), 4 states have call predecessors, (29), 3 states have return successors, (27), 4 states have call predecessors, (27), 4 states have call successors, (27) [2022-07-22 23:00:49,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:00:49,826 INFO L93 Difference]: Finished difference Result 3941 states and 6074 transitions. [2022-07-22 23:00:49,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-22 23:00:49,826 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 14.818181818181818) internal successors, (163), 10 states have internal predecessors, (163), 4 states have call successors, (29), 4 states have call predecessors, (29), 3 states have return successors, (27), 4 states have call predecessors, (27), 4 states have call successors, (27) Word has length 112 [2022-07-22 23:00:49,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:00:49,842 INFO L225 Difference]: With dead ends: 3941 [2022-07-22 23:00:49,842 INFO L226 Difference]: Without dead ends: 3022 [2022-07-22 23:00:49,846 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 240 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2022-07-22 23:00:49,847 INFO L413 NwaCegarLoop]: 1914 mSDtfsCounter, 4282 mSDsluCounter, 7208 mSDsCounter, 0 mSdLazyCounter, 6858 mSolverCounterSat, 1369 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4697 SdHoareTripleChecker+Valid, 9122 SdHoareTripleChecker+Invalid, 8227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1369 IncrementalHoareTripleChecker+Valid, 6858 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-07-22 23:00:49,847 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4697 Valid, 9122 Invalid, 8227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1369 Valid, 6858 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2022-07-22 23:00:49,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3022 states. [2022-07-22 23:00:50,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3022 to 965. [2022-07-22 23:00:50,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 965 states, 715 states have (on average 1.4) internal successors, (1001), 738 states have internal predecessors, (1001), 202 states have call successors, (202), 47 states have call predecessors, (202), 47 states have return successors, (202), 200 states have call predecessors, (202), 202 states have call successors, (202) [2022-07-22 23:00:50,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 965 states to 965 states and 1405 transitions. [2022-07-22 23:00:50,023 INFO L78 Accepts]: Start accepts. Automaton has 965 states and 1405 transitions. Word has length 112 [2022-07-22 23:00:50,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:00:50,023 INFO L495 AbstractCegarLoop]: Abstraction has 965 states and 1405 transitions. [2022-07-22 23:00:50,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.818181818181818) internal successors, (163), 10 states have internal predecessors, (163), 4 states have call successors, (29), 4 states have call predecessors, (29), 3 states have return successors, (27), 4 states have call predecessors, (27), 4 states have call successors, (27) [2022-07-22 23:00:50,024 INFO L276 IsEmpty]: Start isEmpty. Operand 965 states and 1405 transitions. [2022-07-22 23:00:50,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-07-22 23:00:50,029 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:00:50,029 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:00:50,063 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-22 23:00:50,231 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 [2022-07-22 23:00:50,232 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:00:50,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:00:50,232 INFO L85 PathProgramCache]: Analyzing trace with hash 1506190142, now seen corresponding path program 1 times [2022-07-22 23:00:50,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:00:50,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57346708] [2022-07-22 23:00:50,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:00:50,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:00:50,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:00:50,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:00:50,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:00:50,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:00:50,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:00:50,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 23:00:50,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:00:50,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 23:00:50,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:00:50,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:00:50,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:00:50,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-22 23:00:50,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:00:50,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-22 23:00:50,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:00:50,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-22 23:00:50,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:00:50,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-22 23:00:50,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:00:50,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-22 23:00:50,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:00:50,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-22 23:00:50,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:00:50,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-22 23:00:50,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:00:50,643 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-22 23:00:50,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:00:50,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57346708] [2022-07-22 23:00:50,644 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57346708] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 23:00:50,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [789001977] [2022-07-22 23:00:50,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:00:50,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 23:00:50,644 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 23:00:50,646 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) [2022-07-22 23:00:50,677 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process