./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-commit-tester/main0_drivers-media-video-tlg2300-poseidon-ko--32_7a--4a349aa-1.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a 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_19080a43-bfb4-4206-bf86-7325f959a0d7/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19080a43-bfb4-4206-bf86-7325f959a0d7/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19080a43-bfb4-4206-bf86-7325f959a0d7/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19080a43-bfb4-4206-bf86-7325f959a0d7/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-commit-tester/main0_drivers-media-video-tlg2300-poseidon-ko--32_7a--4a349aa-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19080a43-bfb4-4206-bf86-7325f959a0d7/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19080a43-bfb4-4206-bf86-7325f959a0d7/bin/uautomizer-Dbtcem3rbc --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 e161bf665c83935d804e4a6c9c0991c63b86e29f86a0454f154d0af3adfb44c2 --- 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-5e519f3 [2022-11-02 21:10:33,763 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 21:10:33,766 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 21:10:33,794 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 21:10:33,795 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 21:10:33,796 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 21:10:33,797 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 21:10:33,799 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 21:10:33,801 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 21:10:33,802 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 21:10:33,803 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 21:10:33,805 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 21:10:33,805 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 21:10:33,806 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 21:10:33,808 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 21:10:33,809 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 21:10:33,810 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 21:10:33,811 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 21:10:33,813 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 21:10:33,815 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 21:10:33,817 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 21:10:33,818 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 21:10:33,819 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 21:10:33,820 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 21:10:33,824 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 21:10:33,824 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 21:10:33,824 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 21:10:33,825 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 21:10:33,826 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 21:10:33,827 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 21:10:33,827 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 21:10:33,828 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 21:10:33,829 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 21:10:33,830 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 21:10:33,831 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 21:10:33,832 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 21:10:33,832 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 21:10:33,833 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 21:10:33,833 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 21:10:33,834 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 21:10:33,835 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 21:10:33,836 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19080a43-bfb4-4206-bf86-7325f959a0d7/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-02 21:10:33,871 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 21:10:33,876 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 21:10:33,877 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 21:10:33,877 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 21:10:33,879 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 21:10:33,879 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 21:10:33,880 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 21:10:33,880 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 21:10:33,881 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 21:10:33,881 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 21:10:33,882 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 21:10:33,882 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 21:10:33,883 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 21:10:33,883 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 21:10:33,883 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 21:10:33,883 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 21:10:33,884 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 21:10:33,884 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 21:10:33,884 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 21:10:33,885 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 21:10:33,885 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 21:10:33,885 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:10:33,885 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 21:10:33,886 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 21:10:33,886 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 21:10:33,886 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 21:10:33,888 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 21:10:33,888 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 21:10:33,889 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 21:10:33,889 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 21:10:33,890 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_19080a43-bfb4-4206-bf86-7325f959a0d7/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19080a43-bfb4-4206-bf86-7325f959a0d7/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e161bf665c83935d804e4a6c9c0991c63b86e29f86a0454f154d0af3adfb44c2 [2022-11-02 21:10:34,232 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 21:10:34,256 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 21:10:34,260 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 21:10:34,262 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 21:10:34,263 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 21:10:34,265 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19080a43-bfb4-4206-bf86-7325f959a0d7/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/ldv-commit-tester/main0_drivers-media-video-tlg2300-poseidon-ko--32_7a--4a349aa-1.i [2022-11-02 21:10:34,350 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19080a43-bfb4-4206-bf86-7325f959a0d7/bin/uautomizer-Dbtcem3rbc/data/046e73d4d/52ac784a84074f9a843d670d75d9177e/FLAG9ce1635d8 [2022-11-02 21:10:35,352 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 21:10:35,354 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19080a43-bfb4-4206-bf86-7325f959a0d7/sv-benchmarks/c/ldv-commit-tester/main0_drivers-media-video-tlg2300-poseidon-ko--32_7a--4a349aa-1.i [2022-11-02 21:10:35,429 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19080a43-bfb4-4206-bf86-7325f959a0d7/bin/uautomizer-Dbtcem3rbc/data/046e73d4d/52ac784a84074f9a843d670d75d9177e/FLAG9ce1635d8 [2022-11-02 21:10:35,714 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19080a43-bfb4-4206-bf86-7325f959a0d7/bin/uautomizer-Dbtcem3rbc/data/046e73d4d/52ac784a84074f9a843d670d75d9177e [2022-11-02 21:10:35,718 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 21:10:35,720 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 21:10:35,724 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 21:10:35,724 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 21:10:35,728 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 21:10:35,729 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:10:35" (1/1) ... [2022-11-02 21:10:35,730 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5df3715f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:10:35, skipping insertion in model container [2022-11-02 21:10:35,730 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:10:35" (1/1) ... [2022-11-02 21:10:35,739 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 21:10:35,920 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 21:10:38,976 WARN L230 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_19080a43-bfb4-4206-bf86-7325f959a0d7/sv-benchmarks/c/ldv-commit-tester/main0_drivers-media-video-tlg2300-poseidon-ko--32_7a--4a349aa-1.i[341124,341137] [2022-11-02 21:10:39,137 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:10:39,224 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 21:10:39,969 WARN L230 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_19080a43-bfb4-4206-bf86-7325f959a0d7/sv-benchmarks/c/ldv-commit-tester/main0_drivers-media-video-tlg2300-poseidon-ko--32_7a--4a349aa-1.i[341124,341137] [2022-11-02 21:10:39,987 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:10:40,256 INFO L208 MainTranslator]: Completed translation [2022-11-02 21:10:40,256 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:10:40 WrapperNode [2022-11-02 21:10:40,258 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 21:10:40,259 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 21:10:40,260 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 21:10:40,260 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 21:10:40,267 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:10:40" (1/1) ... [2022-11-02 21:10:40,412 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:10:40" (1/1) ... [2022-11-02 21:10:40,598 INFO L138 Inliner]: procedures = 461, calls = 4704, calls flagged for inlining = 237, calls inlined = 78, statements flattened = 4520 [2022-11-02 21:10:40,598 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 21:10:40,599 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 21:10:40,599 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 21:10:40,600 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 21:10:40,609 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:10:40" (1/1) ... [2022-11-02 21:10:40,609 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:10:40" (1/1) ... [2022-11-02 21:10:40,659 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:10:40" (1/1) ... [2022-11-02 21:10:40,660 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:10:40" (1/1) ... [2022-11-02 21:10:40,809 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:10:40" (1/1) ... [2022-11-02 21:10:40,835 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:10:40" (1/1) ... [2022-11-02 21:10:40,884 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:10:40" (1/1) ... [2022-11-02 21:10:40,905 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:10:40" (1/1) ... [2022-11-02 21:10:40,939 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 21:10:40,941 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 21:10:40,942 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 21:10:40,942 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 21:10:40,947 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:10:40" (1/1) ... [2022-11-02 21:10:40,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:10:40,964 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19080a43-bfb4-4206-bf86-7325f959a0d7/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:10:40,977 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19080a43-bfb4-4206-bf86-7325f959a0d7/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 21:10:40,986 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19080a43-bfb4-4206-bf86-7325f959a0d7/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 21:10:41,020 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2022-11-02 21:10:41,020 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2022-11-02 21:10:41,020 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2022-11-02 21:10:41,020 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-02 21:10:41,021 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-02 21:10:41,021 INFO L130 BoogieDeclarations]: Found specification of procedure usb_autopm_get_interface [2022-11-02 21:10:41,021 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_autopm_get_interface [2022-11-02 21:10:41,021 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_return_value [2022-11-02 21:10:41,022 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_return_value [2022-11-02 21:10:41,022 INFO L130 BoogieDeclarations]: Found specification of procedure pd_vidioc_s_fmt [2022-11-02 21:10:41,022 INFO L138 BoogieDeclarations]: Found implementation of procedure pd_vidioc_s_fmt [2022-11-02 21:10:41,022 INFO L130 BoogieDeclarations]: Found specification of procedure set_tuner_mode [2022-11-02 21:10:41,022 INFO L138 BoogieDeclarations]: Found implementation of procedure set_tuner_mode [2022-11-02 21:10:41,022 INFO L130 BoogieDeclarations]: Found specification of procedure video_devdata [2022-11-02 21:10:41,023 INFO L138 BoogieDeclarations]: Found implementation of procedure video_devdata [2022-11-02 21:10:41,023 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 21:10:41,023 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-02 21:10:41,023 INFO L130 BoogieDeclarations]: Found specification of procedure check_control_id [2022-11-02 21:10:41,023 INFO L138 BoogieDeclarations]: Found implementation of procedure check_control_id [2022-11-02 21:10:41,023 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2022-11-02 21:10:41,023 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2022-11-02 21:10:41,024 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-02 21:10:41,024 INFO L130 BoogieDeclarations]: Found specification of procedure kref_get [2022-11-02 21:10:41,024 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_get [2022-11-02 21:10:41,024 INFO L130 BoogieDeclarations]: Found specification of procedure set_frequency [2022-11-02 21:10:41,024 INFO L138 BoogieDeclarations]: Found implementation of procedure set_frequency [2022-11-02 21:10:41,024 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2022-11-02 21:10:41,025 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2022-11-02 21:10:41,025 INFO L130 BoogieDeclarations]: Found specification of procedure usb_autopm_put_interface [2022-11-02 21:10:41,025 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_autopm_put_interface [2022-11-02 21:10:41,025 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-02 21:10:41,025 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-02 21:10:41,025 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-02 21:10:41,026 INFO L130 BoogieDeclarations]: Found specification of procedure usb_transfer_stop [2022-11-02 21:10:41,026 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_transfer_stop [2022-11-02 21:10:41,026 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2022-11-02 21:10:41,026 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2022-11-02 21:10:41,026 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2022-11-02 21:10:41,026 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2022-11-02 21:10:41,026 INFO L130 BoogieDeclarations]: Found specification of procedure kref_put [2022-11-02 21:10:41,027 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_put [2022-11-02 21:10:41,027 INFO L130 BoogieDeclarations]: Found specification of procedure start_video_stream [2022-11-02 21:10:41,027 INFO L138 BoogieDeclarations]: Found implementation of procedure start_video_stream [2022-11-02 21:10:41,027 INFO L130 BoogieDeclarations]: Found specification of procedure video_get_drvdata [2022-11-02 21:10:41,028 INFO L138 BoogieDeclarations]: Found implementation of procedure video_get_drvdata [2022-11-02 21:10:41,028 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-02 21:10:41,029 INFO L130 BoogieDeclarations]: Found specification of procedure get_audio_std [2022-11-02 21:10:41,029 INFO L138 BoogieDeclarations]: Found implementation of procedure get_audio_std [2022-11-02 21:10:41,029 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 21:10:41,029 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_lock_of_poseidon [2022-11-02 21:10:41,029 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_lock_of_poseidon [2022-11-02 21:10:41,029 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-02 21:10:41,030 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-02 21:10:41,030 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-02 21:10:41,030 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-02 21:10:41,031 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_lock_of_poseidon [2022-11-02 21:10:41,031 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_lock_of_poseidon [2022-11-02 21:10:41,032 INFO L130 BoogieDeclarations]: Found specification of procedure pd_video_release [2022-11-02 21:10:41,032 INFO L138 BoogieDeclarations]: Found implementation of procedure pd_video_release [2022-11-02 21:10:41,033 INFO L130 BoogieDeclarations]: Found specification of procedure pd_video_open [2022-11-02 21:10:41,033 INFO L138 BoogieDeclarations]: Found implementation of procedure pd_video_open [2022-11-02 21:10:41,033 INFO L130 BoogieDeclarations]: Found specification of procedure usb_control_msg [2022-11-02 21:10:41,033 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_control_msg [2022-11-02 21:10:41,033 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2022-11-02 21:10:41,034 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2022-11-02 21:10:41,034 INFO L130 BoogieDeclarations]: Found specification of procedure send_set_req [2022-11-02 21:10:41,034 INFO L138 BoogieDeclarations]: Found implementation of procedure send_set_req [2022-11-02 21:10:41,035 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2022-11-02 21:10:41,035 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2022-11-02 21:10:41,035 INFO L130 BoogieDeclarations]: Found specification of procedure videobuf_iolock [2022-11-02 21:10:41,035 INFO L138 BoogieDeclarations]: Found implementation of procedure videobuf_iolock [2022-11-02 21:10:41,036 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_timeout [2022-11-02 21:10:41,036 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_timeout [2022-11-02 21:10:41,036 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_bulk_urbs_generic [2022-11-02 21:10:41,036 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_bulk_urbs_generic [2022-11-02 21:10:41,037 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 21:10:41,037 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 21:10:41,037 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2022-11-02 21:10:41,037 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2022-11-02 21:10:41,037 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2022-11-02 21:10:41,037 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2022-11-02 21:10:41,037 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-02 21:10:41,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-02 21:10:41,038 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_interface [2022-11-02 21:10:41,038 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_interface [2022-11-02 21:10:41,038 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2022-11-02 21:10:41,038 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2022-11-02 21:10:41,038 INFO L130 BoogieDeclarations]: Found specification of procedure usb_make_path [2022-11-02 21:10:41,039 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_make_path [2022-11-02 21:10:41,039 INFO L130 BoogieDeclarations]: Found specification of procedure free_all_urb [2022-11-02 21:10:41,040 INFO L138 BoogieDeclarations]: Found implementation of procedure free_all_urb [2022-11-02 21:10:41,040 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-02 21:10:41,040 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-02 21:10:41,040 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-02 21:10:41,040 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-02 21:10:41,040 INFO L130 BoogieDeclarations]: Found specification of procedure videobuf_mmap_free [2022-11-02 21:10:41,041 INFO L138 BoogieDeclarations]: Found implementation of procedure videobuf_mmap_free [2022-11-02 21:10:41,041 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-11-02 21:10:41,042 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-11-02 21:10:41,042 INFO L130 BoogieDeclarations]: Found specification of procedure pd_vidioc_s_tuner [2022-11-02 21:10:41,043 INFO L138 BoogieDeclarations]: Found implementation of procedure pd_vidioc_s_tuner [2022-11-02 21:10:41,043 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 21:10:41,043 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-02 21:10:41,043 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-02 21:10:41,043 INFO L130 BoogieDeclarations]: Found specification of procedure set_std [2022-11-02 21:10:41,043 INFO L138 BoogieDeclarations]: Found implementation of procedure set_std [2022-11-02 21:10:41,043 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-02 21:10:41,044 INFO L130 BoogieDeclarations]: Found specification of procedure free_all_urb_generic [2022-11-02 21:10:41,044 INFO L138 BoogieDeclarations]: Found implementation of procedure free_all_urb_generic [2022-11-02 21:10:41,044 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-02 21:10:41,044 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-11-02 21:10:41,045 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-11-02 21:10:41,045 INFO L130 BoogieDeclarations]: Found specification of procedure videobuf_stop [2022-11-02 21:10:41,045 INFO L138 BoogieDeclarations]: Found implementation of procedure videobuf_stop [2022-11-02 21:10:41,045 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2022-11-02 21:10:41,045 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2022-11-02 21:10:41,045 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_handler_precall [2022-11-02 21:10:41,046 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_handler_precall [2022-11-02 21:10:41,047 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2022-11-02 21:10:41,050 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2022-11-02 21:10:41,050 INFO L130 BoogieDeclarations]: Found specification of procedure send_get_req [2022-11-02 21:10:41,050 INFO L138 BoogieDeclarations]: Found implementation of procedure send_get_req [2022-11-02 21:10:41,050 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2022-11-02 21:10:41,051 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2022-11-02 21:10:41,053 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-02 21:10:41,053 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-02 21:10:41,053 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-02 21:10:41,053 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-02 21:10:41,060 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-02 21:10:41,060 INFO L130 BoogieDeclarations]: Found specification of procedure pd_video_checkmode [2022-11-02 21:10:41,060 INFO L138 BoogieDeclarations]: Found implementation of procedure pd_video_checkmode [2022-11-02 21:10:41,060 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_s_input [2022-11-02 21:10:41,061 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_s_input [2022-11-02 21:10:41,061 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_coherent [2022-11-02 21:10:41,061 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_coherent [2022-11-02 21:10:41,061 INFO L130 BoogieDeclarations]: Found specification of procedure videobuf_queue_vmalloc_init [2022-11-02 21:10:41,061 INFO L138 BoogieDeclarations]: Found implementation of procedure videobuf_queue_vmalloc_init [2022-11-02 21:10:41,061 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 21:10:41,061 INFO L130 BoogieDeclarations]: Found specification of procedure set_debug_mode [2022-11-02 21:10:41,062 INFO L138 BoogieDeclarations]: Found implementation of procedure set_debug_mode [2022-11-02 21:10:41,062 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-11-02 21:10:41,062 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-11-02 21:10:41,926 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 21:10:41,929 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 21:12:25,734 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 21:12:25,752 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 21:12:25,752 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-02 21:12:25,756 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:12:25 BoogieIcfgContainer [2022-11-02 21:12:25,756 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 21:12:25,759 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 21:12:25,759 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 21:12:25,763 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 21:12:25,763 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 09:10:35" (1/3) ... [2022-11-02 21:12:25,764 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cc043d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:12:25, skipping insertion in model container [2022-11-02 21:12:25,764 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:10:40" (2/3) ... [2022-11-02 21:12:25,764 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cc043d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:12:25, skipping insertion in model container [2022-11-02 21:12:25,764 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:12:25" (3/3) ... [2022-11-02 21:12:25,766 INFO L112 eAbstractionObserver]: Analyzing ICFG main0_drivers-media-video-tlg2300-poseidon-ko--32_7a--4a349aa-1.i [2022-11-02 21:12:25,785 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 21:12:25,786 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 21:12:25,857 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 21:12:25,864 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;@2d17d58f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 21:12:25,865 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 21:12:25,872 INFO L276 IsEmpty]: Start isEmpty. Operand has 944 states, 670 states have (on average 1.3597014925373134) internal successors, (911), 682 states have internal predecessors, (911), 210 states have call successors, (210), 62 states have call predecessors, (210), 62 states have return successors, (210), 209 states have call predecessors, (210), 210 states have call successors, (210) [2022-11-02 21:12:25,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-02 21:12:25,880 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:12:25,881 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:12:25,881 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:12:25,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:12:25,887 INFO L85 PathProgramCache]: Analyzing trace with hash -2090032356, now seen corresponding path program 1 times [2022-11-02 21:12:25,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:12:25,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653855978] [2022-11-02 21:12:25,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:12:25,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:12:26,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:27,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 21:12:27,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:27,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:12:27,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:12:27,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653855978] [2022-11-02 21:12:27,301 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653855978] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:12:27,302 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:12:27,302 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:12:27,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869497830] [2022-11-02 21:12:27,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:12:27,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:12:27,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:12:27,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:12:27,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:12:27,340 INFO L87 Difference]: Start difference. First operand has 944 states, 670 states have (on average 1.3597014925373134) internal successors, (911), 682 states have internal predecessors, (911), 210 states have call successors, (210), 62 states have call predecessors, (210), 62 states have return successors, (210), 209 states have call predecessors, (210), 210 states have call successors, (210) Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-02 21:12:29,528 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 21:12:31,611 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 21:12:34,701 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 21:12:38,046 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 21:12:41,160 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 21:12:42,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:12:42,747 INFO L93 Difference]: Finished difference Result 1954 states and 2789 transitions. [2022-11-02 21:12:42,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:12:42,750 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2022-11-02 21:12:42,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:12:42,770 INFO L225 Difference]: With dead ends: 1954 [2022-11-02 21:12:42,770 INFO L226 Difference]: Without dead ends: 1010 [2022-11-02 21:12:42,781 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:12:42,785 INFO L413 NwaCegarLoop]: 1196 mSDtfsCounter, 1154 mSDsluCounter, 628 mSDsCounter, 0 mSdLazyCounter, 712 mSolverCounterSat, 308 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1264 SdHoareTripleChecker+Valid, 1824 SdHoareTripleChecker+Invalid, 1025 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 308 IncrementalHoareTripleChecker+Valid, 712 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:12:42,786 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1264 Valid, 1824 Invalid, 1025 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [308 Valid, 712 Invalid, 5 Unknown, 0 Unchecked, 15.0s Time] [2022-11-02 21:12:42,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1010 states. [2022-11-02 21:12:42,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1010 to 1003. [2022-11-02 21:12:42,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1003 states, 716 states have (on average 1.3463687150837989) internal successors, (964), 725 states have internal predecessors, (964), 214 states have call successors, (214), 74 states have call predecessors, (214), 72 states have return successors, (208), 207 states have call predecessors, (208), 207 states have call successors, (208) [2022-11-02 21:12:42,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1003 states to 1003 states and 1386 transitions. [2022-11-02 21:12:42,939 INFO L78 Accepts]: Start accepts. Automaton has 1003 states and 1386 transitions. Word has length 12 [2022-11-02 21:12:42,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:12:42,940 INFO L495 AbstractCegarLoop]: Abstraction has 1003 states and 1386 transitions. [2022-11-02 21:12:42,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-02 21:12:42,940 INFO L276 IsEmpty]: Start isEmpty. Operand 1003 states and 1386 transitions. [2022-11-02 21:12:42,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-02 21:12:42,941 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:12:42,941 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:12:42,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 21:12:42,943 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:12:42,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:12:42,944 INFO L85 PathProgramCache]: Analyzing trace with hash -367903860, now seen corresponding path program 1 times [2022-11-02 21:12:42,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:12:42,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872122217] [2022-11-02 21:12:42,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:12:42,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:12:43,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:43,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 21:12:43,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:43,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:12:43,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:12:43,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872122217] [2022-11-02 21:12:43,704 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872122217] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:12:43,704 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:12:43,704 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:12:43,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156063454] [2022-11-02 21:12:43,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:12:43,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:12:43,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:12:43,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:12:43,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:12:43,709 INFO L87 Difference]: Start difference. First operand 1003 states and 1386 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-02 21:12:45,864 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 21:12:47,934 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 21:12:52,139 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 21:12:53,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:12:53,021 INFO L93 Difference]: Finished difference Result 1009 states and 1391 transitions. [2022-11-02 21:12:53,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:12:53,025 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2022-11-02 21:12:53,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:12:53,032 INFO L225 Difference]: With dead ends: 1009 [2022-11-02 21:12:53,032 INFO L226 Difference]: Without dead ends: 1006 [2022-11-02 21:12:53,033 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:12:53,034 INFO L413 NwaCegarLoop]: 1115 mSDtfsCounter, 1421 mSDsluCounter, 461 mSDsCounter, 0 mSdLazyCounter, 416 mSolverCounterSat, 390 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1540 SdHoareTripleChecker+Valid, 1576 SdHoareTripleChecker+Invalid, 809 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 390 IncrementalHoareTripleChecker+Valid, 416 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:12:53,036 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1540 Valid, 1576 Invalid, 809 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [390 Valid, 416 Invalid, 3 Unknown, 0 Unchecked, 9.1s Time] [2022-11-02 21:12:53,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1006 states. [2022-11-02 21:12:53,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1006 to 1002. [2022-11-02 21:12:53,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1002 states, 716 states have (on average 1.344972067039106) internal successors, (963), 724 states have internal predecessors, (963), 213 states have call successors, (213), 74 states have call predecessors, (213), 72 states have return successors, (208), 207 states have call predecessors, (208), 207 states have call successors, (208) [2022-11-02 21:12:53,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1002 states to 1002 states and 1384 transitions. [2022-11-02 21:12:53,114 INFO L78 Accepts]: Start accepts. Automaton has 1002 states and 1384 transitions. Word has length 13 [2022-11-02 21:12:53,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:12:53,114 INFO L495 AbstractCegarLoop]: Abstraction has 1002 states and 1384 transitions. [2022-11-02 21:12:53,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-02 21:12:53,115 INFO L276 IsEmpty]: Start isEmpty. Operand 1002 states and 1384 transitions. [2022-11-02 21:12:53,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-02 21:12:53,115 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:12:53,115 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:12:53,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 21:12:53,116 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:12:53,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:12:53,116 INFO L85 PathProgramCache]: Analyzing trace with hash 1478476831, now seen corresponding path program 1 times [2022-11-02 21:12:53,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:12:53,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531809270] [2022-11-02 21:12:53,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:12:53,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:12:53,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:53,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 21:12:53,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:53,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:12:53,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:12:53,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531809270] [2022-11-02 21:12:53,869 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531809270] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:12:53,869 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:12:53,869 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:12:53,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144664405] [2022-11-02 21:12:53,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:12:53,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:12:53,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:12:53,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:12:53,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:12:53,872 INFO L87 Difference]: Start difference. First operand 1002 states and 1384 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-02 21:12:56,018 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 21:12:58,104 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 21:13:02,024 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 21:13:02,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:13:02,869 INFO L93 Difference]: Finished difference Result 1008 states and 1389 transitions. [2022-11-02 21:13:02,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:13:02,870 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2022-11-02 21:13:02,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:13:02,876 INFO L225 Difference]: With dead ends: 1008 [2022-11-02 21:13:02,876 INFO L226 Difference]: Without dead ends: 1005 [2022-11-02 21:13:02,877 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:13:02,878 INFO L413 NwaCegarLoop]: 1114 mSDtfsCounter, 1418 mSDsluCounter, 461 mSDsCounter, 0 mSdLazyCounter, 415 mSolverCounterSat, 388 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1537 SdHoareTripleChecker+Valid, 1575 SdHoareTripleChecker+Invalid, 806 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 388 IncrementalHoareTripleChecker+Valid, 415 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2022-11-02 21:13:02,879 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1537 Valid, 1575 Invalid, 806 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [388 Valid, 415 Invalid, 3 Unknown, 0 Unchecked, 8.8s Time] [2022-11-02 21:13:02,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1005 states. [2022-11-02 21:13:02,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1005 to 1001. [2022-11-02 21:13:02,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1001 states, 716 states have (on average 1.3435754189944134) internal successors, (962), 723 states have internal predecessors, (962), 212 states have call successors, (212), 74 states have call predecessors, (212), 72 states have return successors, (208), 207 states have call predecessors, (208), 207 states have call successors, (208) [2022-11-02 21:13:02,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1001 states to 1001 states and 1382 transitions. [2022-11-02 21:13:02,946 INFO L78 Accepts]: Start accepts. Automaton has 1001 states and 1382 transitions. Word has length 14 [2022-11-02 21:13:02,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:13:02,946 INFO L495 AbstractCegarLoop]: Abstraction has 1001 states and 1382 transitions. [2022-11-02 21:13:02,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-02 21:13:02,947 INFO L276 IsEmpty]: Start isEmpty. Operand 1001 states and 1382 transitions. [2022-11-02 21:13:02,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-02 21:13:02,947 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:13:02,948 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:13:02,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 21:13:02,948 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:13:02,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:13:02,949 INFO L85 PathProgramCache]: Analyzing trace with hash -1413259025, now seen corresponding path program 1 times [2022-11-02 21:13:02,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:13:02,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720276728] [2022-11-02 21:13:02,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:13:02,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:13:03,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:13:03,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 21:13:03,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:13:03,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:13:03,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:13:03,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720276728] [2022-11-02 21:13:03,622 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720276728] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:13:03,622 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:13:03,622 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:13:03,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915475090] [2022-11-02 21:13:03,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:13:03,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:13:03,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:13:03,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:13:03,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:13:03,624 INFO L87 Difference]: Start difference. First operand 1001 states and 1382 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-02 21:13:05,766 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 21:13:07,856 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 21:13:11,973 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 21:13:12,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:13:12,824 INFO L93 Difference]: Finished difference Result 1007 states and 1387 transitions. [2022-11-02 21:13:12,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:13:12,825 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2022-11-02 21:13:12,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:13:12,831 INFO L225 Difference]: With dead ends: 1007 [2022-11-02 21:13:12,832 INFO L226 Difference]: Without dead ends: 1004 [2022-11-02 21:13:12,833 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:13:12,834 INFO L413 NwaCegarLoop]: 1113 mSDtfsCounter, 1415 mSDsluCounter, 461 mSDsCounter, 0 mSdLazyCounter, 414 mSolverCounterSat, 386 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1534 SdHoareTripleChecker+Valid, 1574 SdHoareTripleChecker+Invalid, 803 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 386 IncrementalHoareTripleChecker+Valid, 414 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:13:12,834 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1534 Valid, 1574 Invalid, 803 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [386 Valid, 414 Invalid, 3 Unknown, 0 Unchecked, 9.0s Time] [2022-11-02 21:13:12,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1004 states. [2022-11-02 21:13:12,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1004 to 1000. [2022-11-02 21:13:12,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1000 states, 716 states have (on average 1.3421787709497206) internal successors, (961), 722 states have internal predecessors, (961), 211 states have call successors, (211), 74 states have call predecessors, (211), 72 states have return successors, (208), 207 states have call predecessors, (208), 207 states have call successors, (208) [2022-11-02 21:13:12,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1000 states to 1000 states and 1380 transitions. [2022-11-02 21:13:12,903 INFO L78 Accepts]: Start accepts. Automaton has 1000 states and 1380 transitions. Word has length 15 [2022-11-02 21:13:12,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:13:12,903 INFO L495 AbstractCegarLoop]: Abstraction has 1000 states and 1380 transitions. [2022-11-02 21:13:12,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-02 21:13:12,903 INFO L276 IsEmpty]: Start isEmpty. Operand 1000 states and 1380 transitions. [2022-11-02 21:13:12,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-02 21:13:12,904 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:13:12,904 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:13:12,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-02 21:13:12,905 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:13:12,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:13:12,905 INFO L85 PathProgramCache]: Analyzing trace with hash -862752478, now seen corresponding path program 1 times [2022-11-02 21:13:12,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:13:12,906 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564395267] [2022-11-02 21:13:12,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:13:12,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:13:13,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:13:13,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 21:13:13,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:13:13,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:13:13,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:13:13,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564395267] [2022-11-02 21:13:13,627 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564395267] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:13:13,627 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:13:13,628 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:13:13,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119109465] [2022-11-02 21:13:13,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:13:13,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:13:13,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:13:13,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:13:13,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:13:13,631 INFO L87 Difference]: Start difference. First operand 1000 states and 1380 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-02 21:13:15,762 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 21:13:17,817 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 21:13:21,814 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 21:13:22,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:13:22,582 INFO L93 Difference]: Finished difference Result 1006 states and 1385 transitions. [2022-11-02 21:13:22,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:13:22,583 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2022-11-02 21:13:22,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:13:22,587 INFO L225 Difference]: With dead ends: 1006 [2022-11-02 21:13:22,588 INFO L226 Difference]: Without dead ends: 997 [2022-11-02 21:13:22,588 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:13:22,589 INFO L413 NwaCegarLoop]: 1112 mSDtfsCounter, 1412 mSDsluCounter, 461 mSDsCounter, 0 mSdLazyCounter, 413 mSolverCounterSat, 384 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1531 SdHoareTripleChecker+Valid, 1573 SdHoareTripleChecker+Invalid, 800 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 384 IncrementalHoareTripleChecker+Valid, 413 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time [2022-11-02 21:13:22,589 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1531 Valid, 1573 Invalid, 800 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [384 Valid, 413 Invalid, 3 Unknown, 0 Unchecked, 8.7s Time] [2022-11-02 21:13:22,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 997 states. [2022-11-02 21:13:22,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 997 to 993. [2022-11-02 21:13:22,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 993 states, 711 states have (on average 1.3417721518987342) internal successors, (954), 716 states have internal predecessors, (954), 209 states have call successors, (209), 73 states have call predecessors, (209), 72 states have return successors, (208), 207 states have call predecessors, (208), 207 states have call successors, (208) [2022-11-02 21:13:22,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 993 states to 993 states and 1371 transitions. [2022-11-02 21:13:22,673 INFO L78 Accepts]: Start accepts. Automaton has 993 states and 1371 transitions. Word has length 16 [2022-11-02 21:13:22,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:13:22,673 INFO L495 AbstractCegarLoop]: Abstraction has 993 states and 1371 transitions. [2022-11-02 21:13:22,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-02 21:13:22,674 INFO L276 IsEmpty]: Start isEmpty. Operand 993 states and 1371 transitions. [2022-11-02 21:13:22,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-02 21:13:22,679 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:13:22,679 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:13:22,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-02 21:13:22,680 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:13:22,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:13:22,680 INFO L85 PathProgramCache]: Analyzing trace with hash -1003721069, now seen corresponding path program 1 times [2022-11-02 21:13:22,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:13:22,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776876460] [2022-11-02 21:13:22,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:13:22,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:13:22,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:13:24,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 21:13:24,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:13:24,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-02 21:13:24,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:13:24,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-02 21:13:24,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:13:24,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-02 21:13:24,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:13:24,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:13:24,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:13:24,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776876460] [2022-11-02 21:13:24,177 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776876460] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:13:24,177 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:13:24,177 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 21:13:24,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488633110] [2022-11-02 21:13:24,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:13:24,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 21:13:24,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:13:24,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 21:13:24,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-02 21:13:24,179 INFO L87 Difference]: Start difference. First operand 993 states and 1371 transitions. Second operand has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-02 21:13:26,318 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 21:13:28,376 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 21:13:30,583 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 21:13:34,956 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 21:13:40,050 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 21:13:41,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:13:41,786 INFO L93 Difference]: Finished difference Result 1984 states and 2740 transitions. [2022-11-02 21:13:41,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:13:41,786 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 51 [2022-11-02 21:13:41,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:13:41,792 INFO L225 Difference]: With dead ends: 1984 [2022-11-02 21:13:41,792 INFO L226 Difference]: Without dead ends: 997 [2022-11-02 21:13:41,796 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:13:41,797 INFO L413 NwaCegarLoop]: 1192 mSDtfsCounter, 1392 mSDsluCounter, 1611 mSDsCounter, 0 mSdLazyCounter, 1132 mSolverCounterSat, 387 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1510 SdHoareTripleChecker+Valid, 2803 SdHoareTripleChecker+Invalid, 1524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 387 IncrementalHoareTripleChecker+Valid, 1132 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.3s IncrementalHoareTripleChecker+Time [2022-11-02 21:13:41,797 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1510 Valid, 2803 Invalid, 1524 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [387 Valid, 1132 Invalid, 5 Unknown, 0 Unchecked, 17.3s Time] [2022-11-02 21:13:41,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 997 states. [2022-11-02 21:13:41,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 997 to 993. [2022-11-02 21:13:41,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 993 states, 711 states have (on average 1.3375527426160339) internal successors, (951), 716 states have internal predecessors, (951), 209 states have call successors, (209), 73 states have call predecessors, (209), 72 states have return successors, (208), 207 states have call predecessors, (208), 207 states have call successors, (208) [2022-11-02 21:13:41,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 993 states to 993 states and 1368 transitions. [2022-11-02 21:13:41,868 INFO L78 Accepts]: Start accepts. Automaton has 993 states and 1368 transitions. Word has length 51 [2022-11-02 21:13:41,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:13:41,869 INFO L495 AbstractCegarLoop]: Abstraction has 993 states and 1368 transitions. [2022-11-02 21:13:41,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-02 21:13:41,869 INFO L276 IsEmpty]: Start isEmpty. Operand 993 states and 1368 transitions. [2022-11-02 21:13:41,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-02 21:13:41,872 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:13:41,873 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:13:41,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-02 21:13:41,873 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:13:41,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:13:41,874 INFO L85 PathProgramCache]: Analyzing trace with hash -863172459, now seen corresponding path program 1 times [2022-11-02 21:13:41,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:13:41,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109709756] [2022-11-02 21:13:41,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:13:41,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:13:42,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:13:42,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 21:13:42,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:13:42,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-02 21:13:42,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:13:42,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-02 21:13:42,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:13:43,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-02 21:13:43,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:13:43,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:13:43,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:13:43,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109709756] [2022-11-02 21:13:43,050 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109709756] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:13:43,050 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:13:43,050 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:13:43,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913188464] [2022-11-02 21:13:43,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:13:43,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:13:43,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:13:43,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:13:43,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:13:43,053 INFO L87 Difference]: Start difference. First operand 993 states and 1368 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-02 21:13:45,188 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 21:13:47,240 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 21:13:49,265 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 21:13:51,350 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 21:13:56,628 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 21:13:57,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:13:57,643 INFO L93 Difference]: Finished difference Result 1000 states and 1374 transitions. [2022-11-02 21:13:57,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:13:57,644 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 51 [2022-11-02 21:13:57,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:13:57,649 INFO L225 Difference]: With dead ends: 1000 [2022-11-02 21:13:57,650 INFO L226 Difference]: Without dead ends: 997 [2022-11-02 21:13:57,650 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-02 21:13:57,651 INFO L413 NwaCegarLoop]: 1232 mSDtfsCounter, 748 mSDsluCounter, 1539 mSDsCounter, 0 mSdLazyCounter, 794 mSolverCounterSat, 314 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 817 SdHoareTripleChecker+Valid, 2771 SdHoareTripleChecker+Invalid, 1113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 314 IncrementalHoareTripleChecker+Valid, 794 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.4s IncrementalHoareTripleChecker+Time [2022-11-02 21:13:57,651 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [817 Valid, 2771 Invalid, 1113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [314 Valid, 794 Invalid, 5 Unknown, 0 Unchecked, 14.4s Time] [2022-11-02 21:13:57,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 997 states. [2022-11-02 21:13:57,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 997 to 993. [2022-11-02 21:13:57,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 993 states, 711 states have (on average 1.3361462728551337) internal successors, (950), 716 states have internal predecessors, (950), 209 states have call successors, (209), 73 states have call predecessors, (209), 72 states have return successors, (208), 207 states have call predecessors, (208), 207 states have call successors, (208) [2022-11-02 21:13:57,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 993 states to 993 states and 1367 transitions. [2022-11-02 21:13:57,721 INFO L78 Accepts]: Start accepts. Automaton has 993 states and 1367 transitions. Word has length 51 [2022-11-02 21:13:57,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:13:57,722 INFO L495 AbstractCegarLoop]: Abstraction has 993 states and 1367 transitions. [2022-11-02 21:13:57,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-02 21:13:57,722 INFO L276 IsEmpty]: Start isEmpty. Operand 993 states and 1367 transitions. [2022-11-02 21:13:57,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-11-02 21:13:57,727 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:13:57,727 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:13:57,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-02 21:13:57,728 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:13:57,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:13:57,728 INFO L85 PathProgramCache]: Analyzing trace with hash -1606232942, now seen corresponding path program 1 times [2022-11-02 21:13:57,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:13:57,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958181194] [2022-11-02 21:13:57,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:13:57,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:13:57,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:13:58,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 21:13:58,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:13:58,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-02 21:13:58,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:13:59,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-02 21:13:59,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:13:59,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-02 21:13:59,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:13:59,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-02 21:13:59,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:13:59,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 21:13:59,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:13:59,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 21:13:59,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:13:59,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-02 21:13:59,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:13:59,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-02 21:13:59,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:13:59,528 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-02 21:13:59,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:13:59,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958181194] [2022-11-02 21:13:59,529 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958181194] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:13:59,529 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:13:59,529 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 21:13:59,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553342760] [2022-11-02 21:13:59,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:13:59,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 21:13:59,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:13:59,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 21:13:59,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:13:59,531 INFO L87 Difference]: Start difference. First operand 993 states and 1367 transitions. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 4 states have internal predecessors, (59), 3 states have call successors, (11), 6 states have call predecessors, (11), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-02 21:14:01,678 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 21:14:03,710 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 21:14:06,285 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 21:14:11,484 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 21:14:13,955 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 21:14:20,629 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 21:14:23,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:14:23,272 INFO L93 Difference]: Finished difference Result 2044 states and 2818 transitions. [2022-11-02 21:14:23,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 21:14:23,273 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 4 states have internal predecessors, (59), 3 states have call successors, (11), 6 states have call predecessors, (11), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 82 [2022-11-02 21:14:23,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:14:23,278 INFO L225 Difference]: With dead ends: 2044 [2022-11-02 21:14:23,279 INFO L226 Difference]: Without dead ends: 1057 [2022-11-02 21:14:23,282 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2022-11-02 21:14:23,283 INFO L413 NwaCegarLoop]: 1171 mSDtfsCounter, 1995 mSDsluCounter, 1506 mSDsCounter, 0 mSdLazyCounter, 1656 mSolverCounterSat, 1189 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2146 SdHoareTripleChecker+Valid, 2677 SdHoareTripleChecker+Invalid, 2851 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1189 IncrementalHoareTripleChecker+Valid, 1656 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:14:23,284 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2146 Valid, 2677 Invalid, 2851 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1189 Valid, 1656 Invalid, 6 Unknown, 0 Unchecked, 23.1s Time] [2022-11-02 21:14:23,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1057 states. [2022-11-02 21:14:23,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1057 to 996. [2022-11-02 21:14:23,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 996 states, 713 states have (on average 1.332398316970547) internal successors, (950), 718 states have internal predecessors, (950), 209 states have call successors, (209), 74 states have call predecessors, (209), 73 states have return successors, (208), 207 states have call predecessors, (208), 207 states have call successors, (208) [2022-11-02 21:14:23,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 996 states to 996 states and 1367 transitions. [2022-11-02 21:14:23,364 INFO L78 Accepts]: Start accepts. Automaton has 996 states and 1367 transitions. Word has length 82 [2022-11-02 21:14:23,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:14:23,364 INFO L495 AbstractCegarLoop]: Abstraction has 996 states and 1367 transitions. [2022-11-02 21:14:23,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 4 states have internal predecessors, (59), 3 states have call successors, (11), 6 states have call predecessors, (11), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-02 21:14:23,365 INFO L276 IsEmpty]: Start isEmpty. Operand 996 states and 1367 transitions. [2022-11-02 21:14:23,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-11-02 21:14:23,369 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:14:23,369 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:14:23,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-02 21:14:23,369 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:14:23,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:14:23,370 INFO L85 PathProgramCache]: Analyzing trace with hash 376007762, now seen corresponding path program 1 times [2022-11-02 21:14:23,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:14:23,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902055086] [2022-11-02 21:14:23,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:14:23,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:14:23,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:14:27,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 21:14:27,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:14:27,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-02 21:14:27,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:14:27,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-02 21:14:27,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:14:27,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-02 21:14:27,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:14:27,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-02 21:14:27,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:14:29,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 21:14:29,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:14:30,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 21:14:30,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:14:30,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-02 21:14:30,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:14:30,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-02 21:14:30,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:14:30,786 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 21:14:30,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:14:30,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902055086] [2022-11-02 21:14:30,787 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902055086] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:14:30,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [128660750] [2022-11-02 21:14:30,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:14:30,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:14:30,788 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19080a43-bfb4-4206-bf86-7325f959a0d7/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:14:30,794 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19080a43-bfb4-4206-bf86-7325f959a0d7/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:14:30,815 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19080a43-bfb4-4206-bf86-7325f959a0d7/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process