./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem17_label12.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f719fe1a-3284-42a5-b3b5-313ecd427779/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f719fe1a-3284-42a5-b3b5-313ecd427779/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_f719fe1a-3284-42a5-b3b5-313ecd427779/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f719fe1a-3284-42a5-b3b5-313ecd427779/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem17_label12.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f719fe1a-3284-42a5-b3b5-313ecd427779/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_f719fe1a-3284-42a5-b3b5-313ecd427779/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 6527eed8ae625274c5a4f237cc1c724f312a2d824fa69cbfc4381a7c8bc46d7c --- 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 20:46:08,474 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:46:08,476 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:46:08,501 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:46:08,502 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:46:08,503 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:46:08,505 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:46:08,506 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:46:08,508 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:46:08,509 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:46:08,510 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:46:08,511 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:46:08,512 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:46:08,513 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:46:08,514 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:46:08,515 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:46:08,516 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:46:08,517 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:46:08,519 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:46:08,521 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:46:08,522 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:46:08,524 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:46:08,525 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:46:08,526 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:46:08,530 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:46:08,530 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:46:08,531 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:46:08,532 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:46:08,533 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:46:08,534 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:46:08,534 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:46:08,535 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:46:08,536 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:46:08,537 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:46:08,538 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:46:08,538 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:46:08,539 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:46:08,540 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:46:08,540 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:46:08,541 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:46:08,542 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:46:08,549 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f719fe1a-3284-42a5-b3b5-313ecd427779/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-02 20:46:08,576 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:46:08,579 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:46:08,580 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:46:08,580 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:46:08,581 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:46:08,581 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:46:08,582 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:46:08,582 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:46:08,583 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:46:08,583 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:46:08,584 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 20:46:08,584 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:46:08,585 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 20:46:08,585 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:46:08,585 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:46:08,585 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:46:08,586 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:46:08,586 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 20:46:08,586 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:46:08,586 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:46:08,587 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:46:08,587 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:46:08,587 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:46:08,588 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:46:08,588 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:46:08,588 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:46:08,588 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:46:08,589 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:46:08,589 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:46:08,589 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:46:08,590 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:46:08,590 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:46:08,590 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:46:08,591 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_f719fe1a-3284-42a5-b3b5-313ecd427779/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f719fe1a-3284-42a5-b3b5-313ecd427779/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6527eed8ae625274c5a4f237cc1c724f312a2d824fa69cbfc4381a7c8bc46d7c [2022-11-02 20:46:08,937 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:46:08,966 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:46:08,969 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:46:08,970 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:46:08,971 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:46:08,973 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f719fe1a-3284-42a5-b3b5-313ecd427779/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/eca-rers2012/Problem17_label12.c [2022-11-02 20:46:09,048 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f719fe1a-3284-42a5-b3b5-313ecd427779/bin/uautomizer-Dbtcem3rbc/data/634d2215e/1e0304f6b12e453989099bae13a9ae0a/FLAG438f0f643 [2022-11-02 20:46:09,781 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:46:09,782 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f719fe1a-3284-42a5-b3b5-313ecd427779/sv-benchmarks/c/eca-rers2012/Problem17_label12.c [2022-11-02 20:46:09,806 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f719fe1a-3284-42a5-b3b5-313ecd427779/bin/uautomizer-Dbtcem3rbc/data/634d2215e/1e0304f6b12e453989099bae13a9ae0a/FLAG438f0f643 [2022-11-02 20:46:09,903 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f719fe1a-3284-42a5-b3b5-313ecd427779/bin/uautomizer-Dbtcem3rbc/data/634d2215e/1e0304f6b12e453989099bae13a9ae0a [2022-11-02 20:46:09,905 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:46:09,907 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:46:09,912 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:46:09,912 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:46:09,916 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:46:09,917 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:46:09" (1/1) ... [2022-11-02 20:46:09,918 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39386423 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:46:09, skipping insertion in model container [2022-11-02 20:46:09,918 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:46:09" (1/1) ... [2022-11-02 20:46:09,926 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:46:10,029 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:46:10,330 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_f719fe1a-3284-42a5-b3b5-313ecd427779/sv-benchmarks/c/eca-rers2012/Problem17_label12.c[5027,5040] [2022-11-02 20:46:11,028 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:46:11,036 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:46:11,055 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_f719fe1a-3284-42a5-b3b5-313ecd427779/sv-benchmarks/c/eca-rers2012/Problem17_label12.c[5027,5040] [2022-11-02 20:46:11,569 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:46:11,587 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:46:11,587 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:46:11 WrapperNode [2022-11-02 20:46:11,587 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:46:11,589 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:46:11,589 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:46:11,589 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:46:11,597 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:46:11" (1/1) ... [2022-11-02 20:46:11,657 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:46:11" (1/1) ... [2022-11-02 20:46:11,921 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 2611 [2022-11-02 20:46:11,921 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:46:11,922 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:46:11,922 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:46:11,922 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:46:11,931 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:46:11" (1/1) ... [2022-11-02 20:46:11,931 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:46:11" (1/1) ... [2022-11-02 20:46:12,050 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:46:11" (1/1) ... [2022-11-02 20:46:12,051 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:46:11" (1/1) ... [2022-11-02 20:46:12,220 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:46:11" (1/1) ... [2022-11-02 20:46:12,270 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:46:11" (1/1) ... [2022-11-02 20:46:12,327 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:46:11" (1/1) ... [2022-11-02 20:46:12,346 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:46:11" (1/1) ... [2022-11-02 20:46:12,435 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:46:12,437 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:46:12,437 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:46:12,438 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:46:12,451 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:46:11" (1/1) ... [2022-11-02 20:46:12,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:46:12,487 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f719fe1a-3284-42a5-b3b5-313ecd427779/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:46:12,528 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f719fe1a-3284-42a5-b3b5-313ecd427779/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:46:12,584 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f719fe1a-3284-42a5-b3b5-313ecd427779/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:46:12,617 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:46:12,617 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 20:46:12,617 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:46:12,617 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:46:12,697 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:46:12,698 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:46:16,969 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:46:16,988 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:46:16,988 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-02 20:46:16,991 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:46:16 BoogieIcfgContainer [2022-11-02 20:46:16,992 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:46:16,994 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:46:16,995 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:46:16,998 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:46:16,998 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:46:09" (1/3) ... [2022-11-02 20:46:16,999 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3987cab0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:46:16, skipping insertion in model container [2022-11-02 20:46:16,999 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:46:11" (2/3) ... [2022-11-02 20:46:17,000 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3987cab0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:46:16, skipping insertion in model container [2022-11-02 20:46:17,000 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:46:16" (3/3) ... [2022-11-02 20:46:17,001 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label12.c [2022-11-02 20:46:17,020 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:46:17,020 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 20:46:17,110 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:46:17,119 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;@7df59763, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:46:17,119 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 20:46:17,128 INFO L276 IsEmpty]: Start isEmpty. Operand has 590 states, 588 states have (on average 1.8061224489795917) internal successors, (1062), 589 states have internal predecessors, (1062), 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 20:46:17,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-11-02 20:46:17,135 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:46:17,136 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] [2022-11-02 20:46:17,137 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:46:17,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:46:17,142 INFO L85 PathProgramCache]: Analyzing trace with hash 2113343065, now seen corresponding path program 1 times [2022-11-02 20:46:17,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:46:17,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87860090] [2022-11-02 20:46:17,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:46:17,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:46:17,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:46:17,518 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 20:46:17,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:46:17,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87860090] [2022-11-02 20:46:17,520 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87860090] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:46:17,520 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:46:17,521 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:46:17,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322720353] [2022-11-02 20:46:17,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:46:17,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:46:17,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:46:17,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:46:17,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:46:17,574 INFO L87 Difference]: Start difference. First operand has 590 states, 588 states have (on average 1.8061224489795917) internal successors, (1062), 589 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 2 states have internal predecessors, (33), 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 20:46:21,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:46:21,180 INFO L93 Difference]: Finished difference Result 1642 states and 3024 transitions. [2022-11-02 20:46:21,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:46:21,182 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 2 states have internal predecessors, (33), 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 33 [2022-11-02 20:46:21,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:46:21,199 INFO L225 Difference]: With dead ends: 1642 [2022-11-02 20:46:21,199 INFO L226 Difference]: Without dead ends: 975 [2022-11-02 20:46:21,204 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:46:21,207 INFO L413 NwaCegarLoop]: 474 mSDtfsCounter, 457 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 1413 mSolverCounterSat, 372 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 457 SdHoareTripleChecker+Valid, 550 SdHoareTripleChecker+Invalid, 1785 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 372 IncrementalHoareTripleChecker+Valid, 1413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-11-02 20:46:21,208 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [457 Valid, 550 Invalid, 1785 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [372 Valid, 1413 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-11-02 20:46:21,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 975 states. [2022-11-02 20:46:21,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 975 to 972. [2022-11-02 20:46:21,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 972 states, 971 states have (on average 1.5077239958805355) internal successors, (1464), 971 states have internal predecessors, (1464), 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 20:46:21,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 972 states to 972 states and 1464 transitions. [2022-11-02 20:46:21,282 INFO L78 Accepts]: Start accepts. Automaton has 972 states and 1464 transitions. Word has length 33 [2022-11-02 20:46:21,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:46:21,283 INFO L495 AbstractCegarLoop]: Abstraction has 972 states and 1464 transitions. [2022-11-02 20:46:21,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 2 states have internal predecessors, (33), 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 20:46:21,283 INFO L276 IsEmpty]: Start isEmpty. Operand 972 states and 1464 transitions. [2022-11-02 20:46:21,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-11-02 20:46:21,286 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:46:21,286 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:46:21,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:46:21,287 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:46:21,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:46:21,287 INFO L85 PathProgramCache]: Analyzing trace with hash 435284012, now seen corresponding path program 1 times [2022-11-02 20:46:21,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:46:21,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681071319] [2022-11-02 20:46:21,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:46:21,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:46:21,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:46:21,603 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:46:21,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:46:21,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681071319] [2022-11-02 20:46:21,603 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681071319] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:46:21,604 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:46:21,604 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:46:21,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943479092] [2022-11-02 20:46:21,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:46:21,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:46:21,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:46:21,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:46:21,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:46:21,606 INFO L87 Difference]: Start difference. First operand 972 states and 1464 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 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 20:46:24,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:46:24,741 INFO L93 Difference]: Finished difference Result 2814 states and 4242 transitions. [2022-11-02 20:46:24,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:46:24,742 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 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 103 [2022-11-02 20:46:24,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:46:24,749 INFO L225 Difference]: With dead ends: 2814 [2022-11-02 20:46:24,749 INFO L226 Difference]: Without dead ends: 1844 [2022-11-02 20:46:24,751 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 20:46:24,755 INFO L413 NwaCegarLoop]: 853 mSDtfsCounter, 458 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 1283 mSolverCounterSat, 414 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 458 SdHoareTripleChecker+Valid, 921 SdHoareTripleChecker+Invalid, 1697 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 414 IncrementalHoareTripleChecker+Valid, 1283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:46:24,756 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [458 Valid, 921 Invalid, 1697 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [414 Valid, 1283 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-11-02 20:46:24,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1844 states. [2022-11-02 20:46:24,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1844 to 1842. [2022-11-02 20:46:24,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1842 states, 1841 states have (on average 1.3601303639326452) internal successors, (2504), 1841 states have internal predecessors, (2504), 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 20:46:24,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1842 states to 1842 states and 2504 transitions. [2022-11-02 20:46:24,823 INFO L78 Accepts]: Start accepts. Automaton has 1842 states and 2504 transitions. Word has length 103 [2022-11-02 20:46:24,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:46:24,828 INFO L495 AbstractCegarLoop]: Abstraction has 1842 states and 2504 transitions. [2022-11-02 20:46:24,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 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 20:46:24,829 INFO L276 IsEmpty]: Start isEmpty. Operand 1842 states and 2504 transitions. [2022-11-02 20:46:24,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-11-02 20:46:24,840 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:46:24,841 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:46:24,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 20:46:24,842 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:46:24,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:46:24,848 INFO L85 PathProgramCache]: Analyzing trace with hash 1392867689, now seen corresponding path program 1 times [2022-11-02 20:46:24,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:46:24,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027943949] [2022-11-02 20:46:24,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:46:24,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:46:24,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:46:25,094 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:46:25,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:46:25,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027943949] [2022-11-02 20:46:25,095 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027943949] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:46:25,096 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:46:25,096 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:46:25,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698280200] [2022-11-02 20:46:25,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:46:25,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:46:25,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:46:25,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:46:25,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:46:25,098 INFO L87 Difference]: Start difference. First operand 1842 states and 2504 transitions. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 2 states have internal predecessors, (125), 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 20:46:27,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:46:27,812 INFO L93 Difference]: Finished difference Result 5395 states and 7326 transitions. [2022-11-02 20:46:27,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:46:27,812 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 2 states have internal predecessors, (125), 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 125 [2022-11-02 20:46:27,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:46:27,820 INFO L225 Difference]: With dead ends: 5395 [2022-11-02 20:46:27,821 INFO L226 Difference]: Without dead ends: 2701 [2022-11-02 20:46:27,824 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:46:27,831 INFO L413 NwaCegarLoop]: 516 mSDtfsCounter, 368 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 1081 mSolverCounterSat, 548 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 368 SdHoareTripleChecker+Valid, 591 SdHoareTripleChecker+Invalid, 1629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 548 IncrementalHoareTripleChecker+Valid, 1081 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-02 20:46:27,832 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [368 Valid, 591 Invalid, 1629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [548 Valid, 1081 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-11-02 20:46:27,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2701 states. [2022-11-02 20:46:27,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2701 to 2701. [2022-11-02 20:46:27,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2701 states, 2700 states have (on average 1.191851851851852) internal successors, (3218), 2700 states have internal predecessors, (3218), 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 20:46:27,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2701 states to 2701 states and 3218 transitions. [2022-11-02 20:46:27,886 INFO L78 Accepts]: Start accepts. Automaton has 2701 states and 3218 transitions. Word has length 125 [2022-11-02 20:46:27,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:46:27,888 INFO L495 AbstractCegarLoop]: Abstraction has 2701 states and 3218 transitions. [2022-11-02 20:46:27,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 2 states have internal predecessors, (125), 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 20:46:27,888 INFO L276 IsEmpty]: Start isEmpty. Operand 2701 states and 3218 transitions. [2022-11-02 20:46:27,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2022-11-02 20:46:27,896 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:46:27,896 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:46:27,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 20:46:27,897 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:46:27,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:46:27,900 INFO L85 PathProgramCache]: Analyzing trace with hash -165152522, now seen corresponding path program 1 times [2022-11-02 20:46:27,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:46:27,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973409298] [2022-11-02 20:46:27,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:46:27,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:46:27,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:46:28,260 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 129 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:46:28,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:46:28,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973409298] [2022-11-02 20:46:28,261 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973409298] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:46:28,261 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:46:28,261 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:46:28,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733929795] [2022-11-02 20:46:28,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:46:28,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:46:28,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:46:28,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:46:28,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:46:28,265 INFO L87 Difference]: Start difference. First operand 2701 states and 3218 transitions. Second operand has 3 states, 3 states have (on average 61.666666666666664) internal successors, (185), 3 states have internal predecessors, (185), 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 20:46:30,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:46:30,455 INFO L93 Difference]: Finished difference Result 7108 states and 8598 transitions. [2022-11-02 20:46:30,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:46:30,456 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 61.666666666666664) internal successors, (185), 3 states have internal predecessors, (185), 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 185 [2022-11-02 20:46:30,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:46:30,470 INFO L225 Difference]: With dead ends: 7108 [2022-11-02 20:46:30,470 INFO L226 Difference]: Without dead ends: 4409 [2022-11-02 20:46:30,474 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 20:46:30,475 INFO L413 NwaCegarLoop]: 726 mSDtfsCounter, 496 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 1136 mSolverCounterSat, 306 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 784 SdHoareTripleChecker+Invalid, 1442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 306 IncrementalHoareTripleChecker+Valid, 1136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:46:30,476 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [496 Valid, 784 Invalid, 1442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [306 Valid, 1136 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-02 20:46:30,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4409 states. [2022-11-02 20:46:30,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4409 to 4409. [2022-11-02 20:46:30,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4409 states, 4408 states have (on average 1.1705989110707804) internal successors, (5160), 4408 states have internal predecessors, (5160), 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 20:46:30,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4409 states to 4409 states and 5160 transitions. [2022-11-02 20:46:30,554 INFO L78 Accepts]: Start accepts. Automaton has 4409 states and 5160 transitions. Word has length 185 [2022-11-02 20:46:30,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:46:30,555 INFO L495 AbstractCegarLoop]: Abstraction has 4409 states and 5160 transitions. [2022-11-02 20:46:30,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.666666666666664) internal successors, (185), 3 states have internal predecessors, (185), 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 20:46:30,555 INFO L276 IsEmpty]: Start isEmpty. Operand 4409 states and 5160 transitions. [2022-11-02 20:46:30,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2022-11-02 20:46:30,558 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:46:30,558 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:46:30,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-02 20:46:30,558 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:46:30,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:46:30,559 INFO L85 PathProgramCache]: Analyzing trace with hash -271732261, now seen corresponding path program 1 times [2022-11-02 20:46:30,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:46:30,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885821603] [2022-11-02 20:46:30,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:46:30,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:46:30,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:46:30,752 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-11-02 20:46:30,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:46:30,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885821603] [2022-11-02 20:46:30,753 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885821603] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:46:30,753 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:46:30,753 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:46:30,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051284131] [2022-11-02 20:46:30,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:46:30,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:46:30,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:46:30,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:46:30,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:46:30,755 INFO L87 Difference]: Start difference. First operand 4409 states and 5160 transitions. Second operand has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 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 20:46:33,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:46:33,360 INFO L93 Difference]: Finished difference Result 10936 states and 12970 transitions. [2022-11-02 20:46:33,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:46:33,361 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 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 187 [2022-11-02 20:46:33,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:46:33,380 INFO L225 Difference]: With dead ends: 10936 [2022-11-02 20:46:33,380 INFO L226 Difference]: Without dead ends: 6528 [2022-11-02 20:46:33,385 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 20:46:33,386 INFO L413 NwaCegarLoop]: 382 mSDtfsCounter, 418 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 1215 mSolverCounterSat, 274 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 418 SdHoareTripleChecker+Valid, 444 SdHoareTripleChecker+Invalid, 1489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 274 IncrementalHoareTripleChecker+Valid, 1215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-02 20:46:33,387 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [418 Valid, 444 Invalid, 1489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [274 Valid, 1215 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-11-02 20:46:33,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6528 states. [2022-11-02 20:46:33,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6528 to 4382. [2022-11-02 20:46:33,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4382 states, 4381 states have (on average 1.1684546907098836) internal successors, (5119), 4381 states have internal predecessors, (5119), 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 20:46:33,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4382 states to 4382 states and 5119 transitions. [2022-11-02 20:46:33,484 INFO L78 Accepts]: Start accepts. Automaton has 4382 states and 5119 transitions. Word has length 187 [2022-11-02 20:46:33,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:46:33,485 INFO L495 AbstractCegarLoop]: Abstraction has 4382 states and 5119 transitions. [2022-11-02 20:46:33,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 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 20:46:33,485 INFO L276 IsEmpty]: Start isEmpty. Operand 4382 states and 5119 transitions. [2022-11-02 20:46:33,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2022-11-02 20:46:33,489 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:46:33,489 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:46:33,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-02 20:46:33,489 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:46:33,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:46:33,490 INFO L85 PathProgramCache]: Analyzing trace with hash -386675243, now seen corresponding path program 1 times [2022-11-02 20:46:33,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:46:33,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445510588] [2022-11-02 20:46:33,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:46:33,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:46:33,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:46:33,830 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-11-02 20:46:33,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:46:33,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445510588] [2022-11-02 20:46:33,830 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445510588] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:46:33,831 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:46:33,831 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:46:33,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265625887] [2022-11-02 20:46:33,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:46:33,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:46:33,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:46:33,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:46:33,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:46:33,833 INFO L87 Difference]: Start difference. First operand 4382 states and 5119 transitions. Second operand has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:46:36,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:46:36,466 INFO L93 Difference]: Finished difference Result 10045 states and 11706 transitions. [2022-11-02 20:46:36,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:46:36,467 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 253 [2022-11-02 20:46:36,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:46:36,480 INFO L225 Difference]: With dead ends: 10045 [2022-11-02 20:46:36,480 INFO L226 Difference]: Without dead ends: 5665 [2022-11-02 20:46:36,485 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 20:46:36,486 INFO L413 NwaCegarLoop]: 833 mSDtfsCounter, 403 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 1342 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 403 SdHoareTripleChecker+Valid, 894 SdHoareTripleChecker+Invalid, 1409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 1342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-02 20:46:36,486 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [403 Valid, 894 Invalid, 1409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 1342 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-11-02 20:46:36,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5665 states. [2022-11-02 20:46:36,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5665 to 5234. [2022-11-02 20:46:36,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5234 states, 5233 states have (on average 1.1587999235620103) internal successors, (6064), 5233 states have internal predecessors, (6064), 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 20:46:36,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5234 states to 5234 states and 6064 transitions. [2022-11-02 20:46:36,581 INFO L78 Accepts]: Start accepts. Automaton has 5234 states and 6064 transitions. Word has length 253 [2022-11-02 20:46:36,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:46:36,582 INFO L495 AbstractCegarLoop]: Abstraction has 5234 states and 6064 transitions. [2022-11-02 20:46:36,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:46:36,582 INFO L276 IsEmpty]: Start isEmpty. Operand 5234 states and 6064 transitions. [2022-11-02 20:46:36,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2022-11-02 20:46:36,586 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:46:36,587 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:46:36,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-02 20:46:36,587 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:46:36,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:46:36,588 INFO L85 PathProgramCache]: Analyzing trace with hash -2040583175, now seen corresponding path program 1 times [2022-11-02 20:46:36,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:46:36,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098041331] [2022-11-02 20:46:36,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:46:36,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:46:36,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:46:36,992 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 225 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2022-11-02 20:46:36,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:46:36,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098041331] [2022-11-02 20:46:36,993 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098041331] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:46:36,993 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:46:36,993 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:46:36,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128185166] [2022-11-02 20:46:36,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:46:36,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:46:36,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:46:36,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:46:36,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:46:36,995 INFO L87 Difference]: Start difference. First operand 5234 states and 6064 transitions. Second operand has 3 states, 3 states have (on average 61.666666666666664) internal successors, (185), 3 states have internal predecessors, (185), 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 20:46:40,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:46:40,032 INFO L93 Difference]: Finished difference Result 13049 states and 15222 transitions. [2022-11-02 20:46:40,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:46:40,032 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 61.666666666666664) internal successors, (185), 3 states have internal predecessors, (185), 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 265 [2022-11-02 20:46:40,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:46:40,049 INFO L225 Difference]: With dead ends: 13049 [2022-11-02 20:46:40,049 INFO L226 Difference]: Without dead ends: 6942 [2022-11-02 20:46:40,055 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 20:46:40,056 INFO L413 NwaCegarLoop]: 586 mSDtfsCounter, 493 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 1238 mSolverCounterSat, 350 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 493 SdHoareTripleChecker+Valid, 630 SdHoareTripleChecker+Invalid, 1588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 350 IncrementalHoareTripleChecker+Valid, 1238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-11-02 20:46:40,057 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [493 Valid, 630 Invalid, 1588 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [350 Valid, 1238 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-11-02 20:46:40,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6942 states. [2022-11-02 20:46:40,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6942 to 6512. [2022-11-02 20:46:40,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6512 states, 6511 states have (on average 1.1520503762862848) internal successors, (7501), 6511 states have internal predecessors, (7501), 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 20:46:40,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6512 states to 6512 states and 7501 transitions. [2022-11-02 20:46:40,198 INFO L78 Accepts]: Start accepts. Automaton has 6512 states and 7501 transitions. Word has length 265 [2022-11-02 20:46:40,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:46:40,199 INFO L495 AbstractCegarLoop]: Abstraction has 6512 states and 7501 transitions. [2022-11-02 20:46:40,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.666666666666664) internal successors, (185), 3 states have internal predecessors, (185), 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 20:46:40,200 INFO L276 IsEmpty]: Start isEmpty. Operand 6512 states and 7501 transitions. [2022-11-02 20:46:40,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2022-11-02 20:46:40,206 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:46:40,206 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 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 20:46:40,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-02 20:46:40,207 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:46:40,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:46:40,207 INFO L85 PathProgramCache]: Analyzing trace with hash -455120796, now seen corresponding path program 1 times [2022-11-02 20:46:40,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:46:40,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081636379] [2022-11-02 20:46:40,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:46:40,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:46:40,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:46:40,657 INFO L134 CoverageAnalysis]: Checked inductivity of 307 backedges. 225 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-11-02 20:46:40,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:46:40,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081636379] [2022-11-02 20:46:40,658 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081636379] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:46:40,658 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:46:40,659 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:46:40,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404544286] [2022-11-02 20:46:40,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:46:40,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:46:40,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:46:40,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:46:40,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:46:40,661 INFO L87 Difference]: Start difference. First operand 6512 states and 7501 transitions. Second operand has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 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 20:46:43,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:46:43,028 INFO L93 Difference]: Finished difference Result 16010 states and 18477 transitions. [2022-11-02 20:46:43,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:46:43,031 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 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 288 [2022-11-02 20:46:43,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:46:43,050 INFO L225 Difference]: With dead ends: 16010 [2022-11-02 20:46:43,051 INFO L226 Difference]: Without dead ends: 9500 [2022-11-02 20:46:43,056 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 20:46:43,057 INFO L413 NwaCegarLoop]: 293 mSDtfsCounter, 416 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 1221 mSolverCounterSat, 192 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 416 SdHoareTripleChecker+Valid, 337 SdHoareTripleChecker+Invalid, 1413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 192 IncrementalHoareTripleChecker+Valid, 1221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:46:43,061 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [416 Valid, 337 Invalid, 1413 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [192 Valid, 1221 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-11-02 20:46:43,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9500 states. [2022-11-02 20:46:43,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9500 to 8644. [2022-11-02 20:46:43,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8644 states, 8643 states have (on average 1.1545759574221914) internal successors, (9979), 8643 states have internal predecessors, (9979), 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 20:46:43,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8644 states to 8644 states and 9979 transitions. [2022-11-02 20:46:43,275 INFO L78 Accepts]: Start accepts. Automaton has 8644 states and 9979 transitions. Word has length 288 [2022-11-02 20:46:43,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:46:43,276 INFO L495 AbstractCegarLoop]: Abstraction has 8644 states and 9979 transitions. [2022-11-02 20:46:43,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 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 20:46:43,277 INFO L276 IsEmpty]: Start isEmpty. Operand 8644 states and 9979 transitions. [2022-11-02 20:46:43,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2022-11-02 20:46:43,282 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:46:43,282 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 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 20:46:43,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-02 20:46:43,285 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:46:43,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:46:43,286 INFO L85 PathProgramCache]: Analyzing trace with hash 777395375, now seen corresponding path program 1 times [2022-11-02 20:46:43,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:46:43,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744368925] [2022-11-02 20:46:43,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:46:43,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:46:43,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:46:43,811 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 235 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-11-02 20:46:43,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:46:43,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744368925] [2022-11-02 20:46:43,812 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744368925] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:46:43,812 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:46:43,812 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:46:43,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234428509] [2022-11-02 20:46:43,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:46:43,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:46:43,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:46:43,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:46:43,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:46:43,815 INFO L87 Difference]: Start difference. First operand 8644 states and 9979 transitions. Second operand has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:46:48,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:46:48,197 INFO L93 Difference]: Finished difference Result 30559 states and 35506 transitions. [2022-11-02 20:46:48,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:46:48,199 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 293 [2022-11-02 20:46:48,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:46:48,235 INFO L225 Difference]: With dead ends: 30559 [2022-11-02 20:46:48,235 INFO L226 Difference]: Without dead ends: 21062 [2022-11-02 20:46:48,243 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 20:46:48,244 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 890 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 2493 mSolverCounterSat, 458 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 890 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 2951 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 458 IncrementalHoareTripleChecker+Valid, 2493 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:46:48,245 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [890 Valid, 241 Invalid, 2951 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [458 Valid, 2493 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2022-11-02 20:46:48,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21062 states. [2022-11-02 20:46:48,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21062 to 21022. [2022-11-02 20:46:48,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21022 states, 21021 states have (on average 1.142286285143428) internal successors, (24012), 21021 states have internal predecessors, (24012), 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 20:46:48,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21022 states to 21022 states and 24012 transitions. [2022-11-02 20:46:48,562 INFO L78 Accepts]: Start accepts. Automaton has 21022 states and 24012 transitions. Word has length 293 [2022-11-02 20:46:48,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:46:48,562 INFO L495 AbstractCegarLoop]: Abstraction has 21022 states and 24012 transitions. [2022-11-02 20:46:48,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:46:48,563 INFO L276 IsEmpty]: Start isEmpty. Operand 21022 states and 24012 transitions. [2022-11-02 20:46:48,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2022-11-02 20:46:48,570 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:46:48,570 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:46:48,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-02 20:46:48,571 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:46:48,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:46:48,576 INFO L85 PathProgramCache]: Analyzing trace with hash -1748178961, now seen corresponding path program 1 times [2022-11-02 20:46:48,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:46:48,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100103094] [2022-11-02 20:46:48,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:46:48,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:46:48,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:46:49,626 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 256 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:46:49,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:46:49,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100103094] [2022-11-02 20:46:49,627 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100103094] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:46:49,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1318839090] [2022-11-02 20:46:49,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:46:49,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:46:49,628 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f719fe1a-3284-42a5-b3b5-313ecd427779/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:46:49,630 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f719fe1a-3284-42a5-b3b5-313ecd427779/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:46:49,635 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f719fe1a-3284-42a5-b3b5-313ecd427779/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-02 20:46:49,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:46:49,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 467 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:46:49,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:46:50,576 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 248 proven. 82 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-02 20:46:50,576 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:46:52,000 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 248 proven. 82 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-02 20:46:52,001 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1318839090] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:46:52,001 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:46:52,001 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3, 3] total 9 [2022-11-02 20:46:52,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633134866] [2022-11-02 20:46:52,002 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:46:52,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 20:46:52,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:46:52,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 20:46:52,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:46:52,005 INFO L87 Difference]: Start difference. First operand 21022 states and 24012 transitions. Second operand has 9 states, 9 states have (on average 90.44444444444444) internal successors, (814), 9 states have internal predecessors, (814), 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 20:47:10,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:47:10,436 INFO L93 Difference]: Finished difference Result 105988 states and 120966 transitions. [2022-11-02 20:47:10,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-02 20:47:10,439 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 90.44444444444444) internal successors, (814), 9 states have internal predecessors, (814), 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 328 [2022-11-02 20:47:10,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:47:10,584 INFO L225 Difference]: With dead ends: 105988 [2022-11-02 20:47:10,584 INFO L226 Difference]: Without dead ends: 81137 [2022-11-02 20:47:10,608 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 687 GetRequests, 666 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=153, Invalid=353, Unknown=0, NotChecked=0, Total=506 [2022-11-02 20:47:10,609 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 10623 mSDsluCounter, 408 mSDsCounter, 0 mSdLazyCounter, 12333 mSolverCounterSat, 2544 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10623 SdHoareTripleChecker+Valid, 529 SdHoareTripleChecker+Invalid, 14877 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2544 IncrementalHoareTripleChecker+Valid, 12333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:47:10,609 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10623 Valid, 529 Invalid, 14877 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2544 Valid, 12333 Invalid, 0 Unknown, 0 Unchecked, 17.3s Time] [2022-11-02 20:47:10,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81137 states. [2022-11-02 20:47:11,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81137 to 64882. [2022-11-02 20:47:11,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64882 states, 64881 states have (on average 1.1262465128465962) internal successors, (73072), 64881 states have internal predecessors, (73072), 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 20:47:11,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64882 states to 64882 states and 73072 transitions. [2022-11-02 20:47:11,837 INFO L78 Accepts]: Start accepts. Automaton has 64882 states and 73072 transitions. Word has length 328 [2022-11-02 20:47:11,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:47:11,838 INFO L495 AbstractCegarLoop]: Abstraction has 64882 states and 73072 transitions. [2022-11-02 20:47:11,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 90.44444444444444) internal successors, (814), 9 states have internal predecessors, (814), 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 20:47:11,839 INFO L276 IsEmpty]: Start isEmpty. Operand 64882 states and 73072 transitions. [2022-11-02 20:47:12,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 463 [2022-11-02 20:47:12,122 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:47:12,122 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:47:12,229 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f719fe1a-3284-42a5-b3b5-313ecd427779/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-02 20:47:12,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f719fe1a-3284-42a5-b3b5-313ecd427779/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-02 20:47:12,363 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:47:12,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:47:12,363 INFO L85 PathProgramCache]: Analyzing trace with hash -476858012, now seen corresponding path program 1 times [2022-11-02 20:47:12,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:47:12,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539960521] [2022-11-02 20:47:12,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:47:12,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:47:12,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:13,067 INFO L134 CoverageAnalysis]: Checked inductivity of 616 backedges. 292 proven. 0 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2022-11-02 20:47:13,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:47:13,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539960521] [2022-11-02 20:47:13,068 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539960521] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:47:13,068 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:47:13,068 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:47:13,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976515081] [2022-11-02 20:47:13,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:47:13,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:47:13,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:47:13,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:47:13,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:47:13,073 INFO L87 Difference]: Start difference. First operand 64882 states and 73072 transitions. Second operand has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 2 states have internal predecessors, (223), 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 20:47:14,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:47:14,856 INFO L93 Difference]: Finished difference Result 127619 states and 143705 transitions. [2022-11-02 20:47:14,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:47:14,857 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 2 states have internal predecessors, (223), 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 462 [2022-11-02 20:47:14,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:47:14,939 INFO L225 Difference]: With dead ends: 127619 [2022-11-02 20:47:14,939 INFO L226 Difference]: Without dead ends: 63588 [2022-11-02 20:47:14,979 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:47:14,980 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 608 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 655 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 608 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 662 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 655 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:47:14,980 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [608 Valid, 105 Invalid, 662 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 655 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-02 20:47:15,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63588 states. [2022-11-02 20:47:15,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63588 to 62722. [2022-11-02 20:47:15,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62722 states, 62721 states have (on average 1.122829674271775) internal successors, (70425), 62721 states have internal predecessors, (70425), 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 20:47:16,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62722 states to 62722 states and 70425 transitions. [2022-11-02 20:47:16,222 INFO L78 Accepts]: Start accepts. Automaton has 62722 states and 70425 transitions. Word has length 462 [2022-11-02 20:47:16,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:47:16,223 INFO L495 AbstractCegarLoop]: Abstraction has 62722 states and 70425 transitions. [2022-11-02 20:47:16,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 2 states have internal predecessors, (223), 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 20:47:16,224 INFO L276 IsEmpty]: Start isEmpty. Operand 62722 states and 70425 transitions. [2022-11-02 20:47:16,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 491 [2022-11-02 20:47:16,257 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:47:16,257 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:47:16,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-02 20:47:16,258 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:47:16,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:47:16,259 INFO L85 PathProgramCache]: Analyzing trace with hash -356067670, now seen corresponding path program 1 times [2022-11-02 20:47:16,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:47:16,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212705956] [2022-11-02 20:47:16,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:47:16,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:47:16,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:16,901 INFO L134 CoverageAnalysis]: Checked inductivity of 620 backedges. 451 proven. 0 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2022-11-02 20:47:16,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:47:16,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212705956] [2022-11-02 20:47:16,902 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212705956] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:47:16,902 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:47:16,902 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:47:16,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271713983] [2022-11-02 20:47:16,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:47:16,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:47:16,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:47:16,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:47:16,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:47:16,905 INFO L87 Difference]: Start difference. First operand 62722 states and 70425 transitions. Second operand has 3 states, 3 states have (on average 107.66666666666667) internal successors, (323), 3 states have internal predecessors, (323), 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 20:47:19,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:47:19,529 INFO L93 Difference]: Finished difference Result 132667 states and 149090 transitions. [2022-11-02 20:47:19,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:47:19,531 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 107.66666666666667) internal successors, (323), 3 states have internal predecessors, (323), 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 490 [2022-11-02 20:47:19,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:47:19,620 INFO L225 Difference]: With dead ends: 132667 [2022-11-02 20:47:19,620 INFO L226 Difference]: Without dead ends: 70797 [2022-11-02 20:47:19,651 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 20:47:19,652 INFO L413 NwaCegarLoop]: 715 mSDtfsCounter, 242 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 1141 mSolverCounterSat, 214 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 777 SdHoareTripleChecker+Invalid, 1355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 214 IncrementalHoareTripleChecker+Valid, 1141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:47:19,652 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [242 Valid, 777 Invalid, 1355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [214 Valid, 1141 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-02 20:47:19,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70797 states. [2022-11-02 20:47:20,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70797 to 64422. [2022-11-02 20:47:21,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64422 states, 64421 states have (on average 1.111640614085469) internal successors, (71613), 64421 states have internal predecessors, (71613), 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 20:47:21,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64422 states to 64422 states and 71613 transitions. [2022-11-02 20:47:21,129 INFO L78 Accepts]: Start accepts. Automaton has 64422 states and 71613 transitions. Word has length 490 [2022-11-02 20:47:21,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:47:21,130 INFO L495 AbstractCegarLoop]: Abstraction has 64422 states and 71613 transitions. [2022-11-02 20:47:21,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 107.66666666666667) internal successors, (323), 3 states have internal predecessors, (323), 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 20:47:21,130 INFO L276 IsEmpty]: Start isEmpty. Operand 64422 states and 71613 transitions. [2022-11-02 20:47:21,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 522 [2022-11-02 20:47:21,154 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:47:21,155 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:47:21,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-02 20:47:21,155 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:47:21,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:47:21,156 INFO L85 PathProgramCache]: Analyzing trace with hash 763660211, now seen corresponding path program 1 times [2022-11-02 20:47:21,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:47:21,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805232720] [2022-11-02 20:47:21,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:47:21,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:47:21,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:22,007 INFO L134 CoverageAnalysis]: Checked inductivity of 932 backedges. 721 proven. 0 refuted. 0 times theorem prover too weak. 211 trivial. 0 not checked. [2022-11-02 20:47:22,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:47:22,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805232720] [2022-11-02 20:47:22,008 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805232720] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:47:22,008 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:47:22,008 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:47:22,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988042836] [2022-11-02 20:47:22,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:47:22,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:47:22,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:47:22,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:47:22,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:47:22,010 INFO L87 Difference]: Start difference. First operand 64422 states and 71613 transitions. Second operand has 3 states, 3 states have (on average 114.66666666666667) internal successors, (344), 3 states have internal predecessors, (344), 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 20:47:25,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:47:25,048 INFO L93 Difference]: Finished difference Result 144604 states and 161349 transitions. [2022-11-02 20:47:25,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:47:25,048 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 114.66666666666667) internal successors, (344), 3 states have internal predecessors, (344), 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 521 [2022-11-02 20:47:25,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:47:25,132 INFO L225 Difference]: With dead ends: 144604 [2022-11-02 20:47:25,132 INFO L226 Difference]: Without dead ends: 80609 [2022-11-02 20:47:25,165 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 20:47:25,165 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 437 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 1212 mSolverCounterSat, 241 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 437 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 1453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 241 IncrementalHoareTripleChecker+Valid, 1212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-02 20:47:25,166 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [437 Valid, 209 Invalid, 1453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [241 Valid, 1212 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-11-02 20:47:25,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80609 states. [2022-11-02 20:47:26,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80609 to 77184. [2022-11-02 20:47:26,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77184 states, 77183 states have (on average 1.108288094528588) internal successors, (85541), 77183 states have internal predecessors, (85541), 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 20:47:26,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77184 states to 77184 states and 85541 transitions. [2022-11-02 20:47:26,302 INFO L78 Accepts]: Start accepts. Automaton has 77184 states and 85541 transitions. Word has length 521 [2022-11-02 20:47:26,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:47:26,302 INFO L495 AbstractCegarLoop]: Abstraction has 77184 states and 85541 transitions. [2022-11-02 20:47:26,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 114.66666666666667) internal successors, (344), 3 states have internal predecessors, (344), 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 20:47:26,302 INFO L276 IsEmpty]: Start isEmpty. Operand 77184 states and 85541 transitions. [2022-11-02 20:47:26,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 544 [2022-11-02 20:47:26,317 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:47:26,318 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:47:26,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-02 20:47:26,318 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:47:26,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:47:26,319 INFO L85 PathProgramCache]: Analyzing trace with hash 881731572, now seen corresponding path program 1 times [2022-11-02 20:47:26,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:47:26,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767943665] [2022-11-02 20:47:26,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:47:26,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:47:26,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:27,108 INFO L134 CoverageAnalysis]: Checked inductivity of 931 backedges. 421 proven. 0 refuted. 0 times theorem prover too weak. 510 trivial. 0 not checked. [2022-11-02 20:47:27,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:47:27,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767943665] [2022-11-02 20:47:27,109 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767943665] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:47:27,109 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:47:27,109 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:47:27,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84843943] [2022-11-02 20:47:27,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:47:27,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:47:27,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:47:27,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:47:27,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:47:27,112 INFO L87 Difference]: Start difference. First operand 77184 states and 85541 transitions. Second operand has 3 states, 3 states have (on average 88.33333333333333) internal successors, (265), 3 states have internal predecessors, (265), 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 20:47:30,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:47:30,007 INFO L93 Difference]: Finished difference Result 170549 states and 188696 transitions. [2022-11-02 20:47:30,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:47:30,007 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 88.33333333333333) internal successors, (265), 3 states have internal predecessors, (265), 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 543 [2022-11-02 20:47:30,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:47:30,092 INFO L225 Difference]: With dead ends: 170549 [2022-11-02 20:47:30,092 INFO L226 Difference]: Without dead ends: 93792 [2022-11-02 20:47:30,119 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 20:47:30,119 INFO L413 NwaCegarLoop]: 207 mSDtfsCounter, 404 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 1235 mSolverCounterSat, 187 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 404 SdHoareTripleChecker+Valid, 247 SdHoareTripleChecker+Invalid, 1422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 187 IncrementalHoareTripleChecker+Valid, 1235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:47:30,119 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [404 Valid, 247 Invalid, 1422 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [187 Valid, 1235 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-11-02 20:47:30,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93792 states. [2022-11-02 20:47:31,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93792 to 86959. [2022-11-02 20:47:31,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86959 states, 86958 states have (on average 1.104107730168587) internal successors, (96011), 86958 states have internal predecessors, (96011), 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 20:47:31,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86959 states to 86959 states and 96011 transitions. [2022-11-02 20:47:31,350 INFO L78 Accepts]: Start accepts. Automaton has 86959 states and 96011 transitions. Word has length 543 [2022-11-02 20:47:31,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:47:31,350 INFO L495 AbstractCegarLoop]: Abstraction has 86959 states and 96011 transitions. [2022-11-02 20:47:31,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 88.33333333333333) internal successors, (265), 3 states have internal predecessors, (265), 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 20:47:31,351 INFO L276 IsEmpty]: Start isEmpty. Operand 86959 states and 96011 transitions. [2022-11-02 20:47:31,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 548 [2022-11-02 20:47:31,365 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:47:31,365 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:47:31,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-02 20:47:31,366 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:47:31,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:47:31,366 INFO L85 PathProgramCache]: Analyzing trace with hash -310110351, now seen corresponding path program 1 times [2022-11-02 20:47:31,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:47:31,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605002152] [2022-11-02 20:47:31,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:47:31,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:47:31,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:32,084 INFO L134 CoverageAnalysis]: Checked inductivity of 642 backedges. 366 proven. 0 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2022-11-02 20:47:32,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:47:32,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605002152] [2022-11-02 20:47:32,085 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605002152] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:47:32,085 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:47:32,085 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:47:32,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695054731] [2022-11-02 20:47:32,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:47:32,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:47:32,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:47:32,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:47:32,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:47:32,088 INFO L87 Difference]: Start difference. First operand 86959 states and 96011 transitions. Second operand has 3 states, 3 states have (on average 118.33333333333333) internal successors, (355), 3 states have internal predecessors, (355), 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 20:47:35,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:47:35,037 INFO L93 Difference]: Finished difference Result 181573 states and 200325 transitions. [2022-11-02 20:47:35,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:47:35,038 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 118.33333333333333) internal successors, (355), 3 states have internal predecessors, (355), 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 547 [2022-11-02 20:47:35,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:47:35,139 INFO L225 Difference]: With dead ends: 181573 [2022-11-02 20:47:35,139 INFO L226 Difference]: Without dead ends: 95041 [2022-11-02 20:47:35,161 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 20:47:35,162 INFO L413 NwaCegarLoop]: 631 mSDtfsCounter, 491 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 1148 mSolverCounterSat, 180 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 491 SdHoareTripleChecker+Valid, 678 SdHoareTripleChecker+Invalid, 1328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 180 IncrementalHoareTripleChecker+Valid, 1148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:47:35,163 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [491 Valid, 678 Invalid, 1328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [180 Valid, 1148 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-11-02 20:47:35,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95041 states. [2022-11-02 20:47:36,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95041 to 92910. [2022-11-02 20:47:36,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92910 states, 92909 states have (on average 1.0950069422768516) internal successors, (101736), 92909 states have internal predecessors, (101736), 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 20:47:36,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92910 states to 92910 states and 101736 transitions. [2022-11-02 20:47:36,690 INFO L78 Accepts]: Start accepts. Automaton has 92910 states and 101736 transitions. Word has length 547 [2022-11-02 20:47:36,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:47:36,691 INFO L495 AbstractCegarLoop]: Abstraction has 92910 states and 101736 transitions. [2022-11-02 20:47:36,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 118.33333333333333) internal successors, (355), 3 states have internal predecessors, (355), 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 20:47:36,691 INFO L276 IsEmpty]: Start isEmpty. Operand 92910 states and 101736 transitions. [2022-11-02 20:47:36,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 584 [2022-11-02 20:47:36,715 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:47:36,715 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:47:36,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-02 20:47:36,716 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:47:36,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:47:36,716 INFO L85 PathProgramCache]: Analyzing trace with hash -1146562689, now seen corresponding path program 1 times [2022-11-02 20:47:36,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:47:36,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380702687] [2022-11-02 20:47:36,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:47:36,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:47:36,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:37,428 INFO L134 CoverageAnalysis]: Checked inductivity of 1034 backedges. 805 proven. 0 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2022-11-02 20:47:37,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:47:37,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380702687] [2022-11-02 20:47:37,428 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380702687] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:47:37,429 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:47:37,429 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:47:37,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721789193] [2022-11-02 20:47:37,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:47:37,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:47:37,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:47:37,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:47:37,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:47:37,431 INFO L87 Difference]: Start difference. First operand 92910 states and 101736 transitions. Second operand has 4 states, 4 states have (on average 107.25) internal successors, (429), 4 states have internal predecessors, (429), 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 20:47:42,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:47:42,441 INFO L93 Difference]: Finished difference Result 215628 states and 235516 transitions. [2022-11-02 20:47:42,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:47:42,442 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 107.25) internal successors, (429), 4 states have internal predecessors, (429), 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 583 [2022-11-02 20:47:42,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:47:42,599 INFO L225 Difference]: With dead ends: 215628 [2022-11-02 20:47:42,599 INFO L226 Difference]: Without dead ends: 123145 [2022-11-02 20:47:42,894 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 20:47:42,901 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 759 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 2333 mSolverCounterSat, 488 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 759 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 2821 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 488 IncrementalHoareTripleChecker+Valid, 2333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:47:42,902 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [759 Valid, 169 Invalid, 2821 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [488 Valid, 2333 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-11-02 20:47:42,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123145 states. [2022-11-02 20:47:44,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123145 to 118038. [2022-11-02 20:47:44,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118038 states, 118037 states have (on average 1.0869218973711632) internal successors, (128297), 118037 states have internal predecessors, (128297), 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 20:47:44,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118038 states to 118038 states and 128297 transitions. [2022-11-02 20:47:44,454 INFO L78 Accepts]: Start accepts. Automaton has 118038 states and 128297 transitions. Word has length 583 [2022-11-02 20:47:44,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:47:44,455 INFO L495 AbstractCegarLoop]: Abstraction has 118038 states and 128297 transitions. [2022-11-02 20:47:44,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 107.25) internal successors, (429), 4 states have internal predecessors, (429), 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 20:47:44,455 INFO L276 IsEmpty]: Start isEmpty. Operand 118038 states and 128297 transitions. [2022-11-02 20:47:44,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 593 [2022-11-02 20:47:44,473 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:47:44,473 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:47:44,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-02 20:47:44,474 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:47:44,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:47:44,474 INFO L85 PathProgramCache]: Analyzing trace with hash -2101267036, now seen corresponding path program 1 times [2022-11-02 20:47:44,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:47:44,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428462348] [2022-11-02 20:47:44,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:47:44,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:47:45,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:45,536 INFO L134 CoverageAnalysis]: Checked inductivity of 1463 backedges. 1051 proven. 0 refuted. 0 times theorem prover too weak. 412 trivial. 0 not checked. [2022-11-02 20:47:45,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:47:45,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428462348] [2022-11-02 20:47:45,537 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428462348] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:47:45,537 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:47:45,537 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:47:45,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174576529] [2022-11-02 20:47:45,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:47:45,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:47:45,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:47:45,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:47:45,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:47:45,542 INFO L87 Difference]: Start difference. First operand 118038 states and 128297 transitions. Second operand has 3 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 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 20:47:48,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:47:48,800 INFO L93 Difference]: Finished difference Result 244582 states and 265624 transitions. [2022-11-02 20:47:48,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:47:48,801 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 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 592 [2022-11-02 20:47:48,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:47:48,956 INFO L225 Difference]: With dead ends: 244582 [2022-11-02 20:47:48,956 INFO L226 Difference]: Without dead ends: 126971 [2022-11-02 20:47:49,012 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 20:47:49,013 INFO L413 NwaCegarLoop]: 292 mSDtfsCounter, 392 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 1149 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 392 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 1263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 1149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:47:49,013 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [392 Valid, 345 Invalid, 1263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 1149 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-11-02 20:47:49,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126971 states. [2022-11-02 20:47:51,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126971 to 124836. [2022-11-02 20:47:51,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124836 states, 124835 states have (on average 1.083702487283214) internal successors, (135284), 124835 states have internal predecessors, (135284), 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 20:47:51,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124836 states to 124836 states and 135284 transitions. [2022-11-02 20:47:51,242 INFO L78 Accepts]: Start accepts. Automaton has 124836 states and 135284 transitions. Word has length 592 [2022-11-02 20:47:51,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:47:51,243 INFO L495 AbstractCegarLoop]: Abstraction has 124836 states and 135284 transitions. [2022-11-02 20:47:51,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 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 20:47:51,243 INFO L276 IsEmpty]: Start isEmpty. Operand 124836 states and 135284 transitions. [2022-11-02 20:47:51,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 596 [2022-11-02 20:47:51,256 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:47:51,256 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:47:51,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-02 20:47:51,257 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:47:51,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:47:51,258 INFO L85 PathProgramCache]: Analyzing trace with hash 2099697401, now seen corresponding path program 1 times [2022-11-02 20:47:51,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:47:51,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574641639] [2022-11-02 20:47:51,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:47:51,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:47:51,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:51,932 INFO L134 CoverageAnalysis]: Checked inductivity of 568 backedges. 323 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2022-11-02 20:47:51,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:47:51,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574641639] [2022-11-02 20:47:51,933 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574641639] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:47:51,933 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:47:51,933 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:47:51,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42874109] [2022-11-02 20:47:51,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:47:51,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:47:51,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:47:51,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:47:51,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:47:51,936 INFO L87 Difference]: Start difference. First operand 124836 states and 135284 transitions. Second operand has 3 states, 3 states have (on average 144.33333333333334) internal successors, (433), 3 states have internal predecessors, (433), 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 20:47:55,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:47:55,634 INFO L93 Difference]: Finished difference Result 260764 states and 283084 transitions. [2022-11-02 20:47:55,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:47:55,635 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 144.33333333333334) internal successors, (433), 3 states have internal predecessors, (433), 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 595 [2022-11-02 20:47:55,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:47:55,836 INFO L225 Difference]: With dead ends: 260764 [2022-11-02 20:47:55,836 INFO L226 Difference]: Without dead ends: 136355 [2022-11-02 20:47:55,906 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 20:47:55,907 INFO L413 NwaCegarLoop]: 216 mSDtfsCounter, 443 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 1194 mSolverCounterSat, 208 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 443 SdHoareTripleChecker+Valid, 254 SdHoareTripleChecker+Invalid, 1402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 208 IncrementalHoareTripleChecker+Valid, 1194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:47:55,908 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [443 Valid, 254 Invalid, 1402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [208 Valid, 1194 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-11-02 20:47:56,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136355 states. [2022-11-02 20:47:57,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136355 to 127405. [2022-11-02 20:47:57,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127405 states, 127404 states have (on average 1.0855467646227748) internal successors, (138303), 127404 states have internal predecessors, (138303), 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 20:47:57,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127405 states to 127405 states and 138303 transitions. [2022-11-02 20:47:57,947 INFO L78 Accepts]: Start accepts. Automaton has 127405 states and 138303 transitions. Word has length 595 [2022-11-02 20:47:57,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:47:57,948 INFO L495 AbstractCegarLoop]: Abstraction has 127405 states and 138303 transitions. [2022-11-02 20:47:57,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 144.33333333333334) internal successors, (433), 3 states have internal predecessors, (433), 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 20:47:57,948 INFO L276 IsEmpty]: Start isEmpty. Operand 127405 states and 138303 transitions. [2022-11-02 20:47:57,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 601 [2022-11-02 20:47:57,962 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:47:57,963 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:47:57,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-02 20:47:57,964 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:47:57,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:47:57,964 INFO L85 PathProgramCache]: Analyzing trace with hash 1573225274, now seen corresponding path program 1 times [2022-11-02 20:47:57,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:47:57,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746875286] [2022-11-02 20:47:57,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:47:57,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:47:58,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:59,442 INFO L134 CoverageAnalysis]: Checked inductivity of 583 backedges. 430 proven. 72 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2022-11-02 20:47:59,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:47:59,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746875286] [2022-11-02 20:47:59,443 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746875286] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:47:59,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [310684133] [2022-11-02 20:47:59,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:47:59,443 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:47:59,443 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f719fe1a-3284-42a5-b3b5-313ecd427779/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:47:59,447 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f719fe1a-3284-42a5-b3b5-313ecd427779/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:47:59,451 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f719fe1a-3284-42a5-b3b5-313ecd427779/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-02 20:47:59,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:59,707 INFO L263 TraceCheckSpWp]: Trace formula consists of 770 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 20:47:59,719 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:48:00,129 INFO L134 CoverageAnalysis]: Checked inductivity of 583 backedges. 307 proven. 31 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2022-11-02 20:48:00,130 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:48:00,358 INFO L134 CoverageAnalysis]: Checked inductivity of 583 backedges. 338 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2022-11-02 20:48:00,359 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [310684133] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-02 20:48:00,359 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:48:00,359 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 4] total 8 [2022-11-02 20:48:00,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739108336] [2022-11-02 20:48:00,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:48:00,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:48:00,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:48:00,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:48:00,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:48:00,362 INFO L87 Difference]: Start difference. First operand 127405 states and 138303 transitions. Second operand has 4 states, 4 states have (on average 109.5) internal successors, (438), 4 states have internal predecessors, (438), 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 20:48:05,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:48:05,944 INFO L93 Difference]: Finished difference Result 275670 states and 299240 transitions. [2022-11-02 20:48:05,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:48:05,945 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 109.5) internal successors, (438), 4 states have internal predecessors, (438), 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 600 [2022-11-02 20:48:05,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:48:06,135 INFO L225 Difference]: With dead ends: 275670 [2022-11-02 20:48:06,135 INFO L226 Difference]: Without dead ends: 145266 [2022-11-02 20:48:06,197 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1203 GetRequests, 1196 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:48:06,197 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 1032 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 2110 mSolverCounterSat, 810 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1032 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 2920 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 810 IncrementalHoareTripleChecker+Valid, 2110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:48:06,198 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1032 Valid, 138 Invalid, 2920 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [810 Valid, 2110 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-11-02 20:48:06,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145266 states. [2022-11-02 20:48:08,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145266 to 132898. [2022-11-02 20:48:08,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132898 states, 132897 states have (on average 1.084915385599374) internal successors, (144182), 132897 states have internal predecessors, (144182), 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)