./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 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2c5cc10-4534-4c9a-9b60-a9acdb319a72/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2c5cc10-4534-4c9a-9b60-a9acdb319a72/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2c5cc10-4534-4c9a-9b60-a9acdb319a72/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2c5cc10-4534-4c9a-9b60-a9acdb319a72/bin/uautomizer-TMbwUNV5ro/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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2c5cc10-4534-4c9a-9b60-a9acdb319a72/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2c5cc10-4534-4c9a-9b60-a9acdb319a72/bin/uautomizer-TMbwUNV5ro --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 --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-18 19:53:07,592 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 19:53:07,598 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 19:53:07,640 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 19:53:07,641 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 19:53:07,645 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 19:53:07,648 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 19:53:07,653 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 19:53:07,656 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 19:53:07,661 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 19:53:07,663 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 19:53:07,666 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 19:53:07,666 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 19:53:07,669 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 19:53:07,671 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 19:53:07,673 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 19:53:07,675 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 19:53:07,676 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 19:53:07,678 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 19:53:07,685 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 19:53:07,687 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 19:53:07,689 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 19:53:07,692 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 19:53:07,693 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 19:53:07,702 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 19:53:07,702 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 19:53:07,703 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 19:53:07,705 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 19:53:07,706 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 19:53:07,707 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 19:53:07,707 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 19:53:07,709 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 19:53:07,711 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 19:53:07,712 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 19:53:07,713 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 19:53:07,714 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 19:53:07,715 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 19:53:07,715 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 19:53:07,716 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 19:53:07,717 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 19:53:07,718 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 19:53:07,719 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2c5cc10-4534-4c9a-9b60-a9acdb319a72/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-18 19:53:07,764 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 19:53:07,764 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 19:53:07,765 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 19:53:07,765 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 19:53:07,766 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 19:53:07,767 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 19:53:07,767 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 19:53:07,768 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 19:53:07,768 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 19:53:07,768 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 19:53:07,769 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 19:53:07,770 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 19:53:07,770 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 19:53:07,770 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 19:53:07,770 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 19:53:07,771 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 19:53:07,771 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 19:53:07,771 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 19:53:07,771 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 19:53:07,772 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 19:53:07,772 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 19:53:07,772 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:53:07,772 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 19:53:07,773 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 19:53:07,773 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 19:53:07,773 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 19:53:07,775 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 19:53:07,775 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 19:53:07,775 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 19:53:07,775 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 19:53:07,776 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2c5cc10-4534-4c9a-9b60-a9acdb319a72/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2c5cc10-4534-4c9a-9b60-a9acdb319a72/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b4ab5f9a609d808b1cc730f70e246b6cee2b77e8055db2b71a14eb45eb69a8df [2022-11-18 19:53:08,094 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 19:53:08,117 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 19:53:08,120 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 19:53:08,121 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 19:53:08,123 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 19:53:08,125 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2c5cc10-4534-4c9a-9b60-a9acdb319a72/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--amc6821.ko-main.cil.out.i [2022-11-18 19:53:08,210 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2c5cc10-4534-4c9a-9b60-a9acdb319a72/bin/uautomizer-TMbwUNV5ro/data/2a352ee1f/8ce7dfa812fb409c8a607a19d6549568/FLAG10ccbd2e4 [2022-11-18 19:53:09,029 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 19:53:09,034 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2c5cc10-4534-4c9a-9b60-a9acdb319a72/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--amc6821.ko-main.cil.out.i [2022-11-18 19:53:09,061 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2c5cc10-4534-4c9a-9b60-a9acdb319a72/bin/uautomizer-TMbwUNV5ro/data/2a352ee1f/8ce7dfa812fb409c8a607a19d6549568/FLAG10ccbd2e4 [2022-11-18 19:53:09,103 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2c5cc10-4534-4c9a-9b60-a9acdb319a72/bin/uautomizer-TMbwUNV5ro/data/2a352ee1f/8ce7dfa812fb409c8a607a19d6549568 [2022-11-18 19:53:09,105 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 19:53:09,107 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 19:53:09,115 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 19:53:09,116 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 19:53:09,120 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 19:53:09,121 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:53:09" (1/1) ... [2022-11-18 19:53:09,122 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63fe0bb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:53:09, skipping insertion in model container [2022-11-18 19:53:09,123 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:53:09" (1/1) ... [2022-11-18 19:53:09,130 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 19:53:09,247 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 19:53:10,161 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2c5cc10-4534-4c9a-9b60-a9acdb319a72/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--amc6821.ko-main.cil.out.i[139464,139477] [2022-11-18 19:53:10,246 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:53:10,282 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 19:53:10,479 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2c5cc10-4534-4c9a-9b60-a9acdb319a72/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--amc6821.ko-main.cil.out.i[139464,139477] [2022-11-18 19:53:10,491 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:53:10,667 INFO L208 MainTranslator]: Completed translation [2022-11-18 19:53:10,667 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:53:10 WrapperNode [2022-11-18 19:53:10,669 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 19:53:10,670 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 19:53:10,671 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 19:53:10,671 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 19:53:10,679 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:53:10" (1/1) ... [2022-11-18 19:53:10,758 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:53:10" (1/1) ... [2022-11-18 19:53:10,906 INFO L138 Inliner]: procedures = 138, calls = 1444, calls flagged for inlining = 60, calls inlined = 52, statements flattened = 3750 [2022-11-18 19:53:10,907 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 19:53:10,908 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 19:53:10,908 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 19:53:10,908 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 19:53:10,917 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:53:10" (1/1) ... [2022-11-18 19:53:10,917 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:53:10" (1/1) ... [2022-11-18 19:53:10,950 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:53:10" (1/1) ... [2022-11-18 19:53:10,953 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:53:10" (1/1) ... [2022-11-18 19:53:11,071 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:53:10" (1/1) ... [2022-11-18 19:53:11,085 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:53:10" (1/1) ... [2022-11-18 19:53:11,101 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:53:10" (1/1) ... [2022-11-18 19:53:11,113 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:53:10" (1/1) ... [2022-11-18 19:53:11,138 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 19:53:11,139 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 19:53:11,139 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 19:53:11,139 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 19:53:11,140 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:53:10" (1/1) ... [2022-11-18 19:53:11,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:53:11,160 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2c5cc10-4534-4c9a-9b60-a9acdb319a72/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:53:11,174 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2c5cc10-4534-4c9a-9b60-a9acdb319a72/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 19:53:11,192 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2c5cc10-4534-4c9a-9b60-a9acdb319a72/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 19:53:11,223 INFO L130 BoogieDeclarations]: Found specification of procedure get_pwm1_auto_point_pwm [2022-11-18 19:53:11,224 INFO L138 BoogieDeclarations]: Found implementation of procedure get_pwm1_auto_point_pwm [2022-11-18 19:53:11,224 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 19:53:11,224 INFO L130 BoogieDeclarations]: Found specification of procedure get_fan [2022-11-18 19:53:11,224 INFO L138 BoogieDeclarations]: Found implementation of procedure get_fan [2022-11-18 19:53:11,224 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_remove_group [2022-11-18 19:53:11,225 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_remove_group [2022-11-18 19:53:11,225 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_get_clientdata [2022-11-18 19:53:11,225 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_get_clientdata [2022-11-18 19:53:11,225 INFO L130 BoogieDeclarations]: Found specification of procedure amc6821_detect [2022-11-18 19:53:11,225 INFO L138 BoogieDeclarations]: Found implementation of procedure amc6821_detect [2022-11-18 19:53:11,225 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-18 19:53:11,226 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-18 19:53:11,226 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 19:53:11,226 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-18 19:53:11,226 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-18 19:53:11,226 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-18 19:53:11,227 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-18 19:53:11,227 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-18 19:53:11,227 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-18 19:53:11,227 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-18 19:53:11,227 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_update_lock_of_amc6821_data [2022-11-18 19:53:11,228 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_update_lock_of_amc6821_data [2022-11-18 19:53:11,228 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-11-18 19:53:11,228 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-11-18 19:53:11,228 INFO L130 BoogieDeclarations]: Found specification of procedure get_temp_auto_point_temp [2022-11-18 19:53:11,228 INFO L138 BoogieDeclarations]: Found implementation of procedure get_temp_auto_point_temp [2022-11-18 19:53:11,228 INFO L130 BoogieDeclarations]: Found specification of procedure set_slope_register [2022-11-18 19:53:11,229 INFO L138 BoogieDeclarations]: Found implementation of procedure set_slope_register [2022-11-18 19:53:11,229 INFO L130 BoogieDeclarations]: Found specification of procedure get_temp_alarm [2022-11-18 19:53:11,229 INFO L138 BoogieDeclarations]: Found implementation of procedure get_temp_alarm [2022-11-18 19:53:11,229 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 19:53:11,229 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-18 19:53:11,230 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 19:53:11,230 INFO L130 BoogieDeclarations]: Found specification of procedure SENSORS_LIMIT [2022-11-18 19:53:11,230 INFO L138 BoogieDeclarations]: Found implementation of procedure SENSORS_LIMIT [2022-11-18 19:53:11,230 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_smbus_read_byte_data [2022-11-18 19:53:11,230 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_smbus_read_byte_data [2022-11-18 19:53:11,230 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-18 19:53:11,231 INFO L130 BoogieDeclarations]: Found specification of procedure amc6821_update_device [2022-11-18 19:53:11,231 INFO L138 BoogieDeclarations]: Found implementation of procedure amc6821_update_device [2022-11-18 19:53:11,231 INFO L130 BoogieDeclarations]: Found specification of procedure kstrtol [2022-11-18 19:53:11,231 INFO L138 BoogieDeclarations]: Found implementation of procedure kstrtol [2022-11-18 19:53:11,231 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 19:53:11,232 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-18 19:53:11,232 INFO L130 BoogieDeclarations]: Found specification of procedure get_temp [2022-11-18 19:53:11,232 INFO L138 BoogieDeclarations]: Found implementation of procedure get_temp [2022-11-18 19:53:11,232 INFO L130 BoogieDeclarations]: Found specification of procedure set_temp [2022-11-18 19:53:11,232 INFO L138 BoogieDeclarations]: Found implementation of procedure set_temp [2022-11-18 19:53:11,233 INFO L130 BoogieDeclarations]: Found specification of procedure set_fan [2022-11-18 19:53:11,233 INFO L138 BoogieDeclarations]: Found implementation of procedure set_fan [2022-11-18 19:53:11,233 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 19:53:11,233 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_smbus_write_byte_data [2022-11-18 19:53:11,233 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_smbus_write_byte_data [2022-11-18 19:53:11,233 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_update_lock_of_amc6821_data [2022-11-18 19:53:11,234 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_update_lock_of_amc6821_data [2022-11-18 19:53:11,234 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 19:53:11,234 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 19:53:11,234 INFO L130 BoogieDeclarations]: Found specification of procedure set_temp_auto_point_temp [2022-11-18 19:53:11,234 INFO L138 BoogieDeclarations]: Found implementation of procedure set_temp_auto_point_temp [2022-11-18 19:53:11,235 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-11-18 19:53:11,235 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-11-18 19:53:11,912 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 19:53:11,915 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 19:53:15,800 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 19:53:15,821 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 19:53:15,822 INFO L300 CfgBuilder]: Removed 11 assume(true) statements. [2022-11-18 19:53:15,825 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:53:15 BoogieIcfgContainer [2022-11-18 19:53:15,825 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 19:53:15,827 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 19:53:15,827 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 19:53:15,835 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 19:53:15,835 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 07:53:09" (1/3) ... [2022-11-18 19:53:15,836 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5636ad10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:53:15, skipping insertion in model container [2022-11-18 19:53:15,836 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:53:10" (2/3) ... [2022-11-18 19:53:15,837 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5636ad10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:53:15, skipping insertion in model container [2022-11-18 19:53:15,837 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:53:15" (3/3) ... [2022-11-18 19:53:15,838 INFO L112 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--hwmon--amc6821.ko-main.cil.out.i [2022-11-18 19:53:15,857 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 19:53:15,858 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-18 19:53:15,969 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 19:53:15,977 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=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@3b1c0c71, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 19:53:15,978 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-18 19:53:15,985 INFO L276 IsEmpty]: Start isEmpty. Operand has 881 states, 684 states have (on average 1.536549707602339) internal successors, (1051), 691 states have internal predecessors, (1051), 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) [2022-11-18 19:53:15,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-18 19:53:16,000 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:53:16,000 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] [2022-11-18 19:53:16,001 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:53:16,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:53:16,006 INFO L85 PathProgramCache]: Analyzing trace with hash -1568445557, now seen corresponding path program 1 times [2022-11-18 19:53:16,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:53:16,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102011442] [2022-11-18 19:53:16,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:16,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:53:16,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:16,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 19:53:16,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:16,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 19:53:16,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:16,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:53:16,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:53:16,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102011442] [2022-11-18 19:53:16,872 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102011442] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:53:16,872 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:53:16,873 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 19:53:16,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197003470] [2022-11-18 19:53:16,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:53:16,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:53:16,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:53:16,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:53:16,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:53:16,919 INFO L87 Difference]: Start difference. First operand has 881 states, 684 states have (on average 1.536549707602339) internal successors, (1051), 691 states have internal predecessors, (1051), 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 5.5) 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) [2022-11-18 19:53:19,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:53:19,187 INFO L93 Difference]: Finished difference Result 2777 states and 4593 transitions. [2022-11-18 19:53:19,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:53:19,190 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 [2022-11-18 19:53:19,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:53:19,215 INFO L225 Difference]: With dead ends: 2777 [2022-11-18 19:53:19,216 INFO L226 Difference]: Without dead ends: 1891 [2022-11-18 19:53:19,230 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 [2022-11-18 19:53:19,233 INFO L413 NwaCegarLoop]: 1621 mSDtfsCounter, 1500 mSDsluCounter, 2385 mSDsCounter, 0 mSdLazyCounter, 607 mSolverCounterSat, 390 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1617 SdHoareTripleChecker+Valid, 4006 SdHoareTripleChecker+Invalid, 997 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 390 IncrementalHoareTripleChecker+Valid, 607 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-18 19:53:19,234 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1617 Valid, 4006 Invalid, 997 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [390 Valid, 607 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-18 19:53:19,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1891 states. [2022-11-18 19:53:19,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1891 to 1726. [2022-11-18 19:53:19,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1726 states, 1344 states have (on average 1.5260416666666667) internal successors, (2051), 1349 states have internal predecessors, (2051), 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) [2022-11-18 19:53:19,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1726 states to 1726 states and 2711 transitions. [2022-11-18 19:53:19,438 INFO L78 Accepts]: Start accepts. Automaton has 1726 states and 2711 transitions. Word has length 30 [2022-11-18 19:53:19,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:53:19,444 INFO L495 AbstractCegarLoop]: Abstraction has 1726 states and 2711 transitions. [2022-11-18 19:53:19,444 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) [2022-11-18 19:53:19,445 INFO L276 IsEmpty]: Start isEmpty. Operand 1726 states and 2711 transitions. [2022-11-18 19:53:19,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-11-18 19:53:19,453 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:53:19,453 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] [2022-11-18 19:53:19,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 19:53:19,454 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:53:19,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:53:19,455 INFO L85 PathProgramCache]: Analyzing trace with hash 1046669532, now seen corresponding path program 1 times [2022-11-18 19:53:19,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:53:19,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760210050] [2022-11-18 19:53:19,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:19,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:53:19,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:19,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-18 19:53:19,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:19,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 19:53:19,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:19,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:53:19,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:53:19,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760210050] [2022-11-18 19:53:19,770 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760210050] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:53:19,770 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:53:19,770 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 19:53:19,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181844312] [2022-11-18 19:53:19,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:53:19,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:53:19,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:53:19,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:53:19,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:53:19,773 INFO L87 Difference]: Start difference. First operand 1726 states and 2711 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) [2022-11-18 19:53:21,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:53:21,858 INFO L93 Difference]: Finished difference Result 5460 states and 8665 transitions. [2022-11-18 19:53:21,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:53:21,859 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 [2022-11-18 19:53:21,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:53:21,881 INFO L225 Difference]: With dead ends: 5460 [2022-11-18 19:53:21,881 INFO L226 Difference]: Without dead ends: 3737 [2022-11-18 19:53:21,888 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 [2022-11-18 19:53:21,889 INFO L413 NwaCegarLoop]: 1628 mSDtfsCounter, 1493 mSDsluCounter, 2386 mSDsCounter, 0 mSdLazyCounter, 608 mSolverCounterSat, 389 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1610 SdHoareTripleChecker+Valid, 4014 SdHoareTripleChecker+Invalid, 997 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 389 IncrementalHoareTripleChecker+Valid, 608 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-18 19:53:21,890 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1610 Valid, 4014 Invalid, 997 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [389 Valid, 608 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-18 19:53:21,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3737 states. [2022-11-18 19:53:22,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3737 to 3422. [2022-11-18 19:53:22,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3422 states, 2667 states have (on average 1.5260592425946757) internal successors, (4070), 2672 states have internal predecessors, (4070), 658 states have call successors, (658), 97 states have call predecessors, (658), 96 states have return successors, (652), 652 states have call predecessors, (652), 652 states have call successors, (652) [2022-11-18 19:53:22,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3422 states to 3422 states and 5380 transitions. [2022-11-18 19:53:22,065 INFO L78 Accepts]: Start accepts. Automaton has 3422 states and 5380 transitions. Word has length 33 [2022-11-18 19:53:22,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:53:22,065 INFO L495 AbstractCegarLoop]: Abstraction has 3422 states and 5380 transitions. [2022-11-18 19:53:22,065 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) [2022-11-18 19:53:22,066 INFO L276 IsEmpty]: Start isEmpty. Operand 3422 states and 5380 transitions. [2022-11-18 19:53:22,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-18 19:53:22,067 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:53:22,067 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] [2022-11-18 19:53:22,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 19:53:22,067 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:53:22,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:53:22,068 INFO L85 PathProgramCache]: Analyzing trace with hash -2038160726, now seen corresponding path program 1 times [2022-11-18 19:53:22,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:53:22,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895448059] [2022-11-18 19:53:22,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:22,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:53:22,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:22,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 19:53:22,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:22,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 19:53:22,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:22,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:53:22,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:53:22,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895448059] [2022-11-18 19:53:22,352 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895448059] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:53:22,352 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:53:22,352 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 19:53:22,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704144246] [2022-11-18 19:53:22,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:53:22,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:53:22,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:53:22,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:53:22,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:53:22,354 INFO L87 Difference]: Start difference. First operand 3422 states and 5380 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) [2022-11-18 19:53:24,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:53:24,375 INFO L93 Difference]: Finished difference Result 10836 states and 17206 transitions. [2022-11-18 19:53:24,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:53:24,377 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 [2022-11-18 19:53:24,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:53:24,421 INFO L225 Difference]: With dead ends: 10836 [2022-11-18 19:53:24,422 INFO L226 Difference]: Without dead ends: 7417 [2022-11-18 19:53:24,438 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 [2022-11-18 19:53:24,440 INFO L413 NwaCegarLoop]: 1637 mSDtfsCounter, 1492 mSDsluCounter, 2395 mSDsCounter, 0 mSdLazyCounter, 607 mSolverCounterSat, 388 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1609 SdHoareTripleChecker+Valid, 4032 SdHoareTripleChecker+Invalid, 995 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 388 IncrementalHoareTripleChecker+Valid, 607 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-18 19:53:24,440 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1609 Valid, 4032 Invalid, 995 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [388 Valid, 607 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-18 19:53:24,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7417 states. [2022-11-18 19:53:24,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7417 to 6802. [2022-11-18 19:53:24,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6802 states, 5303 states have (on average 1.5255515745804262) internal successors, (8090), 5308 states have internal predecessors, (8090), 1306 states have call successors, (1306), 193 states have call predecessors, (1306), 192 states have return successors, (1300), 1300 states have call predecessors, (1300), 1300 states have call successors, (1300) [2022-11-18 19:53:24,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6802 states to 6802 states and 10696 transitions. [2022-11-18 19:53:24,869 INFO L78 Accepts]: Start accepts. Automaton has 6802 states and 10696 transitions. Word has length 34 [2022-11-18 19:53:24,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:53:24,870 INFO L495 AbstractCegarLoop]: Abstraction has 6802 states and 10696 transitions. [2022-11-18 19:53:24,870 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) [2022-11-18 19:53:24,870 INFO L276 IsEmpty]: Start isEmpty. Operand 6802 states and 10696 transitions. [2022-11-18 19:53:24,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-18 19:53:24,872 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:53:24,872 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] [2022-11-18 19:53:24,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 19:53:24,872 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:53:24,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:53:24,873 INFO L85 PathProgramCache]: Analyzing trace with hash 2046561695, now seen corresponding path program 1 times [2022-11-18 19:53:24,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:53:24,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603880464] [2022-11-18 19:53:24,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:24,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:53:24,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:25,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 19:53:25,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:25,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 19:53:25,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:25,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:53:25,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:53:25,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603880464] [2022-11-18 19:53:25,169 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603880464] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:53:25,170 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:53:25,170 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 19:53:25,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720665117] [2022-11-18 19:53:25,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:53:25,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:53:25,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:53:25,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:53:25,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:53:25,172 INFO L87 Difference]: Start difference. First operand 6802 states and 10696 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) [2022-11-18 19:53:27,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:53:27,313 INFO L93 Difference]: Finished difference Result 21536 states and 34194 transitions. [2022-11-18 19:53:27,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:53:27,314 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 [2022-11-18 19:53:27,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:53:27,425 INFO L225 Difference]: With dead ends: 21536 [2022-11-18 19:53:27,425 INFO L226 Difference]: Without dead ends: 14737 [2022-11-18 19:53:27,459 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 [2022-11-18 19:53:27,460 INFO L413 NwaCegarLoop]: 1717 mSDtfsCounter, 1492 mSDsluCounter, 2467 mSDsCounter, 0 mSdLazyCounter, 607 mSolverCounterSat, 380 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1609 SdHoareTripleChecker+Valid, 4184 SdHoareTripleChecker+Invalid, 987 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 380 IncrementalHoareTripleChecker+Valid, 607 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-18 19:53:27,460 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1609 Valid, 4184 Invalid, 987 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [380 Valid, 607 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-18 19:53:27,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14737 states. [2022-11-18 19:53:28,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14737 to 13522. [2022-11-18 19:53:28,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13522 states, 10539 states have (on average 1.5248126008160168) internal successors, (16070), 10544 states have internal predecessors, (16070), 2598 states have call successors, (2598), 385 states have call predecessors, (2598), 384 states have return successors, (2592), 2592 states have call predecessors, (2592), 2592 states have call successors, (2592) [2022-11-18 19:53:28,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13522 states to 13522 states and 21260 transitions. [2022-11-18 19:53:28,350 INFO L78 Accepts]: Start accepts. Automaton has 13522 states and 21260 transitions. Word has length 29 [2022-11-18 19:53:28,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:53:28,351 INFO L495 AbstractCegarLoop]: Abstraction has 13522 states and 21260 transitions. [2022-11-18 19:53:28,352 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) [2022-11-18 19:53:28,352 INFO L276 IsEmpty]: Start isEmpty. Operand 13522 states and 21260 transitions. [2022-11-18 19:53:28,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-18 19:53:28,355 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:53:28,355 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] [2022-11-18 19:53:28,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 19:53:28,356 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:53:28,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:53:28,357 INFO L85 PathProgramCache]: Analyzing trace with hash -279248695, now seen corresponding path program 1 times [2022-11-18 19:53:28,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:53:28,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048757033] [2022-11-18 19:53:28,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:28,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:53:28,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:28,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 19:53:28,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:28,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 19:53:28,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:28,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:53:28,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:53:28,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048757033] [2022-11-18 19:53:28,693 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048757033] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:53:28,693 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:53:28,693 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 19:53:28,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801771034] [2022-11-18 19:53:28,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:53:28,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:53:28,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:53:28,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:53:28,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:53:28,695 INFO L87 Difference]: Start difference. First operand 13522 states and 21260 transitions. 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) [2022-11-18 19:53:31,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:53:31,491 INFO L93 Difference]: Finished difference Result 42848 states and 68014 transitions. [2022-11-18 19:53:31,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:53:31,492 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 [2022-11-18 19:53:31,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:53:31,670 INFO L225 Difference]: With dead ends: 42848 [2022-11-18 19:53:31,671 INFO L226 Difference]: Without dead ends: 29329 [2022-11-18 19:53:31,722 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 [2022-11-18 19:53:31,725 INFO L413 NwaCegarLoop]: 1660 mSDtfsCounter, 1493 mSDsluCounter, 2416 mSDsCounter, 0 mSdLazyCounter, 607 mSolverCounterSat, 386 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1610 SdHoareTripleChecker+Valid, 4076 SdHoareTripleChecker+Invalid, 993 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 386 IncrementalHoareTripleChecker+Valid, 607 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-18 19:53:31,726 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1610 Valid, 4076 Invalid, 993 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [386 Valid, 607 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-18 19:53:31,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29329 states. [2022-11-18 19:53:33,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29329 to 26914. [2022-11-18 19:53:33,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26914 states, 20971 states have (on average 1.5242954556292023) internal successors, (31966), 20976 states have internal predecessors, (31966), 5174 states have call successors, (5174), 769 states have call predecessors, (5174), 768 states have return successors, (5168), 5168 states have call predecessors, (5168), 5168 states have call successors, (5168) [2022-11-18 19:53:33,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26914 states to 26914 states and 42308 transitions. [2022-11-18 19:53:33,308 INFO L78 Accepts]: Start accepts. Automaton has 26914 states and 42308 transitions. Word has length 30 [2022-11-18 19:53:33,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:53:33,309 INFO L495 AbstractCegarLoop]: Abstraction has 26914 states and 42308 transitions. [2022-11-18 19:53:33,309 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) [2022-11-18 19:53:33,310 INFO L276 IsEmpty]: Start isEmpty. Operand 26914 states and 42308 transitions. [2022-11-18 19:53:33,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-18 19:53:33,311 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:53:33,311 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:53:33,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 19:53:33,312 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:53:33,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:53:33,313 INFO L85 PathProgramCache]: Analyzing trace with hash 1307474374, now seen corresponding path program 1 times [2022-11-18 19:53:33,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:53:33,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014010297] [2022-11-18 19:53:33,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:33,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:53:33,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:33,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-18 19:53:33,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:33,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 19:53:33,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:33,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:53:33,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:53:33,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014010297] [2022-11-18 19:53:33,654 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014010297] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:53:33,654 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:53:33,654 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 19:53:33,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561225358] [2022-11-18 19:53:33,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:53:33,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:53:33,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:53:33,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:53:33,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:53:33,656 INFO L87 Difference]: Start difference. First operand 26914 states and 42308 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 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) [2022-11-18 19:53:37,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:53:37,374 INFO L93 Difference]: Finished difference Result 85216 states and 135206 transitions. [2022-11-18 19:53:37,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:53:37,375 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 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 35 [2022-11-18 19:53:37,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:53:37,716 INFO L225 Difference]: With dead ends: 85216 [2022-11-18 19:53:37,716 INFO L226 Difference]: Without dead ends: 58305 [2022-11-18 19:53:37,831 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 [2022-11-18 19:53:37,836 INFO L413 NwaCegarLoop]: 1741 mSDtfsCounter, 1484 mSDsluCounter, 2485 mSDsCounter, 0 mSdLazyCounter, 611 mSolverCounterSat, 377 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1601 SdHoareTripleChecker+Valid, 4226 SdHoareTripleChecker+Invalid, 988 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 377 IncrementalHoareTripleChecker+Valid, 611 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-18 19:53:37,836 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1601 Valid, 4226 Invalid, 988 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [377 Valid, 611 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-18 19:53:37,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58305 states. [2022-11-18 19:53:40,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58305 to 53490. [2022-11-18 19:53:40,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53490 states, 41675 states have (on average 1.5229754049190163) internal successors, (63470), 41680 states have internal predecessors, (63470), 10278 states have call successors, (10278), 1537 states have call predecessors, (10278), 1536 states have return successors, (10272), 10272 states have call predecessors, (10272), 10272 states have call successors, (10272) [2022-11-18 19:53:41,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53490 states to 53490 states and 84020 transitions. [2022-11-18 19:53:41,031 INFO L78 Accepts]: Start accepts. Automaton has 53490 states and 84020 transitions. Word has length 35 [2022-11-18 19:53:41,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:53:41,031 INFO L495 AbstractCegarLoop]: Abstraction has 53490 states and 84020 transitions. [2022-11-18 19:53:41,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 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) [2022-11-18 19:53:41,032 INFO L276 IsEmpty]: Start isEmpty. Operand 53490 states and 84020 transitions. [2022-11-18 19:53:41,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-11-18 19:53:41,033 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:53:41,033 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] [2022-11-18 19:53:41,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 19:53:41,034 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:53:41,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:53:41,034 INFO L85 PathProgramCache]: Analyzing trace with hash 765210102, now seen corresponding path program 1 times [2022-11-18 19:53:41,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:53:41,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587878399] [2022-11-18 19:53:41,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:41,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:53:41,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:41,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-18 19:53:41,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:41,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 19:53:41,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:41,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:53:41,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:53:41,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587878399] [2022-11-18 19:53:41,274 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587878399] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:53:41,275 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:53:41,275 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 19:53:41,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067643507] [2022-11-18 19:53:41,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:53:41,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:53:41,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:53:41,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:53:41,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:53:41,277 INFO L87 Difference]: Start difference. First operand 53490 states and 84020 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) [2022-11-18 19:53:46,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:53:46,783 INFO L93 Difference]: Finished difference Result 169424 states and 268566 transitions. [2022-11-18 19:53:46,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:53:46,783 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 [2022-11-18 19:53:46,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:53:47,713 INFO L225 Difference]: With dead ends: 169424 [2022-11-18 19:53:47,713 INFO L226 Difference]: Without dead ends: 115937 [2022-11-18 19:53:47,883 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 [2022-11-18 19:53:47,887 INFO L413 NwaCegarLoop]: 1756 mSDtfsCounter, 1481 mSDsluCounter, 2499 mSDsCounter, 0 mSdLazyCounter, 610 mSolverCounterSat, 375 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1598 SdHoareTripleChecker+Valid, 4255 SdHoareTripleChecker+Invalid, 985 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 375 IncrementalHoareTripleChecker+Valid, 610 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-18 19:53:47,887 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1598 Valid, 4255 Invalid, 985 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [375 Valid, 610 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-18 19:53:47,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115937 states. [2022-11-18 19:53:52,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115937 to 106322. [2022-11-18 19:53:52,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106322 states, 82827 states have (on average 1.5216052736426529) internal successors, (126030), 82832 states have internal predecessors, (126030), 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) [2022-11-18 19:53:52,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106322 states to 106322 states and 166868 transitions. [2022-11-18 19:53:52,978 INFO L78 Accepts]: Start accepts. Automaton has 106322 states and 166868 transitions. Word has length 39 [2022-11-18 19:53:52,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:53:52,979 INFO L495 AbstractCegarLoop]: Abstraction has 106322 states and 166868 transitions. [2022-11-18 19:53:52,979 INFO L496 AbstractCegarLoop]: INTERPOLANT 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) [2022-11-18 19:53:52,979 INFO L276 IsEmpty]: Start isEmpty. Operand 106322 states and 166868 transitions. [2022-11-18 19:53:52,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-11-18 19:53:52,982 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:53:52,986 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] [2022-11-18 19:53:52,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 19:53:52,987 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:53:52,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:53:52,988 INFO L85 PathProgramCache]: Analyzing trace with hash 722360066, now seen corresponding path program 1 times [2022-11-18 19:53:52,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:53:52,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490597164] [2022-11-18 19:53:52,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:52,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:53:53,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:53,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-18 19:53:53,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:53,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 19:53:53,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:53,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:53:53,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:53:53,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490597164] [2022-11-18 19:53:53,302 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490597164] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:53:53,302 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:53:53,302 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 19:53:53,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216617538] [2022-11-18 19:53:53,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:53:53,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:53:53,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:53:53,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:53:53,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:53:53,306 INFO L87 Difference]: Start difference. First operand 106322 states and 166868 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) [2022-11-18 19:54:02,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:54:02,811 INFO L93 Difference]: Finished difference Result 336880 states and 533494 transitions. [2022-11-18 19:54:02,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:54:02,812 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 [2022-11-18 19:54:02,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:54:03,991 INFO L225 Difference]: With dead ends: 336880 [2022-11-18 19:54:03,991 INFO L226 Difference]: Without dead ends: 230561 [2022-11-18 19:54:04,259 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 [2022-11-18 19:54:04,260 INFO L413 NwaCegarLoop]: 1772 mSDtfsCounter, 1480 mSDsluCounter, 2513 mSDsCounter, 0 mSdLazyCounter, 610 mSolverCounterSat, 373 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1597 SdHoareTripleChecker+Valid, 4285 SdHoareTripleChecker+Invalid, 983 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 373 IncrementalHoareTripleChecker+Valid, 610 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-18 19:54:04,260 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1597 Valid, 4285 Invalid, 983 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [373 Valid, 610 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-18 19:54:04,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230561 states.