./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.6.2.ufo.BOUNDED-12.pals.c.p+lhb-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c9b00ac-bdd9-48fd-a36f-8c8e6fb6c7b5/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c9b00ac-bdd9-48fd-a36f-8c8e6fb6c7b5/bin/uautomizer-J5u9QxTXDZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c9b00ac-bdd9-48fd-a36f-8c8e6fb6c7b5/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c9b00ac-bdd9-48fd-a36f-8c8e6fb6c7b5/bin/uautomizer-J5u9QxTXDZ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.6.2.ufo.BOUNDED-12.pals.c.p+lhb-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c9b00ac-bdd9-48fd-a36f-8c8e6fb6c7b5/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c9b00ac-bdd9-48fd-a36f-8c8e6fb6c7b5/bin/uautomizer-J5u9QxTXDZ --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 d9dc4c1afb888b23c0ebc469c8090d62842d0a0c5570d5e56681453b5bd49afb --- 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-dbf71c6-m [2022-10-17 11:01:24,479 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 11:01:24,482 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 11:01:24,544 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 11:01:24,545 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 11:01:24,550 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 11:01:24,553 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 11:01:24,555 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 11:01:24,558 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 11:01:24,559 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 11:01:24,560 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 11:01:24,562 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 11:01:24,563 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 11:01:24,564 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 11:01:24,566 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 11:01:24,567 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 11:01:24,569 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 11:01:24,574 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 11:01:24,576 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 11:01:24,579 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 11:01:24,581 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 11:01:24,585 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 11:01:24,589 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 11:01:24,590 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 11:01:24,600 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 11:01:24,602 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 11:01:24,602 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 11:01:24,603 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 11:01:24,604 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 11:01:24,605 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 11:01:24,605 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 11:01:24,606 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 11:01:24,607 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 11:01:24,608 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 11:01:24,609 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 11:01:24,610 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 11:01:24,610 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 11:01:24,611 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 11:01:24,611 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 11:01:24,612 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 11:01:24,613 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 11:01:24,614 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c9b00ac-bdd9-48fd-a36f-8c8e6fb6c7b5/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-10-17 11:01:24,654 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 11:01:24,654 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 11:01:24,655 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 11:01:24,655 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 11:01:24,656 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 11:01:24,657 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 11:01:24,657 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 11:01:24,658 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 11:01:24,658 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 11:01:24,658 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 11:01:24,660 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 11:01:24,660 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 11:01:24,660 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 11:01:24,660 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 11:01:24,661 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 11:01:24,661 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 11:01:24,661 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 11:01:24,661 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 11:01:24,662 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 11:01:24,662 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 11:01:24,662 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 11:01:24,662 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 11:01:24,663 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 11:01:24,663 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 11:01:24,663 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 11:01:24,663 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 11:01:24,664 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 11:01:24,664 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 11:01:24,664 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 11:01:24,665 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 11:01:24,665 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-17 11:01:24,665 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-10-17 11:01:24,665 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 11:01:24,666 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_1c9b00ac-bdd9-48fd-a36f-8c8e6fb6c7b5/bin/uautomizer-J5u9QxTXDZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c9b00ac-bdd9-48fd-a36f-8c8e6fb6c7b5/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d9dc4c1afb888b23c0ebc469c8090d62842d0a0c5570d5e56681453b5bd49afb [2022-10-17 11:01:25,019 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 11:01:25,048 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 11:01:25,051 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 11:01:25,053 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 11:01:25,054 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 11:01:25,055 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c9b00ac-bdd9-48fd-a36f-8c8e6fb6c7b5/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.6.2.ufo.BOUNDED-12.pals.c.p+lhb-reducer.c [2022-10-17 11:01:25,130 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c9b00ac-bdd9-48fd-a36f-8c8e6fb6c7b5/bin/uautomizer-J5u9QxTXDZ/data/1ba283e1f/a51c89cb0b0442ddbf9d2f3623064ee2/FLAGb1fd0dd2a [2022-10-17 11:01:25,748 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 11:01:25,749 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c9b00ac-bdd9-48fd-a36f-8c8e6fb6c7b5/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.6.2.ufo.BOUNDED-12.pals.c.p+lhb-reducer.c [2022-10-17 11:01:25,781 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c9b00ac-bdd9-48fd-a36f-8c8e6fb6c7b5/bin/uautomizer-J5u9QxTXDZ/data/1ba283e1f/a51c89cb0b0442ddbf9d2f3623064ee2/FLAGb1fd0dd2a [2022-10-17 11:01:26,025 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c9b00ac-bdd9-48fd-a36f-8c8e6fb6c7b5/bin/uautomizer-J5u9QxTXDZ/data/1ba283e1f/a51c89cb0b0442ddbf9d2f3623064ee2 [2022-10-17 11:01:26,029 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 11:01:26,031 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 11:01:26,033 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 11:01:26,033 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 11:01:26,037 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 11:01:26,038 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 11:01:26" (1/1) ... [2022-10-17 11:01:26,039 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7bac2cbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:01:26, skipping insertion in model container [2022-10-17 11:01:26,040 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 11:01:26" (1/1) ... [2022-10-17 11:01:26,048 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 11:01:26,121 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 11:01:26,616 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_1c9b00ac-bdd9-48fd-a36f-8c8e6fb6c7b5/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.6.2.ufo.BOUNDED-12.pals.c.p+lhb-reducer.c[15364,15377] [2022-10-17 11:01:26,764 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 11:01:26,794 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 11:01:26,998 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_1c9b00ac-bdd9-48fd-a36f-8c8e6fb6c7b5/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.6.2.ufo.BOUNDED-12.pals.c.p+lhb-reducer.c[15364,15377] [2022-10-17 11:01:27,181 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 11:01:27,206 INFO L208 MainTranslator]: Completed translation [2022-10-17 11:01:27,207 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:01:27 WrapperNode [2022-10-17 11:01:27,207 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 11:01:27,209 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 11:01:27,209 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 11:01:27,209 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 11:01:27,218 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:01:27" (1/1) ... [2022-10-17 11:01:27,250 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:01:27" (1/1) ... [2022-10-17 11:01:27,354 INFO L138 Inliner]: procedures = 25, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1589 [2022-10-17 11:01:27,354 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 11:01:27,355 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 11:01:27,355 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 11:01:27,356 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 11:01:27,367 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:01:27" (1/1) ... [2022-10-17 11:01:27,367 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:01:27" (1/1) ... [2022-10-17 11:01:27,380 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:01:27" (1/1) ... [2022-10-17 11:01:27,381 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:01:27" (1/1) ... [2022-10-17 11:01:27,409 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:01:27" (1/1) ... [2022-10-17 11:01:27,440 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:01:27" (1/1) ... [2022-10-17 11:01:27,445 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:01:27" (1/1) ... [2022-10-17 11:01:27,451 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:01:27" (1/1) ... [2022-10-17 11:01:27,467 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 11:01:27,468 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 11:01:27,469 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 11:01:27,469 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 11:01:27,470 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:01:27" (1/1) ... [2022-10-17 11:01:27,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 11:01:27,497 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c9b00ac-bdd9-48fd-a36f-8c8e6fb6c7b5/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 11:01:27,522 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c9b00ac-bdd9-48fd-a36f-8c8e6fb6c7b5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 11:01:27,535 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c9b00ac-bdd9-48fd-a36f-8c8e6fb6c7b5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 11:01:27,579 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 11:01:27,579 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 11:01:27,580 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 11:01:27,580 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 11:01:27,832 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 11:01:27,834 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 11:01:29,351 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 11:01:29,384 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 11:01:29,385 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-10-17 11:01:29,389 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 11:01:29 BoogieIcfgContainer [2022-10-17 11:01:29,390 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 11:01:29,393 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 11:01:29,394 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 11:01:29,399 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 11:01:29,400 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 11:01:26" (1/3) ... [2022-10-17 11:01:29,401 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@722c12c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 11:01:29, skipping insertion in model container [2022-10-17 11:01:29,401 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:01:27" (2/3) ... [2022-10-17 11:01:29,401 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@722c12c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 11:01:29, skipping insertion in model container [2022-10-17 11:01:29,402 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 11:01:29" (3/3) ... [2022-10-17 11:01:29,403 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.6.2.ufo.BOUNDED-12.pals.c.p+lhb-reducer.c [2022-10-17 11:01:29,424 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 11:01:29,424 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 11:01:29,520 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 11:01:29,528 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;@6d5db0bf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 11:01:29,528 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-17 11:01:29,536 INFO L276 IsEmpty]: Start isEmpty. Operand has 487 states, 485 states have (on average 1.6494845360824741) internal successors, (800), 486 states have internal predecessors, (800), 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) [2022-10-17 11:01:29,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-10-17 11:01:29,565 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 11:01:29,566 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] [2022-10-17 11:01:29,567 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 11:01:29,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:01:29,573 INFO L85 PathProgramCache]: Analyzing trace with hash 1982597538, now seen corresponding path program 1 times [2022-10-17 11:01:29,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:01:29,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170137538] [2022-10-17 11:01:29,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:01:29,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:01:29,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:01:30,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:01:30,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:01:30,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170137538] [2022-10-17 11:01:30,368 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170137538] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:01:30,368 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:01:30,368 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-17 11:01:30,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632143043] [2022-10-17 11:01:30,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:01:30,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 11:01:30,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:01:30,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 11:01:30,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-17 11:01:30,417 INFO L87 Difference]: Start difference. First operand has 487 states, 485 states have (on average 1.6494845360824741) internal successors, (800), 486 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 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) [2022-10-17 11:01:30,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 11:01:30,693 INFO L93 Difference]: Finished difference Result 937 states and 1520 transitions. [2022-10-17 11:01:30,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-17 11:01:30,697 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 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 119 [2022-10-17 11:01:30,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 11:01:30,728 INFO L225 Difference]: With dead ends: 937 [2022-10-17 11:01:30,728 INFO L226 Difference]: Without dead ends: 484 [2022-10-17 11:01:30,739 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-17 11:01:30,748 INFO L413 NwaCegarLoop]: 794 mSDtfsCounter, 184 mSDsluCounter, 1361 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 2155 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 11:01:30,750 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [184 Valid, 2155 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 11:01:30,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 484 states. [2022-10-17 11:01:30,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 484 to 484. [2022-10-17 11:01:30,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 484 states, 483 states have (on average 1.5486542443064182) internal successors, (748), 483 states have internal predecessors, (748), 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) [2022-10-17 11:01:30,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 484 states to 484 states and 748 transitions. [2022-10-17 11:01:30,861 INFO L78 Accepts]: Start accepts. Automaton has 484 states and 748 transitions. Word has length 119 [2022-10-17 11:01:30,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 11:01:30,861 INFO L495 AbstractCegarLoop]: Abstraction has 484 states and 748 transitions. [2022-10-17 11:01:30,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 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) [2022-10-17 11:01:30,863 INFO L276 IsEmpty]: Start isEmpty. Operand 484 states and 748 transitions. [2022-10-17 11:01:30,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-10-17 11:01:30,880 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 11:01:30,880 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] [2022-10-17 11:01:30,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 11:01:30,881 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 11:01:30,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:01:30,882 INFO L85 PathProgramCache]: Analyzing trace with hash 1369129713, now seen corresponding path program 1 times [2022-10-17 11:01:30,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:01:30,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309358084] [2022-10-17 11:01:30,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:01:30,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:01:30,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:01:31,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:01:31,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:01:31,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309358084] [2022-10-17 11:01:31,212 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309358084] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:01:31,212 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:01:31,213 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 11:01:31,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695964672] [2022-10-17 11:01:31,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:01:31,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 11:01:31,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:01:31,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 11:01:31,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 11:01:31,219 INFO L87 Difference]: Start difference. First operand 484 states and 748 transitions. Second operand has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 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) [2022-10-17 11:01:31,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 11:01:31,350 INFO L93 Difference]: Finished difference Result 1159 states and 1827 transitions. [2022-10-17 11:01:31,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 11:01:31,353 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 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 159 [2022-10-17 11:01:31,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 11:01:31,359 INFO L225 Difference]: With dead ends: 1159 [2022-10-17 11:01:31,360 INFO L226 Difference]: Without dead ends: 746 [2022-10-17 11:01:31,365 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 [2022-10-17 11:01:31,367 INFO L413 NwaCegarLoop]: 884 mSDtfsCounter, 505 mSDsluCounter, 602 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 505 SdHoareTripleChecker+Valid, 1486 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 11:01:31,369 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [505 Valid, 1486 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 11:01:31,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 746 states. [2022-10-17 11:01:31,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 746 to 744. [2022-10-17 11:01:31,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 744 states, 743 states have (on average 1.5625841184387619) internal successors, (1161), 743 states have internal predecessors, (1161), 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) [2022-10-17 11:01:31,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1161 transitions. [2022-10-17 11:01:31,432 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1161 transitions. Word has length 159 [2022-10-17 11:01:31,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 11:01:31,435 INFO L495 AbstractCegarLoop]: Abstraction has 744 states and 1161 transitions. [2022-10-17 11:01:31,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 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) [2022-10-17 11:01:31,436 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1161 transitions. [2022-10-17 11:01:31,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-10-17 11:01:31,440 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 11:01:31,441 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] [2022-10-17 11:01:31,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-17 11:01:31,445 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 11:01:31,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:01:31,453 INFO L85 PathProgramCache]: Analyzing trace with hash -319550929, now seen corresponding path program 1 times [2022-10-17 11:01:31,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:01:31,454 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928373148] [2022-10-17 11:01:31,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:01:31,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:01:31,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:01:31,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:01:31,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:01:31,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928373148] [2022-10-17 11:01:31,653 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928373148] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:01:31,654 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:01:31,654 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 11:01:31,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338541500] [2022-10-17 11:01:31,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:01:31,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 11:01:31,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:01:31,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 11:01:31,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 11:01:31,657 INFO L87 Difference]: Start difference. First operand 744 states and 1161 transitions. Second operand has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 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) [2022-10-17 11:01:31,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 11:01:31,821 INFO L93 Difference]: Finished difference Result 1863 states and 2947 transitions. [2022-10-17 11:01:31,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 11:01:31,822 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 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 161 [2022-10-17 11:01:31,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 11:01:31,832 INFO L225 Difference]: With dead ends: 1863 [2022-10-17 11:01:31,832 INFO L226 Difference]: Without dead ends: 1203 [2022-10-17 11:01:31,836 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 [2022-10-17 11:01:31,842 INFO L413 NwaCegarLoop]: 725 mSDtfsCounter, 491 mSDsluCounter, 577 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 491 SdHoareTripleChecker+Valid, 1302 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 11:01:31,844 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [491 Valid, 1302 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 11:01:31,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1203 states. [2022-10-17 11:01:31,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1203 to 1201. [2022-10-17 11:01:31,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1201 states, 1200 states have (on average 1.5708333333333333) internal successors, (1885), 1200 states have internal predecessors, (1885), 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) [2022-10-17 11:01:31,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1201 states to 1201 states and 1885 transitions. [2022-10-17 11:01:31,945 INFO L78 Accepts]: Start accepts. Automaton has 1201 states and 1885 transitions. Word has length 161 [2022-10-17 11:01:31,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 11:01:31,946 INFO L495 AbstractCegarLoop]: Abstraction has 1201 states and 1885 transitions. [2022-10-17 11:01:31,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 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) [2022-10-17 11:01:31,946 INFO L276 IsEmpty]: Start isEmpty. Operand 1201 states and 1885 transitions. [2022-10-17 11:01:31,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-10-17 11:01:31,953 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 11:01:31,954 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] [2022-10-17 11:01:31,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-17 11:01:31,954 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 11:01:31,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:01:31,958 INFO L85 PathProgramCache]: Analyzing trace with hash 1930829335, now seen corresponding path program 1 times [2022-10-17 11:01:31,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:01:31,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153673410] [2022-10-17 11:01:31,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:01:31,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:01:32,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:01:32,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:01:32,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:01:32,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153673410] [2022-10-17 11:01:32,104 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153673410] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:01:32,105 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:01:32,105 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 11:01:32,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854005625] [2022-10-17 11:01:32,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:01:32,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 11:01:32,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:01:32,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 11:01:32,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 11:01:32,109 INFO L87 Difference]: Start difference. First operand 1201 states and 1885 transitions. Second operand has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 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) [2022-10-17 11:01:32,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 11:01:32,339 INFO L93 Difference]: Finished difference Result 3090 states and 4890 transitions. [2022-10-17 11:01:32,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 11:01:32,340 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 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 163 [2022-10-17 11:01:32,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 11:01:32,357 INFO L225 Difference]: With dead ends: 3090 [2022-10-17 11:01:32,357 INFO L226 Difference]: Without dead ends: 1986 [2022-10-17 11:01:32,359 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 [2022-10-17 11:01:32,367 INFO L413 NwaCegarLoop]: 715 mSDtfsCounter, 476 mSDsluCounter, 552 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 476 SdHoareTripleChecker+Valid, 1267 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 11:01:32,369 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [476 Valid, 1267 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 11:01:32,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1986 states. [2022-10-17 11:01:32,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1986 to 1984. [2022-10-17 11:01:32,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1984 states, 1983 states have (on average 1.572869389813414) internal successors, (3119), 1983 states have internal predecessors, (3119), 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) [2022-10-17 11:01:32,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1984 states to 1984 states and 3119 transitions. [2022-10-17 11:01:32,572 INFO L78 Accepts]: Start accepts. Automaton has 1984 states and 3119 transitions. Word has length 163 [2022-10-17 11:01:32,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 11:01:32,574 INFO L495 AbstractCegarLoop]: Abstraction has 1984 states and 3119 transitions. [2022-10-17 11:01:32,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 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) [2022-10-17 11:01:32,574 INFO L276 IsEmpty]: Start isEmpty. Operand 1984 states and 3119 transitions. [2022-10-17 11:01:32,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-10-17 11:01:32,581 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 11:01:32,582 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] [2022-10-17 11:01:32,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-17 11:01:32,582 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 11:01:32,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:01:32,583 INFO L85 PathProgramCache]: Analyzing trace with hash -329393929, now seen corresponding path program 1 times [2022-10-17 11:01:32,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:01:32,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962241207] [2022-10-17 11:01:32,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:01:32,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:01:32,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:01:32,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:01:32,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:01:32,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962241207] [2022-10-17 11:01:32,753 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962241207] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:01:32,754 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:01:32,754 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 11:01:32,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452447266] [2022-10-17 11:01:32,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:01:32,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 11:01:32,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:01:32,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 11:01:32,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 11:01:32,756 INFO L87 Difference]: Start difference. First operand 1984 states and 3119 transitions. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 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) [2022-10-17 11:01:33,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 11:01:33,170 INFO L93 Difference]: Finished difference Result 5159 states and 8143 transitions. [2022-10-17 11:01:33,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 11:01:33,171 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 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 165 [2022-10-17 11:01:33,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 11:01:33,192 INFO L225 Difference]: With dead ends: 5159 [2022-10-17 11:01:33,193 INFO L226 Difference]: Without dead ends: 3285 [2022-10-17 11:01:33,199 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 [2022-10-17 11:01:33,200 INFO L413 NwaCegarLoop]: 854 mSDtfsCounter, 460 mSDsluCounter, 527 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 460 SdHoareTripleChecker+Valid, 1381 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 11:01:33,201 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [460 Valid, 1381 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 11:01:33,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3285 states. [2022-10-17 11:01:33,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3285 to 3283. [2022-10-17 11:01:33,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3283 states, 3282 states have (on average 1.568860450944546) internal successors, (5149), 3282 states have internal predecessors, (5149), 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) [2022-10-17 11:01:33,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3283 states to 3283 states and 5149 transitions. [2022-10-17 11:01:33,561 INFO L78 Accepts]: Start accepts. Automaton has 3283 states and 5149 transitions. Word has length 165 [2022-10-17 11:01:33,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 11:01:33,563 INFO L495 AbstractCegarLoop]: Abstraction has 3283 states and 5149 transitions. [2022-10-17 11:01:33,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 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) [2022-10-17 11:01:33,567 INFO L276 IsEmpty]: Start isEmpty. Operand 3283 states and 5149 transitions. [2022-10-17 11:01:33,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-10-17 11:01:33,576 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 11:01:33,576 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] [2022-10-17 11:01:33,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-10-17 11:01:33,577 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 11:01:33,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:01:33,578 INFO L85 PathProgramCache]: Analyzing trace with hash 1942661269, now seen corresponding path program 1 times [2022-10-17 11:01:33,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:01:33,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209497156] [2022-10-17 11:01:33,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:01:33,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:01:33,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:01:33,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:01:33,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:01:33,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209497156] [2022-10-17 11:01:33,737 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209497156] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:01:33,737 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:01:33,737 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 11:01:33,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643073645] [2022-10-17 11:01:33,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:01:33,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 11:01:33,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:01:33,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 11:01:33,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 11:01:33,739 INFO L87 Difference]: Start difference. First operand 3283 states and 5149 transitions. Second operand has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 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) [2022-10-17 11:01:34,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 11:01:34,378 INFO L93 Difference]: Finished difference Result 8504 states and 13344 transitions. [2022-10-17 11:01:34,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 11:01:34,380 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 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 167 [2022-10-17 11:01:34,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 11:01:34,417 INFO L225 Difference]: With dead ends: 8504 [2022-10-17 11:01:34,417 INFO L226 Difference]: Without dead ends: 5344 [2022-10-17 11:01:34,423 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 [2022-10-17 11:01:34,424 INFO L413 NwaCegarLoop]: 844 mSDtfsCounter, 445 mSDsluCounter, 502 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 445 SdHoareTripleChecker+Valid, 1346 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 11:01:34,425 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [445 Valid, 1346 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 11:01:34,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5344 states. [2022-10-17 11:01:35,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5344 to 5342. [2022-10-17 11:01:35,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5342 states, 5341 states have (on average 1.5583224115334207) internal successors, (8323), 5341 states have internal predecessors, (8323), 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) [2022-10-17 11:01:35,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5342 states to 5342 states and 8323 transitions. [2022-10-17 11:01:35,139 INFO L78 Accepts]: Start accepts. Automaton has 5342 states and 8323 transitions. Word has length 167 [2022-10-17 11:01:35,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 11:01:35,140 INFO L495 AbstractCegarLoop]: Abstraction has 5342 states and 8323 transitions. [2022-10-17 11:01:35,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 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) [2022-10-17 11:01:35,141 INFO L276 IsEmpty]: Start isEmpty. Operand 5342 states and 8323 transitions. [2022-10-17 11:01:35,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-10-17 11:01:35,194 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 11:01:35,195 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] [2022-10-17 11:01:35,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-10-17 11:01:35,195 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 11:01:35,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:01:35,196 INFO L85 PathProgramCache]: Analyzing trace with hash 667335103, now seen corresponding path program 1 times [2022-10-17 11:01:35,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:01:35,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339886123] [2022-10-17 11:01:35,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:01:35,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:01:35,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:01:35,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:01:35,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:01:35,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339886123] [2022-10-17 11:01:35,549 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339886123] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:01:35,549 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:01:35,549 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-10-17 11:01:35,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49144455] [2022-10-17 11:01:35,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:01:35,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-17 11:01:35,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:01:35,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-17 11:01:35,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-10-17 11:01:35,552 INFO L87 Difference]: Start difference. First operand 5342 states and 8323 transitions. Second operand has 8 states, 8 states have (on average 21.125) internal successors, (169), 8 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:01:39,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 11:01:39,776 INFO L93 Difference]: Finished difference Result 36365 states and 56593 transitions. [2022-10-17 11:01:39,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-17 11:01:39,777 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 21.125) internal successors, (169), 8 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 169 [2022-10-17 11:01:39,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 11:01:39,946 INFO L225 Difference]: With dead ends: 36365 [2022-10-17 11:01:39,946 INFO L226 Difference]: Without dead ends: 31150 [2022-10-17 11:01:39,963 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2022-10-17 11:01:39,964 INFO L413 NwaCegarLoop]: 698 mSDtfsCounter, 8353 mSDsluCounter, 6304 mSDsCounter, 0 mSdLazyCounter, 278 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8353 SdHoareTripleChecker+Valid, 7002 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-10-17 11:01:39,965 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8353 Valid, 7002 Invalid, 291 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [13 Valid, 278 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-10-17 11:01:40,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31150 states. [2022-10-17 11:01:41,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31150 to 10625. [2022-10-17 11:01:41,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10625 states, 10624 states have (on average 1.5423569277108433) internal successors, (16386), 10624 states have internal predecessors, (16386), 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) [2022-10-17 11:01:42,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10625 states to 10625 states and 16386 transitions. [2022-10-17 11:01:42,022 INFO L78 Accepts]: Start accepts. Automaton has 10625 states and 16386 transitions. Word has length 169 [2022-10-17 11:01:42,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 11:01:42,022 INFO L495 AbstractCegarLoop]: Abstraction has 10625 states and 16386 transitions. [2022-10-17 11:01:42,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.125) internal successors, (169), 8 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:01:42,023 INFO L276 IsEmpty]: Start isEmpty. Operand 10625 states and 16386 transitions. [2022-10-17 11:01:42,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-10-17 11:01:42,052 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 11:01:42,053 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] [2022-10-17 11:01:42,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-10-17 11:01:42,053 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 11:01:42,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:01:42,054 INFO L85 PathProgramCache]: Analyzing trace with hash 1376750317, now seen corresponding path program 1 times [2022-10-17 11:01:42,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:01:42,054 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282850221] [2022-10-17 11:01:42,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:01:42,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:01:42,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:01:42,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:01:42,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:01:42,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282850221] [2022-10-17 11:01:42,167 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282850221] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:01:42,167 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:01:42,167 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 11:01:42,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90828529] [2022-10-17 11:01:42,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:01:42,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 11:01:42,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:01:42,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 11:01:42,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 11:01:42,170 INFO L87 Difference]: Start difference. First operand 10625 states and 16386 transitions. Second operand has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 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) [2022-10-17 11:01:45,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 11:01:45,129 INFO L93 Difference]: Finished difference Result 30001 states and 46188 transitions. [2022-10-17 11:01:45,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 11:01:45,130 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 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 172 [2022-10-17 11:01:45,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 11:01:45,190 INFO L225 Difference]: With dead ends: 30001 [2022-10-17 11:01:45,190 INFO L226 Difference]: Without dead ends: 19429 [2022-10-17 11:01:45,208 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 [2022-10-17 11:01:45,209 INFO L413 NwaCegarLoop]: 995 mSDtfsCounter, 501 mSDsluCounter, 599 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 501 SdHoareTripleChecker+Valid, 1594 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 11:01:45,210 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [501 Valid, 1594 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 11:01:45,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19429 states. [2022-10-17 11:01:48,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19429 to 19427. [2022-10-17 11:01:48,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19427 states, 19426 states have (on average 1.530371666838258) internal successors, (29729), 19426 states have internal predecessors, (29729), 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) [2022-10-17 11:01:48,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19427 states to 19427 states and 29729 transitions. [2022-10-17 11:01:48,380 INFO L78 Accepts]: Start accepts. Automaton has 19427 states and 29729 transitions. Word has length 172 [2022-10-17 11:01:48,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 11:01:48,381 INFO L495 AbstractCegarLoop]: Abstraction has 19427 states and 29729 transitions. [2022-10-17 11:01:48,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 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) [2022-10-17 11:01:48,382 INFO L276 IsEmpty]: Start isEmpty. Operand 19427 states and 29729 transitions. [2022-10-17 11:01:48,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2022-10-17 11:01:48,441 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 11:01:48,441 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] [2022-10-17 11:01:48,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-10-17 11:01:48,442 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 11:01:48,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:01:48,442 INFO L85 PathProgramCache]: Analyzing trace with hash 1365392284, now seen corresponding path program 1 times [2022-10-17 11:01:48,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:01:48,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040484179] [2022-10-17 11:01:48,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:01:48,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:01:48,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:01:48,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:01:48,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:01:48,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040484179] [2022-10-17 11:01:48,593 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040484179] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:01:48,593 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:01:48,593 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 11:01:48,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047586223] [2022-10-17 11:01:48,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:01:48,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 11:01:48,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:01:48,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 11:01:48,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 11:01:48,596 INFO L87 Difference]: Start difference. First operand 19427 states and 29729 transitions. Second operand has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 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) [2022-10-17 11:01:53,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 11:01:53,439 INFO L93 Difference]: Finished difference Result 55497 states and 84710 transitions. [2022-10-17 11:01:53,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 11:01:53,441 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 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 173 [2022-10-17 11:01:53,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 11:01:53,543 INFO L225 Difference]: With dead ends: 55497 [2022-10-17 11:01:53,544 INFO L226 Difference]: Without dead ends: 36971 [2022-10-17 11:01:53,577 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 [2022-10-17 11:01:53,578 INFO L413 NwaCegarLoop]: 680 mSDtfsCounter, 496 mSDsluCounter, 637 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 1317 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 11:01:53,578 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [496 Valid, 1317 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 11:01:53,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36971 states.