./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem13_label41.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c9698f3-2442-457f-a4fa-cfd4ddb71c65/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c9698f3-2442-457f-a4fa-cfd4ddb71c65/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_3c9698f3-2442-457f-a4fa-cfd4ddb71c65/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c9698f3-2442-457f-a4fa-cfd4ddb71c65/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem13_label41.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c9698f3-2442-457f-a4fa-cfd4ddb71c65/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c9698f3-2442-457f-a4fa-cfd4ddb71c65/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 32bit --witnessprinter.graph.data.programhash cd32d11e922bf190beba4edd20222f6e5b4dfc210b3394b8307f2a4d7f2efc9e --- 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 21:05:23,730 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 21:05:23,734 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 21:05:23,783 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 21:05:23,783 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 21:05:23,785 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 21:05:23,786 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 21:05:23,789 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 21:05:23,791 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 21:05:23,792 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 21:05:23,794 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 21:05:23,795 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 21:05:23,795 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 21:05:23,797 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 21:05:23,798 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 21:05:23,800 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 21:05:23,801 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 21:05:23,802 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 21:05:23,804 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 21:05:23,807 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 21:05:23,809 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 21:05:23,810 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 21:05:23,812 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 21:05:23,813 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 21:05:23,817 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 21:05:23,818 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 21:05:23,818 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 21:05:23,819 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 21:05:23,820 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 21:05:23,821 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 21:05:23,822 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 21:05:23,823 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 21:05:23,824 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 21:05:23,826 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 21:05:23,827 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 21:05:23,828 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 21:05:23,829 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 21:05:23,829 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 21:05:23,829 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 21:05:23,831 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 21:05:23,831 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 21:05:23,835 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c9698f3-2442-457f-a4fa-cfd4ddb71c65/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-02 21:05:23,899 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 21:05:23,899 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 21:05:23,900 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 21:05:23,900 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 21:05:23,901 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 21:05:23,901 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 21:05:23,902 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 21:05:23,902 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 21:05:23,903 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 21:05:23,903 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 21:05:23,904 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 21:05:23,904 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 21:05:23,904 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 21:05:23,904 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 21:05:23,905 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 21:05:23,905 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 21:05:23,905 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 21:05:23,906 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 21:05:23,906 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 21:05:23,906 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 21:05:23,907 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 21:05:23,907 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 21:05:23,907 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 21:05:23,908 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 21:05:23,908 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:05:23,908 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 21:05:23,909 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 21:05:23,909 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 21:05:23,909 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 21:05:23,910 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 21:05:23,910 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 21:05:23,910 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 21:05:23,911 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 21:05:23,911 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_3c9698f3-2442-457f-a4fa-cfd4ddb71c65/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c9698f3-2442-457f-a4fa-cfd4ddb71c65/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cd32d11e922bf190beba4edd20222f6e5b4dfc210b3394b8307f2a4d7f2efc9e [2022-11-02 21:05:24,252 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 21:05:24,290 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 21:05:24,293 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 21:05:24,295 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 21:05:24,298 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 21:05:24,300 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c9698f3-2442-457f-a4fa-cfd4ddb71c65/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/eca-rers2012/Problem13_label41.c [2022-11-02 21:05:24,413 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c9698f3-2442-457f-a4fa-cfd4ddb71c65/bin/uautomizer-Dbtcem3rbc/data/1d6e75d26/ffbcf8c4ee5544149d23a4d7114c3123/FLAGc196f0fdf [2022-11-02 21:05:25,395 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 21:05:25,395 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c9698f3-2442-457f-a4fa-cfd4ddb71c65/sv-benchmarks/c/eca-rers2012/Problem13_label41.c [2022-11-02 21:05:25,429 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c9698f3-2442-457f-a4fa-cfd4ddb71c65/bin/uautomizer-Dbtcem3rbc/data/1d6e75d26/ffbcf8c4ee5544149d23a4d7114c3123/FLAGc196f0fdf [2022-11-02 21:05:25,841 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c9698f3-2442-457f-a4fa-cfd4ddb71c65/bin/uautomizer-Dbtcem3rbc/data/1d6e75d26/ffbcf8c4ee5544149d23a4d7114c3123 [2022-11-02 21:05:25,843 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 21:05:25,845 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 21:05:25,846 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 21:05:25,846 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 21:05:25,850 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 21:05:25,851 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:05:25" (1/1) ... [2022-11-02 21:05:25,852 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69a6fda1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:05:25, skipping insertion in model container [2022-11-02 21:05:25,852 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:05:25" (1/1) ... [2022-11-02 21:05:25,859 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 21:05:26,040 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 21:05:26,430 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_3c9698f3-2442-457f-a4fa-cfd4ddb71c65/sv-benchmarks/c/eca-rers2012/Problem13_label41.c[6347,6360] [2022-11-02 21:05:27,952 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:05:27,963 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 21:05:28,008 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_3c9698f3-2442-457f-a4fa-cfd4ddb71c65/sv-benchmarks/c/eca-rers2012/Problem13_label41.c[6347,6360] [2022-11-02 21:05:28,861 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:05:28,887 INFO L208 MainTranslator]: Completed translation [2022-11-02 21:05:28,888 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:05:28 WrapperNode [2022-11-02 21:05:28,888 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 21:05:28,889 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 21:05:28,889 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 21:05:28,890 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 21:05:28,898 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:05:28" (1/1) ... [2022-11-02 21:05:28,990 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:05:28" (1/1) ... [2022-11-02 21:05:29,781 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 5583 [2022-11-02 21:05:29,781 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 21:05:29,782 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 21:05:29,783 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 21:05:29,783 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 21:05:29,794 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:05:28" (1/1) ... [2022-11-02 21:05:29,794 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:05:28" (1/1) ... [2022-11-02 21:05:30,000 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:05:28" (1/1) ... [2022-11-02 21:05:30,010 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:05:28" (1/1) ... [2022-11-02 21:05:30,337 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:05:28" (1/1) ... [2022-11-02 21:05:30,374 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:05:28" (1/1) ... [2022-11-02 21:05:30,396 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:05:28" (1/1) ... [2022-11-02 21:05:30,414 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:05:28" (1/1) ... [2022-11-02 21:05:30,548 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 21:05:30,549 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 21:05:30,549 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 21:05:30,549 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 21:05:30,570 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:05:28" (1/1) ... [2022-11-02 21:05:30,578 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:05:30,607 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c9698f3-2442-457f-a4fa-cfd4ddb71c65/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:05:30,644 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c9698f3-2442-457f-a4fa-cfd4ddb71c65/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 21:05:30,722 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c9698f3-2442-457f-a4fa-cfd4ddb71c65/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 21:05:30,747 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 21:05:30,747 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 21:05:30,748 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 21:05:30,748 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 21:05:30,852 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 21:05:30,860 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 21:05:39,105 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 21:05:39,133 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 21:05:39,134 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-02 21:05:39,139 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:05:39 BoogieIcfgContainer [2022-11-02 21:05:39,139 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 21:05:39,146 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 21:05:39,146 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 21:05:39,151 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 21:05:39,151 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 09:05:25" (1/3) ... [2022-11-02 21:05:39,153 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14b22122 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:05:39, skipping insertion in model container [2022-11-02 21:05:39,153 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:05:28" (2/3) ... [2022-11-02 21:05:39,153 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14b22122 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:05:39, skipping insertion in model container [2022-11-02 21:05:39,154 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:05:39" (3/3) ... [2022-11-02 21:05:39,155 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label41.c [2022-11-02 21:05:39,180 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 21:05:39,180 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 21:05:39,294 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 21:05:39,304 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;@4d4d3d96, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 21:05:39,305 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 21:05:39,316 INFO L276 IsEmpty]: Start isEmpty. Operand has 1098 states, 1096 states have (on average 1.8275547445255473) internal successors, (2003), 1097 states have internal predecessors, (2003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:39,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-02 21:05:39,325 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:05:39,326 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] [2022-11-02 21:05:39,327 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:05:39,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:05:39,333 INFO L85 PathProgramCache]: Analyzing trace with hash 626000386, now seen corresponding path program 1 times [2022-11-02 21:05:39,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:05:39,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285312766] [2022-11-02 21:05:39,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:05:39,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:05:39,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:39,970 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 21:05:39,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:05:39,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285312766] [2022-11-02 21:05:39,972 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285312766] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:05:39,973 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:05:39,973 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:05:39,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875104797] [2022-11-02 21:05:39,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:05:39,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:05:39,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:05:40,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:05:40,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:05:40,027 INFO L87 Difference]: Start difference. First operand has 1098 states, 1096 states have (on average 1.8275547445255473) internal successors, (2003), 1097 states have internal predecessors, (2003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:50,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:05:50,629 INFO L93 Difference]: Finished difference Result 3829 states and 7206 transitions. [2022-11-02 21:05:50,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 21:05:50,633 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2022-11-02 21:05:50,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:05:50,675 INFO L225 Difference]: With dead ends: 3829 [2022-11-02 21:05:50,676 INFO L226 Difference]: Without dead ends: 2664 [2022-11-02 21:05:50,688 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 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 21:05:50,693 INFO L413 NwaCegarLoop]: 761 mSDtfsCounter, 2702 mSDsluCounter, 306 mSDsCounter, 0 mSdLazyCounter, 4246 mSolverCounterSat, 1610 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2702 SdHoareTripleChecker+Valid, 1067 SdHoareTripleChecker+Invalid, 5856 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1610 IncrementalHoareTripleChecker+Valid, 4246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:05:50,694 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2702 Valid, 1067 Invalid, 5856 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1610 Valid, 4246 Invalid, 0 Unknown, 0 Unchecked, 10.1s Time] [2022-11-02 21:05:50,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2664 states. [2022-11-02 21:05:50,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2664 to 2663. [2022-11-02 21:05:50,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2663 states, 2662 states have (on average 1.460931630353118) internal successors, (3889), 2662 states have internal predecessors, (3889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:50,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2663 states to 2663 states and 3889 transitions. [2022-11-02 21:05:50,888 INFO L78 Accepts]: Start accepts. Automaton has 2663 states and 3889 transitions. Word has length 44 [2022-11-02 21:05:50,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:05:50,889 INFO L495 AbstractCegarLoop]: Abstraction has 2663 states and 3889 transitions. [2022-11-02 21:05:50,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:50,891 INFO L276 IsEmpty]: Start isEmpty. Operand 2663 states and 3889 transitions. [2022-11-02 21:05:50,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-11-02 21:05:50,903 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:05:50,904 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:05:50,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 21:05:50,905 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:05:50,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:05:50,906 INFO L85 PathProgramCache]: Analyzing trace with hash 1750802861, now seen corresponding path program 1 times [2022-11-02 21:05:50,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:05:50,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68586951] [2022-11-02 21:05:50,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:05:50,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:05:51,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:51,502 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:05:51,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:05:51,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68586951] [2022-11-02 21:05:51,503 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68586951] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:05:51,504 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:05:51,504 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:05:51,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451702237] [2022-11-02 21:05:51,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:05:51,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:05:51,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:05:51,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:05:51,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:05:51,510 INFO L87 Difference]: Start difference. First operand 2663 states and 3889 transitions. Second operand has 4 states, 4 states have (on average 42.25) internal successors, (169), 3 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:02,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:06:02,075 INFO L93 Difference]: Finished difference Result 7864 states and 12669 transitions. [2022-11-02 21:06:02,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 21:06:02,082 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 42.25) internal successors, (169), 3 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 169 [2022-11-02 21:06:02,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:06:02,105 INFO L225 Difference]: With dead ends: 7864 [2022-11-02 21:06:02,106 INFO L226 Difference]: Without dead ends: 5990 [2022-11-02 21:06:02,109 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:06:02,111 INFO L413 NwaCegarLoop]: 894 mSDtfsCounter, 1635 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 6333 mSolverCounterSat, 831 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1635 SdHoareTripleChecker+Valid, 1191 SdHoareTripleChecker+Invalid, 7164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 831 IncrementalHoareTripleChecker+Valid, 6333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:06:02,111 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1635 Valid, 1191 Invalid, 7164 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [831 Valid, 6333 Invalid, 0 Unknown, 0 Unchecked, 10.2s Time] [2022-11-02 21:06:02,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5990 states. [2022-11-02 21:06:02,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5990 to 5859. [2022-11-02 21:06:02,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5859 states, 5858 states have (on average 1.4452031410037556) internal successors, (8466), 5858 states have internal predecessors, (8466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:02,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5859 states to 5859 states and 8466 transitions. [2022-11-02 21:06:02,225 INFO L78 Accepts]: Start accepts. Automaton has 5859 states and 8466 transitions. Word has length 169 [2022-11-02 21:06:02,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:06:02,226 INFO L495 AbstractCegarLoop]: Abstraction has 5859 states and 8466 transitions. [2022-11-02 21:06:02,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.25) internal successors, (169), 3 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:02,226 INFO L276 IsEmpty]: Start isEmpty. Operand 5859 states and 8466 transitions. [2022-11-02 21:06:02,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2022-11-02 21:06:02,229 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:06:02,230 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:06:02,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 21:06:02,230 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:06:02,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:06:02,231 INFO L85 PathProgramCache]: Analyzing trace with hash 459734874, now seen corresponding path program 1 times [2022-11-02 21:06:02,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:06:02,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579170927] [2022-11-02 21:06:02,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:06:02,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:06:02,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:06:02,621 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-11-02 21:06:02,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:06:02,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579170927] [2022-11-02 21:06:02,623 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579170927] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:06:02,624 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:06:02,625 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 21:06:02,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795970042] [2022-11-02 21:06:02,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:06:02,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:06:02,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:06:02,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:06:02,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:06:02,630 INFO L87 Difference]: Start difference. First operand 5859 states and 8466 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:08,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:06:08,093 INFO L93 Difference]: Finished difference Result 15687 states and 23390 transitions. [2022-11-02 21:06:08,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:06:08,094 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 211 [2022-11-02 21:06:08,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:06:08,135 INFO L225 Difference]: With dead ends: 15687 [2022-11-02 21:06:08,136 INFO L226 Difference]: Without dead ends: 10617 [2022-11-02 21:06:08,145 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:06:08,146 INFO L413 NwaCegarLoop]: 785 mSDtfsCounter, 919 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 2554 mSolverCounterSat, 756 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 919 SdHoareTripleChecker+Valid, 918 SdHoareTripleChecker+Invalid, 3310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 756 IncrementalHoareTripleChecker+Valid, 2554 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2022-11-02 21:06:08,147 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [919 Valid, 918 Invalid, 3310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [756 Valid, 2554 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2022-11-02 21:06:08,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10617 states. [2022-11-02 21:06:08,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10617 to 10608. [2022-11-02 21:06:08,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10608 states, 10607 states have (on average 1.3551428302064674) internal successors, (14374), 10607 states have internal predecessors, (14374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:08,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10608 states to 10608 states and 14374 transitions. [2022-11-02 21:06:08,387 INFO L78 Accepts]: Start accepts. Automaton has 10608 states and 14374 transitions. Word has length 211 [2022-11-02 21:06:08,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:06:08,388 INFO L495 AbstractCegarLoop]: Abstraction has 10608 states and 14374 transitions. [2022-11-02 21:06:08,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:08,389 INFO L276 IsEmpty]: Start isEmpty. Operand 10608 states and 14374 transitions. [2022-11-02 21:06:08,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2022-11-02 21:06:08,392 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:06:08,393 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:06:08,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 21:06:08,393 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:06:08,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:06:08,394 INFO L85 PathProgramCache]: Analyzing trace with hash -2137410665, now seen corresponding path program 1 times [2022-11-02 21:06:08,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:06:08,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69634947] [2022-11-02 21:06:08,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:06:08,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:06:08,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:06:08,693 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-11-02 21:06:08,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:06:08,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69634947] [2022-11-02 21:06:08,694 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69634947] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:06:08,694 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:06:08,694 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 21:06:08,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381319660] [2022-11-02 21:06:08,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:06:08,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:06:08,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:06:08,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:06:08,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:06:08,697 INFO L87 Difference]: Start difference. First operand 10608 states and 14374 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:14,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:06:14,203 INFO L93 Difference]: Finished difference Result 28351 states and 39240 transitions. [2022-11-02 21:06:14,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:06:14,210 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 225 [2022-11-02 21:06:14,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:06:14,252 INFO L225 Difference]: With dead ends: 28351 [2022-11-02 21:06:14,252 INFO L226 Difference]: Without dead ends: 18532 [2022-11-02 21:06:14,264 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:06:14,265 INFO L413 NwaCegarLoop]: 448 mSDtfsCounter, 909 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 2872 mSolverCounterSat, 544 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 909 SdHoareTripleChecker+Valid, 613 SdHoareTripleChecker+Invalid, 3416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 544 IncrementalHoareTripleChecker+Valid, 2872 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2022-11-02 21:06:14,266 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [909 Valid, 613 Invalid, 3416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [544 Valid, 2872 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2022-11-02 21:06:14,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18532 states. [2022-11-02 21:06:14,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18532 to 18523. [2022-11-02 21:06:14,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18523 states, 18522 states have (on average 1.3251268761472843) internal successors, (24544), 18522 states have internal predecessors, (24544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:14,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18523 states to 18523 states and 24544 transitions. [2022-11-02 21:06:14,617 INFO L78 Accepts]: Start accepts. Automaton has 18523 states and 24544 transitions. Word has length 225 [2022-11-02 21:06:14,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:06:14,618 INFO L495 AbstractCegarLoop]: Abstraction has 18523 states and 24544 transitions. [2022-11-02 21:06:14,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:14,619 INFO L276 IsEmpty]: Start isEmpty. Operand 18523 states and 24544 transitions. [2022-11-02 21:06:14,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2022-11-02 21:06:14,623 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:06:14,623 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:06:14,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-02 21:06:14,624 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:06:14,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:06:14,625 INFO L85 PathProgramCache]: Analyzing trace with hash 253132810, now seen corresponding path program 1 times [2022-11-02 21:06:14,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:06:14,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948597479] [2022-11-02 21:06:14,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:06:14,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:06:14,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:06:14,875 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 178 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:06:14,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:06:14,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948597479] [2022-11-02 21:06:14,876 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948597479] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:06:14,876 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:06:14,876 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:06:14,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684498710] [2022-11-02 21:06:14,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:06:14,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:06:14,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:06:14,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:06:14,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:06:14,880 INFO L87 Difference]: Start difference. First operand 18523 states and 24544 transitions. Second operand has 3 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:19,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:06:19,963 INFO L93 Difference]: Finished difference Result 52015 states and 69799 transitions. [2022-11-02 21:06:19,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:06:19,963 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 243 [2022-11-02 21:06:19,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:06:20,035 INFO L225 Difference]: With dead ends: 52015 [2022-11-02 21:06:20,035 INFO L226 Difference]: Without dead ends: 34281 [2022-11-02 21:06:20,053 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:06:20,054 INFO L413 NwaCegarLoop]: 833 mSDtfsCounter, 852 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 2393 mSolverCounterSat, 915 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 852 SdHoareTripleChecker+Valid, 951 SdHoareTripleChecker+Invalid, 3308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 915 IncrementalHoareTripleChecker+Valid, 2393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-11-02 21:06:20,055 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [852 Valid, 951 Invalid, 3308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [915 Valid, 2393 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2022-11-02 21:06:20,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34281 states. [2022-11-02 21:06:20,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34281 to 34271. [2022-11-02 21:06:20,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34271 states, 34270 states have (on average 1.25503355704698) internal successors, (43010), 34270 states have internal predecessors, (43010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:20,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34271 states to 34271 states and 43010 transitions. [2022-11-02 21:06:20,634 INFO L78 Accepts]: Start accepts. Automaton has 34271 states and 43010 transitions. Word has length 243 [2022-11-02 21:06:20,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:06:20,635 INFO L495 AbstractCegarLoop]: Abstraction has 34271 states and 43010 transitions. [2022-11-02 21:06:20,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:20,640 INFO L276 IsEmpty]: Start isEmpty. Operand 34271 states and 43010 transitions. [2022-11-02 21:06:20,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2022-11-02 21:06:20,645 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:06:20,645 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:06:20,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-02 21:06:20,646 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:06:20,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:06:20,647 INFO L85 PathProgramCache]: Analyzing trace with hash -984622565, now seen corresponding path program 1 times [2022-11-02 21:06:20,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:06:20,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871468844] [2022-11-02 21:06:20,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:06:20,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:06:20,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:06:20,968 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2022-11-02 21:06:20,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:06:20,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871468844] [2022-11-02 21:06:20,969 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871468844] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:06:20,969 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:06:20,970 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 21:06:20,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520830085] [2022-11-02 21:06:20,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:06:20,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:06:20,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:06:20,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:06:20,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:06:20,972 INFO L87 Difference]: Start difference. First operand 34271 states and 43010 transitions. Second operand has 3 states, 3 states have (on average 57.0) internal successors, (171), 2 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:26,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:06:26,145 INFO L93 Difference]: Finished difference Result 92929 states and 117620 transitions. [2022-11-02 21:06:26,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:06:26,146 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 2 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 274 [2022-11-02 21:06:26,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:06:26,268 INFO L225 Difference]: With dead ends: 92929 [2022-11-02 21:06:26,268 INFO L226 Difference]: Without dead ends: 59447 [2022-11-02 21:06:26,298 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:06:26,299 INFO L413 NwaCegarLoop]: 839 mSDtfsCounter, 857 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 2308 mSolverCounterSat, 869 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 857 SdHoareTripleChecker+Valid, 986 SdHoareTripleChecker+Invalid, 3177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 869 IncrementalHoareTripleChecker+Valid, 2308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-11-02 21:06:26,299 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [857 Valid, 986 Invalid, 3177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [869 Valid, 2308 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2022-11-02 21:06:26,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59447 states. [2022-11-02 21:06:27,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59447 to 57869. [2022-11-02 21:06:27,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57869 states, 57868 states have (on average 1.1960496301928527) internal successors, (69213), 57868 states have internal predecessors, (69213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:27,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57869 states to 57869 states and 69213 transitions. [2022-11-02 21:06:27,158 INFO L78 Accepts]: Start accepts. Automaton has 57869 states and 69213 transitions. Word has length 274 [2022-11-02 21:06:27,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:06:27,158 INFO L495 AbstractCegarLoop]: Abstraction has 57869 states and 69213 transitions. [2022-11-02 21:06:27,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 2 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:27,159 INFO L276 IsEmpty]: Start isEmpty. Operand 57869 states and 69213 transitions. [2022-11-02 21:06:27,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2022-11-02 21:06:27,166 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:06:27,166 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:06:27,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-02 21:06:27,167 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:06:27,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:06:27,169 INFO L85 PathProgramCache]: Analyzing trace with hash 2026738478, now seen corresponding path program 1 times [2022-11-02 21:06:27,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:06:27,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374930517] [2022-11-02 21:06:27,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:06:27,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:06:27,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:06:27,655 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 319 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-11-02 21:06:27,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:06:27,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374930517] [2022-11-02 21:06:27,656 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374930517] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:06:27,656 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:06:27,656 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:06:27,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131085547] [2022-11-02 21:06:27,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:06:27,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:06:27,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:06:27,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:06:27,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:06:27,658 INFO L87 Difference]: Start difference. First operand 57869 states and 69213 transitions. Second operand has 4 states, 4 states have (on average 67.75) internal successors, (271), 3 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:37,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:06:37,564 INFO L93 Difference]: Finished difference Result 156096 states and 188759 transitions. [2022-11-02 21:06:37,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 21:06:37,564 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 67.75) internal successors, (271), 3 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 312 [2022-11-02 21:06:37,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:06:37,720 INFO L225 Difference]: With dead ends: 156096 [2022-11-02 21:06:37,721 INFO L226 Difference]: Without dead ends: 99016 [2022-11-02 21:06:37,754 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:06:37,758 INFO L413 NwaCegarLoop]: 500 mSDtfsCounter, 1733 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 6695 mSolverCounterSat, 1119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1733 SdHoareTripleChecker+Valid, 742 SdHoareTripleChecker+Invalid, 7814 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1119 IncrementalHoareTripleChecker+Valid, 6695 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:06:37,759 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1733 Valid, 742 Invalid, 7814 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1119 Valid, 6695 Invalid, 0 Unknown, 0 Unchecked, 9.1s Time] [2022-11-02 21:06:37,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99016 states. [2022-11-02 21:06:39,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99016 to 97314. [2022-11-02 21:06:39,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97314 states, 97313 states have (on average 1.1924511627429017) internal successors, (116041), 97313 states have internal predecessors, (116041), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:39,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97314 states to 97314 states and 116041 transitions. [2022-11-02 21:06:39,860 INFO L78 Accepts]: Start accepts. Automaton has 97314 states and 116041 transitions. Word has length 312 [2022-11-02 21:06:39,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:06:39,860 INFO L495 AbstractCegarLoop]: Abstraction has 97314 states and 116041 transitions. [2022-11-02 21:06:39,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 67.75) internal successors, (271), 3 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:39,861 INFO L276 IsEmpty]: Start isEmpty. Operand 97314 states and 116041 transitions. [2022-11-02 21:06:39,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2022-11-02 21:06:39,884 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:06:39,884 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-02 21:06:39,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-02 21:06:39,885 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:06:39,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:06:39,886 INFO L85 PathProgramCache]: Analyzing trace with hash -1403591816, now seen corresponding path program 1 times [2022-11-02 21:06:39,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:06:39,886 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102100669] [2022-11-02 21:06:39,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:06:39,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:06:39,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:06:40,508 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 224 proven. 0 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2022-11-02 21:06:40,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:06:40,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102100669] [2022-11-02 21:06:40,509 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102100669] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:06:40,509 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:06:40,509 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 21:06:40,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574202583] [2022-11-02 21:06:40,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:06:40,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:06:40,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:06:40,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:06:40,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:06:40,512 INFO L87 Difference]: Start difference. First operand 97314 states and 116041 transitions. Second operand has 3 states, 3 states have (on average 64.0) internal successors, (192), 2 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:45,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:06:45,490 INFO L93 Difference]: Finished difference Result 179673 states and 215982 transitions. [2022-11-02 21:06:45,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:06:45,491 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 2 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 327 [2022-11-02 21:06:45,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:06:45,595 INFO L225 Difference]: With dead ends: 179673 [2022-11-02 21:06:45,595 INFO L226 Difference]: Without dead ends: 97326 [2022-11-02 21:06:45,641 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:06:45,642 INFO L413 NwaCegarLoop]: 1021 mSDtfsCounter, 730 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 2706 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 730 SdHoareTripleChecker+Valid, 1202 SdHoareTripleChecker+Invalid, 2710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2706 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-11-02 21:06:45,644 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [730 Valid, 1202 Invalid, 2710 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 2706 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2022-11-02 21:06:45,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97326 states. [2022-11-02 21:06:46,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97326 to 97314. [2022-11-02 21:06:46,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97314 states, 97313 states have (on average 1.191526312003535) internal successors, (115951), 97313 states have internal predecessors, (115951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:47,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97314 states to 97314 states and 115951 transitions. [2022-11-02 21:06:47,206 INFO L78 Accepts]: Start accepts. Automaton has 97314 states and 115951 transitions. Word has length 327 [2022-11-02 21:06:47,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:06:47,207 INFO L495 AbstractCegarLoop]: Abstraction has 97314 states and 115951 transitions. [2022-11-02 21:06:47,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 2 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:47,207 INFO L276 IsEmpty]: Start isEmpty. Operand 97314 states and 115951 transitions. [2022-11-02 21:06:47,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2022-11-02 21:06:47,218 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:06:47,219 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:06:47,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-02 21:06:47,221 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:06:47,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:06:47,222 INFO L85 PathProgramCache]: Analyzing trace with hash 1888810318, now seen corresponding path program 1 times [2022-11-02 21:06:47,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:06:47,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103348434] [2022-11-02 21:06:47,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:06:47,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:06:47,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:06:49,089 INFO L134 CoverageAnalysis]: Checked inductivity of 379 backedges. 227 proven. 110 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-11-02 21:06:49,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:06:49,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103348434] [2022-11-02 21:06:49,090 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103348434] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:06:49,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2142229164] [2022-11-02 21:06:49,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:06:49,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:06:49,091 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c9698f3-2442-457f-a4fa-cfd4ddb71c65/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:06:49,093 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c9698f3-2442-457f-a4fa-cfd4ddb71c65/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:06:49,114 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c9698f3-2442-457f-a4fa-cfd4ddb71c65/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-02 21:06:49,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:06:49,290 INFO L263 TraceCheckSpWp]: Trace formula consists of 505 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-02 21:06:49,301 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:06:49,444 INFO L134 CoverageAnalysis]: Checked inductivity of 379 backedges. 266 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2022-11-02 21:06:49,444 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:06:49,444 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2142229164] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:06:49,445 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 21:06:49,445 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2022-11-02 21:06:49,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361319842] [2022-11-02 21:06:49,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:06:49,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:06:49,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:06:49,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:06:49,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:06:49,447 INFO L87 Difference]: Start difference. First operand 97314 states and 115951 transitions. Second operand has 3 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:54,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:06:54,491 INFO L93 Difference]: Finished difference Result 193050 states and 229955 transitions. [2022-11-02 21:06:54,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:06:54,491 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 356 [2022-11-02 21:06:54,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:06:54,618 INFO L225 Difference]: With dead ends: 193050 [2022-11-02 21:06:54,618 INFO L226 Difference]: Without dead ends: 96525 [2022-11-02 21:06:54,658 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 361 GetRequests, 355 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:06:54,659 INFO L413 NwaCegarLoop]: 1366 mSDtfsCounter, 1138 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 2467 mSolverCounterSat, 451 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1138 SdHoareTripleChecker+Valid, 1448 SdHoareTripleChecker+Invalid, 2918 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 451 IncrementalHoareTripleChecker+Valid, 2467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:06:54,659 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1138 Valid, 1448 Invalid, 2918 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [451 Valid, 2467 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2022-11-02 21:06:54,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96525 states. [2022-11-02 21:06:55,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96525 to 96524. [2022-11-02 21:06:56,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96524 states, 96523 states have (on average 1.1407850978523253) internal successors, (110112), 96523 states have internal predecessors, (110112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:56,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96524 states to 96524 states and 110112 transitions. [2022-11-02 21:06:56,153 INFO L78 Accepts]: Start accepts. Automaton has 96524 states and 110112 transitions. Word has length 356 [2022-11-02 21:06:56,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:06:56,154 INFO L495 AbstractCegarLoop]: Abstraction has 96524 states and 110112 transitions. [2022-11-02 21:06:56,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:56,154 INFO L276 IsEmpty]: Start isEmpty. Operand 96524 states and 110112 transitions. [2022-11-02 21:06:56,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2022-11-02 21:06:56,163 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:06:56,163 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:06:56,200 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c9698f3-2442-457f-a4fa-cfd4ddb71c65/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-02 21:06:56,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c9698f3-2442-457f-a4fa-cfd4ddb71c65/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-02 21:06:56,386 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:06:56,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:06:56,387 INFO L85 PathProgramCache]: Analyzing trace with hash 171285418, now seen corresponding path program 1 times [2022-11-02 21:06:56,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:06:56,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612887507] [2022-11-02 21:06:56,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:06:56,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:06:56,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:06:56,628 INFO L134 CoverageAnalysis]: Checked inductivity of 404 backedges. 362 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-11-02 21:06:56,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:06:56,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612887507] [2022-11-02 21:06:56,628 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612887507] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:06:56,628 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:06:56,629 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:06:56,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56999758] [2022-11-02 21:06:56,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:06:56,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:06:56,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:06:56,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:06:56,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:06:56,631 INFO L87 Difference]: Start difference. First operand 96524 states and 110112 transitions. Second operand has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:01,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:07:01,850 INFO L93 Difference]: Finished difference Result 192231 states and 219122 transitions. [2022-11-02 21:07:01,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:07:01,851 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 361 [2022-11-02 21:07:01,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:07:01,971 INFO L225 Difference]: With dead ends: 192231 [2022-11-02 21:07:01,971 INFO L226 Difference]: Without dead ends: 96496 [2022-11-02 21:07:02,019 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:07:02,019 INFO L413 NwaCegarLoop]: 1503 mSDtfsCounter, 1035 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 2348 mSolverCounterSat, 593 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1035 SdHoareTripleChecker+Valid, 1639 SdHoareTripleChecker+Invalid, 2941 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 593 IncrementalHoareTripleChecker+Valid, 2348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-11-02 21:07:02,020 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1035 Valid, 1639 Invalid, 2941 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [593 Valid, 2348 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2022-11-02 21:07:02,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96496 states. [2022-11-02 21:07:03,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96496 to 92551. [2022-11-02 21:07:03,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92551 states, 92550 states have (on average 1.0978065910318746) internal successors, (101602), 92550 states have internal predecessors, (101602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:03,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92551 states to 92551 states and 101602 transitions. [2022-11-02 21:07:03,390 INFO L78 Accepts]: Start accepts. Automaton has 92551 states and 101602 transitions. Word has length 361 [2022-11-02 21:07:03,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:07:03,390 INFO L495 AbstractCegarLoop]: Abstraction has 92551 states and 101602 transitions. [2022-11-02 21:07:03,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:03,391 INFO L276 IsEmpty]: Start isEmpty. Operand 92551 states and 101602 transitions. [2022-11-02 21:07:03,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 372 [2022-11-02 21:07:03,396 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:07:03,397 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:07:03,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-02 21:07:03,397 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:07:03,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:07:03,398 INFO L85 PathProgramCache]: Analyzing trace with hash 1366551800, now seen corresponding path program 1 times [2022-11-02 21:07:03,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:07:03,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114227704] [2022-11-02 21:07:03,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:07:03,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:07:03,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:03,954 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 125 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2022-11-02 21:07:03,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:07:03,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114227704] [2022-11-02 21:07:03,954 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114227704] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:07:03,954 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:07:03,954 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:07:03,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619135368] [2022-11-02 21:07:03,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:07:03,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:07:03,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:07:03,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:07:03,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:07:03,956 INFO L87 Difference]: Start difference. First operand 92551 states and 101602 transitions. Second operand has 4 states, 4 states have (on average 47.25) internal successors, (189), 3 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:12,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:07:12,972 INFO L93 Difference]: Finished difference Result 203278 states and 225307 transitions. [2022-11-02 21:07:12,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 21:07:12,972 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 47.25) internal successors, (189), 3 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 371 [2022-11-02 21:07:12,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:07:13,438 INFO L225 Difference]: With dead ends: 203278 [2022-11-02 21:07:13,439 INFO L226 Difference]: Without dead ends: 124905 [2022-11-02 21:07:13,489 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:07:13,490 INFO L413 NwaCegarLoop]: 645 mSDtfsCounter, 1628 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 5244 mSolverCounterSat, 854 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1628 SdHoareTripleChecker+Valid, 872 SdHoareTripleChecker+Invalid, 6098 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 854 IncrementalHoareTripleChecker+Valid, 5244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2022-11-02 21:07:13,506 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1628 Valid, 872 Invalid, 6098 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [854 Valid, 5244 Invalid, 0 Unknown, 0 Unchecked, 7.9s Time] [2022-11-02 21:07:13,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124905 states. [2022-11-02 21:07:14,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124905 to 109097. [2022-11-02 21:07:14,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109097 states, 109096 states have (on average 1.0896641490063796) internal successors, (118878), 109096 states have internal predecessors, (118878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:14,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109097 states to 109097 states and 118878 transitions. [2022-11-02 21:07:14,933 INFO L78 Accepts]: Start accepts. Automaton has 109097 states and 118878 transitions. Word has length 371 [2022-11-02 21:07:14,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:07:14,933 INFO L495 AbstractCegarLoop]: Abstraction has 109097 states and 118878 transitions. [2022-11-02 21:07:14,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 47.25) internal successors, (189), 3 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:14,934 INFO L276 IsEmpty]: Start isEmpty. Operand 109097 states and 118878 transitions. [2022-11-02 21:07:14,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 374 [2022-11-02 21:07:14,940 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:07:14,940 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:07:14,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-02 21:07:14,941 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:07:14,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:07:14,941 INFO L85 PathProgramCache]: Analyzing trace with hash 110747954, now seen corresponding path program 1 times [2022-11-02 21:07:14,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:07:14,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966712818] [2022-11-02 21:07:14,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:07:14,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:07:15,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:15,668 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 167 proven. 0 refuted. 0 times theorem prover too weak. 445 trivial. 0 not checked. [2022-11-02 21:07:15,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:07:15,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966712818] [2022-11-02 21:07:15,669 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966712818] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:07:15,669 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:07:15,669 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:07:15,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583349853] [2022-11-02 21:07:15,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:07:15,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:07:15,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:07:15,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:07:15,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:07:15,672 INFO L87 Difference]: Start difference. First operand 109097 states and 118878 transitions. Second operand has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:21,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:07:21,299 INFO L93 Difference]: Finished difference Result 253633 states and 275693 transitions. [2022-11-02 21:07:21,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:07:21,300 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 373 [2022-11-02 21:07:21,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:07:21,487 INFO L225 Difference]: With dead ends: 253633 [2022-11-02 21:07:21,487 INFO L226 Difference]: Without dead ends: 144538 [2022-11-02 21:07:21,542 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:07:21,543 INFO L413 NwaCegarLoop]: 1281 mSDtfsCounter, 1059 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 2471 mSolverCounterSat, 706 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1059 SdHoareTripleChecker+Valid, 1331 SdHoareTripleChecker+Invalid, 3177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 706 IncrementalHoareTripleChecker+Valid, 2471 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-11-02 21:07:21,543 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1059 Valid, 1331 Invalid, 3177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [706 Valid, 2471 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2022-11-02 21:07:21,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144538 states. [2022-11-02 21:07:23,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144538 to 136630. [2022-11-02 21:07:23,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136630 states, 136629 states have (on average 1.078145928024065) internal successors, (147306), 136629 states have internal predecessors, (147306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:23,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136630 states to 136630 states and 147306 transitions. [2022-11-02 21:07:23,662 INFO L78 Accepts]: Start accepts. Automaton has 136630 states and 147306 transitions. Word has length 373 [2022-11-02 21:07:23,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:07:23,663 INFO L495 AbstractCegarLoop]: Abstraction has 136630 states and 147306 transitions. [2022-11-02 21:07:23,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:23,663 INFO L276 IsEmpty]: Start isEmpty. Operand 136630 states and 147306 transitions. [2022-11-02 21:07:23,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 439 [2022-11-02 21:07:23,672 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:07:23,673 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:07:23,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-02 21:07:23,673 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:07:23,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:07:23,674 INFO L85 PathProgramCache]: Analyzing trace with hash 1800348005, now seen corresponding path program 1 times [2022-11-02 21:07:23,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:07:23,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898181781] [2022-11-02 21:07:23,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:07:23,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:07:23,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:26,336 INFO L134 CoverageAnalysis]: Checked inductivity of 652 backedges. 387 proven. 113 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2022-11-02 21:07:26,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:07:26,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898181781] [2022-11-02 21:07:26,337 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898181781] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:07:26,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [674651891] [2022-11-02 21:07:26,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:07:26,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:07:26,338 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c9698f3-2442-457f-a4fa-cfd4ddb71c65/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:07:26,343 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c9698f3-2442-457f-a4fa-cfd4ddb71c65/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:07:26,362 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c9698f3-2442-457f-a4fa-cfd4ddb71c65/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-02 21:07:26,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:26,571 INFO L263 TraceCheckSpWp]: Trace formula consists of 617 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 21:07:26,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:07:27,615 INFO L134 CoverageAnalysis]: Checked inductivity of 652 backedges. 387 proven. 0 refuted. 0 times theorem prover too weak. 265 trivial. 0 not checked. [2022-11-02 21:07:27,615 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:07:27,616 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [674651891] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:07:27,616 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 21:07:27,616 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2022-11-02 21:07:27,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421121520] [2022-11-02 21:07:27,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:07:27,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:07:27,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:07:27,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:07:27,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2022-11-02 21:07:27,619 INFO L87 Difference]: Start difference. First operand 136630 states and 147306 transitions. Second operand has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 2 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:32,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:07:32,565 INFO L93 Difference]: Finished difference Result 266967 states and 288175 transitions. [2022-11-02 21:07:32,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:07:32,566 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 2 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 438 [2022-11-02 21:07:32,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:07:32,720 INFO L225 Difference]: With dead ends: 266967 [2022-11-02 21:07:32,721 INFO L226 Difference]: Without dead ends: 142941 [2022-11-02 21:07:32,773 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 444 GetRequests, 437 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2022-11-02 21:07:32,774 INFO L413 NwaCegarLoop]: 1020 mSDtfsCounter, 685 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 2451 mSolverCounterSat, 154 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 685 SdHoareTripleChecker+Valid, 1153 SdHoareTripleChecker+Invalid, 2605 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 154 IncrementalHoareTripleChecker+Valid, 2451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:07:32,774 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [685 Valid, 1153 Invalid, 2605 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [154 Valid, 2451 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-11-02 21:07:32,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142941 states. [2022-11-02 21:07:34,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142941 to 138995. [2022-11-02 21:07:34,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138995 states, 138994 states have (on average 1.0716074075139934) internal successors, (148947), 138994 states have internal predecessors, (148947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:34,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138995 states to 138995 states and 148947 transitions. [2022-11-02 21:07:34,681 INFO L78 Accepts]: Start accepts. Automaton has 138995 states and 148947 transitions. Word has length 438 [2022-11-02 21:07:34,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:07:34,681 INFO L495 AbstractCegarLoop]: Abstraction has 138995 states and 148947 transitions. [2022-11-02 21:07:34,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 2 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:34,682 INFO L276 IsEmpty]: Start isEmpty. Operand 138995 states and 148947 transitions. [2022-11-02 21:07:34,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 476 [2022-11-02 21:07:34,688 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:07:34,688 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 21:07:34,711 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c9698f3-2442-457f-a4fa-cfd4ddb71c65/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-02 21:07:34,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c9698f3-2442-457f-a4fa-cfd4ddb71c65/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:07:34,890 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:07:34,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:07:34,890 INFO L85 PathProgramCache]: Analyzing trace with hash -923512325, now seen corresponding path program 1 times [2022-11-02 21:07:34,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:07:34,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161666923] [2022-11-02 21:07:34,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:07:34,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:07:34,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:35,216 INFO L134 CoverageAnalysis]: Checked inductivity of 738 backedges. 466 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2022-11-02 21:07:35,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:07:35,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161666923] [2022-11-02 21:07:35,217 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161666923] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:07:35,218 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:07:35,218 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:07:35,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534987040] [2022-11-02 21:07:35,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:07:35,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:07:35,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:07:35,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:07:35,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:07:35,224 INFO L87 Difference]: Start difference. First operand 138995 states and 148947 transitions. Second operand has 3 states, 3 states have (on average 97.66666666666667) internal successors, (293), 3 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:41,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:07:41,338 INFO L93 Difference]: Finished difference Result 314207 states and 338433 transitions. [2022-11-02 21:07:41,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:07:41,339 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 97.66666666666667) internal successors, (293), 3 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 475 [2022-11-02 21:07:41,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:07:41,557 INFO L225 Difference]: With dead ends: 314207 [2022-11-02 21:07:41,557 INFO L226 Difference]: Without dead ends: 174427 [2022-11-02 21:07:41,626 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:07:41,627 INFO L413 NwaCegarLoop]: 1766 mSDtfsCounter, 736 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 2517 mSolverCounterSat, 588 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 736 SdHoareTripleChecker+Valid, 1912 SdHoareTripleChecker+Invalid, 3105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 588 IncrementalHoareTripleChecker+Valid, 2517 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:07:41,627 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [736 Valid, 1912 Invalid, 3105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [588 Valid, 2517 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2022-11-02 21:07:41,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174427 states. [2022-11-02 21:07:43,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174427 to 171261. [2022-11-02 21:07:43,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171261 states, 171260 states have (on average 1.062057690061894) internal successors, (181888), 171260 states have internal predecessors, (181888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:44,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171261 states to 171261 states and 181888 transitions. [2022-11-02 21:07:44,170 INFO L78 Accepts]: Start accepts. Automaton has 171261 states and 181888 transitions. Word has length 475 [2022-11-02 21:07:44,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:07:44,171 INFO L495 AbstractCegarLoop]: Abstraction has 171261 states and 181888 transitions. [2022-11-02 21:07:44,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 97.66666666666667) internal successors, (293), 3 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:44,171 INFO L276 IsEmpty]: Start isEmpty. Operand 171261 states and 181888 transitions. [2022-11-02 21:07:44,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 485 [2022-11-02 21:07:44,178 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:07:44,179 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:07:44,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-02 21:07:44,179 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:07:44,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:07:44,179 INFO L85 PathProgramCache]: Analyzing trace with hash 27973580, now seen corresponding path program 1 times [2022-11-02 21:07:44,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:07:44,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390915157] [2022-11-02 21:07:44,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:07:44,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:07:44,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:44,516 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 533 proven. 0 refuted. 0 times theorem prover too weak. 433 trivial. 0 not checked. [2022-11-02 21:07:44,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:07:44,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390915157] [2022-11-02 21:07:44,516 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390915157] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:07:44,516 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:07:44,517 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:07:44,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023496377] [2022-11-02 21:07:44,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:07:44,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:07:44,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:07:44,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:07:44,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:07:44,519 INFO L87 Difference]: Start difference. First operand 171261 states and 181888 transitions. Second operand has 3 states, 3 states have (on average 86.33333333333333) internal successors, (259), 3 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)