./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.5.4.ufo.BOUNDED-10.pals.c.v+cfa-reducer.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_cd540e37-cba9-4c08-8730-6e8e42196c59/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd540e37-cba9-4c08-8730-6e8e42196c59/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_cd540e37-cba9-4c08-8730-6e8e42196c59/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd540e37-cba9-4c08-8730-6e8e42196c59/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.5.4.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd540e37-cba9-4c08-8730-6e8e42196c59/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_cd540e37-cba9-4c08-8730-6e8e42196c59/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 e22fd4a52371acb4b873b206639f8f51f7518d2778c43044aaff0b323ebca998 --- 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 20:04:52,548 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:04:52,551 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:04:52,597 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:04:52,597 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:04:52,602 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:04:52,604 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:04:52,609 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:04:52,611 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:04:52,617 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:04:52,618 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:04:52,621 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:04:52,621 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:04:52,624 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:04:52,626 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:04:52,628 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:04:52,630 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:04:52,631 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:04:52,632 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:04:52,643 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:04:52,644 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:04:52,646 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:04:52,649 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:04:52,650 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:04:52,660 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:04:52,660 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:04:52,660 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:04:52,662 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:04:52,663 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:04:52,665 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:04:52,666 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:04:52,668 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:04:52,674 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:04:52,675 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:04:52,676 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:04:52,676 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:04:52,677 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:04:52,677 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:04:52,678 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:04:52,679 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:04:52,679 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:04:52,680 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd540e37-cba9-4c08-8730-6e8e42196c59/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-02 20:04:52,725 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:04:52,725 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:04:52,726 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:04:52,726 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:04:52,727 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:04:52,727 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:04:52,728 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:04:52,728 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:04:52,728 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:04:52,728 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:04:52,729 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 20:04:52,729 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:04:52,729 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 20:04:52,729 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:04:52,730 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:04:52,730 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:04:52,730 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:04:52,730 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 20:04:52,731 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:04:52,731 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:04:52,731 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:04:52,731 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:04:52,731 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:04:52,732 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:04:52,732 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:04:52,732 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:04:52,732 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:04:52,733 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:04:52,733 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:04:52,733 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:04:52,733 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:04:52,734 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:04:52,734 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:04:52,734 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_cd540e37-cba9-4c08-8730-6e8e42196c59/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd540e37-cba9-4c08-8730-6e8e42196c59/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e22fd4a52371acb4b873b206639f8f51f7518d2778c43044aaff0b323ebca998 [2022-11-02 20:04:53,020 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:04:53,047 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:04:53,050 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:04:53,051 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:04:53,052 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:04:53,054 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd540e37-cba9-4c08-8730-6e8e42196c59/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.5.4.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2022-11-02 20:04:53,133 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd540e37-cba9-4c08-8730-6e8e42196c59/bin/uautomizer-Dbtcem3rbc/data/ddbe21743/bb39d2b4f1bd4030838991dd590d12d5/FLAG13f06fd9a [2022-11-02 20:04:53,937 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:04:53,938 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd540e37-cba9-4c08-8730-6e8e42196c59/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.5.4.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2022-11-02 20:04:53,966 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd540e37-cba9-4c08-8730-6e8e42196c59/bin/uautomizer-Dbtcem3rbc/data/ddbe21743/bb39d2b4f1bd4030838991dd590d12d5/FLAG13f06fd9a [2022-11-02 20:04:54,070 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd540e37-cba9-4c08-8730-6e8e42196c59/bin/uautomizer-Dbtcem3rbc/data/ddbe21743/bb39d2b4f1bd4030838991dd590d12d5 [2022-11-02 20:04:54,075 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:04:54,078 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:04:54,083 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:04:54,083 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:04:54,087 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:04:54,088 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:04:54" (1/1) ... [2022-11-02 20:04:54,091 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66198c9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:04:54, skipping insertion in model container [2022-11-02 20:04:54,091 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:04:54" (1/1) ... [2022-11-02 20:04:54,099 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:04:54,200 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:04:54,652 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_cd540e37-cba9-4c08-8730-6e8e42196c59/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.5.4.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c[22084,22097] [2022-11-02 20:04:54,888 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:04:54,914 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:04:55,119 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_cd540e37-cba9-4c08-8730-6e8e42196c59/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.5.4.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c[22084,22097] [2022-11-02 20:04:55,218 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:04:55,244 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:04:55,246 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:04:55 WrapperNode [2022-11-02 20:04:55,246 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:04:55,248 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:04:55,248 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:04:55,248 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:04:55,258 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:04:55" (1/1) ... [2022-11-02 20:04:55,295 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:04:55" (1/1) ... [2022-11-02 20:04:55,382 INFO L138 Inliner]: procedures = 24, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 2773 [2022-11-02 20:04:55,382 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:04:55,383 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:04:55,383 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:04:55,383 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:04:55,392 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:04:55" (1/1) ... [2022-11-02 20:04:55,403 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:04:55" (1/1) ... [2022-11-02 20:04:55,409 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:04:55" (1/1) ... [2022-11-02 20:04:55,409 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:04:55" (1/1) ... [2022-11-02 20:04:55,446 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:04:55" (1/1) ... [2022-11-02 20:04:55,484 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:04:55" (1/1) ... [2022-11-02 20:04:55,490 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:04:55" (1/1) ... [2022-11-02 20:04:55,504 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:04:55" (1/1) ... [2022-11-02 20:04:55,518 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:04:55,522 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:04:55,524 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:04:55,524 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:04:55,525 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:04:55" (1/1) ... [2022-11-02 20:04:55,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:04:55,545 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd540e37-cba9-4c08-8730-6e8e42196c59/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:04:55,557 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd540e37-cba9-4c08-8730-6e8e42196c59/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:04:55,589 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd540e37-cba9-4c08-8730-6e8e42196c59/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:04:55,609 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:04:55,610 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 20:04:55,610 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:04:55,610 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:04:55,932 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:04:55,934 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:04:57,901 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:04:57,922 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:04:57,922 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-02 20:04:57,926 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:04:57 BoogieIcfgContainer [2022-11-02 20:04:57,926 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:04:57,929 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:04:57,929 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:04:57,932 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:04:57,933 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:04:54" (1/3) ... [2022-11-02 20:04:57,934 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6511ebcb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:04:57, skipping insertion in model container [2022-11-02 20:04:57,934 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:04:55" (2/3) ... [2022-11-02 20:04:57,934 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6511ebcb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:04:57, skipping insertion in model container [2022-11-02 20:04:57,934 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:04:57" (3/3) ... [2022-11-02 20:04:57,936 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_floodmax.5.4.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2022-11-02 20:04:57,955 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:04:57,956 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 20:04:58,024 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:04:58,030 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;@336f49a9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:04:58,030 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 20:04:58,038 INFO L276 IsEmpty]: Start isEmpty. Operand has 736 states, 734 states have (on average 1.8419618528610355) internal successors, (1352), 735 states have internal predecessors, (1352), 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 20:04:58,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2022-11-02 20:04:58,065 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:04:58,066 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:04:58,066 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:04:58,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:04:58,072 INFO L85 PathProgramCache]: Analyzing trace with hash -666845715, now seen corresponding path program 1 times [2022-11-02 20:04:58,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:04:58,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940228904] [2022-11-02 20:04:58,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:04:58,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:04:58,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:59,030 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 20:04:59,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:04:59,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940228904] [2022-11-02 20:04:59,032 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940228904] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:04:59,032 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:04:59,032 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:04:59,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137264230] [2022-11-02 20:04:59,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:04:59,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:04:59,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:04:59,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:04:59,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:04:59,088 INFO L87 Difference]: Start difference. First operand has 736 states, 734 states have (on average 1.8419618528610355) internal successors, (1352), 735 states have internal predecessors, (1352), 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 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 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 20:04:59,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:04:59,282 INFO L93 Difference]: Finished difference Result 1109 states and 1983 transitions. [2022-11-02 20:04:59,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:04:59,285 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 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 204 [2022-11-02 20:04:59,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:04:59,307 INFO L225 Difference]: With dead ends: 1109 [2022-11-02 20:04:59,308 INFO L226 Difference]: Without dead ends: 910 [2022-11-02 20:04:59,312 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 20:04:59,316 INFO L413 NwaCegarLoop]: 1352 mSDtfsCounter, 339 mSDsluCounter, 1244 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 339 SdHoareTripleChecker+Valid, 2596 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:04:59,317 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [339 Valid, 2596 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:04:59,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 910 states. [2022-11-02 20:04:59,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 910 to 908. [2022-11-02 20:04:59,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 908 states, 907 states have (on average 1.7420066152149944) internal successors, (1580), 907 states have internal predecessors, (1580), 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 20:04:59,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 908 states to 908 states and 1580 transitions. [2022-11-02 20:04:59,465 INFO L78 Accepts]: Start accepts. Automaton has 908 states and 1580 transitions. Word has length 204 [2022-11-02 20:04:59,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:04:59,466 INFO L495 AbstractCegarLoop]: Abstraction has 908 states and 1580 transitions. [2022-11-02 20:04:59,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 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 20:04:59,467 INFO L276 IsEmpty]: Start isEmpty. Operand 908 states and 1580 transitions. [2022-11-02 20:04:59,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2022-11-02 20:04:59,475 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:04:59,475 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:04:59,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:04:59,476 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:04:59,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:04:59,477 INFO L85 PathProgramCache]: Analyzing trace with hash 961374666, now seen corresponding path program 1 times [2022-11-02 20:04:59,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:04:59,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755483426] [2022-11-02 20:04:59,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:04:59,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:04:59,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:04:59,890 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 20:04:59,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:04:59,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755483426] [2022-11-02 20:04:59,892 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755483426] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:04:59,892 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:04:59,892 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:04:59,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239212967] [2022-11-02 20:04:59,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:04:59,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:04:59,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:04:59,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:04:59,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:04:59,899 INFO L87 Difference]: Start difference. First operand 908 states and 1580 transitions. Second operand has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 states have internal predecessors, (208), 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 20:04:59,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:04:59,969 INFO L93 Difference]: Finished difference Result 1616 states and 2772 transitions. [2022-11-02 20:04:59,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:04:59,971 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 states have internal predecessors, (208), 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 208 [2022-11-02 20:04:59,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:04:59,981 INFO L225 Difference]: With dead ends: 1616 [2022-11-02 20:04:59,981 INFO L226 Difference]: Without dead ends: 1251 [2022-11-02 20:04:59,991 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 20:04:59,994 INFO L413 NwaCegarLoop]: 1493 mSDtfsCounter, 292 mSDsluCounter, 1235 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 292 SdHoareTripleChecker+Valid, 2728 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:04:59,995 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [292 Valid, 2728 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:05:00,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1251 states. [2022-11-02 20:05:00,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1251 to 1249. [2022-11-02 20:05:00,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1249 states, 1248 states have (on average 1.7243589743589745) internal successors, (2152), 1248 states have internal predecessors, (2152), 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 20:05:00,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1249 states to 1249 states and 2152 transitions. [2022-11-02 20:05:00,065 INFO L78 Accepts]: Start accepts. Automaton has 1249 states and 2152 transitions. Word has length 208 [2022-11-02 20:05:00,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:05:00,068 INFO L495 AbstractCegarLoop]: Abstraction has 1249 states and 2152 transitions. [2022-11-02 20:05:00,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 states have internal predecessors, (208), 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 20:05:00,069 INFO L276 IsEmpty]: Start isEmpty. Operand 1249 states and 2152 transitions. [2022-11-02 20:05:00,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2022-11-02 20:05:00,075 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:05:00,077 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:05:00,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 20:05:00,081 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:05:00,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:05:00,082 INFO L85 PathProgramCache]: Analyzing trace with hash 1204290054, now seen corresponding path program 1 times [2022-11-02 20:05:00,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:05:00,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409545353] [2022-11-02 20:05:00,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:05:00,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:05:00,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:05:00,401 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 20:05:00,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:05:00,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409545353] [2022-11-02 20:05:00,402 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409545353] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:05:00,403 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:05:00,403 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:05:00,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517712689] [2022-11-02 20:05:00,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:05:00,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:05:00,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:05:00,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:05:00,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:05:00,406 INFO L87 Difference]: Start difference. First operand 1249 states and 2152 transitions. Second operand has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 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 20:05:00,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:05:00,537 INFO L93 Difference]: Finished difference Result 1950 states and 3336 transitions. [2022-11-02 20:05:00,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:05:00,538 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 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 212 [2022-11-02 20:05:00,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:05:00,545 INFO L225 Difference]: With dead ends: 1950 [2022-11-02 20:05:00,546 INFO L226 Difference]: Without dead ends: 1585 [2022-11-02 20:05:00,550 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 20:05:00,556 INFO L413 NwaCegarLoop]: 1494 mSDtfsCounter, 293 mSDsluCounter, 1242 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 293 SdHoareTripleChecker+Valid, 2736 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:05:00,558 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [293 Valid, 2736 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:05:00,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1585 states. [2022-11-02 20:05:00,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1585 to 1583. [2022-11-02 20:05:00,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1583 states, 1582 states have (on average 1.715549936788875) internal successors, (2714), 1582 states have internal predecessors, (2714), 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 20:05:00,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1583 states to 1583 states and 2714 transitions. [2022-11-02 20:05:00,638 INFO L78 Accepts]: Start accepts. Automaton has 1583 states and 2714 transitions. Word has length 212 [2022-11-02 20:05:00,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:05:00,639 INFO L495 AbstractCegarLoop]: Abstraction has 1583 states and 2714 transitions. [2022-11-02 20:05:00,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 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 20:05:00,639 INFO L276 IsEmpty]: Start isEmpty. Operand 1583 states and 2714 transitions. [2022-11-02 20:05:00,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2022-11-02 20:05:00,643 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:05:00,645 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:05:00,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 20:05:00,646 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:05:00,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:05:00,648 INFO L85 PathProgramCache]: Analyzing trace with hash -640806259, now seen corresponding path program 1 times [2022-11-02 20:05:00,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:05:00,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421036051] [2022-11-02 20:05:00,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:05:00,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:05:00,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:05:00,969 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 20:05:00,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:05:00,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421036051] [2022-11-02 20:05:00,970 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421036051] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:05:00,970 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:05:00,970 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:05:00,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789963616] [2022-11-02 20:05:00,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:05:00,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:05:00,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:05:00,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:05:00,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:05:00,973 INFO L87 Difference]: Start difference. First operand 1583 states and 2714 transitions. Second operand has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 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 20:05:01,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:05:01,163 INFO L93 Difference]: Finished difference Result 3523 states and 5970 transitions. [2022-11-02 20:05:01,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:05:01,164 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 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 212 [2022-11-02 20:05:01,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:05:01,175 INFO L225 Difference]: With dead ends: 3523 [2022-11-02 20:05:01,175 INFO L226 Difference]: Without dead ends: 2520 [2022-11-02 20:05:01,178 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 20:05:01,186 INFO L413 NwaCegarLoop]: 1286 mSDtfsCounter, 285 mSDsluCounter, 1236 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 2522 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:05:01,188 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [285 Valid, 2522 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:05:01,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2520 states. [2022-11-02 20:05:01,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2520 to 2518. [2022-11-02 20:05:01,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2518 states, 2517 states have (on average 1.697258641239571) internal successors, (4272), 2517 states have internal predecessors, (4272), 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 20:05:01,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2518 states to 2518 states and 4272 transitions. [2022-11-02 20:05:01,343 INFO L78 Accepts]: Start accepts. Automaton has 2518 states and 4272 transitions. Word has length 212 [2022-11-02 20:05:01,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:05:01,343 INFO L495 AbstractCegarLoop]: Abstraction has 2518 states and 4272 transitions. [2022-11-02 20:05:01,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 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 20:05:01,344 INFO L276 IsEmpty]: Start isEmpty. Operand 2518 states and 4272 transitions. [2022-11-02 20:05:01,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2022-11-02 20:05:01,349 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:05:01,349 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:05:01,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-02 20:05:01,349 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:05:01,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:05:01,351 INFO L85 PathProgramCache]: Analyzing trace with hash 1656526890, now seen corresponding path program 1 times [2022-11-02 20:05:01,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:05:01,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723052992] [2022-11-02 20:05:01,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:05:01,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:05:01,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:05:01,625 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 20:05:01,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:05:01,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723052992] [2022-11-02 20:05:01,625 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723052992] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:05:01,626 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:05:01,626 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:05:01,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367075193] [2022-11-02 20:05:01,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:05:01,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:05:01,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:05:01,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:05:01,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:05:01,628 INFO L87 Difference]: Start difference. First operand 2518 states and 4272 transitions. Second operand has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 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 20:05:01,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:05:01,900 INFO L93 Difference]: Finished difference Result 6262 states and 10518 transitions. [2022-11-02 20:05:01,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:05:01,901 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 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 216 [2022-11-02 20:05:01,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:05:01,919 INFO L225 Difference]: With dead ends: 6262 [2022-11-02 20:05:01,920 INFO L226 Difference]: Without dead ends: 4324 [2022-11-02 20:05:01,927 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 20:05:01,928 INFO L413 NwaCegarLoop]: 1401 mSDtfsCounter, 278 mSDsluCounter, 1237 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 2638 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:05:01,929 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [278 Valid, 2638 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:05:01,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4324 states. [2022-11-02 20:05:02,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4324 to 4322. [2022-11-02 20:05:02,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4322 states, 4321 states have (on average 1.6792409164545243) internal successors, (7256), 4321 states have internal predecessors, (7256), 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 20:05:02,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4322 states to 4322 states and 7256 transitions. [2022-11-02 20:05:02,266 INFO L78 Accepts]: Start accepts. Automaton has 4322 states and 7256 transitions. Word has length 216 [2022-11-02 20:05:02,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:05:02,268 INFO L495 AbstractCegarLoop]: Abstraction has 4322 states and 7256 transitions. [2022-11-02 20:05:02,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 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 20:05:02,272 INFO L276 IsEmpty]: Start isEmpty. Operand 4322 states and 7256 transitions. [2022-11-02 20:05:02,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2022-11-02 20:05:02,278 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:05:02,278 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:05:02,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-02 20:05:02,279 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:05:02,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:05:02,280 INFO L85 PathProgramCache]: Analyzing trace with hash -759647818, now seen corresponding path program 1 times [2022-11-02 20:05:02,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:05:02,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284093966] [2022-11-02 20:05:02,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:05:02,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:05:02,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:05:02,557 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 20:05:02,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:05:02,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284093966] [2022-11-02 20:05:02,558 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284093966] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:05:02,558 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:05:02,559 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:05:02,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338005606] [2022-11-02 20:05:02,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:05:02,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:05:02,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:05:02,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:05:02,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:05:02,561 INFO L87 Difference]: Start difference. First operand 4322 states and 7256 transitions. Second operand has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 3 states have internal predecessors, (220), 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 20:05:03,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:05:03,099 INFO L93 Difference]: Finished difference Result 7918 states and 13272 transitions. [2022-11-02 20:05:03,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:05:03,100 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 3 states have internal predecessors, (220), 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 220 [2022-11-02 20:05:03,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:05:03,126 INFO L225 Difference]: With dead ends: 7918 [2022-11-02 20:05:03,126 INFO L226 Difference]: Without dead ends: 5980 [2022-11-02 20:05:03,130 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 20:05:03,132 INFO L413 NwaCegarLoop]: 1401 mSDtfsCounter, 279 mSDsluCounter, 1244 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 279 SdHoareTripleChecker+Valid, 2645 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:05:03,132 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [279 Valid, 2645 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:05:03,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5980 states. [2022-11-02 20:05:03,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5980 to 5978. [2022-11-02 20:05:03,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5978 states, 5977 states have (on average 1.674083988623055) internal successors, (10006), 5977 states have internal predecessors, (10006), 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 20:05:03,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5978 states to 5978 states and 10006 transitions. [2022-11-02 20:05:03,729 INFO L78 Accepts]: Start accepts. Automaton has 5978 states and 10006 transitions. Word has length 220 [2022-11-02 20:05:03,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:05:03,730 INFO L495 AbstractCegarLoop]: Abstraction has 5978 states and 10006 transitions. [2022-11-02 20:05:03,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 3 states have internal predecessors, (220), 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 20:05:03,730 INFO L276 IsEmpty]: Start isEmpty. Operand 5978 states and 10006 transitions. [2022-11-02 20:05:03,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2022-11-02 20:05:03,734 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:05:03,735 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:05:03,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-02 20:05:03,735 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:05:03,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:05:03,736 INFO L85 PathProgramCache]: Analyzing trace with hash -808960211, now seen corresponding path program 1 times [2022-11-02 20:05:03,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:05:03,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885846219] [2022-11-02 20:05:03,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:05:03,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:05:03,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:05:03,983 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 20:05:03,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:05:03,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885846219] [2022-11-02 20:05:03,984 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885846219] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:05:03,984 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:05:03,985 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:05:03,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769640853] [2022-11-02 20:05:03,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:05:03,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:05:03,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:05:03,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:05:03,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:05:03,987 INFO L87 Difference]: Start difference. First operand 5978 states and 10006 transitions. Second operand has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 3 states have internal predecessors, (220), 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 20:05:04,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:05:04,879 INFO L93 Difference]: Finished difference Result 16146 states and 26844 transitions. [2022-11-02 20:05:04,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:05:04,880 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 3 states have internal predecessors, (220), 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 220 [2022-11-02 20:05:04,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:05:04,938 INFO L225 Difference]: With dead ends: 16146 [2022-11-02 20:05:04,938 INFO L226 Difference]: Without dead ends: 10864 [2022-11-02 20:05:04,948 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 20:05:04,949 INFO L413 NwaCegarLoop]: 1287 mSDtfsCounter, 271 mSDsluCounter, 1238 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 271 SdHoareTripleChecker+Valid, 2525 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:05:04,950 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [271 Valid, 2525 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:05:04,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10864 states. [2022-11-02 20:05:05,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10864 to 10862. [2022-11-02 20:05:05,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10862 states, 10861 states have (on average 1.658226682625909) internal successors, (18010), 10861 states have internal predecessors, (18010), 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 20:05:06,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10862 states to 10862 states and 18010 transitions. [2022-11-02 20:05:06,020 INFO L78 Accepts]: Start accepts. Automaton has 10862 states and 18010 transitions. Word has length 220 [2022-11-02 20:05:06,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:05:06,021 INFO L495 AbstractCegarLoop]: Abstraction has 10862 states and 18010 transitions. [2022-11-02 20:05:06,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 3 states have internal predecessors, (220), 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 20:05:06,022 INFO L276 IsEmpty]: Start isEmpty. Operand 10862 states and 18010 transitions. [2022-11-02 20:05:06,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2022-11-02 20:05:06,028 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:05:06,029 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:05:06,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-02 20:05:06,029 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:05:06,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:05:06,030 INFO L85 PathProgramCache]: Analyzing trace with hash -1627459958, now seen corresponding path program 1 times [2022-11-02 20:05:06,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:05:06,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359258785] [2022-11-02 20:05:06,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:05:06,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:05:06,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:05:06,461 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 20:05:06,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:05:06,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359258785] [2022-11-02 20:05:06,462 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359258785] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:05:06,462 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:05:06,462 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:05:06,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978348896] [2022-11-02 20:05:06,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:05:06,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:05:06,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:05:06,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:05:06,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:05:06,464 INFO L87 Difference]: Start difference. First operand 10862 states and 18010 transitions. Second operand has 7 states, 7 states have (on average 32.0) internal successors, (224), 7 states have internal predecessors, (224), 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 20:05:11,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:05:11,619 INFO L93 Difference]: Finished difference Result 73998 states and 123151 transitions. [2022-11-02 20:05:11,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 20:05:11,620 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 32.0) internal successors, (224), 7 states have internal predecessors, (224), 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 224 [2022-11-02 20:05:11,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:05:11,832 INFO L225 Difference]: With dead ends: 73998 [2022-11-02 20:05:11,832 INFO L226 Difference]: Without dead ends: 63832 [2022-11-02 20:05:11,863 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2022-11-02 20:05:11,864 INFO L413 NwaCegarLoop]: 1273 mSDtfsCounter, 4553 mSDsluCounter, 9084 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4553 SdHoareTripleChecker+Valid, 10357 SdHoareTripleChecker+Invalid, 224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:05:11,865 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4553 Valid, 10357 Invalid, 224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 20:05:11,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63832 states. [2022-11-02 20:05:14,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63832 to 20817. [2022-11-02 20:05:14,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20817 states, 20816 states have (on average 1.6534877017678709) internal successors, (34419), 20816 states have internal predecessors, (34419), 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 20:05:14,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20817 states to 20817 states and 34419 transitions. [2022-11-02 20:05:14,986 INFO L78 Accepts]: Start accepts. Automaton has 20817 states and 34419 transitions. Word has length 224 [2022-11-02 20:05:14,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:05:14,987 INFO L495 AbstractCegarLoop]: Abstraction has 20817 states and 34419 transitions. [2022-11-02 20:05:14,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 32.0) internal successors, (224), 7 states have internal predecessors, (224), 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 20:05:14,987 INFO L276 IsEmpty]: Start isEmpty. Operand 20817 states and 34419 transitions. [2022-11-02 20:05:14,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2022-11-02 20:05:14,992 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:05:14,993 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:05:14,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-02 20:05:14,993 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:05:14,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:05:14,994 INFO L85 PathProgramCache]: Analyzing trace with hash 1016729105, now seen corresponding path program 1 times [2022-11-02 20:05:14,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:05:14,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55671079] [2022-11-02 20:05:14,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:05:14,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:05:15,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:05:15,241 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 20:05:15,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:05:15,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55671079] [2022-11-02 20:05:15,241 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55671079] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:05:15,241 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:05:15,241 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:05:15,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555973304] [2022-11-02 20:05:15,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:05:15,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:05:15,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:05:15,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:05:15,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:05:15,244 INFO L87 Difference]: Start difference. First operand 20817 states and 34419 transitions. Second operand has 4 states, 4 states have (on average 56.25) internal successors, (225), 4 states have internal predecessors, (225), 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 20:05:19,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:05:19,467 INFO L93 Difference]: Finished difference Result 61920 states and 102779 transitions. [2022-11-02 20:05:19,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:05:19,468 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 56.25) internal successors, (225), 4 states have internal predecessors, (225), 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 20:05:19,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:05:19,563 INFO L225 Difference]: With dead ends: 61920 [2022-11-02 20:05:19,564 INFO L226 Difference]: Without dead ends: 41861 [2022-11-02 20:05:19,590 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:05:19,591 INFO L413 NwaCegarLoop]: 1275 mSDtfsCounter, 939 mSDsluCounter, 2627 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 939 SdHoareTripleChecker+Valid, 3902 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:05:19,591 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [939 Valid, 3902 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:05:19,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41861 states. [2022-11-02 20:05:23,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41861 to 31296. [2022-11-02 20:05:23,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31296 states, 31295 states have (on average 1.655376258188209) internal successors, (51805), 31295 states have internal predecessors, (51805), 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 20:05:23,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31296 states to 31296 states and 51805 transitions. [2022-11-02 20:05:23,497 INFO L78 Accepts]: Start accepts. Automaton has 31296 states and 51805 transitions. Word has length 225 [2022-11-02 20:05:23,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:05:23,498 INFO L495 AbstractCegarLoop]: Abstraction has 31296 states and 51805 transitions. [2022-11-02 20:05:23,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.25) internal successors, (225), 4 states have internal predecessors, (225), 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 20:05:23,498 INFO L276 IsEmpty]: Start isEmpty. Operand 31296 states and 51805 transitions. [2022-11-02 20:05:23,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2022-11-02 20:05:23,504 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:05:23,505 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:05:23,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-02 20:05:23,505 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:05:23,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:05:23,506 INFO L85 PathProgramCache]: Analyzing trace with hash 1804910714, now seen corresponding path program 1 times [2022-11-02 20:05:23,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:05:23,506 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786616184] [2022-11-02 20:05:23,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:05:23,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:05:23,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:05:23,707 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 20:05:23,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:05:23,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786616184] [2022-11-02 20:05:23,708 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786616184] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:05:23,708 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:05:23,708 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:05:23,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660635656] [2022-11-02 20:05:23,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:05:23,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:05:23,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:05:23,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:05:23,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:05:23,710 INFO L87 Difference]: Start difference. First operand 31296 states and 51805 transitions. Second operand has 3 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 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 20:05:28,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:05:28,684 INFO L93 Difference]: Finished difference Result 59898 states and 99327 transitions. [2022-11-02 20:05:28,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:05:28,684 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 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 20:05:28,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:05:28,776 INFO L225 Difference]: With dead ends: 59898 [2022-11-02 20:05:28,776 INFO L226 Difference]: Without dead ends: 43930 [2022-11-02 20:05:28,802 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 20:05:28,804 INFO L413 NwaCegarLoop]: 1367 mSDtfsCounter, 272 mSDsluCounter, 1245 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 2612 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:05:28,804 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [272 Valid, 2612 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:05:28,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43930 states. [2022-11-02 20:05:33,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43930 to 43928. [2022-11-02 20:05:33,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43928 states, 43927 states have (on average 1.6528103444350855) internal successors, (72603), 43927 states have internal predecessors, (72603), 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 20:05:34,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43928 states to 43928 states and 72603 transitions. [2022-11-02 20:05:34,196 INFO L78 Accepts]: Start accepts. Automaton has 43928 states and 72603 transitions. Word has length 225 [2022-11-02 20:05:34,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:05:34,202 INFO L495 AbstractCegarLoop]: Abstraction has 43928 states and 72603 transitions. [2022-11-02 20:05:34,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 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 20:05:34,203 INFO L276 IsEmpty]: Start isEmpty. Operand 43928 states and 72603 transitions. [2022-11-02 20:05:34,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2022-11-02 20:05:34,217 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:05:34,218 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:05:34,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-02 20:05:34,218 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:05:34,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:05:34,219 INFO L85 PathProgramCache]: Analyzing trace with hash 1252454586, now seen corresponding path program 1 times [2022-11-02 20:05:34,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:05:34,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703995574] [2022-11-02 20:05:34,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:05:34,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:05:34,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:05:34,412 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 20:05:34,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:05:34,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703995574] [2022-11-02 20:05:34,413 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703995574] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:05:34,413 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:05:34,413 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:05:34,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248800848] [2022-11-02 20:05:34,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:05:34,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:05:34,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:05:34,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:05:34,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:05:34,416 INFO L87 Difference]: Start difference. First operand 43928 states and 72603 transitions. Second operand has 3 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 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 20:05:41,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:05:41,384 INFO L93 Difference]: Finished difference Result 83514 states and 138377 transitions. [2022-11-02 20:05:41,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:05:41,385 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 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 20:05:41,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:05:41,505 INFO L225 Difference]: With dead ends: 83514 [2022-11-02 20:05:41,505 INFO L226 Difference]: Without dead ends: 60858 [2022-11-02 20:05:41,528 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 20:05:41,529 INFO L413 NwaCegarLoop]: 1459 mSDtfsCounter, 286 mSDsluCounter, 1243 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 286 SdHoareTripleChecker+Valid, 2702 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:05:41,530 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [286 Valid, 2702 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:05:41,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60858 states.