./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--amc6821.ko-main.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 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--amc6821.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 b4ab5f9a609d808b1cc730f70e246b6cee2b77e8055db2b71a14eb45eb69a8df --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 23:47:14,515 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 23:47:14,516 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 23:47:14,541 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 23:47:14,541 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 23:47:14,542 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 23:47:14,544 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 23:47:14,548 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 23:47:14,549 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 23:47:14,554 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 23:47:14,555 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 23:47:14,557 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 23:47:14,557 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 23:47:14,559 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 23:47:14,560 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 23:47:14,563 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 23:47:14,564 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 23:47:14,565 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 23:47:14,566 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 23:47:14,570 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 23:47:14,571 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 23:47:14,572 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 23:47:14,573 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 23:47:14,573 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 23:47:14,574 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 23:47:14,579 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 23:47:14,580 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 23:47:14,582 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 23:47:14,583 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 23:47:14,583 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 23:47:14,584 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 23:47:14,585 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 23:47:14,585 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 23:47:14,586 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 23:47:14,587 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 23:47:14,587 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 23:47:14,587 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 23:47:14,588 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 23:47:14,588 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 23:47:14,588 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 23:47:14,589 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 23:47:14,590 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 23:47:14,590 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-13 23:47:14,604 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 23:47:14,610 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 23:47:14,611 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 23:47:14,611 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 23:47:14,611 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 23:47:14,612 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 23:47:14,612 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 23:47:14,612 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 23:47:14,612 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 23:47:14,612 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 23:47:14,613 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 23:47:14,613 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 23:47:14,613 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 23:47:14,613 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 23:47:14,613 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 23:47:14,614 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 23:47:14,614 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 23:47:14,614 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 23:47:14,614 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 23:47:14,614 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 23:47:14,615 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 23:47:14,615 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 23:47:14,615 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 23:47:14,615 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 23:47:14,615 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 23:47:14,615 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 23:47:14,615 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 23:47:14,615 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 23:47:14,615 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 23:47:14,615 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 23:47:14,615 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b4ab5f9a609d808b1cc730f70e246b6cee2b77e8055db2b71a14eb45eb69a8df [2022-07-13 23:47:14,791 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 23:47:14,812 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 23:47:14,814 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 23:47:14,815 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 23:47:14,815 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 23:47:14,820 INFO L432 ainManager$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--amc6821.ko-main.cil.out.i [2022-07-13 23:47:14,877 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/49e942449/b40bd2b555ac4416bf395e702f7cb6cf/FLAGc14864a96 [2022-07-13 23:47:15,392 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 23:47:15,395 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--amc6821.ko-main.cil.out.i [2022-07-13 23:47:15,429 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/49e942449/b40bd2b555ac4416bf395e702f7cb6cf/FLAGc14864a96 [2022-07-13 23:47:15,843 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/49e942449/b40bd2b555ac4416bf395e702f7cb6cf [2022-07-13 23:47:15,845 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 23:47:15,846 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 23:47:15,847 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 23:47:15,847 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 23:47:15,850 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 23:47:15,850 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 11:47:15" (1/1) ... [2022-07-13 23:47:15,851 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45113de0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:47:15, skipping insertion in model container [2022-07-13 23:47:15,851 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 11:47:15" (1/1) ... [2022-07-13 23:47:15,855 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 23:47:15,914 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 23:47:16,492 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--amc6821.ko-main.cil.out.i[139464,139477] [2022-07-13 23:47:16,532 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 23:47:16,569 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 23:47:16,708 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--amc6821.ko-main.cil.out.i[139464,139477] [2022-07-13 23:47:16,715 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 23:47:16,827 INFO L208 MainTranslator]: Completed translation [2022-07-13 23:47:16,828 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:47:16 WrapperNode [2022-07-13 23:47:16,829 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 23:47:16,830 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 23:47:16,830 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 23:47:16,830 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 23:47:16,835 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:47:16" (1/1) ... [2022-07-13 23:47:16,892 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:47:16" (1/1) ... [2022-07-13 23:47:16,995 INFO L137 Inliner]: procedures = 138, calls = 1364, calls flagged for inlining = 60, calls inlined = 52, statements flattened = 3772 [2022-07-13 23:47:16,996 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 23:47:16,997 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 23:47:16,997 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 23:47:16,997 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 23:47:17,003 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:47:16" (1/1) ... [2022-07-13 23:47:17,003 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:47:16" (1/1) ... [2022-07-13 23:47:17,021 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:47:16" (1/1) ... [2022-07-13 23:47:17,021 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:47:16" (1/1) ... [2022-07-13 23:47:17,104 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:47:16" (1/1) ... [2022-07-13 23:47:17,114 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:47:16" (1/1) ... [2022-07-13 23:47:17,135 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:47:16" (1/1) ... [2022-07-13 23:47:17,163 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 23:47:17,165 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 23:47:17,165 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 23:47:17,165 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 23:47:17,166 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:47:16" (1/1) ... [2022-07-13 23:47:17,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 23:47:17,186 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 23:47:17,201 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) [2022-07-13 23:47:17,206 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 [2022-07-13 23:47:17,235 INFO L130 BoogieDeclarations]: Found specification of procedure get_pwm1_auto_point_pwm [2022-07-13 23:47:17,235 INFO L138 BoogieDeclarations]: Found implementation of procedure get_pwm1_auto_point_pwm [2022-07-13 23:47:17,236 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-13 23:47:17,236 INFO L130 BoogieDeclarations]: Found specification of procedure get_fan [2022-07-13 23:47:17,236 INFO L138 BoogieDeclarations]: Found implementation of procedure get_fan [2022-07-13 23:47:17,236 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_remove_group [2022-07-13 23:47:17,236 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_remove_group [2022-07-13 23:47:17,236 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_get_clientdata [2022-07-13 23:47:17,236 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_get_clientdata [2022-07-13 23:47:17,236 INFO L130 BoogieDeclarations]: Found specification of procedure amc6821_detect [2022-07-13 23:47:17,237 INFO L138 BoogieDeclarations]: Found implementation of procedure amc6821_detect [2022-07-13 23:47:17,237 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-07-13 23:47:17,237 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-07-13 23:47:17,237 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-13 23:47:17,237 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-07-13 23:47:17,237 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-07-13 23:47:17,237 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-07-13 23:47:17,237 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-07-13 23:47:17,237 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-07-13 23:47:17,238 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-07-13 23:47:17,238 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-13 23:47:17,238 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_update_lock_of_amc6821_data [2022-07-13 23:47:17,238 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_update_lock_of_amc6821_data [2022-07-13 23:47:17,238 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-07-13 23:47:17,238 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-07-13 23:47:17,238 INFO L130 BoogieDeclarations]: Found specification of procedure get_temp_auto_point_temp [2022-07-13 23:47:17,238 INFO L138 BoogieDeclarations]: Found implementation of procedure get_temp_auto_point_temp [2022-07-13 23:47:17,239 INFO L130 BoogieDeclarations]: Found specification of procedure set_slope_register [2022-07-13 23:47:17,239 INFO L138 BoogieDeclarations]: Found implementation of procedure set_slope_register [2022-07-13 23:47:17,239 INFO L130 BoogieDeclarations]: Found specification of procedure get_temp_alarm [2022-07-13 23:47:17,239 INFO L138 BoogieDeclarations]: Found implementation of procedure get_temp_alarm [2022-07-13 23:47:17,239 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 23:47:17,239 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-13 23:47:17,239 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-13 23:47:17,239 INFO L130 BoogieDeclarations]: Found specification of procedure SENSORS_LIMIT [2022-07-13 23:47:17,240 INFO L138 BoogieDeclarations]: Found implementation of procedure SENSORS_LIMIT [2022-07-13 23:47:17,240 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_smbus_read_byte_data [2022-07-13 23:47:17,240 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_smbus_read_byte_data [2022-07-13 23:47:17,240 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-13 23:47:17,240 INFO L130 BoogieDeclarations]: Found specification of procedure amc6821_update_device [2022-07-13 23:47:17,240 INFO L138 BoogieDeclarations]: Found implementation of procedure amc6821_update_device [2022-07-13 23:47:17,240 INFO L130 BoogieDeclarations]: Found specification of procedure kstrtol [2022-07-13 23:47:17,240 INFO L138 BoogieDeclarations]: Found implementation of procedure kstrtol [2022-07-13 23:47:17,240 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-13 23:47:17,241 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-13 23:47:17,241 INFO L130 BoogieDeclarations]: Found specification of procedure get_temp [2022-07-13 23:47:17,241 INFO L138 BoogieDeclarations]: Found implementation of procedure get_temp [2022-07-13 23:47:17,241 INFO L130 BoogieDeclarations]: Found specification of procedure set_temp [2022-07-13 23:47:17,241 INFO L138 BoogieDeclarations]: Found implementation of procedure set_temp [2022-07-13 23:47:17,241 INFO L130 BoogieDeclarations]: Found specification of procedure set_fan [2022-07-13 23:47:17,241 INFO L138 BoogieDeclarations]: Found implementation of procedure set_fan [2022-07-13 23:47:17,241 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 23:47:17,241 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_smbus_write_byte_data [2022-07-13 23:47:17,242 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_smbus_write_byte_data [2022-07-13 23:47:17,242 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_update_lock_of_amc6821_data [2022-07-13 23:47:17,242 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_update_lock_of_amc6821_data [2022-07-13 23:47:17,242 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 23:47:17,242 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 23:47:17,242 INFO L130 BoogieDeclarations]: Found specification of procedure set_temp_auto_point_temp [2022-07-13 23:47:17,242 INFO L138 BoogieDeclarations]: Found implementation of procedure set_temp_auto_point_temp [2022-07-13 23:47:17,242 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-07-13 23:47:17,243 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-07-13 23:47:17,673 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 23:47:17,674 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 23:47:19,558 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 23:47:19,567 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 23:47:19,567 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-13 23:47:19,569 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 11:47:19 BoogieIcfgContainer [2022-07-13 23:47:19,569 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 23:47:19,570 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 23:47:19,571 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 23:47:19,573 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 23:47:19,573 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 11:47:15" (1/3) ... [2022-07-13 23:47:19,573 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49cd5537 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 11:47:19, skipping insertion in model container [2022-07-13 23:47:19,574 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:47:16" (2/3) ... [2022-07-13 23:47:19,574 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49cd5537 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 11:47:19, skipping insertion in model container [2022-07-13 23:47:19,574 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 11:47:19" (3/3) ... [2022-07-13 23:47:19,575 INFO L111 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--hwmon--amc6821.ko-main.cil.out.i [2022-07-13 23:47:19,583 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 23:47:19,584 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 23:47:19,622 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 23:47:19,626 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@5e96e75a, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@33eb559d [2022-07-13 23:47:19,626 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-13 23:47:19,632 INFO L276 IsEmpty]: Start isEmpty. Operand has 935 states, 738 states have (on average 1.570460704607046) internal successors, (1159), 745 states have internal predecessors, (1159), 170 states have call successors, (170), 25 states have call predecessors, (170), 25 states have return successors, (170), 170 states have call predecessors, (170), 170 states have call successors, (170) [2022-07-13 23:47:19,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-07-13 23:47:19,640 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 23:47:19,641 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] [2022-07-13 23:47:19,641 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 23:47:19,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 23:47:19,644 INFO L85 PathProgramCache]: Analyzing trace with hash 2093746445, now seen corresponding path program 1 times [2022-07-13 23:47:19,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 23:47:19,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381949095] [2022-07-13 23:47:19,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 23:47:19,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 23:47:19,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:47:20,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-13 23:47:20,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:47:20,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:47:20,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:47:20,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 23:47:20,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 23:47:20,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381949095] [2022-07-13 23:47:20,033 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381949095] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 23:47:20,033 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 23:47:20,034 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 23:47:20,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858591398] [2022-07-13 23:47:20,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 23:47:20,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 23:47:20,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 23:47:20,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 23:47:20,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 23:47:20,061 INFO L87 Difference]: Start difference. First operand has 935 states, 738 states have (on average 1.570460704607046) internal successors, (1159), 745 states have internal predecessors, (1159), 170 states have call successors, (170), 25 states have call predecessors, (170), 25 states have return successors, (170), 170 states have call predecessors, (170), 170 states have call successors, (170) Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 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) [2022-07-13 23:47:21,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 23:47:21,138 INFO L93 Difference]: Finished difference Result 2950 states and 4940 transitions. [2022-07-13 23:47:21,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 23:47:21,140 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 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 30 [2022-07-13 23:47:21,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 23:47:21,169 INFO L225 Difference]: With dead ends: 2950 [2022-07-13 23:47:21,170 INFO L226 Difference]: Without dead ends: 2010 [2022-07-13 23:47:21,190 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 [2022-07-13 23:47:21,192 INFO L413 NwaCegarLoop]: 1707 mSDtfsCounter, 1528 mSDsluCounter, 2458 mSDsCounter, 0 mSdLazyCounter, 558 mSolverCounterSat, 401 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1645 SdHoareTripleChecker+Valid, 4165 SdHoareTripleChecker+Invalid, 959 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 401 IncrementalHoareTripleChecker+Valid, 558 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-13 23:47:21,193 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1645 Valid, 4165 Invalid, 959 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [401 Valid, 558 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-13 23:47:21,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2010 states. [2022-07-13 23:47:21,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2010 to 1833. [2022-07-13 23:47:21,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1833 states, 1451 states have (on average 1.4624396967608546) internal successors, (2122), 1456 states have internal predecessors, (2122), 333 states have call successors, (333), 49 states have call predecessors, (333), 48 states have return successors, (327), 327 states have call predecessors, (327), 327 states have call successors, (327) [2022-07-13 23:47:21,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1833 states to 1833 states and 2782 transitions. [2022-07-13 23:47:21,356 INFO L78 Accepts]: Start accepts. Automaton has 1833 states and 2782 transitions. Word has length 30 [2022-07-13 23:47:21,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 23:47:21,356 INFO L495 AbstractCegarLoop]: Abstraction has 1833 states and 2782 transitions. [2022-07-13 23:47:21,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 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) [2022-07-13 23:47:21,356 INFO L276 IsEmpty]: Start isEmpty. Operand 1833 states and 2782 transitions. [2022-07-13 23:47:21,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-07-13 23:47:21,358 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 23:47:21,358 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 23:47:21,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 23:47:21,359 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 23:47:21,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 23:47:21,360 INFO L85 PathProgramCache]: Analyzing trace with hash 1170799053, now seen corresponding path program 1 times [2022-07-13 23:47:21,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 23:47:21,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699653459] [2022-07-13 23:47:21,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 23:47:21,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 23:47:21,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:47:21,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-13 23:47:21,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:47:21,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:47:21,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:47:21,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 23:47:21,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 23:47:21,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699653459] [2022-07-13 23:47:21,485 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699653459] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 23:47:21,485 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 23:47:21,485 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 23:47:21,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581202043] [2022-07-13 23:47:21,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 23:47:21,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 23:47:21,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 23:47:21,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 23:47:21,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 23:47:21,487 INFO L87 Difference]: Start difference. First operand 1833 states and 2782 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-13 23:47:22,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 23:47:22,589 INFO L93 Difference]: Finished difference Result 5797 states and 8876 transitions. [2022-07-13 23:47:22,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 23:47:22,589 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), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 36 [2022-07-13 23:47:22,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 23:47:22,605 INFO L225 Difference]: With dead ends: 5797 [2022-07-13 23:47:22,605 INFO L226 Difference]: Without dead ends: 3967 [2022-07-13 23:47:22,610 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 [2022-07-13 23:47:22,611 INFO L413 NwaCegarLoop]: 1714 mSDtfsCounter, 1515 mSDsluCounter, 2456 mSDsCounter, 0 mSdLazyCounter, 562 mSolverCounterSat, 399 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1632 SdHoareTripleChecker+Valid, 4170 SdHoareTripleChecker+Invalid, 961 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 399 IncrementalHoareTripleChecker+Valid, 562 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-13 23:47:22,611 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1632 Valid, 4170 Invalid, 961 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [399 Valid, 562 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-13 23:47:22,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3967 states. [2022-07-13 23:47:22,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3967 to 3628. [2022-07-13 23:47:22,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3628 states, 2875 states have (on average 1.4615652173913043) internal successors, (4202), 2880 states have internal predecessors, (4202), 656 states have call successors, (656), 97 states have call predecessors, (656), 96 states have return successors, (650), 650 states have call predecessors, (650), 650 states have call successors, (650) [2022-07-13 23:47:22,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3628 states to 3628 states and 5508 transitions. [2022-07-13 23:47:22,699 INFO L78 Accepts]: Start accepts. Automaton has 3628 states and 5508 transitions. Word has length 36 [2022-07-13 23:47:22,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 23:47:22,699 INFO L495 AbstractCegarLoop]: Abstraction has 3628 states and 5508 transitions. [2022-07-13 23:47:22,699 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), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-13 23:47:22,699 INFO L276 IsEmpty]: Start isEmpty. Operand 3628 states and 5508 transitions. [2022-07-13 23:47:22,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-07-13 23:47:22,701 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 23:47:22,701 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] [2022-07-13 23:47:22,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 23:47:22,701 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 23:47:22,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 23:47:22,702 INFO L85 PathProgramCache]: Analyzing trace with hash -2057944644, now seen corresponding path program 1 times [2022-07-13 23:47:22,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 23:47:22,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600629232] [2022-07-13 23:47:22,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 23:47:22,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 23:47:22,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:47:22,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 23:47:22,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:47:22,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:47:22,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:47:22,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 23:47:22,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 23:47:22,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600629232] [2022-07-13 23:47:22,810 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600629232] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 23:47:22,810 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 23:47:22,810 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 23:47:22,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023548145] [2022-07-13 23:47:22,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 23:47:22,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 23:47:22,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 23:47:22,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 23:47:22,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 23:47:22,812 INFO L87 Difference]: Start difference. First operand 3628 states and 5508 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-13 23:47:23,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 23:47:23,822 INFO L93 Difference]: Finished difference Result 11502 states and 17614 transitions. [2022-07-13 23:47:23,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 23:47:23,823 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 34 [2022-07-13 23:47:23,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 23:47:23,858 INFO L225 Difference]: With dead ends: 11502 [2022-07-13 23:47:23,859 INFO L226 Difference]: Without dead ends: 7877 [2022-07-13 23:47:23,874 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 [2022-07-13 23:47:23,877 INFO L413 NwaCegarLoop]: 1730 mSDtfsCounter, 1523 mSDsluCounter, 2474 mSDsCounter, 0 mSdLazyCounter, 558 mSolverCounterSat, 398 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1640 SdHoareTripleChecker+Valid, 4204 SdHoareTripleChecker+Invalid, 956 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 398 IncrementalHoareTripleChecker+Valid, 558 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-13 23:47:23,878 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1640 Valid, 4204 Invalid, 956 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [398 Valid, 558 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-13 23:47:23,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7877 states. [2022-07-13 23:47:24,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7877 to 7214. [2022-07-13 23:47:24,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7214 states, 5719 states have (on average 1.4607448854694878) internal successors, (8354), 5724 states have internal predecessors, (8354), 1302 states have call successors, (1302), 193 states have call predecessors, (1302), 192 states have return successors, (1296), 1296 states have call predecessors, (1296), 1296 states have call successors, (1296) [2022-07-13 23:47:24,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7214 states to 7214 states and 10952 transitions. [2022-07-13 23:47:24,134 INFO L78 Accepts]: Start accepts. Automaton has 7214 states and 10952 transitions. Word has length 34 [2022-07-13 23:47:24,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 23:47:24,135 INFO L495 AbstractCegarLoop]: Abstraction has 7214 states and 10952 transitions. [2022-07-13 23:47:24,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-13 23:47:24,135 INFO L276 IsEmpty]: Start isEmpty. Operand 7214 states and 10952 transitions. [2022-07-13 23:47:24,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-07-13 23:47:24,138 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 23:47:24,138 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 23:47:24,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 23:47:24,139 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 23:47:24,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 23:47:24,139 INFO L85 PathProgramCache]: Analyzing trace with hash -880553717, now seen corresponding path program 1 times [2022-07-13 23:47:24,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 23:47:24,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701513593] [2022-07-13 23:47:24,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 23:47:24,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 23:47:24,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:47:24,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-13 23:47:24,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:47:24,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:47:24,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:47:24,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 23:47:24,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 23:47:24,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701513593] [2022-07-13 23:47:24,292 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701513593] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 23:47:24,294 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 23:47:24,294 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 23:47:24,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335000479] [2022-07-13 23:47:24,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 23:47:24,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 23:47:24,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 23:47:24,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 23:47:24,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 23:47:24,296 INFO L87 Difference]: Start difference. First operand 7214 states and 10952 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-13 23:47:25,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 23:47:25,683 INFO L93 Difference]: Finished difference Result 22852 states and 34986 transitions. [2022-07-13 23:47:25,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 23:47:25,684 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), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 36 [2022-07-13 23:47:25,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 23:47:25,757 INFO L225 Difference]: With dead ends: 22852 [2022-07-13 23:47:25,757 INFO L226 Difference]: Without dead ends: 15641 [2022-07-13 23:47:25,784 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 [2022-07-13 23:47:25,789 INFO L413 NwaCegarLoop]: 1740 mSDtfsCounter, 1514 mSDsluCounter, 2479 mSDsCounter, 0 mSdLazyCounter, 562 mSolverCounterSat, 396 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1631 SdHoareTripleChecker+Valid, 4219 SdHoareTripleChecker+Invalid, 958 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 396 IncrementalHoareTripleChecker+Valid, 562 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-13 23:47:25,790 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1631 Valid, 4219 Invalid, 958 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [396 Valid, 562 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-13 23:47:25,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15641 states. [2022-07-13 23:47:26,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15641 to 14330. [2022-07-13 23:47:26,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14330 states, 11363 states have (on average 1.4592977206723576) internal successors, (16582), 11368 states have internal predecessors, (16582), 2582 states have call successors, (2582), 385 states have call predecessors, (2582), 384 states have return successors, (2576), 2576 states have call predecessors, (2576), 2576 states have call successors, (2576) [2022-07-13 23:47:26,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14330 states to 14330 states and 21740 transitions. [2022-07-13 23:47:26,266 INFO L78 Accepts]: Start accepts. Automaton has 14330 states and 21740 transitions. Word has length 36 [2022-07-13 23:47:26,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 23:47:26,266 INFO L495 AbstractCegarLoop]: Abstraction has 14330 states and 21740 transitions. [2022-07-13 23:47:26,267 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), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-13 23:47:26,267 INFO L276 IsEmpty]: Start isEmpty. Operand 14330 states and 21740 transitions. [2022-07-13 23:47:26,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-07-13 23:47:26,269 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 23:47:26,269 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] [2022-07-13 23:47:26,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-13 23:47:26,269 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 23:47:26,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 23:47:26,270 INFO L85 PathProgramCache]: Analyzing trace with hash 978092325, now seen corresponding path program 1 times [2022-07-13 23:47:26,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 23:47:26,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506159756] [2022-07-13 23:47:26,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 23:47:26,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 23:47:26,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:47:26,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 23:47:26,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:47:26,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:47:26,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:47:26,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 23:47:26,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 23:47:26,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506159756] [2022-07-13 23:47:26,396 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506159756] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 23:47:26,396 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 23:47:26,396 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 23:47:26,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799343560] [2022-07-13 23:47:26,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 23:47:26,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 23:47:26,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 23:47:26,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 23:47:26,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 23:47:26,397 INFO L87 Difference]: Start difference. First operand 14330 states and 21740 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 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) [2022-07-13 23:47:27,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 23:47:27,964 INFO L93 Difference]: Finished difference Result 45448 states and 69534 transitions. [2022-07-13 23:47:27,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 23:47:27,964 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 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 29 [2022-07-13 23:47:27,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 23:47:28,059 INFO L225 Difference]: With dead ends: 45448 [2022-07-13 23:47:28,059 INFO L226 Difference]: Without dead ends: 31121 [2022-07-13 23:47:28,108 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 [2022-07-13 23:47:28,109 INFO L413 NwaCegarLoop]: 1838 mSDtfsCounter, 1523 mSDsluCounter, 2572 mSDsCounter, 0 mSdLazyCounter, 558 mSolverCounterSat, 388 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1640 SdHoareTripleChecker+Valid, 4410 SdHoareTripleChecker+Invalid, 946 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 388 IncrementalHoareTripleChecker+Valid, 558 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-13 23:47:28,109 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1640 Valid, 4410 Invalid, 946 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [388 Valid, 558 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-13 23:47:28,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31121 states. [2022-07-13 23:47:29,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31121 to 28514. [2022-07-13 23:47:29,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28514 states, 22603 states have (on average 1.4581250276511968) internal successors, (32958), 22608 states have internal predecessors, (32958), 5142 states have call successors, (5142), 769 states have call predecessors, (5142), 768 states have return successors, (5136), 5136 states have call predecessors, (5136), 5136 states have call successors, (5136) [2022-07-13 23:47:29,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28514 states to 28514 states and 43236 transitions. [2022-07-13 23:47:29,377 INFO L78 Accepts]: Start accepts. Automaton has 28514 states and 43236 transitions. Word has length 29 [2022-07-13 23:47:29,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 23:47:29,377 INFO L495 AbstractCegarLoop]: Abstraction has 28514 states and 43236 transitions. [2022-07-13 23:47:29,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 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) [2022-07-13 23:47:29,378 INFO L276 IsEmpty]: Start isEmpty. Operand 28514 states and 43236 transitions. [2022-07-13 23:47:29,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-07-13 23:47:29,379 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 23:47:29,379 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] [2022-07-13 23:47:29,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-13 23:47:29,379 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 23:47:29,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 23:47:29,380 INFO L85 PathProgramCache]: Analyzing trace with hash -758457314, now seen corresponding path program 1 times [2022-07-13 23:47:29,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 23:47:29,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576845977] [2022-07-13 23:47:29,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 23:47:29,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 23:47:29,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:47:29,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-13 23:47:29,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:47:29,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:47:29,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:47:29,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 23:47:29,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 23:47:29,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576845977] [2022-07-13 23:47:29,851 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576845977] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 23:47:29,851 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 23:47:29,851 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 23:47:29,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858820078] [2022-07-13 23:47:29,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 23:47:29,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 23:47:29,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 23:47:29,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 23:47:29,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 23:47:29,853 INFO L87 Difference]: Start difference. First operand 28514 states and 43236 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-13 23:47:31,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 23:47:31,718 INFO L93 Difference]: Finished difference Result 90528 states and 138438 transitions. [2022-07-13 23:47:31,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 23:47:31,718 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 33 [2022-07-13 23:47:31,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 23:47:32,114 INFO L225 Difference]: With dead ends: 90528 [2022-07-13 23:47:32,114 INFO L226 Difference]: Without dead ends: 62017 [2022-07-13 23:47:32,184 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 [2022-07-13 23:47:32,185 INFO L413 NwaCegarLoop]: 1852 mSDtfsCounter, 1524 mSDsluCounter, 2584 mSDsCounter, 0 mSdLazyCounter, 559 mSolverCounterSat, 387 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1641 SdHoareTripleChecker+Valid, 4436 SdHoareTripleChecker+Invalid, 946 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 387 IncrementalHoareTripleChecker+Valid, 559 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-13 23:47:32,186 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1641 Valid, 4436 Invalid, 946 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [387 Valid, 559 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-13 23:47:32,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62017 states. [2022-07-13 23:47:33,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62017 to 56818. [2022-07-13 23:47:33,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56818 states, 45035 states have (on average 1.45695570112135) internal successors, (65614), 45040 states have internal predecessors, (65614), 10246 states have call successors, (10246), 1537 states have call predecessors, (10246), 1536 states have return successors, (10240), 10240 states have call predecessors, (10240), 10240 states have call successors, (10240) [2022-07-13 23:47:33,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56818 states to 56818 states and 86100 transitions. [2022-07-13 23:47:33,928 INFO L78 Accepts]: Start accepts. Automaton has 56818 states and 86100 transitions. Word has length 33 [2022-07-13 23:47:33,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 23:47:33,929 INFO L495 AbstractCegarLoop]: Abstraction has 56818 states and 86100 transitions. [2022-07-13 23:47:33,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-13 23:47:33,929 INFO L276 IsEmpty]: Start isEmpty. Operand 56818 states and 86100 transitions. [2022-07-13 23:47:33,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-07-13 23:47:33,930 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 23:47:33,931 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] [2022-07-13 23:47:33,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-13 23:47:33,932 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 23:47:33,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 23:47:33,933 INFO L85 PathProgramCache]: Analyzing trace with hash 1936448029, now seen corresponding path program 1 times [2022-07-13 23:47:33,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 23:47:33,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126899855] [2022-07-13 23:47:33,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 23:47:33,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 23:47:34,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:47:34,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-13 23:47:34,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:47:34,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:47:34,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:47:34,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 23:47:34,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 23:47:34,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126899855] [2022-07-13 23:47:34,240 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126899855] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 23:47:34,240 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 23:47:34,240 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 23:47:34,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185242709] [2022-07-13 23:47:34,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 23:47:34,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 23:47:34,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 23:47:34,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 23:47:34,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 23:47:34,242 INFO L87 Difference]: Start difference. First operand 56818 states and 86100 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-13 23:47:37,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 23:47:37,312 INFO L93 Difference]: Finished difference Result 180432 states and 275702 transitions. [2022-07-13 23:47:37,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 23:47:37,313 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 30 [2022-07-13 23:47:37,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 23:47:37,955 INFO L225 Difference]: With dead ends: 180432 [2022-07-13 23:47:37,955 INFO L226 Difference]: Without dead ends: 123617 [2022-07-13 23:47:38,121 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 [2022-07-13 23:47:38,123 INFO L413 NwaCegarLoop]: 1861 mSDtfsCounter, 1527 mSDsluCounter, 2593 mSDsCounter, 0 mSdLazyCounter, 558 mSolverCounterSat, 386 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1644 SdHoareTripleChecker+Valid, 4454 SdHoareTripleChecker+Invalid, 944 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 386 IncrementalHoareTripleChecker+Valid, 558 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-13 23:47:38,123 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1644 Valid, 4454 Invalid, 944 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [386 Valid, 558 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-13 23:47:38,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123617 states. [2022-07-13 23:47:40,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123617 to 113234. [2022-07-13 23:47:41,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113234 states, 89739 states have (on average 1.4557550228997427) internal successors, (130638), 89744 states have internal predecessors, (130638), 20422 states have call successors, (20422), 3073 states have call predecessors, (20422), 3072 states have return successors, (20416), 20416 states have call predecessors, (20416), 20416 states have call successors, (20416) [2022-07-13 23:47:41,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113234 states to 113234 states and 171476 transitions. [2022-07-13 23:47:41,420 INFO L78 Accepts]: Start accepts. Automaton has 113234 states and 171476 transitions. Word has length 30 [2022-07-13 23:47:41,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 23:47:41,421 INFO L495 AbstractCegarLoop]: Abstraction has 113234 states and 171476 transitions. [2022-07-13 23:47:41,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-13 23:47:41,421 INFO L276 IsEmpty]: Start isEmpty. Operand 113234 states and 171476 transitions. [2022-07-13 23:47:41,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-07-13 23:47:41,423 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 23:47:41,425 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 23:47:41,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-13 23:47:41,425 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 23:47:41,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 23:47:41,426 INFO L85 PathProgramCache]: Analyzing trace with hash 1266288340, now seen corresponding path program 1 times [2022-07-13 23:47:41,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 23:47:41,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676470098] [2022-07-13 23:47:41,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 23:47:41,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 23:47:41,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:47:41,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-13 23:47:41,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:47:41,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:47:41,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:47:41,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 23:47:41,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 23:47:41,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676470098] [2022-07-13 23:47:41,555 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676470098] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 23:47:41,555 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 23:47:41,555 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 23:47:41,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202360206] [2022-07-13 23:47:41,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 23:47:41,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 23:47:41,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 23:47:41,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 23:47:41,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 23:47:41,557 INFO L87 Difference]: Start difference. First operand 113234 states and 171476 transitions. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-13 23:47:47,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 23:47:47,384 INFO L93 Difference]: Finished difference Result 359152 states and 548214 transitions. [2022-07-13 23:47:47,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 23:47:47,384 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 40 [2022-07-13 23:47:47,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 23:47:49,066 INFO L225 Difference]: With dead ends: 359152 [2022-07-13 23:47:49,067 INFO L226 Difference]: Without dead ends: 245921 [2022-07-13 23:47:49,382 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 [2022-07-13 23:47:49,383 INFO L413 NwaCegarLoop]: 1870 mSDtfsCounter, 1511 mSDsluCounter, 2598 mSDsCounter, 0 mSdLazyCounter, 561 mSolverCounterSat, 384 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1628 SdHoareTripleChecker+Valid, 4468 SdHoareTripleChecker+Invalid, 945 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 384 IncrementalHoareTripleChecker+Valid, 561 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-13 23:47:49,383 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1628 Valid, 4468 Invalid, 945 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [384 Valid, 561 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-13 23:47:49,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245921 states. [2022-07-13 23:47:55,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245921 to 225170. [2022-07-13 23:47:55,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225170 states, 178443 states have (on average 1.4540777727341505) internal successors, (259470), 178448 states have internal predecessors, (259470), 40582 states have call successors, (40582), 6145 states have call predecessors, (40582), 6144 states have return successors, (40576), 40576 states have call predecessors, (40576), 40576 states have call successors, (40576) [2022-07-13 23:47:56,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225170 states to 225170 states and 340628 transitions. [2022-07-13 23:47:56,414 INFO L78 Accepts]: Start accepts. Automaton has 225170 states and 340628 transitions. Word has length 40 [2022-07-13 23:47:56,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 23:47:56,415 INFO L495 AbstractCegarLoop]: Abstraction has 225170 states and 340628 transitions. [2022-07-13 23:47:56,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-13 23:47:56,416 INFO L276 IsEmpty]: Start isEmpty. Operand 225170 states and 340628 transitions. [2022-07-13 23:47:56,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-07-13 23:47:56,417 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 23:47:56,417 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 23:47:56,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-13 23:47:56,418 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 23:47:56,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 23:47:56,418 INFO L85 PathProgramCache]: Analyzing trace with hash -1345085814, now seen corresponding path program 1 times [2022-07-13 23:47:56,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 23:47:56,418 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551664634] [2022-07-13 23:47:56,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 23:47:56,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 23:47:56,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:47:56,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-13 23:47:56,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:47:56,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:47:56,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:47:56,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 23:47:56,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 23:47:56,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551664634] [2022-07-13 23:47:56,527 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551664634] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 23:47:56,527 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 23:47:56,528 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 23:47:56,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891965268] [2022-07-13 23:47:56,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 23:47:56,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 23:47:56,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 23:47:56,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 23:47:56,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 23:47:56,529 INFO L87 Difference]: Start difference. First operand 225170 states and 340628 transitions. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-13 23:48:07,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 23:48:07,278 INFO L93 Difference]: Finished difference Result 714416 states and 1089206 transitions. [2022-07-13 23:48:07,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 23:48:07,279 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 39 [2022-07-13 23:48:07,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 23:48:10,194 INFO L225 Difference]: With dead ends: 714416 [2022-07-13 23:48:10,195 INFO L226 Difference]: Without dead ends: 489249 [2022-07-13 23:48:11,295 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 [2022-07-13 23:48:11,295 INFO L413 NwaCegarLoop]: 1886 mSDtfsCounter, 1512 mSDsluCounter, 2612 mSDsCounter, 0 mSdLazyCounter, 561 mSolverCounterSat, 382 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1629 SdHoareTripleChecker+Valid, 4498 SdHoareTripleChecker+Invalid, 943 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 382 IncrementalHoareTripleChecker+Valid, 561 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-13 23:48:11,296 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1629 Valid, 4498 Invalid, 943 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [382 Valid, 561 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-13 23:48:11,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 489249 states.