./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/pals_floodmax.3.2.ufo.BOUNDED-6.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68f36226-d05f-451b-af43-fa57f9f9691d/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68f36226-d05f-451b-af43-fa57f9f9691d/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68f36226-d05f-451b-af43-fa57f9f9691d/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68f36226-d05f-451b-af43-fa57f9f9691d/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/pals_floodmax.3.2.ufo.BOUNDED-6.pals.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68f36226-d05f-451b-af43-fa57f9f9691d/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68f36226-d05f-451b-af43-fa57f9f9691d/bin/uautomizer-Dbtcem3rbc --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 708f088db085ec098a8544d76f8abbece9dbe61a183e0bc1703749c9af891b6b --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-02 20:56:19,488 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:56:19,490 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:56:19,545 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:56:19,545 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:56:19,551 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:56:19,552 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:56:19,554 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:56:19,556 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:56:19,557 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:56:19,558 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:56:19,559 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:56:19,560 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:56:19,561 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:56:19,562 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:56:19,567 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:56:19,569 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:56:19,577 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:56:19,580 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:56:19,590 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:56:19,592 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:56:19,600 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:56:19,601 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:56:19,602 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:56:19,606 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:56:19,606 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:56:19,606 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:56:19,607 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:56:19,608 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:56:19,609 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:56:19,609 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:56:19,610 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:56:19,614 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:56:19,615 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:56:19,616 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:56:19,617 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:56:19,618 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:56:19,618 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:56:19,618 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:56:19,619 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:56:19,620 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:56:19,621 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68f36226-d05f-451b-af43-fa57f9f9691d/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-02 20:56:19,643 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:56:19,644 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:56:19,644 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:56:19,644 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:56:19,645 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:56:19,645 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:56:19,646 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:56:19,646 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:56:19,647 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:56:19,647 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:56:19,647 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 20:56:19,647 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:56:19,648 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 20:56:19,648 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:56:19,648 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:56:19,648 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:56:19,649 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:56:19,649 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 20:56:19,649 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:56:19,649 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:56:19,649 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:56:19,650 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:56:19,650 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:56:19,650 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:56:19,650 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:56:19,651 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:56:19,651 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:56:19,651 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:56:19,652 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:56:19,652 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:56:19,652 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:56:19,652 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:56:19,652 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:56:19,653 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_68f36226-d05f-451b-af43-fa57f9f9691d/bin/uautomizer-Dbtcem3rbc/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68f36226-d05f-451b-af43-fa57f9f9691d/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 708f088db085ec098a8544d76f8abbece9dbe61a183e0bc1703749c9af891b6b [2022-11-02 20:56:19,998 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:56:20,040 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:56:20,043 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:56:20,045 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:56:20,045 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:56:20,047 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68f36226-d05f-451b-af43-fa57f9f9691d/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/seq-mthreaded/pals_floodmax.3.2.ufo.BOUNDED-6.pals.c [2022-11-02 20:56:20,131 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68f36226-d05f-451b-af43-fa57f9f9691d/bin/uautomizer-Dbtcem3rbc/data/e32283d94/970bd31a9e0443ac83d7738fd4f9402c/FLAGf47046cd2 [2022-11-02 20:56:20,782 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:56:20,783 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68f36226-d05f-451b-af43-fa57f9f9691d/sv-benchmarks/c/seq-mthreaded/pals_floodmax.3.2.ufo.BOUNDED-6.pals.c [2022-11-02 20:56:20,800 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68f36226-d05f-451b-af43-fa57f9f9691d/bin/uautomizer-Dbtcem3rbc/data/e32283d94/970bd31a9e0443ac83d7738fd4f9402c/FLAGf47046cd2 [2022-11-02 20:56:21,064 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68f36226-d05f-451b-af43-fa57f9f9691d/bin/uautomizer-Dbtcem3rbc/data/e32283d94/970bd31a9e0443ac83d7738fd4f9402c [2022-11-02 20:56:21,067 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:56:21,068 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:56:21,073 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:56:21,074 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:56:21,078 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:56:21,079 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:56:21" (1/1) ... [2022-11-02 20:56:21,081 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@375ee153 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:56:21, skipping insertion in model container [2022-11-02 20:56:21,081 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:56:21" (1/1) ... [2022-11-02 20:56:21,089 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:56:21,132 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:56:21,487 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_68f36226-d05f-451b-af43-fa57f9f9691d/sv-benchmarks/c/seq-mthreaded/pals_floodmax.3.2.ufo.BOUNDED-6.pals.c[12764,12777] [2022-11-02 20:56:21,492 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:56:21,506 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:56:21,605 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_68f36226-d05f-451b-af43-fa57f9f9691d/sv-benchmarks/c/seq-mthreaded/pals_floodmax.3.2.ufo.BOUNDED-6.pals.c[12764,12777] [2022-11-02 20:56:21,605 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:56:21,623 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:56:21,623 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:56:21 WrapperNode [2022-11-02 20:56:21,623 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:56:21,625 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:56:21,625 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:56:21,625 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:56:21,633 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:56:21" (1/1) ... [2022-11-02 20:56:21,654 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:56:21" (1/1) ... [2022-11-02 20:56:21,705 INFO L138 Inliner]: procedures = 21, calls = 13, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 441 [2022-11-02 20:56:21,715 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:56:21,716 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:56:21,717 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:56:21,717 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:56:21,728 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:56:21" (1/1) ... [2022-11-02 20:56:21,729 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:56:21" (1/1) ... [2022-11-02 20:56:21,745 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:56:21" (1/1) ... [2022-11-02 20:56:21,748 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:56:21" (1/1) ... [2022-11-02 20:56:21,755 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:56:21" (1/1) ... [2022-11-02 20:56:21,769 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:56:21" (1/1) ... [2022-11-02 20:56:21,782 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:56:21" (1/1) ... [2022-11-02 20:56:21,784 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:56:21" (1/1) ... [2022-11-02 20:56:21,787 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:56:21,788 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:56:21,794 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:56:21,795 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:56:21,796 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:56:21" (1/1) ... [2022-11-02 20:56:21,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:56:21,816 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68f36226-d05f-451b-af43-fa57f9f9691d/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:56:21,832 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68f36226-d05f-451b-af43-fa57f9f9691d/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:56:21,846 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68f36226-d05f-451b-af43-fa57f9f9691d/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:56:21,880 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:56:21,880 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 20:56:21,881 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:56:21,881 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:56:22,034 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:56:22,036 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:56:22,697 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:56:22,707 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:56:22,708 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-02 20:56:22,710 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:56:22 BoogieIcfgContainer [2022-11-02 20:56:22,711 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:56:22,714 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:56:22,714 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:56:22,718 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:56:22,719 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:56:21" (1/3) ... [2022-11-02 20:56:22,720 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33bcb3b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:56:22, skipping insertion in model container [2022-11-02 20:56:22,720 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:56:21" (2/3) ... [2022-11-02 20:56:22,721 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33bcb3b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:56:22, skipping insertion in model container [2022-11-02 20:56:22,721 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:56:22" (3/3) ... [2022-11-02 20:56:22,723 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.2.ufo.BOUNDED-6.pals.c [2022-11-02 20:56:22,747 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:56:22,748 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 20:56:22,805 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:56:22,812 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;@3c550829, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:56:22,812 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 20:56:22,817 INFO L276 IsEmpty]: Start isEmpty. Operand has 131 states, 129 states have (on average 1.7596899224806202) internal successors, (227), 130 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:22,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-02 20:56:22,828 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:56:22,828 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] [2022-11-02 20:56:22,829 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:56:22,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:22,835 INFO L85 PathProgramCache]: Analyzing trace with hash -306716250, now seen corresponding path program 1 times [2022-11-02 20:56:22,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:56:22,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206302818] [2022-11-02 20:56:22,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:22,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:56:23,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:23,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:56:23,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:56:23,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206302818] [2022-11-02 20:56:23,186 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206302818] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:56:23,191 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:56:23,191 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:56:23,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568973247] [2022-11-02 20:56:23,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:56:23,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-02 20:56:23,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:56:23,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-02 20:56:23,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-02 20:56:23,241 INFO L87 Difference]: Start difference. First operand has 131 states, 129 states have (on average 1.7596899224806202) internal successors, (227), 130 states have internal predecessors, (227), 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 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:23,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:56:23,291 INFO L93 Difference]: Finished difference Result 206 states and 352 transitions. [2022-11-02 20:56:23,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-02 20:56:23,294 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 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 37 [2022-11-02 20:56:23,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:56:23,310 INFO L225 Difference]: With dead ends: 206 [2022-11-02 20:56:23,310 INFO L226 Difference]: Without dead ends: 127 [2022-11-02 20:56:23,315 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-02 20:56:23,320 INFO L413 NwaCegarLoop]: 224 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 224 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:56:23,321 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:56:23,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2022-11-02 20:56:23,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2022-11-02 20:56:23,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 126 states have (on average 1.746031746031746) internal successors, (220), 126 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:23,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 220 transitions. [2022-11-02 20:56:23,384 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 220 transitions. Word has length 37 [2022-11-02 20:56:23,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:56:23,386 INFO L495 AbstractCegarLoop]: Abstraction has 127 states and 220 transitions. [2022-11-02 20:56:23,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:23,388 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 220 transitions. [2022-11-02 20:56:23,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-02 20:56:23,392 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:56:23,392 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] [2022-11-02 20:56:23,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:56:23,393 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:56:23,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:23,394 INFO L85 PathProgramCache]: Analyzing trace with hash -1124364700, now seen corresponding path program 1 times [2022-11-02 20:56:23,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:56:23,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454735476] [2022-11-02 20:56:23,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:23,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:56:23,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:23,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:56:23,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:56:23,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454735476] [2022-11-02 20:56:23,686 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454735476] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:56:23,686 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:56:23,686 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:56:23,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081051030] [2022-11-02 20:56:23,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:56:23,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:56:23,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:56:23,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:56:23,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:56:23,692 INFO L87 Difference]: Start difference. First operand 127 states and 220 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:23,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:56:23,849 INFO L93 Difference]: Finished difference Result 271 states and 460 transitions. [2022-11-02 20:56:23,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 20:56:23,857 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 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 37 [2022-11-02 20:56:23,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:56:23,859 INFO L225 Difference]: With dead ends: 271 [2022-11-02 20:56:23,859 INFO L226 Difference]: Without dead ends: 197 [2022-11-02 20:56:23,860 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:56:23,861 INFO L413 NwaCegarLoop]: 216 mSDtfsCounter, 120 mSDsluCounter, 616 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 832 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:56:23,862 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 832 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:56:23,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2022-11-02 20:56:23,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 127. [2022-11-02 20:56:23,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 126 states have (on average 1.5317460317460319) internal successors, (193), 126 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:23,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 193 transitions. [2022-11-02 20:56:23,887 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 193 transitions. Word has length 37 [2022-11-02 20:56:23,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:56:23,889 INFO L495 AbstractCegarLoop]: Abstraction has 127 states and 193 transitions. [2022-11-02 20:56:23,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:23,889 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 193 transitions. [2022-11-02 20:56:23,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-02 20:56:23,894 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:56:23,894 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] [2022-11-02 20:56:23,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 20:56:23,895 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:56:23,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:23,895 INFO L85 PathProgramCache]: Analyzing trace with hash -1313145683, now seen corresponding path program 1 times [2022-11-02 20:56:23,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:56:23,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349482349] [2022-11-02 20:56:23,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:23,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:56:23,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:24,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:56:24,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:56:24,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349482349] [2022-11-02 20:56:24,106 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349482349] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:56:24,107 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:56:24,107 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:56:24,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119344074] [2022-11-02 20:56:24,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:56:24,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:56:24,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:56:24,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:56:24,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:56:24,110 INFO L87 Difference]: Start difference. First operand 127 states and 193 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:24,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:56:24,183 INFO L93 Difference]: Finished difference Result 258 states and 412 transitions. [2022-11-02 20:56:24,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:56:24,184 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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 63 [2022-11-02 20:56:24,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:56:24,185 INFO L225 Difference]: With dead ends: 258 [2022-11-02 20:56:24,185 INFO L226 Difference]: Without dead ends: 188 [2022-11-02 20:56:24,186 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:56:24,187 INFO L413 NwaCegarLoop]: 268 mSDtfsCounter, 93 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 421 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:56:24,193 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 421 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:56:24,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2022-11-02 20:56:24,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 186. [2022-11-02 20:56:24,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 185 states have (on average 1.5567567567567568) internal successors, (288), 185 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:24,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 288 transitions. [2022-11-02 20:56:24,213 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 288 transitions. Word has length 63 [2022-11-02 20:56:24,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:56:24,213 INFO L495 AbstractCegarLoop]: Abstraction has 186 states and 288 transitions. [2022-11-02 20:56:24,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:24,214 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 288 transitions. [2022-11-02 20:56:24,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-02 20:56:24,220 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:56:24,220 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] [2022-11-02 20:56:24,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 20:56:24,220 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:56:24,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:24,221 INFO L85 PathProgramCache]: Analyzing trace with hash -255493166, now seen corresponding path program 1 times [2022-11-02 20:56:24,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:56:24,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259138758] [2022-11-02 20:56:24,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:24,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:56:24,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:24,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:56:24,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:56:24,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259138758] [2022-11-02 20:56:24,356 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259138758] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:56:24,356 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:56:24,356 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:56:24,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771914913] [2022-11-02 20:56:24,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:56:24,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:56:24,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:56:24,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:56:24,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:56:24,358 INFO L87 Difference]: Start difference. First operand 186 states and 288 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:24,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:56:24,381 INFO L93 Difference]: Finished difference Result 313 states and 501 transitions. [2022-11-02 20:56:24,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:56:24,382 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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 65 [2022-11-02 20:56:24,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:56:24,396 INFO L225 Difference]: With dead ends: 313 [2022-11-02 20:56:24,396 INFO L226 Difference]: Without dead ends: 243 [2022-11-02 20:56:24,397 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:56:24,398 INFO L413 NwaCegarLoop]: 273 mSDtfsCounter, 102 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 441 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:56:24,399 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 441 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:56:24,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2022-11-02 20:56:24,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 241. [2022-11-02 20:56:24,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 240 states have (on average 1.5833333333333333) internal successors, (380), 240 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:24,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 380 transitions. [2022-11-02 20:56:24,431 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 380 transitions. Word has length 65 [2022-11-02 20:56:24,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:56:24,434 INFO L495 AbstractCegarLoop]: Abstraction has 241 states and 380 transitions. [2022-11-02 20:56:24,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:24,434 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 380 transitions. [2022-11-02 20:56:24,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-02 20:56:24,437 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:56:24,438 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] [2022-11-02 20:56:24,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-02 20:56:24,438 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:56:24,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:24,439 INFO L85 PathProgramCache]: Analyzing trace with hash 1395779292, now seen corresponding path program 1 times [2022-11-02 20:56:24,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:56:24,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519200005] [2022-11-02 20:56:24,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:24,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:56:24,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:24,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:56:24,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:56:24,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519200005] [2022-11-02 20:56:24,589 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519200005] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:56:24,589 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:56:24,589 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:56:24,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926205887] [2022-11-02 20:56:24,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:56:24,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:56:24,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:56:24,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:56:24,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:56:24,595 INFO L87 Difference]: Start difference. First operand 241 states and 380 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:24,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:56:24,651 INFO L93 Difference]: Finished difference Result 584 states and 947 transitions. [2022-11-02 20:56:24,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:56:24,655 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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 65 [2022-11-02 20:56:24,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:56:24,657 INFO L225 Difference]: With dead ends: 584 [2022-11-02 20:56:24,658 INFO L226 Difference]: Without dead ends: 402 [2022-11-02 20:56:24,659 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:56:24,660 INFO L413 NwaCegarLoop]: 266 mSDtfsCounter, 95 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 428 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:56:24,661 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 428 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:56:24,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2022-11-02 20:56:24,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 400. [2022-11-02 20:56:24,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 400 states, 399 states have (on average 1.6040100250626566) internal successors, (640), 399 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:24,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 640 transitions. [2022-11-02 20:56:24,696 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 640 transitions. Word has length 65 [2022-11-02 20:56:24,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:56:24,697 INFO L495 AbstractCegarLoop]: Abstraction has 400 states and 640 transitions. [2022-11-02 20:56:24,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:24,697 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 640 transitions. [2022-11-02 20:56:24,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-02 20:56:24,698 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:56:24,698 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] [2022-11-02 20:56:24,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-02 20:56:24,698 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:56:24,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:24,709 INFO L85 PathProgramCache]: Analyzing trace with hash -812427391, now seen corresponding path program 1 times [2022-11-02 20:56:24,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:56:24,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694544985] [2022-11-02 20:56:24,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:24,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:56:24,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:24,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:56:24,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:56:24,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694544985] [2022-11-02 20:56:24,812 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694544985] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:56:24,812 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:56:24,812 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:56:24,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040087784] [2022-11-02 20:56:24,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:56:24,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:56:24,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:56:24,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:56:24,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:56:24,814 INFO L87 Difference]: Start difference. First operand 400 states and 640 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:24,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:56:24,870 INFO L93 Difference]: Finished difference Result 729 states and 1183 transitions. [2022-11-02 20:56:24,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:56:24,880 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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 67 [2022-11-02 20:56:24,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:56:24,885 INFO L225 Difference]: With dead ends: 729 [2022-11-02 20:56:24,885 INFO L226 Difference]: Without dead ends: 547 [2022-11-02 20:56:24,886 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:56:24,887 INFO L413 NwaCegarLoop]: 258 mSDtfsCounter, 96 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 427 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:56:24,888 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 427 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:56:24,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 547 states. [2022-11-02 20:56:24,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 547 to 545. [2022-11-02 20:56:24,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 545 states, 544 states have (on average 1.6084558823529411) internal successors, (875), 544 states have internal predecessors, (875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:24,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 875 transitions. [2022-11-02 20:56:24,933 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 875 transitions. Word has length 67 [2022-11-02 20:56:24,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:56:24,933 INFO L495 AbstractCegarLoop]: Abstraction has 545 states and 875 transitions. [2022-11-02 20:56:24,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:24,934 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 875 transitions. [2022-11-02 20:56:24,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-02 20:56:24,934 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:56:24,935 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] [2022-11-02 20:56:24,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-02 20:56:24,935 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:56:24,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:24,936 INFO L85 PathProgramCache]: Analyzing trace with hash 221435787, now seen corresponding path program 1 times [2022-11-02 20:56:24,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:56:24,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562613273] [2022-11-02 20:56:24,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:24,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:56:24,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:25,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:56:25,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:56:25,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562613273] [2022-11-02 20:56:25,031 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562613273] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:56:25,031 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:56:25,031 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:56:25,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163732720] [2022-11-02 20:56:25,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:56:25,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:56:25,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:56:25,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:56:25,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:56:25,033 INFO L87 Difference]: Start difference. First operand 545 states and 875 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:25,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:56:25,074 INFO L93 Difference]: Finished difference Result 1434 states and 2326 transitions. [2022-11-02 20:56:25,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:56:25,075 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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 67 [2022-11-02 20:56:25,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:56:25,079 INFO L225 Difference]: With dead ends: 1434 [2022-11-02 20:56:25,079 INFO L226 Difference]: Without dead ends: 958 [2022-11-02 20:56:25,080 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:56:25,081 INFO L413 NwaCegarLoop]: 252 mSDtfsCounter, 89 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 415 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:56:25,082 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 415 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:56:25,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 958 states. [2022-11-02 20:56:25,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 958 to 956. [2022-11-02 20:56:25,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 956 states, 955 states have (on average 1.6041884816753926) internal successors, (1532), 955 states have internal predecessors, (1532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:25,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 956 states to 956 states and 1532 transitions. [2022-11-02 20:56:25,136 INFO L78 Accepts]: Start accepts. Automaton has 956 states and 1532 transitions. Word has length 67 [2022-11-02 20:56:25,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:56:25,137 INFO L495 AbstractCegarLoop]: Abstraction has 956 states and 1532 transitions. [2022-11-02 20:56:25,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:25,137 INFO L276 IsEmpty]: Start isEmpty. Operand 956 states and 1532 transitions. [2022-11-02 20:56:25,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-02 20:56:25,138 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:56:25,138 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] [2022-11-02 20:56:25,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-02 20:56:25,139 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:56:25,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:25,140 INFO L85 PathProgramCache]: Analyzing trace with hash 664156592, now seen corresponding path program 1 times [2022-11-02 20:56:25,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:56:25,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730391233] [2022-11-02 20:56:25,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:25,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:56:25,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:25,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:56:25,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:56:25,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730391233] [2022-11-02 20:56:25,196 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730391233] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:56:25,196 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:56:25,197 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:56:25,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385861115] [2022-11-02 20:56:25,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:56:25,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:56:25,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:56:25,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:56:25,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:56:25,199 INFO L87 Difference]: Start difference. First operand 956 states and 1532 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:25,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:56:25,264 INFO L93 Difference]: Finished difference Result 1783 states and 2881 transitions. [2022-11-02 20:56:25,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:56:25,265 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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 69 [2022-11-02 20:56:25,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:56:25,270 INFO L225 Difference]: With dead ends: 1783 [2022-11-02 20:56:25,270 INFO L226 Difference]: Without dead ends: 1307 [2022-11-02 20:56:25,271 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:56:25,273 INFO L413 NwaCegarLoop]: 243 mSDtfsCounter, 90 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 413 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:56:25,275 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 413 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:56:25,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1307 states. [2022-11-02 20:56:25,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1307 to 1305. [2022-11-02 20:56:25,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1305 states, 1304 states have (on average 1.5996932515337423) internal successors, (2086), 1304 states have internal predecessors, (2086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:25,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1305 states to 1305 states and 2086 transitions. [2022-11-02 20:56:25,380 INFO L78 Accepts]: Start accepts. Automaton has 1305 states and 2086 transitions. Word has length 69 [2022-11-02 20:56:25,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:56:25,381 INFO L495 AbstractCegarLoop]: Abstraction has 1305 states and 2086 transitions. [2022-11-02 20:56:25,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:25,381 INFO L276 IsEmpty]: Start isEmpty. Operand 1305 states and 2086 transitions. [2022-11-02 20:56:25,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-02 20:56:25,387 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:56:25,387 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] [2022-11-02 20:56:25,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-02 20:56:25,390 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:56:25,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:25,391 INFO L85 PathProgramCache]: Analyzing trace with hash -1757720902, now seen corresponding path program 1 times [2022-11-02 20:56:25,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:56:25,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502187969] [2022-11-02 20:56:25,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:25,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:56:25,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:25,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:56:25,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:56:25,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502187969] [2022-11-02 20:56:25,541 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502187969] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:56:25,541 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:56:25,541 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:56:25,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430796035] [2022-11-02 20:56:25,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:56:25,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:56:25,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:56:25,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:56:25,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:56:25,544 INFO L87 Difference]: Start difference. First operand 1305 states and 2086 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:25,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:56:25,963 INFO L93 Difference]: Finished difference Result 6582 states and 10723 transitions. [2022-11-02 20:56:25,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:56:25,964 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 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 69 [2022-11-02 20:56:25,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:56:25,983 INFO L225 Difference]: With dead ends: 6582 [2022-11-02 20:56:25,984 INFO L226 Difference]: Without dead ends: 5356 [2022-11-02 20:56:25,986 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:56:25,989 INFO L413 NwaCegarLoop]: 186 mSDtfsCounter, 774 mSDsluCounter, 1010 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 774 SdHoareTripleChecker+Valid, 1196 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:56:25,990 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [774 Valid, 1196 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:56:25,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5356 states. [2022-11-02 20:56:26,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5356 to 2452. [2022-11-02 20:56:26,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2452 states, 2451 states have (on average 1.5968992248062015) internal successors, (3914), 2451 states have internal predecessors, (3914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:26,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2452 states to 2452 states and 3914 transitions. [2022-11-02 20:56:26,193 INFO L78 Accepts]: Start accepts. Automaton has 2452 states and 3914 transitions. Word has length 69 [2022-11-02 20:56:26,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:56:26,193 INFO L495 AbstractCegarLoop]: Abstraction has 2452 states and 3914 transitions. [2022-11-02 20:56:26,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:26,194 INFO L276 IsEmpty]: Start isEmpty. Operand 2452 states and 3914 transitions. [2022-11-02 20:56:26,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-11-02 20:56:26,194 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:56:26,195 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] [2022-11-02 20:56:26,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-02 20:56:26,195 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:56:26,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:26,196 INFO L85 PathProgramCache]: Analyzing trace with hash -577605759, now seen corresponding path program 1 times [2022-11-02 20:56:26,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:56:26,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13549932] [2022-11-02 20:56:26,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:26,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:56:26,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:26,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:56:26,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:56:26,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13549932] [2022-11-02 20:56:26,301 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13549932] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:56:26,301 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:56:26,302 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:56:26,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020955990] [2022-11-02 20:56:26,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:56:26,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:56:26,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:56:26,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:56:26,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:56:26,305 INFO L87 Difference]: Start difference. First operand 2452 states and 3914 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:26,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:56:26,723 INFO L93 Difference]: Finished difference Result 7943 states and 12835 transitions. [2022-11-02 20:56:26,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:56:26,724 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 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 70 [2022-11-02 20:56:26,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:56:26,745 INFO L225 Difference]: With dead ends: 7943 [2022-11-02 20:56:26,745 INFO L226 Difference]: Without dead ends: 5570 [2022-11-02 20:56:26,751 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:56:26,752 INFO L413 NwaCegarLoop]: 187 mSDtfsCounter, 338 mSDsluCounter, 439 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 338 SdHoareTripleChecker+Valid, 626 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:56:26,753 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [338 Valid, 626 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:56:26,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5570 states. [2022-11-02 20:56:27,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5570 to 3992. [2022-11-02 20:56:27,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3992 states, 3991 states have (on average 1.5995990979704335) internal successors, (6384), 3991 states have internal predecessors, (6384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:27,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3992 states to 3992 states and 6384 transitions. [2022-11-02 20:56:27,070 INFO L78 Accepts]: Start accepts. Automaton has 3992 states and 6384 transitions. Word has length 70 [2022-11-02 20:56:27,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:56:27,071 INFO L495 AbstractCegarLoop]: Abstraction has 3992 states and 6384 transitions. [2022-11-02 20:56:27,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:27,071 INFO L276 IsEmpty]: Start isEmpty. Operand 3992 states and 6384 transitions. [2022-11-02 20:56:27,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-02 20:56:27,072 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:56:27,072 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] [2022-11-02 20:56:27,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-02 20:56:27,073 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:56:27,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:27,074 INFO L85 PathProgramCache]: Analyzing trace with hash 1815229649, now seen corresponding path program 1 times [2022-11-02 20:56:27,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:56:27,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757507928] [2022-11-02 20:56:27,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:27,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:56:27,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:27,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:56:27,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:56:27,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757507928] [2022-11-02 20:56:27,150 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757507928] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:56:27,151 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:56:27,151 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:56:27,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469353134] [2022-11-02 20:56:27,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:56:27,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:56:27,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:56:27,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:56:27,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:56:27,153 INFO L87 Difference]: Start difference. First operand 3992 states and 6384 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:27,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:56:27,785 INFO L93 Difference]: Finished difference Result 12755 states and 20495 transitions. [2022-11-02 20:56:27,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:56:27,786 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 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 71 [2022-11-02 20:56:27,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:56:27,855 INFO L225 Difference]: With dead ends: 12755 [2022-11-02 20:56:27,855 INFO L226 Difference]: Without dead ends: 8842 [2022-11-02 20:56:27,860 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:56:27,861 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 336 mSDsluCounter, 441 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 336 SdHoareTripleChecker+Valid, 623 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:56:27,862 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [336 Valid, 623 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:56:27,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8842 states. [2022-11-02 20:56:28,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8842 to 6388. [2022-11-02 20:56:28,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6388 states, 6387 states have (on average 1.5913574448097698) internal successors, (10164), 6387 states have internal predecessors, (10164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:28,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6388 states to 6388 states and 10164 transitions. [2022-11-02 20:56:28,473 INFO L78 Accepts]: Start accepts. Automaton has 6388 states and 10164 transitions. Word has length 71 [2022-11-02 20:56:28,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:56:28,473 INFO L495 AbstractCegarLoop]: Abstraction has 6388 states and 10164 transitions. [2022-11-02 20:56:28,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:28,475 INFO L276 IsEmpty]: Start isEmpty. Operand 6388 states and 10164 transitions. [2022-11-02 20:56:28,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-11-02 20:56:28,475 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:56:28,476 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] [2022-11-02 20:56:28,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-02 20:56:28,476 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:56:28,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:28,477 INFO L85 PathProgramCache]: Analyzing trace with hash -1147279688, now seen corresponding path program 1 times [2022-11-02 20:56:28,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:56:28,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104345343] [2022-11-02 20:56:28,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:28,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:56:28,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:28,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:56:28,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:56:28,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104345343] [2022-11-02 20:56:28,594 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104345343] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:56:28,594 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:56:28,594 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:56:28,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992846231] [2022-11-02 20:56:28,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:56:28,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:56:28,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:56:28,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:56:28,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:56:28,596 INFO L87 Difference]: Start difference. First operand 6388 states and 10164 transitions. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:29,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:56:29,467 INFO L93 Difference]: Finished difference Result 20047 states and 32019 transitions. [2022-11-02 20:56:29,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:56:29,468 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 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 72 [2022-11-02 20:56:29,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:56:29,511 INFO L225 Difference]: With dead ends: 20047 [2022-11-02 20:56:29,511 INFO L226 Difference]: Without dead ends: 13738 [2022-11-02 20:56:29,519 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:56:29,520 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 334 mSDsluCounter, 443 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 334 SdHoareTripleChecker+Valid, 625 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:56:29,521 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [334 Valid, 625 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:56:29,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13738 states. [2022-11-02 20:56:30,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13738 to 10020. [2022-11-02 20:56:30,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10020 states, 10019 states have (on average 1.582593073160994) internal successors, (15856), 10019 states have internal predecessors, (15856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:30,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10020 states to 10020 states and 15856 transitions. [2022-11-02 20:56:30,554 INFO L78 Accepts]: Start accepts. Automaton has 10020 states and 15856 transitions. Word has length 72 [2022-11-02 20:56:30,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:56:30,555 INFO L495 AbstractCegarLoop]: Abstraction has 10020 states and 15856 transitions. [2022-11-02 20:56:30,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:30,556 INFO L276 IsEmpty]: Start isEmpty. Operand 10020 states and 15856 transitions. [2022-11-02 20:56:30,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-02 20:56:30,557 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:56:30,557 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] [2022-11-02 20:56:30,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-02 20:56:30,558 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:56:30,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:30,558 INFO L85 PathProgramCache]: Analyzing trace with hash -856706640, now seen corresponding path program 1 times [2022-11-02 20:56:30,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:56:30,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730703865] [2022-11-02 20:56:30,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:30,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:56:30,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:30,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:56:30,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:56:30,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730703865] [2022-11-02 20:56:30,790 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730703865] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:56:30,790 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:56:30,790 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:56:30,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367427550] [2022-11-02 20:56:30,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:56:30,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:56:30,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:56:30,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:56:30,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:56:30,792 INFO L87 Difference]: Start difference. First operand 10020 states and 15856 transitions. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:31,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:56:31,518 INFO L93 Difference]: Finished difference Result 19963 states and 31608 transitions. [2022-11-02 20:56:31,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:56:31,519 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 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 74 [2022-11-02 20:56:31,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:56:31,541 INFO L225 Difference]: With dead ends: 19963 [2022-11-02 20:56:31,541 INFO L226 Difference]: Without dead ends: 10022 [2022-11-02 20:56:31,552 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:56:31,552 INFO L413 NwaCegarLoop]: 188 mSDtfsCounter, 159 mSDsluCounter, 489 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 677 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:56:31,553 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 677 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:56:31,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10022 states. [2022-11-02 20:56:32,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10022 to 10020. [2022-11-02 20:56:32,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10020 states, 10019 states have (on average 1.570116778121569) internal successors, (15731), 10019 states have internal predecessors, (15731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:32,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10020 states to 10020 states and 15731 transitions. [2022-11-02 20:56:32,308 INFO L78 Accepts]: Start accepts. Automaton has 10020 states and 15731 transitions. Word has length 74 [2022-11-02 20:56:32,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:56:32,308 INFO L495 AbstractCegarLoop]: Abstraction has 10020 states and 15731 transitions. [2022-11-02 20:56:32,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:32,308 INFO L276 IsEmpty]: Start isEmpty. Operand 10020 states and 15731 transitions. [2022-11-02 20:56:32,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-02 20:56:32,309 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:56:32,309 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] [2022-11-02 20:56:32,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-02 20:56:32,310 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:56:32,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:32,310 INFO L85 PathProgramCache]: Analyzing trace with hash 251102324, now seen corresponding path program 1 times [2022-11-02 20:56:32,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:56:32,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60497492] [2022-11-02 20:56:32,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:32,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:56:32,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:32,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:56:32,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:56:32,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60497492] [2022-11-02 20:56:32,507 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60497492] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:56:32,507 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:56:32,507 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:56:32,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267409261] [2022-11-02 20:56:32,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:56:32,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:56:32,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:56:32,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:56:32,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:56:32,510 INFO L87 Difference]: Start difference. First operand 10020 states and 15731 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:33,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:56:33,989 INFO L93 Difference]: Finished difference Result 28689 states and 45194 transitions. [2022-11-02 20:56:33,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:56:33,990 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 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 77 [2022-11-02 20:56:33,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:56:34,050 INFO L225 Difference]: With dead ends: 28689 [2022-11-02 20:56:34,051 INFO L226 Difference]: Without dead ends: 18748 [2022-11-02 20:56:34,068 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:56:34,068 INFO L413 NwaCegarLoop]: 183 mSDtfsCounter, 243 mSDsluCounter, 336 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 519 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:56:34,069 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [243 Valid, 519 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:56:34,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18748 states. [2022-11-02 20:56:35,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18748 to 18746. [2022-11-02 20:56:35,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18746 states, 18745 states have (on average 1.5565750866897838) internal successors, (29178), 18745 states have internal predecessors, (29178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:35,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18746 states to 18746 states and 29178 transitions. [2022-11-02 20:56:35,387 INFO L78 Accepts]: Start accepts. Automaton has 18746 states and 29178 transitions. Word has length 77 [2022-11-02 20:56:35,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:56:35,387 INFO L495 AbstractCegarLoop]: Abstraction has 18746 states and 29178 transitions. [2022-11-02 20:56:35,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:35,388 INFO L276 IsEmpty]: Start isEmpty. Operand 18746 states and 29178 transitions. [2022-11-02 20:56:35,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-11-02 20:56:35,389 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:56:35,389 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] [2022-11-02 20:56:35,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-02 20:56:35,389 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:56:35,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:35,390 INFO L85 PathProgramCache]: Analyzing trace with hash -1234338215, now seen corresponding path program 1 times [2022-11-02 20:56:35,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:56:35,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992082369] [2022-11-02 20:56:35,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:35,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:56:35,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:35,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:56:35,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:56:35,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992082369] [2022-11-02 20:56:35,722 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992082369] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:56:35,722 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:56:35,722 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 20:56:35,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198034815] [2022-11-02 20:56:35,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:56:35,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 20:56:35,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:56:35,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 20:56:35,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:56:35,724 INFO L87 Difference]: Start difference. First operand 18746 states and 29178 transitions. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:38,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:56:38,408 INFO L93 Difference]: Finished difference Result 36838 states and 56661 transitions. [2022-11-02 20:56:38,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 20:56:38,409 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 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 78 [2022-11-02 20:56:38,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:56:38,590 INFO L225 Difference]: With dead ends: 36838 [2022-11-02 20:56:38,591 INFO L226 Difference]: Without dead ends: 36836 [2022-11-02 20:56:38,600 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2022-11-02 20:56:38,603 INFO L413 NwaCegarLoop]: 245 mSDtfsCounter, 664 mSDsluCounter, 949 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 664 SdHoareTripleChecker+Valid, 1194 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:56:38,604 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [664 Valid, 1194 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:56:38,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36836 states. [2022-11-02 20:56:40,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36836 to 19832. [2022-11-02 20:56:40,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19832 states, 19831 states have (on average 1.5256416721294943) internal successors, (30255), 19831 states have internal predecessors, (30255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:40,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19832 states to 19832 states and 30255 transitions. [2022-11-02 20:56:40,472 INFO L78 Accepts]: Start accepts. Automaton has 19832 states and 30255 transitions. Word has length 78 [2022-11-02 20:56:40,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:56:40,472 INFO L495 AbstractCegarLoop]: Abstraction has 19832 states and 30255 transitions. [2022-11-02 20:56:40,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:40,473 INFO L276 IsEmpty]: Start isEmpty. Operand 19832 states and 30255 transitions. [2022-11-02 20:56:40,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-11-02 20:56:40,475 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:56:40,476 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:56:40,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-02 20:56:40,476 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:56:40,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:40,477 INFO L85 PathProgramCache]: Analyzing trace with hash -1630330772, now seen corresponding path program 1 times [2022-11-02 20:56:40,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:56:40,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135353176] [2022-11-02 20:56:40,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:40,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:56:40,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:40,621 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 20:56:40,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:56:40,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135353176] [2022-11-02 20:56:40,624 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135353176] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:56:40,625 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:56:40,625 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:56:40,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128861120] [2022-11-02 20:56:40,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:56:40,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:56:40,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:56:40,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:56:40,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:56:40,627 INFO L87 Difference]: Start difference. First operand 19832 states and 30255 transitions. Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:43,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:56:43,055 INFO L93 Difference]: Finished difference Result 48790 states and 74781 transitions. [2022-11-02 20:56:43,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:56:43,056 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 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 103 [2022-11-02 20:56:43,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:56:43,137 INFO L225 Difference]: With dead ends: 48790 [2022-11-02 20:56:43,138 INFO L226 Difference]: Without dead ends: 39128 [2022-11-02 20:56:43,153 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:56:43,153 INFO L413 NwaCegarLoop]: 290 mSDtfsCounter, 415 mSDsluCounter, 542 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 415 SdHoareTripleChecker+Valid, 832 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:56:43,154 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [415 Valid, 832 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:56:43,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39128 states. [2022-11-02 20:56:45,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39128 to 30524. [2022-11-02 20:56:45,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30524 states, 30523 states have (on average 1.523539625855912) internal successors, (46503), 30523 states have internal predecessors, (46503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:45,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30524 states to 30524 states and 46503 transitions. [2022-11-02 20:56:45,816 INFO L78 Accepts]: Start accepts. Automaton has 30524 states and 46503 transitions. Word has length 103 [2022-11-02 20:56:45,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:56:45,816 INFO L495 AbstractCegarLoop]: Abstraction has 30524 states and 46503 transitions. [2022-11-02 20:56:45,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:45,817 INFO L276 IsEmpty]: Start isEmpty. Operand 30524 states and 46503 transitions. [2022-11-02 20:56:45,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-11-02 20:56:45,821 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:56:45,821 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:56:45,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-02 20:56:45,822 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:56:45,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:45,822 INFO L85 PathProgramCache]: Analyzing trace with hash -743960700, now seen corresponding path program 1 times [2022-11-02 20:56:45,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:56:45,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264654898] [2022-11-02 20:56:45,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:45,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:56:45,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:46,023 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-02 20:56:46,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:56:46,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264654898] [2022-11-02 20:56:46,024 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264654898] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:56:46,024 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:56:46,024 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:56:46,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028894762] [2022-11-02 20:56:46,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:56:46,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:56:46,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:56:46,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:56:46,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:56:46,026 INFO L87 Difference]: Start difference. First operand 30524 states and 46503 transitions. Second operand has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:48,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:56:48,865 INFO L93 Difference]: Finished difference Result 54722 states and 83891 transitions. [2022-11-02 20:56:48,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:56:48,868 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 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 103 [2022-11-02 20:56:48,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:56:48,955 INFO L225 Difference]: With dead ends: 54722 [2022-11-02 20:56:48,955 INFO L226 Difference]: Without dead ends: 45320 [2022-11-02 20:56:48,975 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:56:48,977 INFO L413 NwaCegarLoop]: 297 mSDtfsCounter, 421 mSDsluCounter, 519 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 421 SdHoareTripleChecker+Valid, 816 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:56:48,977 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [421 Valid, 816 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:56:49,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45320 states. [2022-11-02 20:56:52,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45320 to 41442. [2022-11-02 20:56:52,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41442 states, 41441 states have (on average 1.525662990757945) internal successors, (63225), 41441 states have internal predecessors, (63225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:52,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41442 states to 41442 states and 63225 transitions. [2022-11-02 20:56:52,565 INFO L78 Accepts]: Start accepts. Automaton has 41442 states and 63225 transitions. Word has length 103 [2022-11-02 20:56:52,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:56:52,565 INFO L495 AbstractCegarLoop]: Abstraction has 41442 states and 63225 transitions. [2022-11-02 20:56:52,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:52,566 INFO L276 IsEmpty]: Start isEmpty. Operand 41442 states and 63225 transitions. [2022-11-02 20:56:52,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-11-02 20:56:52,573 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:56:52,573 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:56:52,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-02 20:56:52,573 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:56:52,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:52,574 INFO L85 PathProgramCache]: Analyzing trace with hash 910392184, now seen corresponding path program 1 times [2022-11-02 20:56:52,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:56:52,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544995289] [2022-11-02 20:56:52,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:52,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:56:52,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:52,730 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-02 20:56:52,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:56:52,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544995289] [2022-11-02 20:56:52,730 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544995289] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:56:52,731 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:56:52,731 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:56:52,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286878441] [2022-11-02 20:56:52,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:56:52,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:56:52,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:56:52,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:56:52,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:56:52,733 INFO L87 Difference]: Start difference. First operand 41442 states and 63225 transitions. Second operand has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:56,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:56:56,495 INFO L93 Difference]: Finished difference Result 58490 states and 89675 transitions. [2022-11-02 20:56:56,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:56:56,495 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 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 103 [2022-11-02 20:56:56,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:56:56,555 INFO L225 Difference]: With dead ends: 58490 [2022-11-02 20:56:56,555 INFO L226 Difference]: Without dead ends: 49088 [2022-11-02 20:56:56,567 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:56:56,568 INFO L413 NwaCegarLoop]: 298 mSDtfsCounter, 422 mSDsluCounter, 543 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 422 SdHoareTripleChecker+Valid, 841 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:56:56,568 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [422 Valid, 841 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:56:56,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49088 states. [2022-11-02 20:56:59,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49088 to 47530. [2022-11-02 20:56:59,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47530 states, 47529 states have (on average 1.527846157083044) internal successors, (72617), 47529 states have internal predecessors, (72617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:59,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47530 states to 47530 states and 72617 transitions. [2022-11-02 20:56:59,546 INFO L78 Accepts]: Start accepts. Automaton has 47530 states and 72617 transitions. Word has length 103 [2022-11-02 20:56:59,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:56:59,547 INFO L495 AbstractCegarLoop]: Abstraction has 47530 states and 72617 transitions. [2022-11-02 20:56:59,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:59,547 INFO L276 IsEmpty]: Start isEmpty. Operand 47530 states and 72617 transitions. [2022-11-02 20:56:59,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-11-02 20:56:59,551 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:56:59,551 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:56:59,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-02 20:56:59,552 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:56:59,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:59,553 INFO L85 PathProgramCache]: Analyzing trace with hash -923479025, now seen corresponding path program 1 times [2022-11-02 20:56:59,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:56:59,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686562185] [2022-11-02 20:56:59,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:59,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:56:59,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:59,691 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 20:56:59,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:56:59,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686562185] [2022-11-02 20:56:59,692 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686562185] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:56:59,692 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:56:59,692 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:56:59,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744700222] [2022-11-02 20:56:59,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:56:59,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:56:59,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:56:59,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:56:59,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:56:59,694 INFO L87 Difference]: Start difference. First operand 47530 states and 72617 transitions. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:57:03,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:57:03,654 INFO L93 Difference]: Finished difference Result 77643 states and 119316 transitions. [2022-11-02 20:57:03,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:57:03,655 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 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 104 [2022-11-02 20:57:03,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:57:03,839 INFO L225 Difference]: With dead ends: 77643 [2022-11-02 20:57:03,839 INFO L226 Difference]: Without dead ends: 61789 [2022-11-02 20:57:03,852 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:57:03,853 INFO L413 NwaCegarLoop]: 288 mSDtfsCounter, 179 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 642 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:57:03,853 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 642 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:57:03,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61789 states. [2022-11-02 20:57:07,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61789 to 60233. [2022-11-02 20:57:07,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60233 states, 60232 states have (on average 1.528240802231372) internal successors, (92049), 60232 states have internal predecessors, (92049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:57:07,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60233 states to 60233 states and 92049 transitions. [2022-11-02 20:57:07,998 INFO L78 Accepts]: Start accepts. Automaton has 60233 states and 92049 transitions. Word has length 104 [2022-11-02 20:57:07,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:57:07,998 INFO L495 AbstractCegarLoop]: Abstraction has 60233 states and 92049 transitions. [2022-11-02 20:57:07,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:57:07,999 INFO L276 IsEmpty]: Start isEmpty. Operand 60233 states and 92049 transitions. [2022-11-02 20:57:08,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-11-02 20:57:08,002 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:57:08,002 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:57:08,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-02 20:57:08,003 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:57:08,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:57:08,003 INFO L85 PathProgramCache]: Analyzing trace with hash 1887965934, now seen corresponding path program 1 times [2022-11-02 20:57:08,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:57:08,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166959879] [2022-11-02 20:57:08,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:57:08,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:57:08,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:57:08,372 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-02 20:57:08,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:57:08,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166959879] [2022-11-02 20:57:08,373 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166959879] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:57:08,373 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:57:08,373 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:57:08,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353920743] [2022-11-02 20:57:08,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:57:08,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:57:08,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:57:08,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:57:08,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:57:08,375 INFO L87 Difference]: Start difference. First operand 60233 states and 92049 transitions. Second operand has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 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)