./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--abituguru3.ko-main.cil.out.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-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--abituguru3.ko-main.cil.out.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 7d6844ab51374c8e656234daa6d7df2c3927c38bae9fcbeafc3fadf6f3b893b1 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 23:23:37,946 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 23:23:37,948 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 23:23:37,997 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 23:23:37,998 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 23:23:37,999 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 23:23:38,001 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 23:23:38,003 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 23:23:38,004 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 23:23:38,008 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 23:23:38,009 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 23:23:38,011 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 23:23:38,012 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 23:23:38,013 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 23:23:38,014 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 23:23:38,017 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 23:23:38,018 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 23:23:38,019 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 23:23:38,020 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 23:23:38,025 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 23:23:38,027 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 23:23:38,028 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 23:23:38,028 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 23:23:38,029 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 23:23:38,030 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 23:23:38,036 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 23:23:38,037 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 23:23:38,037 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 23:23:38,038 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 23:23:38,039 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 23:23:38,040 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 23:23:38,040 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 23:23:38,042 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 23:23:38,042 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 23:23:38,043 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 23:23:38,045 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 23:23:38,045 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 23:23:38,045 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 23:23:38,046 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 23:23:38,046 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 23:23:38,047 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 23:23:38,048 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 23:23:38,049 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-22 23:23:38,075 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 23:23:38,076 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 23:23:38,076 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 23:23:38,076 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 23:23:38,077 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 23:23:38,078 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 23:23:38,078 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 23:23:38,078 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 23:23:38,078 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 23:23:38,079 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 23:23:38,080 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 23:23:38,080 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 23:23:38,080 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 23:23:38,080 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 23:23:38,081 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 23:23:38,081 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 23:23:38,081 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 23:23:38,081 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 23:23:38,081 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 23:23:38,082 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 23:23:38,082 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 23:23:38,082 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 23:23:38,082 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 23:23:38,082 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 23:23:38,083 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 23:23:38,083 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 23:23:38,083 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 23:23:38,083 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 23:23:38,083 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 23:23:38,084 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 23:23:38,084 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7d6844ab51374c8e656234daa6d7df2c3927c38bae9fcbeafc3fadf6f3b893b1 [2022-07-22 23:23:38,325 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 23:23:38,343 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 23:23:38,345 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 23:23:38,346 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 23:23:38,347 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 23:23:38,348 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--abituguru3.ko-main.cil.out.i [2022-07-22 23:23:38,412 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2f959e46/ad9dabb8b76947d79e6a71faa562b4b5/FLAGe989cd3f5 [2022-07-22 23:23:38,970 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 23:23:38,971 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--abituguru3.ko-main.cil.out.i [2022-07-22 23:23:38,996 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2f959e46/ad9dabb8b76947d79e6a71faa562b4b5/FLAGe989cd3f5 [2022-07-22 23:23:39,376 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2f959e46/ad9dabb8b76947d79e6a71faa562b4b5 [2022-07-22 23:23:39,391 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 23:23:39,392 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 23:23:39,400 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 23:23:39,400 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 23:23:39,403 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 23:23:39,404 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 11:23:39" (1/1) ... [2022-07-22 23:23:39,405 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e662475 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:23:39, skipping insertion in model container [2022-07-22 23:23:39,405 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 11:23:39" (1/1) ... [2022-07-22 23:23:39,411 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 23:23:39,485 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 23:23:40,133 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-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--abituguru3.ko-main.cil.out.i[132927,132940] [2022-07-22 23:23:40,201 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 23:23:40,318 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 23:23:40,564 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-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--abituguru3.ko-main.cil.out.i[132927,132940] [2022-07-22 23:23:40,575 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 23:23:40,739 INFO L208 MainTranslator]: Completed translation [2022-07-22 23:23:40,741 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:23:40 WrapperNode [2022-07-22 23:23:40,741 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 23:23:40,743 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 23:23:40,744 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 23:23:40,744 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 23:23:40,752 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:23:40" (1/1) ... [2022-07-22 23:23:40,847 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:23:40" (1/1) ... [2022-07-22 23:23:41,107 INFO L137 Inliner]: procedures = 133, calls = 4943, calls flagged for inlining = 57, calls inlined = 51, statements flattened = 6018 [2022-07-22 23:23:41,108 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 23:23:41,110 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 23:23:41,110 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 23:23:41,110 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 23:23:41,121 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:23:40" (1/1) ... [2022-07-22 23:23:41,122 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:23:40" (1/1) ... [2022-07-22 23:23:41,196 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:23:40" (1/1) ... [2022-07-22 23:23:41,197 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:23:40" (1/1) ... [2022-07-22 23:23:41,404 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:23:40" (1/1) ... [2022-07-22 23:23:41,437 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:23:40" (1/1) ... [2022-07-22 23:23:41,474 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:23:40" (1/1) ... [2022-07-22 23:23:41,533 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 23:23:41,534 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 23:23:41,534 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 23:23:41,534 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 23:23:41,535 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:23:40" (1/1) ... [2022-07-22 23:23:41,558 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 23:23:41,569 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 23:23:41,582 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 23:23:41,605 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 23:23:41,622 INFO L130 BoogieDeclarations]: Found specification of procedure abituguru3_wait_while_busy [2022-07-22 23:23:41,622 INFO L138 BoogieDeclarations]: Found implementation of procedure abituguru3_wait_while_busy [2022-07-22 23:23:41,623 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2022-07-22 23:23:41,623 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2022-07-22 23:23:41,623 INFO L130 BoogieDeclarations]: Found specification of procedure abituguru3_wait_for_read [2022-07-22 23:23:41,623 INFO L138 BoogieDeclarations]: Found implementation of procedure abituguru3_wait_for_read [2022-07-22 23:23:41,623 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2022-07-22 23:23:41,623 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2022-07-22 23:23:41,624 INFO L130 BoogieDeclarations]: Found specification of procedure platform_driver_unregister [2022-07-22 23:23:41,624 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_driver_unregister [2022-07-22 23:23:41,624 INFO L130 BoogieDeclarations]: Found specification of procedure dmi_get_system_info [2022-07-22 23:23:41,624 INFO L138 BoogieDeclarations]: Found implementation of procedure dmi_get_system_info [2022-07-22 23:23:41,624 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-22 23:23:41,624 INFO L130 BoogieDeclarations]: Found specification of procedure abituguru3_read [2022-07-22 23:23:41,625 INFO L138 BoogieDeclarations]: Found implementation of procedure abituguru3_read [2022-07-22 23:23:41,625 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-07-22 23:23:41,625 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-07-22 23:23:41,625 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-22 23:23:41,625 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-07-22 23:23:41,625 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-07-22 23:23:41,625 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-07-22 23:23:41,626 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-07-22 23:23:41,626 INFO L130 BoogieDeclarations]: Found specification of procedure device_create_file [2022-07-22 23:23:41,626 INFO L138 BoogieDeclarations]: Found implementation of procedure device_create_file [2022-07-22 23:23:41,626 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_update_lock_of_abituguru3_data [2022-07-22 23:23:41,626 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_update_lock_of_abituguru3_data [2022-07-22 23:23:41,626 INFO L130 BoogieDeclarations]: Found specification of procedure abituguru3_suspend [2022-07-22 23:23:41,627 INFO L138 BoogieDeclarations]: Found implementation of procedure abituguru3_suspend [2022-07-22 23:23:41,627 INFO L130 BoogieDeclarations]: Found specification of procedure abituguru3_read_increment_offset [2022-07-22 23:23:41,627 INFO L138 BoogieDeclarations]: Found implementation of procedure abituguru3_read_increment_offset [2022-07-22 23:23:41,627 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-22 23:23:41,627 INFO L130 BoogieDeclarations]: Found specification of procedure inb_p [2022-07-22 23:23:41,627 INFO L138 BoogieDeclarations]: Found implementation of procedure inb_p [2022-07-22 23:23:41,627 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-07-22 23:23:41,628 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-07-22 23:23:41,628 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 23:23:41,628 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-22 23:23:41,628 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-22 23:23:41,628 INFO L130 BoogieDeclarations]: Found specification of procedure abituguru3_update_device [2022-07-22 23:23:41,628 INFO L138 BoogieDeclarations]: Found implementation of procedure abituguru3_update_device [2022-07-22 23:23:41,629 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-22 23:23:41,629 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-22 23:23:41,629 INFO L130 BoogieDeclarations]: Found specification of procedure platform_set_drvdata [2022-07-22 23:23:41,629 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_set_drvdata [2022-07-22 23:23:41,630 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-22 23:23:41,630 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_update_lock_of_abituguru3_data [2022-07-22 23:23:41,630 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_update_lock_of_abituguru3_data [2022-07-22 23:23:41,630 INFO L130 BoogieDeclarations]: Found specification of procedure strcspn [2022-07-22 23:23:41,630 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2022-07-22 23:23:41,630 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2022-07-22 23:23:41,631 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2022-07-22 23:23:41,631 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2022-07-22 23:23:41,631 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 23:23:41,631 INFO L130 BoogieDeclarations]: Found specification of procedure device_remove_file [2022-07-22 23:23:41,631 INFO L138 BoogieDeclarations]: Found implementation of procedure device_remove_file [2022-07-22 23:23:41,632 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 23:23:41,632 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 23:23:41,633 INFO L130 BoogieDeclarations]: Found specification of procedure abituguru3_resume [2022-07-22 23:23:41,633 INFO L138 BoogieDeclarations]: Found implementation of procedure abituguru3_resume [2022-07-22 23:23:41,634 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-07-22 23:23:41,634 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-07-22 23:23:41,946 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 23:23:41,948 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 23:23:52,448 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 23:23:52,461 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 23:23:52,462 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-22 23:23:52,466 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 11:23:52 BoogieIcfgContainer [2022-07-22 23:23:52,468 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 23:23:52,470 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 23:23:52,470 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 23:23:52,473 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 23:23:52,474 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 11:23:39" (1/3) ... [2022-07-22 23:23:52,474 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20e6fa9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 11:23:52, skipping insertion in model container [2022-07-22 23:23:52,475 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:23:40" (2/3) ... [2022-07-22 23:23:52,475 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20e6fa9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 11:23:52, skipping insertion in model container [2022-07-22 23:23:52,475 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 11:23:52" (3/3) ... [2022-07-22 23:23:52,477 INFO L111 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--hwmon--abituguru3.ko-main.cil.out.i [2022-07-22 23:23:52,492 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 23:23:52,493 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 23:23:52,562 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 23:23:52,579 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@1f117d53, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@40840fec [2022-07-22 23:23:52,580 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-22 23:23:52,586 INFO L276 IsEmpty]: Start isEmpty. Operand has 499 states, 395 states have (on average 1.4329113924050634) internal successors, (566), 404 states have internal predecessors, (566), 78 states have call successors, (78), 24 states have call predecessors, (78), 24 states have return successors, (78), 78 states have call predecessors, (78), 78 states have call successors, (78) [2022-07-22 23:23:52,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-07-22 23:23:52,596 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:23:52,596 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:23:52,597 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:23:52,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:23:52,602 INFO L85 PathProgramCache]: Analyzing trace with hash -1860140379, now seen corresponding path program 1 times [2022-07-22 23:23:52,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:23:52,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740855188] [2022-07-22 23:23:52,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:23:52,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:23:53,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:23:53,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 23:23:53,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:23:53,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 23:23:53,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:23:53,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740855188] [2022-07-22 23:23:53,849 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740855188] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:23:53,849 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:23:53,849 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 23:23:53,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339741990] [2022-07-22 23:23:53,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:23:53,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 23:23:53,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:23:53,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 23:23:53,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 23:23:53,893 INFO L87 Difference]: Start difference. First operand has 499 states, 395 states have (on average 1.4329113924050634) internal successors, (566), 404 states have internal predecessors, (566), 78 states have call successors, (78), 24 states have call predecessors, (78), 24 states have return successors, (78), 78 states have call predecessors, (78), 78 states have call successors, (78) Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-22 23:23:54,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:23:54,420 INFO L93 Difference]: Finished difference Result 1407 states and 2087 transitions. [2022-07-22 23:23:54,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 23:23:54,425 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2022-07-22 23:23:54,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:23:54,449 INFO L225 Difference]: With dead ends: 1407 [2022-07-22 23:23:54,449 INFO L226 Difference]: Without dead ends: 907 [2022-07-22 23:23:54,456 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 23:23:54,460 INFO L413 NwaCegarLoop]: 1029 mSDtfsCounter, 682 mSDsluCounter, 613 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 682 SdHoareTripleChecker+Valid, 1642 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-22 23:23:54,461 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [682 Valid, 1642 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-22 23:23:54,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 907 states. [2022-07-22 23:23:54,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 907 to 903. [2022-07-22 23:23:54,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 903 states, 714 states have (on average 1.4341736694677871) internal successors, (1024), 724 states have internal predecessors, (1024), 143 states have call successors, (143), 46 states have call predecessors, (143), 45 states have return successors, (138), 138 states have call predecessors, (138), 138 states have call successors, (138) [2022-07-22 23:23:54,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 903 states to 903 states and 1305 transitions. [2022-07-22 23:23:54,591 INFO L78 Accepts]: Start accepts. Automaton has 903 states and 1305 transitions. Word has length 21 [2022-07-22 23:23:54,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:23:54,591 INFO L495 AbstractCegarLoop]: Abstraction has 903 states and 1305 transitions. [2022-07-22 23:23:54,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-22 23:23:54,592 INFO L276 IsEmpty]: Start isEmpty. Operand 903 states and 1305 transitions. [2022-07-22 23:23:54,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-07-22 23:23:54,595 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:23:54,595 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:23:54,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 23:23:54,595 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:23:54,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:23:54,596 INFO L85 PathProgramCache]: Analyzing trace with hash -1341252181, now seen corresponding path program 1 times [2022-07-22 23:23:54,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:23:54,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70424288] [2022-07-22 23:23:54,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:23:54,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:23:55,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:23:55,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 23:23:55,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:23:55,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:23:55,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:23:55,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 23:23:55,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:23:55,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70424288] [2022-07-22 23:23:55,393 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70424288] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:23:55,393 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:23:55,393 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 23:23:55,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530188373] [2022-07-22 23:23:55,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:23:55,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 23:23:55,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:23:55,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 23:23:55,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 23:23:55,397 INFO L87 Difference]: Start difference. First operand 903 states and 1305 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-22 23:23:57,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:23:57,023 INFO L93 Difference]: Finished difference Result 2674 states and 3857 transitions. [2022-07-22 23:23:57,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 23:23:57,024 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 28 [2022-07-22 23:23:57,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:23:57,038 INFO L225 Difference]: With dead ends: 2674 [2022-07-22 23:23:57,038 INFO L226 Difference]: Without dead ends: 1774 [2022-07-22 23:23:57,042 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 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 23:23:57,044 INFO L413 NwaCegarLoop]: 936 mSDtfsCounter, 731 mSDsluCounter, 836 mSDsCounter, 0 mSdLazyCounter, 501 mSolverCounterSat, 232 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 800 SdHoareTripleChecker+Valid, 1772 SdHoareTripleChecker+Invalid, 733 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 232 IncrementalHoareTripleChecker+Valid, 501 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-22 23:23:57,044 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [800 Valid, 1772 Invalid, 733 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [232 Valid, 501 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-22 23:23:57,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1774 states. [2022-07-22 23:23:57,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1774 to 1577. [2022-07-22 23:23:57,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1577 states, 1235 states have (on average 1.4008097165991902) internal successors, (1730), 1251 states have internal predecessors, (1730), 256 states have call successors, (256), 86 states have call predecessors, (256), 85 states have return successors, (251), 251 states have call predecessors, (251), 251 states have call successors, (251) [2022-07-22 23:23:57,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1577 states to 1577 states and 2237 transitions. [2022-07-22 23:23:57,138 INFO L78 Accepts]: Start accepts. Automaton has 1577 states and 2237 transitions. Word has length 28 [2022-07-22 23:23:57,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:23:57,139 INFO L495 AbstractCegarLoop]: Abstraction has 1577 states and 2237 transitions. [2022-07-22 23:23:57,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-22 23:23:57,141 INFO L276 IsEmpty]: Start isEmpty. Operand 1577 states and 2237 transitions. [2022-07-22 23:23:57,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-07-22 23:23:57,147 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:23:57,147 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:23:57,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 23:23:57,148 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:23:57,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:23:57,148 INFO L85 PathProgramCache]: Analyzing trace with hash 1231327051, now seen corresponding path program 1 times [2022-07-22 23:23:57,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:23:57,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219924261] [2022-07-22 23:23:57,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:23:57,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:23:57,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:23:57,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 23:23:57,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:23:57,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:23:57,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:23:57,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 23:23:57,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:23:57,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219924261] [2022-07-22 23:23:57,844 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219924261] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:23:57,844 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:23:57,844 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 23:23:57,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276562446] [2022-07-22 23:23:57,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:23:57,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 23:23:57,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:23:57,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 23:23:57,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 23:23:57,846 INFO L87 Difference]: Start difference. First operand 1577 states and 2237 transitions. Second operand has 7 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-22 23:24:00,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:24:00,472 INFO L93 Difference]: Finished difference Result 5284 states and 7954 transitions. [2022-07-22 23:24:00,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 23:24:00,473 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 33 [2022-07-22 23:24:00,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:24:00,501 INFO L225 Difference]: With dead ends: 5284 [2022-07-22 23:24:00,501 INFO L226 Difference]: Without dead ends: 3710 [2022-07-22 23:24:00,513 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2022-07-22 23:24:00,520 INFO L413 NwaCegarLoop]: 1428 mSDtfsCounter, 1648 mSDsluCounter, 4711 mSDsCounter, 0 mSdLazyCounter, 1414 mSolverCounterSat, 284 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1719 SdHoareTripleChecker+Valid, 6139 SdHoareTripleChecker+Invalid, 1698 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 284 IncrementalHoareTripleChecker+Valid, 1414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-22 23:24:00,521 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1719 Valid, 6139 Invalid, 1698 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [284 Valid, 1414 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-07-22 23:24:00,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3710 states. [2022-07-22 23:24:00,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3710 to 1599. [2022-07-22 23:24:00,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1599 states, 1253 states have (on average 1.3998403830806065) internal successors, (1754), 1269 states have internal predecessors, (1754), 260 states have call successors, (260), 86 states have call predecessors, (260), 85 states have return successors, (255), 255 states have call predecessors, (255), 255 states have call successors, (255) [2022-07-22 23:24:00,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1599 states to 1599 states and 2269 transitions. [2022-07-22 23:24:00,664 INFO L78 Accepts]: Start accepts. Automaton has 1599 states and 2269 transitions. Word has length 33 [2022-07-22 23:24:00,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:24:00,665 INFO L495 AbstractCegarLoop]: Abstraction has 1599 states and 2269 transitions. [2022-07-22 23:24:00,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-22 23:24:00,665 INFO L276 IsEmpty]: Start isEmpty. Operand 1599 states and 2269 transitions. [2022-07-22 23:24:00,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-07-22 23:24:00,668 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:24:00,668 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:24:00,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-22 23:24:00,668 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:24:00,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:24:00,669 INFO L85 PathProgramCache]: Analyzing trace with hash -574111283, now seen corresponding path program 1 times [2022-07-22 23:24:00,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:24:00,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347075904] [2022-07-22 23:24:00,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:24:00,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:24:01,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:01,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 23:24:01,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:01,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:24:01,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:01,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 23:24:01,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:24:01,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347075904] [2022-07-22 23:24:01,383 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347075904] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:24:01,383 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:24:01,383 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 23:24:01,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377715591] [2022-07-22 23:24:01,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:24:01,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 23:24:01,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:24:01,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 23:24:01,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 23:24:01,389 INFO L87 Difference]: Start difference. First operand 1599 states and 2269 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-22 23:24:02,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:24:02,161 INFO L93 Difference]: Finished difference Result 1779 states and 2570 transitions. [2022-07-22 23:24:02,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 23:24:02,162 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 33 [2022-07-22 23:24:02,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:24:02,174 INFO L225 Difference]: With dead ends: 1779 [2022-07-22 23:24:02,175 INFO L226 Difference]: Without dead ends: 1776 [2022-07-22 23:24:02,177 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 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 23:24:02,178 INFO L413 NwaCegarLoop]: 718 mSDtfsCounter, 818 mSDsluCounter, 383 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 204 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 857 SdHoareTripleChecker+Valid, 1101 SdHoareTripleChecker+Invalid, 311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 204 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-22 23:24:02,178 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [857 Valid, 1101 Invalid, 311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [204 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-22 23:24:02,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1776 states. [2022-07-22 23:24:02,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1776 to 1598. [2022-07-22 23:24:02,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1598 states, 1253 states have (on average 1.3990422984836393) internal successors, (1753), 1268 states have internal predecessors, (1753), 259 states have call successors, (259), 86 states have call predecessors, (259), 85 states have return successors, (255), 255 states have call predecessors, (255), 255 states have call successors, (255) [2022-07-22 23:24:02,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1598 states to 1598 states and 2267 transitions. [2022-07-22 23:24:02,253 INFO L78 Accepts]: Start accepts. Automaton has 1598 states and 2267 transitions. Word has length 33 [2022-07-22 23:24:02,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:24:02,254 INFO L495 AbstractCegarLoop]: Abstraction has 1598 states and 2267 transitions. [2022-07-22 23:24:02,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-22 23:24:02,255 INFO L276 IsEmpty]: Start isEmpty. Operand 1598 states and 2267 transitions. [2022-07-22 23:24:02,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-07-22 23:24:02,255 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:24:02,256 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:24:02,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-22 23:24:02,256 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:24:02,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:24:02,257 INFO L85 PathProgramCache]: Analyzing trace with hash -617764655, now seen corresponding path program 1 times [2022-07-22 23:24:02,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:24:02,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868199516] [2022-07-22 23:24:02,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:24:02,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:24:02,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:02,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 23:24:02,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:02,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:24:02,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:02,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 23:24:02,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:24:02,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868199516] [2022-07-22 23:24:02,892 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868199516] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:24:02,892 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:24:02,892 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 23:24:02,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42746600] [2022-07-22 23:24:02,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:24:02,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 23:24:02,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:24:02,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 23:24:02,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 23:24:02,895 INFO L87 Difference]: Start difference. First operand 1598 states and 2267 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-22 23:24:03,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:24:03,647 INFO L93 Difference]: Finished difference Result 1778 states and 2568 transitions. [2022-07-22 23:24:03,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 23:24:03,648 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 34 [2022-07-22 23:24:03,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:24:03,658 INFO L225 Difference]: With dead ends: 1778 [2022-07-22 23:24:03,659 INFO L226 Difference]: Without dead ends: 1775 [2022-07-22 23:24:03,660 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 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 23:24:03,661 INFO L413 NwaCegarLoop]: 716 mSDtfsCounter, 815 mSDsluCounter, 382 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 203 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 854 SdHoareTripleChecker+Valid, 1098 SdHoareTripleChecker+Invalid, 310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 203 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-22 23:24:03,661 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [854 Valid, 1098 Invalid, 310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [203 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-22 23:24:03,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1775 states. [2022-07-22 23:24:03,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1775 to 1597. [2022-07-22 23:24:03,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1597 states, 1253 states have (on average 1.398244213886672) internal successors, (1752), 1267 states have internal predecessors, (1752), 258 states have call successors, (258), 86 states have call predecessors, (258), 85 states have return successors, (255), 255 states have call predecessors, (255), 255 states have call successors, (255) [2022-07-22 23:24:03,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1597 states to 1597 states and 2265 transitions. [2022-07-22 23:24:03,742 INFO L78 Accepts]: Start accepts. Automaton has 1597 states and 2265 transitions. Word has length 34 [2022-07-22 23:24:03,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:24:03,743 INFO L495 AbstractCegarLoop]: Abstraction has 1597 states and 2265 transitions. [2022-07-22 23:24:03,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-22 23:24:03,743 INFO L276 IsEmpty]: Start isEmpty. Operand 1597 states and 2265 transitions. [2022-07-22 23:24:03,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-07-22 23:24:03,744 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:24:03,744 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:24:03,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-22 23:24:03,745 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:24:03,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:24:03,745 INFO L85 PathProgramCache]: Analyzing trace with hash -1971014320, now seen corresponding path program 1 times [2022-07-22 23:24:03,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:24:03,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324155274] [2022-07-22 23:24:03,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:24:03,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:24:04,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:04,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 23:24:04,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:04,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:24:04,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:04,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 23:24:04,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:24:04,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324155274] [2022-07-22 23:24:04,325 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324155274] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:24:04,325 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:24:04,325 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 23:24:04,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685883518] [2022-07-22 23:24:04,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:24:04,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 23:24:04,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:24:04,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 23:24:04,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 23:24:04,327 INFO L87 Difference]: Start difference. First operand 1597 states and 2265 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-22 23:24:05,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:24:05,696 INFO L93 Difference]: Finished difference Result 4611 states and 6639 transitions. [2022-07-22 23:24:05,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 23:24:05,697 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 35 [2022-07-22 23:24:05,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:24:05,715 INFO L225 Difference]: With dead ends: 4611 [2022-07-22 23:24:05,716 INFO L226 Difference]: Without dead ends: 3005 [2022-07-22 23:24:05,725 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 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 23:24:05,726 INFO L413 NwaCegarLoop]: 740 mSDtfsCounter, 896 mSDsluCounter, 811 mSDsCounter, 0 mSdLazyCounter, 414 mSolverCounterSat, 255 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 955 SdHoareTripleChecker+Valid, 1551 SdHoareTripleChecker+Invalid, 669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 255 IncrementalHoareTripleChecker+Valid, 414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-22 23:24:05,726 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [955 Valid, 1551 Invalid, 669 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [255 Valid, 414 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-22 23:24:05,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3005 states. [2022-07-22 23:24:05,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3005 to 2778. [2022-07-22 23:24:05,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2778 states, 2185 states have (on average 1.3977116704805492) internal successors, (3054), 2222 states have internal predecessors, (3054), 455 states have call successors, (455), 151 states have call predecessors, (455), 137 states have return successors, (445), 428 states have call predecessors, (445), 445 states have call successors, (445) [2022-07-22 23:24:05,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2778 states to 2778 states and 3954 transitions. [2022-07-22 23:24:05,857 INFO L78 Accepts]: Start accepts. Automaton has 2778 states and 3954 transitions. Word has length 35 [2022-07-22 23:24:05,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:24:05,859 INFO L495 AbstractCegarLoop]: Abstraction has 2778 states and 3954 transitions. [2022-07-22 23:24:05,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-22 23:24:05,859 INFO L276 IsEmpty]: Start isEmpty. Operand 2778 states and 3954 transitions. [2022-07-22 23:24:05,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-07-22 23:24:05,861 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:24:05,861 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-22 23:24:05,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-22 23:24:05,862 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:24:05,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:24:05,866 INFO L85 PathProgramCache]: Analyzing trace with hash -2101219672, now seen corresponding path program 1 times [2022-07-22 23:24:05,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:24:05,866 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905701433] [2022-07-22 23:24:05,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:24:05,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:24:06,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:06,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 23:24:06,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:06,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:24:06,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:06,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 23:24:06,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:06,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:24:06,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:06,580 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-22 23:24:06,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:24:06,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905701433] [2022-07-22 23:24:06,581 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905701433] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:24:06,581 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:24:06,581 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 23:24:06,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106833660] [2022-07-22 23:24:06,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:24:06,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 23:24:06,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:24:06,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 23:24:06,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 23:24:06,583 INFO L87 Difference]: Start difference. First operand 2778 states and 3954 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-22 23:24:08,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:24:08,120 INFO L93 Difference]: Finished difference Result 7242 states and 10447 transitions. [2022-07-22 23:24:08,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 23:24:08,121 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 55 [2022-07-22 23:24:08,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:24:08,150 INFO L225 Difference]: With dead ends: 7242 [2022-07-22 23:24:08,151 INFO L226 Difference]: Without dead ends: 4467 [2022-07-22 23:24:08,165 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 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 23:24:08,168 INFO L413 NwaCegarLoop]: 977 mSDtfsCounter, 846 mSDsluCounter, 941 mSDsCounter, 0 mSdLazyCounter, 549 mSolverCounterSat, 251 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 916 SdHoareTripleChecker+Valid, 1918 SdHoareTripleChecker+Invalid, 800 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 251 IncrementalHoareTripleChecker+Valid, 549 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-22 23:24:08,169 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [916 Valid, 1918 Invalid, 800 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [251 Valid, 549 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-22 23:24:08,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4467 states. [2022-07-22 23:24:08,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4467 to 4138. [2022-07-22 23:24:08,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4138 states, 3275 states have (on average 1.3880916030534352) internal successors, (4546), 3324 states have internal predecessors, (4546), 659 states have call successors, (659), 221 states have call predecessors, (659), 203 states have return successors, (649), 628 states have call predecessors, (649), 649 states have call successors, (649) [2022-07-22 23:24:08,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4138 states to 4138 states and 5854 transitions. [2022-07-22 23:24:08,364 INFO L78 Accepts]: Start accepts. Automaton has 4138 states and 5854 transitions. Word has length 55 [2022-07-22 23:24:08,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:24:08,366 INFO L495 AbstractCegarLoop]: Abstraction has 4138 states and 5854 transitions. [2022-07-22 23:24:08,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-22 23:24:08,366 INFO L276 IsEmpty]: Start isEmpty. Operand 4138 states and 5854 transitions. [2022-07-22 23:24:08,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-07-22 23:24:08,374 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:24:08,374 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2022-07-22 23:24:08,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-22 23:24:08,375 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:24:08,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:24:08,375 INFO L85 PathProgramCache]: Analyzing trace with hash 196374771, now seen corresponding path program 1 times [2022-07-22 23:24:08,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:24:08,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471892829] [2022-07-22 23:24:08,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:24:08,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:24:08,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:08,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 23:24:09,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:09,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:24:09,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:09,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-22 23:24:09,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:09,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:24:09,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:09,020 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-07-22 23:24:09,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:24:09,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471892829] [2022-07-22 23:24:09,021 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471892829] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:24:09,021 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:24:09,021 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 23:24:09,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375364145] [2022-07-22 23:24:09,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:24:09,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 23:24:09,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:24:09,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 23:24:09,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 23:24:09,024 INFO L87 Difference]: Start difference. First operand 4138 states and 5854 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-22 23:24:10,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:24:10,468 INFO L93 Difference]: Finished difference Result 10056 states and 14407 transitions. [2022-07-22 23:24:10,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 23:24:10,469 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 75 [2022-07-22 23:24:10,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:24:10,507 INFO L225 Difference]: With dead ends: 10056 [2022-07-22 23:24:10,508 INFO L226 Difference]: Without dead ends: 5921 [2022-07-22 23:24:10,528 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 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 23:24:10,529 INFO L413 NwaCegarLoop]: 1267 mSDtfsCounter, 763 mSDsluCounter, 1073 mSDsCounter, 0 mSdLazyCounter, 546 mSolverCounterSat, 225 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 836 SdHoareTripleChecker+Valid, 2340 SdHoareTripleChecker+Invalid, 771 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 225 IncrementalHoareTripleChecker+Valid, 546 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-22 23:24:10,530 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [836 Valid, 2340 Invalid, 771 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [225 Valid, 546 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-22 23:24:10,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5921 states. [2022-07-22 23:24:10,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5921 to 5498. [2022-07-22 23:24:10,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5498 states, 4365 states have (on average 1.3832760595647193) internal successors, (6038), 4426 states have internal predecessors, (6038), 863 states have call successors, (863), 291 states have call predecessors, (863), 269 states have return successors, (853), 828 states have call predecessors, (853), 853 states have call successors, (853) [2022-07-22 23:24:10,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5498 states to 5498 states and 7754 transitions. [2022-07-22 23:24:10,797 INFO L78 Accepts]: Start accepts. Automaton has 5498 states and 7754 transitions. Word has length 75 [2022-07-22 23:24:10,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:24:10,800 INFO L495 AbstractCegarLoop]: Abstraction has 5498 states and 7754 transitions. [2022-07-22 23:24:10,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-22 23:24:10,801 INFO L276 IsEmpty]: Start isEmpty. Operand 5498 states and 7754 transitions. [2022-07-22 23:24:10,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-07-22 23:24:10,806 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:24:10,806 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:24:10,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-22 23:24:10,806 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:24:10,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:24:10,807 INFO L85 PathProgramCache]: Analyzing trace with hash -1785936298, now seen corresponding path program 1 times [2022-07-22 23:24:10,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:24:10,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000920730] [2022-07-22 23:24:10,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:24:10,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:24:11,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:11,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 23:24:11,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:11,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-22 23:24:11,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:11,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-22 23:24:11,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:11,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-22 23:24:11,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:11,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:24:11,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:11,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:24:11,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:11,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:24:11,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:11,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-22 23:24:11,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:11,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:24:11,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:11,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-22 23:24:11,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:11,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-22 23:24:11,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:11,468 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-22 23:24:11,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:24:11,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000920730] [2022-07-22 23:24:11,469 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000920730] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:24:11,469 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:24:11,469 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 23:24:11,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141586379] [2022-07-22 23:24:11,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:24:11,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 23:24:11,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:24:11,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 23:24:11,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 23:24:11,472 INFO L87 Difference]: Start difference. First operand 5498 states and 7754 transitions. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-22 23:24:14,747 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:24:15,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:24:15,322 INFO L93 Difference]: Finished difference Result 13582 states and 19486 transitions. [2022-07-22 23:24:15,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-22 23:24:15,322 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 92 [2022-07-22 23:24:15,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:24:15,364 INFO L225 Difference]: With dead ends: 13582 [2022-07-22 23:24:15,365 INFO L226 Difference]: Without dead ends: 8087 [2022-07-22 23:24:15,387 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2022-07-22 23:24:15,388 INFO L413 NwaCegarLoop]: 705 mSDtfsCounter, 1066 mSDsluCounter, 1583 mSDsCounter, 0 mSdLazyCounter, 728 mSolverCounterSat, 551 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1102 SdHoareTripleChecker+Valid, 2288 SdHoareTripleChecker+Invalid, 1280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 551 IncrementalHoareTripleChecker+Valid, 728 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-07-22 23:24:15,389 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1102 Valid, 2288 Invalid, 1280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [551 Valid, 728 Invalid, 1 Unknown, 0 Unchecked, 3.5s Time] [2022-07-22 23:24:15,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8087 states. [2022-07-22 23:24:15,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8087 to 7208. [2022-07-22 23:24:15,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7208 states, 5881 states have (on average 1.4057133140622342) internal successors, (8267), 5952 states have internal predecessors, (8267), 989 states have call successors, (989), 365 states have call predecessors, (989), 337 states have return successors, (973), 938 states have call predecessors, (973), 973 states have call successors, (973) [2022-07-22 23:24:15,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7208 states to 7208 states and 10229 transitions. [2022-07-22 23:24:15,724 INFO L78 Accepts]: Start accepts. Automaton has 7208 states and 10229 transitions. Word has length 92 [2022-07-22 23:24:15,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:24:15,724 INFO L495 AbstractCegarLoop]: Abstraction has 7208 states and 10229 transitions. [2022-07-22 23:24:15,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-22 23:24:15,725 INFO L276 IsEmpty]: Start isEmpty. Operand 7208 states and 10229 transitions. [2022-07-22 23:24:15,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-07-22 23:24:15,731 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:24:15,731 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:24:15,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-22 23:24:15,732 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:24:15,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:24:15,733 INFO L85 PathProgramCache]: Analyzing trace with hash 2081938916, now seen corresponding path program 1 times [2022-07-22 23:24:15,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:24:15,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332340497] [2022-07-22 23:24:15,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:24:15,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:24:16,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:16,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 23:24:16,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:16,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:24:16,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:16,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-22 23:24:16,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:16,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:24:16,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:16,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:24:16,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:16,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 23:24:16,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:16,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 23:24:16,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:16,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-22 23:24:16,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:16,364 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-22 23:24:16,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:24:16,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332340497] [2022-07-22 23:24:16,364 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332340497] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 23:24:16,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [544878915] [2022-07-22 23:24:16,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:24:16,365 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 23:24:16,365 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 23:24:16,371 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 23:24:16,378 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 23:24:18,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:18,126 INFO L263 TraceCheckSpWp]: Trace formula consists of 12129 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-22 23:24:18,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 23:24:18,289 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-07-22 23:24:18,290 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 23:24:18,290 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [544878915] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:24:18,290 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 23:24:18,290 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2022-07-22 23:24:18,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761123058] [2022-07-22 23:24:18,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:24:18,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 23:24:18,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:24:18,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 23:24:18,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2022-07-22 23:24:18,292 INFO L87 Difference]: Start difference. First operand 7208 states and 10229 transitions. Second operand has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-22 23:24:19,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:24:19,447 INFO L93 Difference]: Finished difference Result 18050 states and 26050 transitions. [2022-07-22 23:24:19,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 23:24:19,448 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 107 [2022-07-22 23:24:19,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:24:19,486 INFO L225 Difference]: With dead ends: 18050 [2022-07-22 23:24:19,486 INFO L226 Difference]: Without dead ends: 10805 [2022-07-22 23:24:19,519 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2022-07-22 23:24:19,520 INFO L413 NwaCegarLoop]: 975 mSDtfsCounter, 717 mSDsluCounter, 5279 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 717 SdHoareTripleChecker+Valid, 6254 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-22 23:24:19,520 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [717 Valid, 6254 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-22 23:24:19,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10805 states. [2022-07-22 23:24:19,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10805 to 7213. [2022-07-22 23:24:19,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7213 states, 5886 states have (on average 1.401291199456337) internal successors, (8248), 5957 states have internal predecessors, (8248), 989 states have call successors, (989), 365 states have call predecessors, (989), 337 states have return successors, (973), 938 states have call predecessors, (973), 973 states have call successors, (973) [2022-07-22 23:24:19,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7213 states to 7213 states and 10210 transitions. [2022-07-22 23:24:19,975 INFO L78 Accepts]: Start accepts. Automaton has 7213 states and 10210 transitions. Word has length 107 [2022-07-22 23:24:19,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:24:19,975 INFO L495 AbstractCegarLoop]: Abstraction has 7213 states and 10210 transitions. [2022-07-22 23:24:19,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-22 23:24:19,976 INFO L276 IsEmpty]: Start isEmpty. Operand 7213 states and 10210 transitions. [2022-07-22 23:24:19,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-07-22 23:24:19,982 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:24:19,982 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:24:20,032 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-22 23:24:20,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-07-22 23:24:20,196 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:24:20,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:24:20,196 INFO L85 PathProgramCache]: Analyzing trace with hash 1609003934, now seen corresponding path program 1 times [2022-07-22 23:24:20,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:24:20,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930251337] [2022-07-22 23:24:20,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:24:20,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:24:20,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:20,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 23:24:20,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:20,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:24:20,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:20,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 23:24:20,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:20,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:24:20,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:20,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-22 23:24:20,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:20,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:24:20,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:20,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:24:20,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:20,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 23:24:20,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:20,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 23:24:20,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:20,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-22 23:24:20,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:20,834 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-07-22 23:24:20,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:24:20,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930251337] [2022-07-22 23:24:20,835 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930251337] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:24:20,835 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:24:20,835 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 23:24:20,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692394302] [2022-07-22 23:24:20,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:24:20,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 23:24:20,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:24:20,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 23:24:20,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-22 23:24:20,838 INFO L87 Difference]: Start difference. First operand 7213 states and 10210 transitions. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-07-22 23:24:23,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:24:23,281 INFO L93 Difference]: Finished difference Result 23671 states and 35308 transitions. [2022-07-22 23:24:23,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-22 23:24:23,282 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 133 [2022-07-22 23:24:23,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:24:23,346 INFO L225 Difference]: With dead ends: 23671 [2022-07-22 23:24:23,346 INFO L226 Difference]: Without dead ends: 16461 [2022-07-22 23:24:23,372 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-22 23:24:23,374 INFO L413 NwaCegarLoop]: 1089 mSDtfsCounter, 1418 mSDsluCounter, 2666 mSDsCounter, 0 mSdLazyCounter, 924 mSolverCounterSat, 459 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1522 SdHoareTripleChecker+Valid, 3755 SdHoareTripleChecker+Invalid, 1383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 459 IncrementalHoareTripleChecker+Valid, 924 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-22 23:24:23,374 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1522 Valid, 3755 Invalid, 1383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [459 Valid, 924 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-07-22 23:24:23,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16461 states. [2022-07-22 23:24:23,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16461 to 7189. [2022-07-22 23:24:23,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7189 states, 5862 states have (on average 1.3974752644148756) internal successors, (8192), 5933 states have internal predecessors, (8192), 989 states have call successors, (989), 365 states have call predecessors, (989), 337 states have return successors, (973), 938 states have call predecessors, (973), 973 states have call successors, (973) [2022-07-22 23:24:23,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7189 states to 7189 states and 10154 transitions. [2022-07-22 23:24:23,796 INFO L78 Accepts]: Start accepts. Automaton has 7189 states and 10154 transitions. Word has length 133 [2022-07-22 23:24:23,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:24:23,797 INFO L495 AbstractCegarLoop]: Abstraction has 7189 states and 10154 transitions. [2022-07-22 23:24:23,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-07-22 23:24:23,798 INFO L276 IsEmpty]: Start isEmpty. Operand 7189 states and 10154 transitions. [2022-07-22 23:24:23,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-07-22 23:24:23,806 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:24:23,806 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:24:23,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-22 23:24:23,807 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:24:23,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:24:23,807 INFO L85 PathProgramCache]: Analyzing trace with hash -1603001176, now seen corresponding path program 1 times [2022-07-22 23:24:23,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:24:23,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361665655] [2022-07-22 23:24:23,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:24:23,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:24:24,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:24,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 23:24:24,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:24,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:24:24,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:24,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-22 23:24:24,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:24,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:24:24,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:24,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 23:24:24,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:24,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:24:24,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:24,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-22 23:24:24,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:24,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:24:24,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:24,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:24:24,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:24,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 23:24:24,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:24,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 23:24:24,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:24,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-22 23:24:24,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:24,486 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-07-22 23:24:24,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:24:24,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361665655] [2022-07-22 23:24:24,487 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361665655] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:24:24,487 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:24:24,487 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 23:24:24,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752537474] [2022-07-22 23:24:24,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:24:24,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 23:24:24,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:24:24,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 23:24:24,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-22 23:24:24,489 INFO L87 Difference]: Start difference. First operand 7189 states and 10154 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-22 23:24:27,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:24:27,165 INFO L93 Difference]: Finished difference Result 24324 states and 36225 transitions. [2022-07-22 23:24:27,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-22 23:24:27,166 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 135 [2022-07-22 23:24:27,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:24:27,229 INFO L225 Difference]: With dead ends: 24324 [2022-07-22 23:24:27,229 INFO L226 Difference]: Without dead ends: 17138 [2022-07-22 23:24:27,253 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-22 23:24:27,254 INFO L413 NwaCegarLoop]: 1718 mSDtfsCounter, 832 mSDsluCounter, 5421 mSDsCounter, 0 mSdLazyCounter, 1139 mSolverCounterSat, 168 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 939 SdHoareTripleChecker+Valid, 7139 SdHoareTripleChecker+Invalid, 1307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 168 IncrementalHoareTripleChecker+Valid, 1139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-07-22 23:24:27,254 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [939 Valid, 7139 Invalid, 1307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [168 Valid, 1139 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-07-22 23:24:27,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17138 states. [2022-07-22 23:24:27,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17138 to 7205. [2022-07-22 23:24:27,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7205 states, 5878 states have (on average 1.396393331064988) internal successors, (8208), 5949 states have internal predecessors, (8208), 989 states have call successors, (989), 365 states have call predecessors, (989), 337 states have return successors, (973), 938 states have call predecessors, (973), 973 states have call successors, (973) [2022-07-22 23:24:27,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7205 states to 7205 states and 10170 transitions. [2022-07-22 23:24:27,744 INFO L78 Accepts]: Start accepts. Automaton has 7205 states and 10170 transitions. Word has length 135 [2022-07-22 23:24:27,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:24:27,745 INFO L495 AbstractCegarLoop]: Abstraction has 7205 states and 10170 transitions. [2022-07-22 23:24:27,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-22 23:24:27,745 INFO L276 IsEmpty]: Start isEmpty. Operand 7205 states and 10170 transitions. [2022-07-22 23:24:27,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-07-22 23:24:27,751 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:24:27,751 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:24:27,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-22 23:24:27,752 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:24:27,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:24:27,752 INFO L85 PathProgramCache]: Analyzing trace with hash -724750873, now seen corresponding path program 1 times [2022-07-22 23:24:27,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:24:27,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315537648] [2022-07-22 23:24:27,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:24:27,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:24:28,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:28,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 23:24:28,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:28,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:24:28,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:28,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 23:24:28,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:28,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:24:28,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:28,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-22 23:24:28,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:28,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:24:28,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:28,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:24:28,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:28,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 23:24:28,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:28,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 23:24:28,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:28,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-07-22 23:24:28,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:28,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:24:28,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:28,336 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2022-07-22 23:24:28,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:24:28,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315537648] [2022-07-22 23:24:28,337 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315537648] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:24:28,337 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:24:28,337 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 23:24:28,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752583180] [2022-07-22 23:24:28,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:24:28,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 23:24:28,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:24:28,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 23:24:28,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-22 23:24:28,339 INFO L87 Difference]: Start difference. First operand 7205 states and 10170 transitions. Second operand has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-07-22 23:24:30,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:24:30,272 INFO L93 Difference]: Finished difference Result 16785 states and 23996 transitions. [2022-07-22 23:24:30,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 23:24:30,272 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 151 [2022-07-22 23:24:30,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:24:30,309 INFO L225 Difference]: With dead ends: 16785 [2022-07-22 23:24:30,309 INFO L226 Difference]: Without dead ends: 9583 [2022-07-22 23:24:30,331 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-22 23:24:30,332 INFO L413 NwaCegarLoop]: 1289 mSDtfsCounter, 881 mSDsluCounter, 1838 mSDsCounter, 0 mSdLazyCounter, 755 mSolverCounterSat, 369 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 954 SdHoareTripleChecker+Valid, 3127 SdHoareTripleChecker+Invalid, 1124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 369 IncrementalHoareTripleChecker+Valid, 755 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-22 23:24:30,332 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [954 Valid, 3127 Invalid, 1124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [369 Valid, 755 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-22 23:24:30,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9583 states. [2022-07-22 23:24:30,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9583 to 8951. [2022-07-22 23:24:30,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8951 states, 7326 states have (on average 1.3928473928473928) internal successors, (10204), 7409 states have internal predecessors, (10204), 1211 states have call successors, (1211), 445 states have call predecessors, (1211), 413 states have return successors, (1195), 1156 states have call predecessors, (1195), 1195 states have call successors, (1195) [2022-07-22 23:24:30,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8951 states to 8951 states and 12610 transitions. [2022-07-22 23:24:30,760 INFO L78 Accepts]: Start accepts. Automaton has 8951 states and 12610 transitions. Word has length 151 [2022-07-22 23:24:30,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:24:30,761 INFO L495 AbstractCegarLoop]: Abstraction has 8951 states and 12610 transitions. [2022-07-22 23:24:30,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-07-22 23:24:30,761 INFO L276 IsEmpty]: Start isEmpty. Operand 8951 states and 12610 transitions. [2022-07-22 23:24:30,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-07-22 23:24:30,770 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:24:30,770 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:24:30,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-22 23:24:30,771 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:24:30,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:24:30,771 INFO L85 PathProgramCache]: Analyzing trace with hash -1057076682, now seen corresponding path program 1 times [2022-07-22 23:24:30,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:24:30,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112581302] [2022-07-22 23:24:30,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:24:30,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:24:31,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:31,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 23:24:31,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:31,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:24:31,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:31,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-22 23:24:31,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:31,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:24:31,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:31,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 23:24:31,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:31,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:24:31,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:31,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-22 23:24:31,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:31,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:24:31,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:31,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:24:31,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:31,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 23:24:31,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:31,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 23:24:31,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:31,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-07-22 23:24:31,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:31,519 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-07-22 23:24:31,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:24:31,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112581302] [2022-07-22 23:24:31,519 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112581302] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 23:24:31,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [280401759] [2022-07-22 23:24:31,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:24:31,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 23:24:31,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 23:24:31,524 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 23:24:31,534 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-22 23:24:33,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:33,197 INFO L263 TraceCheckSpWp]: Trace formula consists of 12254 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-22 23:24:33,225 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 23:24:33,380 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-22 23:24:33,381 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 23:24:33,381 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [280401759] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:24:33,381 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 23:24:33,381 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 8 [2022-07-22 23:24:33,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874265246] [2022-07-22 23:24:33,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:24:33,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 23:24:33,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:24:33,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 23:24:33,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-22 23:24:33,383 INFO L87 Difference]: Start difference. First operand 8951 states and 12610 transitions. Second operand has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-22 23:24:34,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:24:34,689 INFO L93 Difference]: Finished difference Result 26846 states and 37822 transitions. [2022-07-22 23:24:34,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 23:24:34,690 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 142 [2022-07-22 23:24:34,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:24:34,797 INFO L225 Difference]: With dead ends: 26846 [2022-07-22 23:24:34,798 INFO L226 Difference]: Without dead ends: 26831 [2022-07-22 23:24:34,819 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-22 23:24:34,821 INFO L413 NwaCegarLoop]: 1343 mSDtfsCounter, 1387 mSDsluCounter, 1240 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1387 SdHoareTripleChecker+Valid, 2583 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-22 23:24:34,821 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1387 Valid, 2583 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-22 23:24:34,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26831 states. [2022-07-22 23:24:35,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26831 to 26703. [2022-07-22 23:24:36,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26703 states, 21860 states have (on average 1.3944190301921318) internal successors, (30482), 22101 states have internal predecessors, (30482), 3611 states have call successors, (3611), 1321 states have call predecessors, (3611), 1231 states have return successors, (3577), 3460 states have call predecessors, (3577), 3577 states have call successors, (3577) [2022-07-22 23:24:36,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26703 states to 26703 states and 37670 transitions. [2022-07-22 23:24:36,128 INFO L78 Accepts]: Start accepts. Automaton has 26703 states and 37670 transitions. Word has length 142 [2022-07-22 23:24:36,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:24:36,129 INFO L495 AbstractCegarLoop]: Abstraction has 26703 states and 37670 transitions. [2022-07-22 23:24:36,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-22 23:24:36,129 INFO L276 IsEmpty]: Start isEmpty. Operand 26703 states and 37670 transitions. [2022-07-22 23:24:36,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-22 23:24:36,142 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:24:36,142 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:24:36,202 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-22 23:24:36,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-07-22 23:24:36,367 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:24:36,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:24:36,368 INFO L85 PathProgramCache]: Analyzing trace with hash 524127038, now seen corresponding path program 1 times [2022-07-22 23:24:36,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:24:36,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457534187] [2022-07-22 23:24:36,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:24:36,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:24:36,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:36,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 23:24:36,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:36,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:24:36,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:36,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-22 23:24:36,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:36,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:24:36,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:36,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 23:24:36,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:36,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:24:36,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:36,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-22 23:24:36,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:36,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:24:36,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:36,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:24:36,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:36,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 23:24:36,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:36,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 23:24:36,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:36,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-07-22 23:24:36,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:36,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:24:36,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:36,872 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-07-22 23:24:36,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:24:36,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457534187] [2022-07-22 23:24:36,873 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457534187] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:24:36,873 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:24:36,873 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 23:24:36,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413437859] [2022-07-22 23:24:36,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:24:36,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 23:24:36,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:24:36,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 23:24:36,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-22 23:24:36,875 INFO L87 Difference]: Start difference. First operand 26703 states and 37670 transitions. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-22 23:24:39,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:24:39,715 INFO L93 Difference]: Finished difference Result 60783 states and 86776 transitions. [2022-07-22 23:24:39,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 23:24:39,716 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 146 [2022-07-22 23:24:39,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:24:39,819 INFO L225 Difference]: With dead ends: 60783 [2022-07-22 23:24:39,819 INFO L226 Difference]: Without dead ends: 34083 [2022-07-22 23:24:39,878 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-22 23:24:39,878 INFO L413 NwaCegarLoop]: 1289 mSDtfsCounter, 717 mSDsluCounter, 2471 mSDsCounter, 0 mSdLazyCounter, 898 mSolverCounterSat, 235 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 789 SdHoareTripleChecker+Valid, 3760 SdHoareTripleChecker+Invalid, 1133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 235 IncrementalHoareTripleChecker+Valid, 898 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-22 23:24:39,879 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [789 Valid, 3760 Invalid, 1133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [235 Valid, 898 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-22 23:24:39,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34083 states. [2022-07-22 23:24:41,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34083 to 31933. [2022-07-22 23:24:41,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31933 states, 26196 states have (on average 1.3918155443579172) internal successors, (36460), 26473 states have internal predecessors, (36460), 4277 states have call successors, (4277), 1561 states have call predecessors, (4277), 1459 states have return successors, (4243), 4114 states have call predecessors, (4243), 4243 states have call successors, (4243) [2022-07-22 23:24:41,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31933 states to 31933 states and 44980 transitions. [2022-07-22 23:24:41,679 INFO L78 Accepts]: Start accepts. Automaton has 31933 states and 44980 transitions. Word has length 146 [2022-07-22 23:24:41,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:24:41,680 INFO L495 AbstractCegarLoop]: Abstraction has 31933 states and 44980 transitions. [2022-07-22 23:24:41,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-22 23:24:41,680 INFO L276 IsEmpty]: Start isEmpty. Operand 31933 states and 44980 transitions. [2022-07-22 23:24:41,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-07-22 23:24:41,692 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:24:41,692 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:24:41,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-22 23:24:41,693 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:24:41,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:24:41,693 INFO L85 PathProgramCache]: Analyzing trace with hash 277990782, now seen corresponding path program 1 times [2022-07-22 23:24:41,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:24:41,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694443900] [2022-07-22 23:24:41,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:24:41,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:24:41,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:42,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 23:24:42,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:42,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:24:42,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:42,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 23:24:42,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:42,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:24:42,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:42,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-22 23:24:42,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:42,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:24:42,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:42,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:24:42,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:42,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 23:24:42,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:42,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 23:24:42,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:42,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-07-22 23:24:42,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:42,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:24:42,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:42,270 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-07-22 23:24:42,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:24:42,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694443900] [2022-07-22 23:24:42,271 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694443900] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:24:42,271 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:24:42,271 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 23:24:42,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999176382] [2022-07-22 23:24:42,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:24:42,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 23:24:42,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:24:42,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 23:24:42,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-22 23:24:42,273 INFO L87 Difference]: Start difference. First operand 31933 states and 44980 transitions. Second operand has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-07-22 23:24:45,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:24:45,439 INFO L93 Difference]: Finished difference Result 71555 states and 101924 transitions. [2022-07-22 23:24:45,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 23:24:45,440 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 144 [2022-07-22 23:24:45,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:24:45,593 INFO L225 Difference]: With dead ends: 71555 [2022-07-22 23:24:45,593 INFO L226 Difference]: Without dead ends: 39625 [2022-07-22 23:24:45,671 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-22 23:24:45,672 INFO L413 NwaCegarLoop]: 1280 mSDtfsCounter, 1056 mSDsluCounter, 1758 mSDsCounter, 0 mSdLazyCounter, 722 mSolverCounterSat, 507 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1128 SdHoareTripleChecker+Valid, 3038 SdHoareTripleChecker+Invalid, 1229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 507 IncrementalHoareTripleChecker+Valid, 722 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-22 23:24:45,672 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1128 Valid, 3038 Invalid, 1229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [507 Valid, 722 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-22 23:24:45,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39625 states. [2022-07-22 23:24:47,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39625 to 37163. [2022-07-22 23:24:47,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37163 states, 30532 states have (on average 1.3899515262675226) internal successors, (42438), 30845 states have internal predecessors, (42438), 4943 states have call successors, (4943), 1801 states have call predecessors, (4943), 1687 states have return successors, (4909), 4768 states have call predecessors, (4909), 4909 states have call successors, (4909) [2022-07-22 23:24:47,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37163 states to 37163 states and 52290 transitions. [2022-07-22 23:24:47,827 INFO L78 Accepts]: Start accepts. Automaton has 37163 states and 52290 transitions. Word has length 144 [2022-07-22 23:24:47,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:24:47,828 INFO L495 AbstractCegarLoop]: Abstraction has 37163 states and 52290 transitions. [2022-07-22 23:24:47,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-07-22 23:24:47,828 INFO L276 IsEmpty]: Start isEmpty. Operand 37163 states and 52290 transitions. [2022-07-22 23:24:47,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-07-22 23:24:47,843 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:24:47,844 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:24:47,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-22 23:24:47,844 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:24:47,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:24:47,845 INFO L85 PathProgramCache]: Analyzing trace with hash 113061130, now seen corresponding path program 1 times [2022-07-22 23:24:47,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:24:47,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138102425] [2022-07-22 23:24:47,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:24:47,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:24:48,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:48,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 23:24:48,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:48,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:24:48,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:48,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 23:24:48,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:48,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:24:48,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:48,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-22 23:24:48,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:48,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:24:48,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:48,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:24:48,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:48,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 23:24:48,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:48,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 23:24:48,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:48,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-22 23:24:48,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:48,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:24:48,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:48,469 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2022-07-22 23:24:48,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:24:48,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138102425] [2022-07-22 23:24:48,470 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138102425] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:24:48,470 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:24:48,470 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 23:24:48,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737386504] [2022-07-22 23:24:48,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:24:48,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 23:24:48,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:24:48,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 23:24:48,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-07-22 23:24:48,472 INFO L87 Difference]: Start difference. First operand 37163 states and 52290 transitions. Second operand has 8 states, 8 states have (on average 12.125) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2022-07-22 23:24:51,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:24:51,159 INFO L93 Difference]: Finished difference Result 76763 states and 108709 transitions. [2022-07-22 23:24:51,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 23:24:51,160 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) Word has length 148 [2022-07-22 23:24:51,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:24:51,279 INFO L225 Difference]: With dead ends: 76763 [2022-07-22 23:24:51,279 INFO L226 Difference]: Without dead ends: 39603 [2022-07-22 23:24:51,338 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2022-07-22 23:24:51,338 INFO L413 NwaCegarLoop]: 705 mSDtfsCounter, 1163 mSDsluCounter, 1731 mSDsCounter, 0 mSdLazyCounter, 752 mSolverCounterSat, 439 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1210 SdHoareTripleChecker+Valid, 2436 SdHoareTripleChecker+Invalid, 1191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 439 IncrementalHoareTripleChecker+Valid, 752 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-22 23:24:51,338 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1210 Valid, 2436 Invalid, 1191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [439 Valid, 752 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-22 23:24:51,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39603 states. [2022-07-22 23:24:52,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39603 to 37163. [2022-07-22 23:24:52,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37163 states, 30532 states have (on average 1.3895584960041922) internal successors, (42426), 30845 states have internal predecessors, (42426), 4943 states have call successors, (4943), 1801 states have call predecessors, (4943), 1687 states have return successors, (4909), 4768 states have call predecessors, (4909), 4909 states have call successors, (4909) [2022-07-22 23:24:53,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37163 states to 37163 states and 52278 transitions. [2022-07-22 23:24:53,038 INFO L78 Accepts]: Start accepts. Automaton has 37163 states and 52278 transitions. Word has length 148 [2022-07-22 23:24:53,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:24:53,039 INFO L495 AbstractCegarLoop]: Abstraction has 37163 states and 52278 transitions. [2022-07-22 23:24:53,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2022-07-22 23:24:53,040 INFO L276 IsEmpty]: Start isEmpty. Operand 37163 states and 52278 transitions. [2022-07-22 23:24:53,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-07-22 23:24:53,052 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:24:53,052 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:24:53,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-22 23:24:53,052 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:24:53,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:24:53,053 INFO L85 PathProgramCache]: Analyzing trace with hash 897344729, now seen corresponding path program 1 times [2022-07-22 23:24:53,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:24:53,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675552876] [2022-07-22 23:24:53,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:24:53,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:24:53,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:53,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 23:24:53,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:53,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:24:53,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:53,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 23:24:53,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:53,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:24:53,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:53,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-22 23:24:53,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:53,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:24:53,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:53,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:24:53,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:53,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 23:24:53,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:53,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 23:24:53,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:53,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-22 23:24:53,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:53,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:24:53,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:53,641 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-07-22 23:24:53,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:24:53,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675552876] [2022-07-22 23:24:53,642 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675552876] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:24:53,642 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:24:53,642 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 23:24:53,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436296511] [2022-07-22 23:24:53,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:24:53,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 23:24:53,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:24:53,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 23:24:53,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-07-22 23:24:53,644 INFO L87 Difference]: Start difference. First operand 37163 states and 52278 transitions. Second operand has 8 states, 8 states have (on average 12.25) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2022-07-22 23:24:56,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:24:56,498 INFO L93 Difference]: Finished difference Result 76763 states and 108685 transitions. [2022-07-22 23:24:56,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 23:24:56,499 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.25) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) Word has length 147 [2022-07-22 23:24:56,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:24:56,607 INFO L225 Difference]: With dead ends: 76763 [2022-07-22 23:24:56,607 INFO L226 Difference]: Without dead ends: 39603 [2022-07-22 23:24:56,668 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2022-07-22 23:24:56,670 INFO L413 NwaCegarLoop]: 704 mSDtfsCounter, 1162 mSDsluCounter, 1727 mSDsCounter, 0 mSdLazyCounter, 752 mSolverCounterSat, 439 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1209 SdHoareTripleChecker+Valid, 2431 SdHoareTripleChecker+Invalid, 1191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 439 IncrementalHoareTripleChecker+Valid, 752 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-22 23:24:56,670 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1209 Valid, 2431 Invalid, 1191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [439 Valid, 752 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-22 23:24:56,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39603 states. [2022-07-22 23:24:58,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39603 to 37163. [2022-07-22 23:24:58,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37163 states, 30532 states have (on average 1.389165465740862) internal successors, (42414), 30845 states have internal predecessors, (42414), 4943 states have call successors, (4943), 1801 states have call predecessors, (4943), 1687 states have return successors, (4909), 4768 states have call predecessors, (4909), 4909 states have call successors, (4909) [2022-07-22 23:24:58,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37163 states to 37163 states and 52266 transitions. [2022-07-22 23:24:58,464 INFO L78 Accepts]: Start accepts. Automaton has 37163 states and 52266 transitions. Word has length 147 [2022-07-22 23:24:58,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:24:58,465 INFO L495 AbstractCegarLoop]: Abstraction has 37163 states and 52266 transitions. [2022-07-22 23:24:58,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.25) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2022-07-22 23:24:58,465 INFO L276 IsEmpty]: Start isEmpty. Operand 37163 states and 52266 transitions. [2022-07-22 23:24:58,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-07-22 23:24:58,475 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:24:58,476 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-22 23:24:58,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-22 23:24:58,476 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:24:58,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:24:58,477 INFO L85 PathProgramCache]: Analyzing trace with hash 2054948044, now seen corresponding path program 1 times [2022-07-22 23:24:58,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:24:58,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716791102] [2022-07-22 23:24:58,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:24:58,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:24:58,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:58,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 23:24:58,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:58,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:24:58,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:58,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-22 23:24:58,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:58,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:24:58,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:58,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 23:24:58,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:58,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:24:58,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:58,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-22 23:24:58,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:58,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:24:58,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:58,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:24:58,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:59,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 23:24:59,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:59,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 23:24:59,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:59,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-07-22 23:24:59,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:59,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:24:59,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:59,011 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-07-22 23:24:59,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:24:59,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716791102] [2022-07-22 23:24:59,011 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716791102] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:24:59,011 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:24:59,012 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 23:24:59,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015547324] [2022-07-22 23:24:59,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:24:59,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 23:24:59,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:24:59,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 23:24:59,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-07-22 23:24:59,014 INFO L87 Difference]: Start difference. First operand 37163 states and 52266 transitions. Second operand has 8 states, 8 states have (on average 11.875) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (14), 5 states have call predecessors, (14), 2 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-22 23:25:01,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:25:01,819 INFO L93 Difference]: Finished difference Result 76763 states and 108661 transitions. [2022-07-22 23:25:01,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 23:25:01,820 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (14), 5 states have call predecessors, (14), 2 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) Word has length 150 [2022-07-22 23:25:01,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:25:01,944 INFO L225 Difference]: With dead ends: 76763 [2022-07-22 23:25:01,944 INFO L226 Difference]: Without dead ends: 39603 [2022-07-22 23:25:02,020 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2022-07-22 23:25:02,020 INFO L413 NwaCegarLoop]: 703 mSDtfsCounter, 993 mSDsluCounter, 1758 mSDsCounter, 0 mSdLazyCounter, 769 mSolverCounterSat, 333 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1040 SdHoareTripleChecker+Valid, 2461 SdHoareTripleChecker+Invalid, 1102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 333 IncrementalHoareTripleChecker+Valid, 769 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-22 23:25:02,021 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1040 Valid, 2461 Invalid, 1102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [333 Valid, 769 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-22 23:25:02,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39603 states. [2022-07-22 23:25:03,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39603 to 37163. [2022-07-22 23:25:03,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37163 states, 30532 states have (on average 1.3887724354775317) internal successors, (42402), 30845 states have internal predecessors, (42402), 4943 states have call successors, (4943), 1801 states have call predecessors, (4943), 1687 states have return successors, (4909), 4768 states have call predecessors, (4909), 4909 states have call successors, (4909) [2022-07-22 23:25:03,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37163 states to 37163 states and 52254 transitions. [2022-07-22 23:25:03,725 INFO L78 Accepts]: Start accepts. Automaton has 37163 states and 52254 transitions. Word has length 150 [2022-07-22 23:25:03,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:25:03,725 INFO L495 AbstractCegarLoop]: Abstraction has 37163 states and 52254 transitions. [2022-07-22 23:25:03,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (14), 5 states have call predecessors, (14), 2 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-22 23:25:03,725 INFO L276 IsEmpty]: Start isEmpty. Operand 37163 states and 52254 transitions. [2022-07-22 23:25:03,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-07-22 23:25:03,733 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:25:03,734 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1] [2022-07-22 23:25:03,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-22 23:25:03,734 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:25:03,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:25:03,735 INFO L85 PathProgramCache]: Analyzing trace with hash 929454426, now seen corresponding path program 1 times [2022-07-22 23:25:03,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:25:03,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018662244] [2022-07-22 23:25:03,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:25:03,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:25:03,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:04,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 23:25:04,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:04,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:25:04,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:04,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-22 23:25:04,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:04,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:25:04,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:04,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 23:25:04,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:04,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:25:04,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:04,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-22 23:25:04,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:04,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-22 23:25:04,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:04,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-22 23:25:04,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:04,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-22 23:25:04,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:04,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:25:04,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:04,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:25:04,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:04,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:25:04,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:04,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-07-22 23:25:04,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:04,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:25:04,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:04,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-22 23:25:04,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:04,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-07-22 23:25:04,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:04,239 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-07-22 23:25:04,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:25:04,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018662244] [2022-07-22 23:25:04,240 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018662244] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:25:04,240 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:25:04,240 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 23:25:04,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949591601] [2022-07-22 23:25:04,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:25:04,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 23:25:04,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:25:04,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 23:25:04,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 23:25:04,243 INFO L87 Difference]: Start difference. First operand 37163 states and 52254 transitions. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (18), 5 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-22 23:25:07,132 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:25:08,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:25:08,823 INFO L93 Difference]: Finished difference Result 62438 states and 87847 transitions. [2022-07-22 23:25:08,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-22 23:25:08,824 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (18), 5 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 151 [2022-07-22 23:25:08,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:25:08,894 INFO L225 Difference]: With dead ends: 62438 [2022-07-22 23:25:08,894 INFO L226 Difference]: Without dead ends: 25236 [2022-07-22 23:25:08,943 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-07-22 23:25:08,944 INFO L413 NwaCegarLoop]: 681 mSDtfsCounter, 636 mSDsluCounter, 1562 mSDsCounter, 0 mSdLazyCounter, 663 mSolverCounterSat, 393 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 653 SdHoareTripleChecker+Valid, 2243 SdHoareTripleChecker+Invalid, 1057 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 393 IncrementalHoareTripleChecker+Valid, 663 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-07-22 23:25:08,944 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [653 Valid, 2243 Invalid, 1057 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [393 Valid, 663 Invalid, 1 Unknown, 0 Unchecked, 3.1s Time] [2022-07-22 23:25:08,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25236 states. [2022-07-22 23:25:09,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25236 to 16417. [2022-07-22 23:25:09,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16417 states, 13428 states have (on average 1.4063896336014299) internal successors, (18885), 13582 states have internal predecessors, (18885), 2216 states have call successors, (2216), 829 states have call predecessors, (2216), 772 states have return successors, (2200), 2131 states have call predecessors, (2200), 2200 states have call successors, (2200) [2022-07-22 23:25:09,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16417 states to 16417 states and 23301 transitions. [2022-07-22 23:25:09,766 INFO L78 Accepts]: Start accepts. Automaton has 16417 states and 23301 transitions. Word has length 151 [2022-07-22 23:25:09,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:25:09,767 INFO L495 AbstractCegarLoop]: Abstraction has 16417 states and 23301 transitions. [2022-07-22 23:25:09,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (18), 5 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-22 23:25:09,767 INFO L276 IsEmpty]: Start isEmpty. Operand 16417 states and 23301 transitions. [2022-07-22 23:25:09,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-07-22 23:25:09,772 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:25:09,773 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1] [2022-07-22 23:25:09,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-22 23:25:09,773 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:25:09,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:25:09,774 INFO L85 PathProgramCache]: Analyzing trace with hash -1424930856, now seen corresponding path program 1 times [2022-07-22 23:25:09,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:25:09,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003444400] [2022-07-22 23:25:09,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:25:09,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:25:10,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:10,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 23:25:10,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:10,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:25:10,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:10,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-22 23:25:10,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:10,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:25:10,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:10,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 23:25:10,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:10,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:25:10,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:10,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-22 23:25:10,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:10,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-22 23:25:10,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:10,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-22 23:25:10,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:10,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-22 23:25:10,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:10,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:25:10,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:10,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:25:10,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:10,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:25:10,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:10,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-07-22 23:25:10,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:10,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:25:10,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:10,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-22 23:25:10,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:10,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-07-22 23:25:10,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:10,262 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2022-07-22 23:25:10,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:25:10,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003444400] [2022-07-22 23:25:10,263 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003444400] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:25:10,263 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:25:10,263 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 23:25:10,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668661999] [2022-07-22 23:25:10,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:25:10,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 23:25:10,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:25:10,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 23:25:10,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 23:25:10,265 INFO L87 Difference]: Start difference. First operand 16417 states and 23301 transitions. Second operand has 6 states, 6 states have (on average 15.0) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (18), 5 states have call predecessors, (18), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2022-07-22 23:25:13,140 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:25:14,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:25:14,258 INFO L93 Difference]: Finished difference Result 34860 states and 50112 transitions. [2022-07-22 23:25:14,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-22 23:25:14,259 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (18), 5 states have call predecessors, (18), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 151 [2022-07-22 23:25:14,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:25:14,335 INFO L225 Difference]: With dead ends: 34860 [2022-07-22 23:25:14,335 INFO L226 Difference]: Without dead ends: 18461 [2022-07-22 23:25:14,366 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2022-07-22 23:25:14,367 INFO L413 NwaCegarLoop]: 682 mSDtfsCounter, 626 mSDsluCounter, 1567 mSDsCounter, 0 mSdLazyCounter, 657 mSolverCounterSat, 385 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 643 SdHoareTripleChecker+Valid, 2249 SdHoareTripleChecker+Invalid, 1043 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 385 IncrementalHoareTripleChecker+Valid, 657 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-07-22 23:25:14,367 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [643 Valid, 2249 Invalid, 1043 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [385 Valid, 657 Invalid, 1 Unknown, 0 Unchecked, 3.1s Time] [2022-07-22 23:25:14,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18461 states. [2022-07-22 23:25:15,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18461 to 16438. [2022-07-22 23:25:15,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16438 states, 13449 states have (on average 1.4057550747267455) internal successors, (18906), 13603 states have internal predecessors, (18906), 2216 states have call successors, (2216), 829 states have call predecessors, (2216), 772 states have return successors, (2200), 2131 states have call predecessors, (2200), 2200 states have call successors, (2200) [2022-07-22 23:25:15,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16438 states to 16438 states and 23322 transitions. [2022-07-22 23:25:15,255 INFO L78 Accepts]: Start accepts. Automaton has 16438 states and 23322 transitions. Word has length 151 [2022-07-22 23:25:15,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:25:15,255 INFO L495 AbstractCegarLoop]: Abstraction has 16438 states and 23322 transitions. [2022-07-22 23:25:15,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (18), 5 states have call predecessors, (18), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2022-07-22 23:25:15,256 INFO L276 IsEmpty]: Start isEmpty. Operand 16438 states and 23322 transitions. [2022-07-22 23:25:15,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-07-22 23:25:15,260 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:25:15,260 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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, 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 23:25:15,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-22 23:25:15,261 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:25:15,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:25:15,261 INFO L85 PathProgramCache]: Analyzing trace with hash 1348103812, now seen corresponding path program 1 times [2022-07-22 23:25:15,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:25:15,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899606213] [2022-07-22 23:25:15,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:25:15,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:25:15,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:15,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 23:25:15,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:15,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:25:15,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:15,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 23:25:15,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:15,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:25:15,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:15,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-22 23:25:15,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:15,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-22 23:25:15,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:15,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-22 23:25:15,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:15,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-22 23:25:15,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:15,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:25:15,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:15,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:25:15,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:15,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:25:15,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:15,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-22 23:25:15,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:15,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:25:15,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:15,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-22 23:25:15,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:15,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-07-22 23:25:15,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:15,962 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-07-22 23:25:15,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:25:15,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899606213] [2022-07-22 23:25:15,963 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899606213] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:25:15,963 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:25:15,963 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 23:25:15,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997751593] [2022-07-22 23:25:15,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:25:15,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 23:25:15,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:25:15,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 23:25:15,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 23:25:15,965 INFO L87 Difference]: Start difference. First operand 16438 states and 23322 transitions. Second operand has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 3 states have internal predecessors, (101), 3 states have call successors, (17), 6 states have call predecessors, (17), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-22 23:25:19,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:25:19,414 INFO L93 Difference]: Finished difference Result 34883 states and 49969 transitions. [2022-07-22 23:25:19,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 23:25:19,415 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 3 states have internal predecessors, (101), 3 states have call successors, (17), 6 states have call predecessors, (17), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 150 [2022-07-22 23:25:19,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:25:19,487 INFO L225 Difference]: With dead ends: 34883 [2022-07-22 23:25:19,487 INFO L226 Difference]: Without dead ends: 18463 [2022-07-22 23:25:19,529 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2022-07-22 23:25:19,530 INFO L413 NwaCegarLoop]: 1080 mSDtfsCounter, 1174 mSDsluCounter, 2113 mSDsCounter, 0 mSdLazyCounter, 777 mSolverCounterSat, 628 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1211 SdHoareTripleChecker+Valid, 3193 SdHoareTripleChecker+Invalid, 1405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 628 IncrementalHoareTripleChecker+Valid, 777 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-22 23:25:19,530 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1211 Valid, 3193 Invalid, 1405 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [628 Valid, 777 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-22 23:25:19,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18463 states. [2022-07-22 23:25:20,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18463 to 16292. [2022-07-22 23:25:20,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16292 states, 13346 states have (on average 1.4051401168889555) internal successors, (18753), 13517 states have internal predecessors, (18753), 2179 states have call successors, (2179), 798 states have call predecessors, (2179), 766 states have return successors, (2128), 2102 states have call predecessors, (2128), 2128 states have call successors, (2128) [2022-07-22 23:25:20,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16292 states to 16292 states and 23060 transitions. [2022-07-22 23:25:20,325 INFO L78 Accepts]: Start accepts. Automaton has 16292 states and 23060 transitions. Word has length 150 [2022-07-22 23:25:20,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:25:20,325 INFO L495 AbstractCegarLoop]: Abstraction has 16292 states and 23060 transitions. [2022-07-22 23:25:20,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 3 states have internal predecessors, (101), 3 states have call successors, (17), 6 states have call predecessors, (17), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-22 23:25:20,325 INFO L276 IsEmpty]: Start isEmpty. Operand 16292 states and 23060 transitions. [2022-07-22 23:25:20,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-07-22 23:25:20,331 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:25:20,331 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:25:20,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-22 23:25:20,331 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:25:20,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:25:20,331 INFO L85 PathProgramCache]: Analyzing trace with hash -2100446626, now seen corresponding path program 1 times [2022-07-22 23:25:20,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:25:20,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292786642] [2022-07-22 23:25:20,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:25:20,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:25:20,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:20,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 23:25:20,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:20,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:25:20,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:20,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-22 23:25:20,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:20,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:25:20,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:20,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 23:25:20,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:20,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:25:20,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:20,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-22 23:25:20,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:20,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:25:20,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:20,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:25:20,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:20,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 23:25:20,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:20,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 23:25:20,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:20,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-22 23:25:20,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:20,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:25:20,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:20,900 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-07-22 23:25:20,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:25:20,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292786642] [2022-07-22 23:25:20,902 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292786642] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:25:20,902 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:25:20,903 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 23:25:20,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792493945] [2022-07-22 23:25:20,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:25:20,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 23:25:20,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:25:20,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 23:25:20,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-22 23:25:20,904 INFO L87 Difference]: Start difference. First operand 16292 states and 23060 transitions. Second operand has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 3 states have internal predecessors, (100), 3 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-22 23:25:22,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:25:22,400 INFO L93 Difference]: Finished difference Result 32630 states and 46503 transitions. [2022-07-22 23:25:22,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-22 23:25:22,404 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 3 states have internal predecessors, (100), 3 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 154 [2022-07-22 23:25:22,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:25:22,471 INFO L225 Difference]: With dead ends: 32630 [2022-07-22 23:25:22,471 INFO L226 Difference]: Without dead ends: 15272 [2022-07-22 23:25:22,516 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-22 23:25:22,517 INFO L413 NwaCegarLoop]: 738 mSDtfsCounter, 871 mSDsluCounter, 916 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 332 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 907 SdHoareTripleChecker+Valid, 1654 SdHoareTripleChecker+Invalid, 588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 332 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-22 23:25:22,517 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [907 Valid, 1654 Invalid, 588 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [332 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-22 23:25:22,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15272 states. [2022-07-22 23:25:23,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15272 to 14228. [2022-07-22 23:25:23,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14228 states, 11664 states have (on average 1.4020061728395061) internal successors, (16353), 11826 states have internal predecessors, (16353), 1912 states have call successors, (1912), 683 states have call predecessors, (1912), 651 states have return successors, (1861), 1835 states have call predecessors, (1861), 1861 states have call successors, (1861) [2022-07-22 23:25:23,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14228 states to 14228 states and 20126 transitions. [2022-07-22 23:25:23,239 INFO L78 Accepts]: Start accepts. Automaton has 14228 states and 20126 transitions. Word has length 154 [2022-07-22 23:25:23,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:25:23,240 INFO L495 AbstractCegarLoop]: Abstraction has 14228 states and 20126 transitions. [2022-07-22 23:25:23,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 3 states have internal predecessors, (100), 3 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-22 23:25:23,240 INFO L276 IsEmpty]: Start isEmpty. Operand 14228 states and 20126 transitions. [2022-07-22 23:25:23,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-07-22 23:25:23,246 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:25:23,246 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:25:23,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-22 23:25:23,246 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:25:23,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:25:23,246 INFO L85 PathProgramCache]: Analyzing trace with hash -776232164, now seen corresponding path program 1 times [2022-07-22 23:25:23,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:25:23,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516892619] [2022-07-22 23:25:23,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:25:23,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:25:23,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:23,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 23:25:23,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:23,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:25:23,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:23,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-22 23:25:23,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:23,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:25:23,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:23,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 23:25:23,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:23,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:25:23,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:23,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-22 23:25:23,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:23,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:25:23,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:23,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:25:23,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:23,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 23:25:23,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:23,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 23:25:23,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:23,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-07-22 23:25:23,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:23,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:25:23,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:23,673 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2022-07-22 23:25:23,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:25:23,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516892619] [2022-07-22 23:25:23,673 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516892619] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:25:23,673 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:25:23,673 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 23:25:23,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806838810] [2022-07-22 23:25:23,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:25:23,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 23:25:23,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:25:23,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 23:25:23,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-22 23:25:23,675 INFO L87 Difference]: Start difference. First operand 14228 states and 20126 transitions. Second operand has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-22 23:25:25,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:25:25,573 INFO L93 Difference]: Finished difference Result 31516 states and 45011 transitions. [2022-07-22 23:25:25,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 23:25:25,574 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 164 [2022-07-22 23:25:25,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:25:25,640 INFO L225 Difference]: With dead ends: 31516 [2022-07-22 23:25:25,640 INFO L226 Difference]: Without dead ends: 17425 [2022-07-22 23:25:25,675 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-22 23:25:25,677 INFO L413 NwaCegarLoop]: 1186 mSDtfsCounter, 962 mSDsluCounter, 1603 mSDsCounter, 0 mSdLazyCounter, 699 mSolverCounterSat, 496 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1026 SdHoareTripleChecker+Valid, 2789 SdHoareTripleChecker+Invalid, 1195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 496 IncrementalHoareTripleChecker+Valid, 699 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-22 23:25:25,677 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1026 Valid, 2789 Invalid, 1195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [496 Valid, 699 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-22 23:25:25,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17425 states. [2022-07-22 23:25:26,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17425 to 16360. [2022-07-22 23:25:26,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16360 states, 13427 states have (on average 1.4004617561629553) internal successors, (18804), 13610 states have internal predecessors, (18804), 2188 states have call successors, (2188), 779 states have call predecessors, (2188), 744 states have return successors, (2134), 2105 states have call predecessors, (2134), 2134 states have call successors, (2134) [2022-07-22 23:25:26,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16360 states to 16360 states and 23126 transitions. [2022-07-22 23:25:26,368 INFO L78 Accepts]: Start accepts. Automaton has 16360 states and 23126 transitions. Word has length 164 [2022-07-22 23:25:26,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:25:26,369 INFO L495 AbstractCegarLoop]: Abstraction has 16360 states and 23126 transitions. [2022-07-22 23:25:26,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-22 23:25:26,369 INFO L276 IsEmpty]: Start isEmpty. Operand 16360 states and 23126 transitions. [2022-07-22 23:25:26,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-07-22 23:25:26,377 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:25:26,377 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:25:26,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-22 23:25:26,378 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:25:26,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:25:26,378 INFO L85 PathProgramCache]: Analyzing trace with hash -1700642405, now seen corresponding path program 1 times [2022-07-22 23:25:26,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:25:26,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219299197] [2022-07-22 23:25:26,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:25:26,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:25:26,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:26,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 23:25:26,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:26,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:25:26,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:26,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-22 23:25:26,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:26,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:25:26,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:26,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 23:25:26,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:26,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:25:26,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:26,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-22 23:25:26,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:26,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:25:26,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:26,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:25:26,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:26,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 23:25:26,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:26,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 23:25:26,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:26,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-22 23:25:26,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:26,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:25:26,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:26,850 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2022-07-22 23:25:26,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:25:26,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219299197] [2022-07-22 23:25:26,851 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219299197] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:25:26,851 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:25:26,851 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 23:25:26,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035038958] [2022-07-22 23:25:26,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:25:26,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 23:25:26,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:25:26,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 23:25:26,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-22 23:25:26,853 INFO L87 Difference]: Start difference. First operand 16360 states and 23126 transitions. Second operand has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-22 23:25:28,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:25:28,777 INFO L93 Difference]: Finished difference Result 35909 states and 51218 transitions. [2022-07-22 23:25:28,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 23:25:28,778 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 169 [2022-07-22 23:25:28,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:25:28,862 INFO L225 Difference]: With dead ends: 35909 [2022-07-22 23:25:28,863 INFO L226 Difference]: Without dead ends: 19686 [2022-07-22 23:25:28,916 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-22 23:25:28,916 INFO L413 NwaCegarLoop]: 1187 mSDtfsCounter, 961 mSDsluCounter, 1603 mSDsCounter, 0 mSdLazyCounter, 702 mSolverCounterSat, 496 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1025 SdHoareTripleChecker+Valid, 2790 SdHoareTripleChecker+Invalid, 1198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 496 IncrementalHoareTripleChecker+Valid, 702 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-22 23:25:28,917 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1025 Valid, 2790 Invalid, 1198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [496 Valid, 702 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-22 23:25:29,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19686 states. [2022-07-22 23:25:29,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19686 to 18492. [2022-07-22 23:25:29,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18492 states, 15190 states have (on average 1.3992758393680054) internal successors, (21255), 15394 states have internal predecessors, (21255), 2464 states have call successors, (2464), 875 states have call predecessors, (2464), 837 states have return successors, (2407), 2375 states have call predecessors, (2407), 2407 states have call successors, (2407) [2022-07-22 23:25:29,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18492 states to 18492 states and 26126 transitions. [2022-07-22 23:25:29,799 INFO L78 Accepts]: Start accepts. Automaton has 18492 states and 26126 transitions. Word has length 169 [2022-07-22 23:25:29,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:25:29,799 INFO L495 AbstractCegarLoop]: Abstraction has 18492 states and 26126 transitions. [2022-07-22 23:25:29,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-22 23:25:29,800 INFO L276 IsEmpty]: Start isEmpty. Operand 18492 states and 26126 transitions. [2022-07-22 23:25:29,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2022-07-22 23:25:29,806 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:25:29,807 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:25:29,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-22 23:25:29,807 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:25:29,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:25:29,808 INFO L85 PathProgramCache]: Analyzing trace with hash 1807960654, now seen corresponding path program 1 times [2022-07-22 23:25:29,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:25:29,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791267926] [2022-07-22 23:25:29,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:25:29,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:25:30,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:30,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 23:25:30,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:30,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:25:30,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:30,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-22 23:25:30,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:30,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:25:30,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:30,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 23:25:30,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:30,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:25:30,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:30,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-22 23:25:30,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:30,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:25:30,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:30,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:25:30,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:30,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 23:25:30,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:30,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 23:25:30,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:30,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-07-22 23:25:30,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:30,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:25:30,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:30,339 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-07-22 23:25:30,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:25:30,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791267926] [2022-07-22 23:25:30,340 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791267926] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:25:30,340 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:25:30,340 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 23:25:30,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323706237] [2022-07-22 23:25:30,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:25:30,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 23:25:30,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:25:30,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 23:25:30,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-22 23:25:30,342 INFO L87 Difference]: Start difference. First operand 18492 states and 26126 transitions. Second operand has 6 states, 6 states have (on average 16.5) internal successors, (99), 3 states have internal predecessors, (99), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-22 23:25:32,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:25:32,382 INFO L93 Difference]: Finished difference Result 40302 states and 57425 transitions. [2022-07-22 23:25:32,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 23:25:32,383 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 3 states have internal predecessors, (99), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 171 [2022-07-22 23:25:32,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:25:32,455 INFO L225 Difference]: With dead ends: 40302 [2022-07-22 23:25:32,456 INFO L226 Difference]: Without dead ends: 21947 [2022-07-22 23:25:32,487 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-22 23:25:32,487 INFO L413 NwaCegarLoop]: 1186 mSDtfsCounter, 961 mSDsluCounter, 1603 mSDsCounter, 0 mSdLazyCounter, 699 mSolverCounterSat, 496 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1025 SdHoareTripleChecker+Valid, 2789 SdHoareTripleChecker+Invalid, 1195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 496 IncrementalHoareTripleChecker+Valid, 699 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-22 23:25:32,488 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1025 Valid, 2789 Invalid, 1195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [496 Valid, 699 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-22 23:25:32,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21947 states. [2022-07-22 23:25:33,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21947 to 20624. [2022-07-22 23:25:33,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20624 states, 16953 states have (on average 1.3983365775968855) internal successors, (23706), 17178 states have internal predecessors, (23706), 2740 states have call successors, (2740), 971 states have call predecessors, (2740), 930 states have return successors, (2680), 2645 states have call predecessors, (2680), 2680 states have call successors, (2680) [2022-07-22 23:25:33,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20624 states to 20624 states and 29126 transitions. [2022-07-22 23:25:33,240 INFO L78 Accepts]: Start accepts. Automaton has 20624 states and 29126 transitions. Word has length 171 [2022-07-22 23:25:33,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:25:33,240 INFO L495 AbstractCegarLoop]: Abstraction has 20624 states and 29126 transitions. [2022-07-22 23:25:33,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 3 states have internal predecessors, (99), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-22 23:25:33,241 INFO L276 IsEmpty]: Start isEmpty. Operand 20624 states and 29126 transitions. [2022-07-22 23:25:33,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-07-22 23:25:33,247 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:25:33,248 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:25:33,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-22 23:25:33,248 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:25:33,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:25:33,248 INFO L85 PathProgramCache]: Analyzing trace with hash 23136728, now seen corresponding path program 1 times [2022-07-22 23:25:33,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:25:33,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614202789] [2022-07-22 23:25:33,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:25:33,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:25:33,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:33,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 23:25:33,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:33,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:25:33,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:33,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 23:25:33,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:33,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:25:33,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:33,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-22 23:25:33,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:33,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:25:33,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:33,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-22 23:25:33,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:33,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-22 23:25:33,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:33,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:25:33,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:33,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:25:33,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:33,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 23:25:33,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:33,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 23:25:33,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:33,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-07-22 23:25:33,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:33,719 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2022-07-22 23:25:33,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:25:33,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614202789] [2022-07-22 23:25:33,719 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614202789] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:25:33,719 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:25:33,719 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 23:25:33,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533060354] [2022-07-22 23:25:33,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:25:33,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 23:25:33,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:25:33,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 23:25:33,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-22 23:25:33,722 INFO L87 Difference]: Start difference. First operand 20624 states and 29126 transitions. Second operand has 6 states, 6 states have (on average 19.833333333333332) internal successors, (119), 3 states have internal predecessors, (119), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-22 23:25:35,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:25:35,561 INFO L93 Difference]: Finished difference Result 45039 states and 63547 transitions. [2022-07-22 23:25:35,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 23:25:35,562 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.833333333333332) internal successors, (119), 3 states have internal predecessors, (119), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 172 [2022-07-22 23:25:35,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:25:35,629 INFO L225 Difference]: With dead ends: 45039 [2022-07-22 23:25:35,629 INFO L226 Difference]: Without dead ends: 24552 [2022-07-22 23:25:35,662 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-22 23:25:35,663 INFO L413 NwaCegarLoop]: 804 mSDtfsCounter, 1097 mSDsluCounter, 1198 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 505 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1135 SdHoareTripleChecker+Valid, 2002 SdHoareTripleChecker+Invalid, 819 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 505 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-22 23:25:35,663 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1135 Valid, 2002 Invalid, 819 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [505 Valid, 314 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-22 23:25:35,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24552 states. [2022-07-22 23:25:36,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24552 to 22951. [2022-07-22 23:25:36,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22951 states, 19066 states have (on average 1.3963075632015105) internal successors, (26622), 19303 states have internal predecessors, (26622), 2764 states have call successors, (2764), 1165 states have call predecessors, (2764), 1120 states have return successors, (2692), 2653 states have call predecessors, (2692), 2692 states have call successors, (2692) [2022-07-22 23:25:36,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22951 states to 22951 states and 32078 transitions. [2022-07-22 23:25:36,543 INFO L78 Accepts]: Start accepts. Automaton has 22951 states and 32078 transitions. Word has length 172 [2022-07-22 23:25:36,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:25:36,544 INFO L495 AbstractCegarLoop]: Abstraction has 22951 states and 32078 transitions. [2022-07-22 23:25:36,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.833333333333332) internal successors, (119), 3 states have internal predecessors, (119), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-22 23:25:36,544 INFO L276 IsEmpty]: Start isEmpty. Operand 22951 states and 32078 transitions. [2022-07-22 23:25:36,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-07-22 23:25:36,549 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:25:36,549 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:25:36,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-07-22 23:25:36,549 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:25:36,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:25:36,550 INFO L85 PathProgramCache]: Analyzing trace with hash 2013692618, now seen corresponding path program 1 times [2022-07-22 23:25:36,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:25:36,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843090136] [2022-07-22 23:25:36,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:25:36,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:25:36,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:36,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 23:25:36,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:36,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:25:36,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:36,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-22 23:25:36,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:36,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:25:36,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:36,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 23:25:36,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:36,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:25:36,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:36,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-22 23:25:36,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:36,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:25:36,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:36,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:25:36,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:37,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 23:25:37,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:37,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 23:25:37,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:37,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-22 23:25:37,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:37,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:25:37,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:37,013 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2022-07-22 23:25:37,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:25:37,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843090136] [2022-07-22 23:25:37,013 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843090136] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:25:37,013 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:25:37,013 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 23:25:37,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21511889] [2022-07-22 23:25:37,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:25:37,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 23:25:37,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:25:37,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 23:25:37,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-22 23:25:37,015 INFO L87 Difference]: Start difference. First operand 22951 states and 32078 transitions. Second operand has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 3 states have internal predecessors, (92), 3 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-22 23:25:40,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:25:40,122 INFO L93 Difference]: Finished difference Result 71708 states and 100510 transitions. [2022-07-22 23:25:40,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 23:25:40,123 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 3 states have internal predecessors, (92), 3 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 169 [2022-07-22 23:25:40,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:25:40,326 INFO L225 Difference]: With dead ends: 71708 [2022-07-22 23:25:40,327 INFO L226 Difference]: Without dead ends: 48851 [2022-07-22 23:25:40,383 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-22 23:25:40,384 INFO L413 NwaCegarLoop]: 721 mSDtfsCounter, 1734 mSDsluCounter, 1216 mSDsCounter, 0 mSdLazyCounter, 600 mSolverCounterSat, 817 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1811 SdHoareTripleChecker+Valid, 1937 SdHoareTripleChecker+Invalid, 1417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 817 IncrementalHoareTripleChecker+Valid, 600 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-22 23:25:40,384 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1811 Valid, 1937 Invalid, 1417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [817 Valid, 600 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-22 23:25:40,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48851 states. [2022-07-22 23:25:41,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48851 to 23005. [2022-07-22 23:25:41,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23005 states, 19110 states have (on average 1.3958660387231816) internal successors, (26675), 19347 states have internal predecessors, (26675), 2769 states have call successors, (2769), 1170 states have call predecessors, (2769), 1125 states have return successors, (2697), 2658 states have call predecessors, (2697), 2697 states have call successors, (2697) [2022-07-22 23:25:41,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23005 states to 23005 states and 32141 transitions. [2022-07-22 23:25:41,691 INFO L78 Accepts]: Start accepts. Automaton has 23005 states and 32141 transitions. Word has length 169 [2022-07-22 23:25:41,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:25:41,692 INFO L495 AbstractCegarLoop]: Abstraction has 23005 states and 32141 transitions. [2022-07-22 23:25:41,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 3 states have internal predecessors, (92), 3 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-22 23:25:41,692 INFO L276 IsEmpty]: Start isEmpty. Operand 23005 states and 32141 transitions. [2022-07-22 23:25:41,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-07-22 23:25:41,698 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:25:41,698 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:25:41,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-07-22 23:25:41,698 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:25:41,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:25:41,699 INFO L85 PathProgramCache]: Analyzing trace with hash 189954287, now seen corresponding path program 1 times [2022-07-22 23:25:41,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:25:41,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553041573] [2022-07-22 23:25:41,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:25:41,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:25:41,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:42,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 23:25:42,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:42,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:25:42,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:42,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-22 23:25:42,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:42,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:25:42,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:42,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 23:25:42,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:42,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:25:42,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:42,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-22 23:25:42,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:42,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:25:42,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:42,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:25:42,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:42,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 23:25:42,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:42,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 23:25:42,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:42,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-07-22 23:25:42,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:42,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:25:42,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:42,279 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-07-22 23:25:42,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:25:42,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553041573] [2022-07-22 23:25:42,279 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553041573] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:25:42,280 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:25:42,280 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 23:25:42,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291518917] [2022-07-22 23:25:42,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:25:42,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 23:25:42,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:25:42,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 23:25:42,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-22 23:25:42,282 INFO L87 Difference]: Start difference. First operand 23005 states and 32141 transitions. Second operand has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 3 states have internal predecessors, (101), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-22 23:25:44,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:25:44,747 INFO L93 Difference]: Finished difference Result 49826 states and 70057 transitions. [2022-07-22 23:25:44,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 23:25:44,748 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 3 states have internal predecessors, (101), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 172 [2022-07-22 23:25:44,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:25:44,833 INFO L225 Difference]: With dead ends: 49826 [2022-07-22 23:25:44,833 INFO L226 Difference]: Without dead ends: 27012 [2022-07-22 23:25:44,880 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-22 23:25:44,881 INFO L413 NwaCegarLoop]: 1102 mSDtfsCounter, 826 mSDsluCounter, 1497 mSDsCounter, 0 mSdLazyCounter, 724 mSolverCounterSat, 392 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 891 SdHoareTripleChecker+Valid, 2599 SdHoareTripleChecker+Invalid, 1116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 392 IncrementalHoareTripleChecker+Valid, 724 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-22 23:25:44,881 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [891 Valid, 2599 Invalid, 1116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [392 Valid, 724 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-22 23:25:44,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27012 states. [2022-07-22 23:25:46,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27012 to 25343. [2022-07-22 23:25:46,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25343 states, 21059 states have (on average 1.3948430599743578) internal successors, (29374), 21317 states have internal predecessors, (29374), 3045 states have call successors, (3045), 1286 states have call predecessors, (3045), 1238 states have return successors, (2970), 2928 states have call predecessors, (2970), 2970 states have call successors, (2970) [2022-07-22 23:25:46,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25343 states to 25343 states and 35389 transitions. [2022-07-22 23:25:46,192 INFO L78 Accepts]: Start accepts. Automaton has 25343 states and 35389 transitions. Word has length 172 [2022-07-22 23:25:46,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:25:46,192 INFO L495 AbstractCegarLoop]: Abstraction has 25343 states and 35389 transitions. [2022-07-22 23:25:46,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 3 states have internal predecessors, (101), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-22 23:25:46,192 INFO L276 IsEmpty]: Start isEmpty. Operand 25343 states and 35389 transitions. [2022-07-22 23:25:46,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2022-07-22 23:25:46,199 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:25:46,199 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:25:46,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-07-22 23:25:46,199 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:25:46,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:25:46,200 INFO L85 PathProgramCache]: Analyzing trace with hash 1907516332, now seen corresponding path program 1 times [2022-07-22 23:25:46,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:25:46,200 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085053555] [2022-07-22 23:25:46,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:25:46,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:25:46,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:46,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 23:25:46,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:46,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:25:46,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:46,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-22 23:25:46,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:46,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:25:46,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:46,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 23:25:46,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:46,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:25:46,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:46,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-22 23:25:46,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:46,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:25:46,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:46,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:25:46,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:46,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 23:25:46,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:46,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 23:25:46,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:46,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-07-22 23:25:46,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:46,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:25:46,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:46,811 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-07-22 23:25:46,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:25:46,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085053555] [2022-07-22 23:25:46,811 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085053555] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:25:46,811 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:25:46,812 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 23:25:46,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257402314] [2022-07-22 23:25:46,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:25:46,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 23:25:46,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:25:46,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 23:25:46,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-22 23:25:46,813 INFO L87 Difference]: Start difference. First operand 25343 states and 35389 transitions. Second operand has 6 states, 6 states have (on average 17.0) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-22 23:25:49,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:25:49,663 INFO L93 Difference]: Finished difference Result 54651 states and 76774 transitions. [2022-07-22 23:25:49,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 23:25:49,664 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 173 [2022-07-22 23:25:49,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:25:49,750 INFO L225 Difference]: With dead ends: 54651 [2022-07-22 23:25:49,750 INFO L226 Difference]: Without dead ends: 29499 [2022-07-22 23:25:49,788 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-22 23:25:49,788 INFO L413 NwaCegarLoop]: 1101 mSDtfsCounter, 657 mSDsluCounter, 2048 mSDsCounter, 0 mSdLazyCounter, 854 mSolverCounterSat, 247 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 722 SdHoareTripleChecker+Valid, 3149 SdHoareTripleChecker+Invalid, 1101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 247 IncrementalHoareTripleChecker+Valid, 854 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-22 23:25:49,789 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [722 Valid, 3149 Invalid, 1101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [247 Valid, 854 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-22 23:25:49,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29499 states. [2022-07-22 23:25:51,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29499 to 27681. [2022-07-22 23:25:51,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27681 states, 23008 states have (on average 1.3939933936022253) internal successors, (32073), 23287 states have internal predecessors, (32073), 3321 states have call successors, (3321), 1402 states have call predecessors, (3321), 1351 states have return successors, (3243), 3198 states have call predecessors, (3243), 3243 states have call successors, (3243) [2022-07-22 23:25:51,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27681 states to 27681 states and 38637 transitions. [2022-07-22 23:25:51,245 INFO L78 Accepts]: Start accepts. Automaton has 27681 states and 38637 transitions. Word has length 173 [2022-07-22 23:25:51,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:25:51,245 INFO L495 AbstractCegarLoop]: Abstraction has 27681 states and 38637 transitions. [2022-07-22 23:25:51,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-22 23:25:51,246 INFO L276 IsEmpty]: Start isEmpty. Operand 27681 states and 38637 transitions. [2022-07-22 23:25:51,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-07-22 23:25:51,252 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:25:51,252 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:25:51,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-07-22 23:25:51,253 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:25:51,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:25:51,253 INFO L85 PathProgramCache]: Analyzing trace with hash 961132940, now seen corresponding path program 1 times [2022-07-22 23:25:51,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:25:51,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786052066] [2022-07-22 23:25:51,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:25:51,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:25:51,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:51,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 23:25:51,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:51,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:25:51,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:51,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-22 23:25:51,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:51,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:25:51,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:51,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 23:25:51,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:51,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:25:51,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:51,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-22 23:25:51,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:51,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:25:51,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:51,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:25:51,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:51,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 23:25:51,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:51,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 23:25:51,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:51,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-07-22 23:25:51,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:51,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:25:51,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:51,669 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2022-07-22 23:25:51,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:25:51,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786052066] [2022-07-22 23:25:51,669 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786052066] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:25:51,669 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:25:51,669 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 23:25:51,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621150201] [2022-07-22 23:25:51,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:25:51,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 23:25:51,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:25:51,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 23:25:51,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-22 23:25:51,671 INFO L87 Difference]: Start difference. First operand 27681 states and 38637 transitions. Second operand has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 3 states have internal predecessors, (104), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-22 23:25:54,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:25:54,556 INFO L93 Difference]: Finished difference Result 59476 states and 83491 transitions. [2022-07-22 23:25:54,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 23:25:54,557 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 3 states have internal predecessors, (104), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 177 [2022-07-22 23:25:54,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:25:54,645 INFO L225 Difference]: With dead ends: 59476 [2022-07-22 23:25:54,646 INFO L226 Difference]: Without dead ends: 31986 [2022-07-22 23:25:54,694 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-22 23:25:54,694 INFO L413 NwaCegarLoop]: 1102 mSDtfsCounter, 994 mSDsluCounter, 1495 mSDsCounter, 0 mSdLazyCounter, 696 mSolverCounterSat, 535 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1059 SdHoareTripleChecker+Valid, 2597 SdHoareTripleChecker+Invalid, 1231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 535 IncrementalHoareTripleChecker+Valid, 696 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-22 23:25:54,694 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1059 Valid, 2597 Invalid, 1231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [535 Valid, 696 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-22 23:25:54,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31986 states. [2022-07-22 23:25:56,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31986 to 30019. [2022-07-22 23:25:56,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30019 states, 24957 states have (on average 1.3932764354690066) internal successors, (34772), 25257 states have internal predecessors, (34772), 3597 states have call successors, (3597), 1518 states have call predecessors, (3597), 1464 states have return successors, (3516), 3468 states have call predecessors, (3516), 3516 states have call successors, (3516) [2022-07-22 23:25:56,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30019 states to 30019 states and 41885 transitions. [2022-07-22 23:25:56,298 INFO L78 Accepts]: Start accepts. Automaton has 30019 states and 41885 transitions. Word has length 177 [2022-07-22 23:25:56,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:25:56,298 INFO L495 AbstractCegarLoop]: Abstraction has 30019 states and 41885 transitions. [2022-07-22 23:25:56,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 3 states have internal predecessors, (104), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-22 23:25:56,299 INFO L276 IsEmpty]: Start isEmpty. Operand 30019 states and 41885 transitions. [2022-07-22 23:25:56,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-07-22 23:25:56,305 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:25:56,306 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:25:56,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-07-22 23:25:56,306 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:25:56,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:25:56,306 INFO L85 PathProgramCache]: Analyzing trace with hash 2059254251, now seen corresponding path program 1 times [2022-07-22 23:25:56,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:25:56,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816840722] [2022-07-22 23:25:56,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:25:56,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:25:56,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:56,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 23:25:56,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:56,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:25:56,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:56,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-22 23:25:56,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:56,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:25:56,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:56,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 23:25:56,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:56,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:25:56,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:56,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-22 23:25:56,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:56,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:25:56,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:56,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:25:56,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:56,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 23:25:56,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:56,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 23:25:56,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:56,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-07-22 23:25:56,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:56,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:25:56,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:56,898 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2022-07-22 23:25:56,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:25:56,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816840722] [2022-07-22 23:25:56,899 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816840722] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:25:56,899 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:25:56,899 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 23:25:56,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189268844] [2022-07-22 23:25:56,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:25:56,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 23:25:56,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:25:56,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 23:25:56,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-22 23:25:56,901 INFO L87 Difference]: Start difference. First operand 30019 states and 41885 transitions. Second operand has 6 states, 6 states have (on average 17.0) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-22 23:25:59,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:25:59,914 INFO L93 Difference]: Finished difference Result 64516 states and 90452 transitions. [2022-07-22 23:25:59,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 23:25:59,915 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 182 [2022-07-22 23:25:59,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:26:00,021 INFO L225 Difference]: With dead ends: 64516 [2022-07-22 23:26:00,021 INFO L226 Difference]: Without dead ends: 34688 [2022-07-22 23:26:00,070 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-22 23:26:00,071 INFO L413 NwaCegarLoop]: 1154 mSDtfsCounter, 635 mSDsluCounter, 2122 mSDsCounter, 0 mSdLazyCounter, 875 mSolverCounterSat, 252 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 701 SdHoareTripleChecker+Valid, 3276 SdHoareTripleChecker+Invalid, 1127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 252 IncrementalHoareTripleChecker+Valid, 875 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-22 23:26:00,071 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [701 Valid, 3276 Invalid, 1127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [252 Valid, 875 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-22 23:26:00,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34688 states. [2022-07-22 23:26:01,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34688 to 32253. [2022-07-22 23:26:01,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32253 states, 26751 states have (on average 1.3906769840379798) internal successors, (37202), 27072 states have internal predecessors, (37202), 3903 states have call successors, (3903), 1660 states have call predecessors, (3903), 1598 states have return successors, (3819), 3763 states have call predecessors, (3819), 3819 states have call successors, (3819) [2022-07-22 23:26:01,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32253 states to 32253 states and 44924 transitions. [2022-07-22 23:26:01,798 INFO L78 Accepts]: Start accepts. Automaton has 32253 states and 44924 transitions. Word has length 182 [2022-07-22 23:26:01,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:26:01,798 INFO L495 AbstractCegarLoop]: Abstraction has 32253 states and 44924 transitions. [2022-07-22 23:26:01,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-22 23:26:01,798 INFO L276 IsEmpty]: Start isEmpty. Operand 32253 states and 44924 transitions. [2022-07-22 23:26:01,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2022-07-22 23:26:01,805 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:26:01,806 INFO L195 NwaCegarLoop]: trace histogram [6, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:26:01,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-07-22 23:26:01,806 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:26:01,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:26:01,807 INFO L85 PathProgramCache]: Analyzing trace with hash -727955283, now seen corresponding path program 1 times [2022-07-22 23:26:01,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:26:01,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858081592] [2022-07-22 23:26:01,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:26:01,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:26:01,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:26:02,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 23:26:02,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:26:02,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:26:02,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:26:02,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-22 23:26:02,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:26:02,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:26:02,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:26:02,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 23:26:02,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:26:02,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:26:02,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:26:02,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-22 23:26:02,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:26:02,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-22 23:26:02,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:26:02,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:26:02,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:26:02,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:26:02,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:26:02,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 23:26:02,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:26:02,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 23:26:02,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:26:02,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-22 23:26:02,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:26:02,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:26:02,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:26:02,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-07-22 23:26:02,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:26:02,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-07-22 23:26:02,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:26:02,190 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2022-07-22 23:26:02,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:26:02,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858081592] [2022-07-22 23:26:02,191 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858081592] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:26:02,191 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:26:02,191 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 23:26:02,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683533207] [2022-07-22 23:26:02,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:26:02,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 23:26:02,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:26:02,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 23:26:02,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-22 23:26:02,192 INFO L87 Difference]: Start difference. First operand 32253 states and 44924 transitions. Second operand has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 4 states have internal predecessors, (123), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-22 23:26:06,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:26:06,882 INFO L93 Difference]: Finished difference Result 91380 states and 127541 transitions. [2022-07-22 23:26:06,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-22 23:26:06,883 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 4 states have internal predecessors, (123), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 187 [2022-07-22 23:26:06,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:26:07,084 INFO L225 Difference]: With dead ends: 91380 [2022-07-22 23:26:07,084 INFO L226 Difference]: Without dead ends: 59318 [2022-07-22 23:26:07,148 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-07-22 23:26:07,148 INFO L413 NwaCegarLoop]: 1192 mSDtfsCounter, 918 mSDsluCounter, 2917 mSDsCounter, 0 mSdLazyCounter, 1329 mSolverCounterSat, 280 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 979 SdHoareTripleChecker+Valid, 4109 SdHoareTripleChecker+Invalid, 1609 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 280 IncrementalHoareTripleChecker+Valid, 1329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-22 23:26:07,148 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [979 Valid, 4109 Invalid, 1609 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [280 Valid, 1329 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-22 23:26:07,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59318 states. [2022-07-22 23:26:09,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59318 to 32415. [2022-07-22 23:26:09,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32415 states, 26913 states have (on average 1.3883253446289896) internal successors, (37364), 27234 states have internal predecessors, (37364), 3903 states have call successors, (3903), 1660 states have call predecessors, (3903), 1598 states have return successors, (3819), 3763 states have call predecessors, (3819), 3819 states have call successors, (3819) [2022-07-22 23:26:09,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32415 states to 32415 states and 45086 transitions. [2022-07-22 23:26:09,224 INFO L78 Accepts]: Start accepts. Automaton has 32415 states and 45086 transitions. Word has length 187 [2022-07-22 23:26:09,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:26:09,225 INFO L495 AbstractCegarLoop]: Abstraction has 32415 states and 45086 transitions. [2022-07-22 23:26:09,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 4 states have internal predecessors, (123), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-22 23:26:09,225 INFO L276 IsEmpty]: Start isEmpty. Operand 32415 states and 45086 transitions. [2022-07-22 23:26:09,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-07-22 23:26:09,233 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:26:09,233 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:26:09,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-07-22 23:26:09,234 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:26:09,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:26:09,234 INFO L85 PathProgramCache]: Analyzing trace with hash -1390103497, now seen corresponding path program 1 times [2022-07-22 23:26:09,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:26:09,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083834478] [2022-07-22 23:26:09,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:26:09,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:26:09,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:26:09,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 23:26:09,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:26:09,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:26:09,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:26:09,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-22 23:26:09,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:26:09,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:26:09,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:26:09,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 23:26:09,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:26:09,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:26:09,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:26:09,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-22 23:26:09,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:26:09,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:26:09,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:26:09,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:26:09,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:26:09,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 23:26:09,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:26:09,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 23:26:09,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:26:09,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-07-22 23:26:09,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:26:09,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:26:09,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:26:09,656 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2022-07-22 23:26:09,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:26:09,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083834478] [2022-07-22 23:26:09,657 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083834478] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:26:09,657 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:26:09,657 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 23:26:09,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564772936] [2022-07-22 23:26:09,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:26:09,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 23:26:09,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:26:09,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 23:26:09,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-22 23:26:09,659 INFO L87 Difference]: Start difference. First operand 32415 states and 45086 transitions. Second operand has 6 states, 6 states have (on average 17.0) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-22 23:26:12,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:26:12,895 INFO L93 Difference]: Finished difference Result 69521 states and 97156 transitions. [2022-07-22 23:26:12,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 23:26:12,896 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 188 [2022-07-22 23:26:12,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:26:13,119 INFO L225 Difference]: With dead ends: 69521 [2022-07-22 23:26:13,119 INFO L226 Difference]: Without dead ends: 37297 [2022-07-22 23:26:13,167 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-22 23:26:13,168 INFO L413 NwaCegarLoop]: 1153 mSDtfsCounter, 805 mSDsluCounter, 1599 mSDsCounter, 0 mSdLazyCounter, 740 mSolverCounterSat, 396 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 871 SdHoareTripleChecker+Valid, 2752 SdHoareTripleChecker+Invalid, 1136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 396 IncrementalHoareTripleChecker+Valid, 740 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-22 23:26:13,168 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [871 Valid, 2752 Invalid, 1136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [396 Valid, 740 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-22 23:26:13,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37297 states. [2022-07-22 23:26:15,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37297 to 34661. [2022-07-22 23:26:15,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34661 states, 28719 states have (on average 1.3860510463456248) internal successors, (39806), 29061 states have internal predecessors, (39806), 4209 states have call successors, (4209), 1802 states have call predecessors, (4209), 1732 states have return successors, (4122), 4058 states have call predecessors, (4122), 4122 states have call successors, (4122) [2022-07-22 23:26:15,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34661 states to 34661 states and 48137 transitions. [2022-07-22 23:26:15,142 INFO L78 Accepts]: Start accepts. Automaton has 34661 states and 48137 transitions. Word has length 188 [2022-07-22 23:26:15,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:26:15,142 INFO L495 AbstractCegarLoop]: Abstraction has 34661 states and 48137 transitions. [2022-07-22 23:26:15,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-22 23:26:15,143 INFO L276 IsEmpty]: Start isEmpty. Operand 34661 states and 48137 transitions. [2022-07-22 23:26:15,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2022-07-22 23:26:15,151 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:26:15,151 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:26:15,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-07-22 23:26:15,152 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:26:15,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:26:15,152 INFO L85 PathProgramCache]: Analyzing trace with hash -1043366015, now seen corresponding path program 1 times [2022-07-22 23:26:15,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:26:15,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216702063] [2022-07-22 23:26:15,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:26:15,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:26:15,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:26:15,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 23:26:15,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:26:15,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:26:15,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:26:15,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-22 23:26:15,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:26:15,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:26:15,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:26:15,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 23:26:15,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:26:15,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:26:15,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:26:15,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-22 23:26:15,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:26:15,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:26:15,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:26:15,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:26:15,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:26:15,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 23:26:15,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:26:15,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 23:26:15,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:26:15,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-22 23:26:15,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:26:15,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-07-22 23:26:15,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:26:15,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-22 23:26:15,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:26:15,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-07-22 23:26:15,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:26:15,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:26:15,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:26:15,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:26:15,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:26:15,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:26:15,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:26:15,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-07-22 23:26:15,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:26:15,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:26:15,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:26:15,696 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2022-07-22 23:26:15,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:26:15,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216702063] [2022-07-22 23:26:15,697 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216702063] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:26:15,697 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:26:15,697 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-22 23:26:15,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677751991] [2022-07-22 23:26:15,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:26:15,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-22 23:26:15,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:26:15,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-22 23:26:15,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-07-22 23:26:15,699 INFO L87 Difference]: Start difference. First operand 34661 states and 48137 transitions. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 6 states have internal predecessors, (113), 2 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-22 23:26:20,087 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:26:22,120 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []