./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.3.3.ufo.UNBOUNDED.pals.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_e362ed51-cd26-4fe6-b256-31a3fb53fda3/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e362ed51-cd26-4fe6-b256-31a3fb53fda3/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_e362ed51-cd26-4fe6-b256-31a3fb53fda3/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e362ed51-cd26-4fe6-b256-31a3fb53fda3/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.3.3.ufo.UNBOUNDED.pals.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e362ed51-cd26-4fe6-b256-31a3fb53fda3/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_e362ed51-cd26-4fe6-b256-31a3fb53fda3/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 588484d75150429774731f7aacf4daf77752c68fdc38fffa31465a5f910e2823 --- 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 20:11:15,592 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:11:15,593 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:11:15,621 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:11:15,622 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:11:15,623 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:11:15,624 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:11:15,626 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:11:15,628 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:11:15,629 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:11:15,630 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:11:15,631 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:11:15,631 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:11:15,632 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:11:15,633 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:11:15,634 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:11:15,635 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:11:15,636 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:11:15,638 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:11:15,640 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:11:15,642 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:11:15,643 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:11:15,644 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:11:15,645 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:11:15,649 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:11:15,649 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:11:15,649 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:11:15,650 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:11:15,651 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:11:15,652 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:11:15,652 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:11:15,653 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:11:15,654 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:11:15,655 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:11:15,656 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:11:15,656 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:11:15,657 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:11:15,657 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:11:15,658 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:11:15,659 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:11:15,659 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:11:15,660 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e362ed51-cd26-4fe6-b256-31a3fb53fda3/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-02 20:11:15,690 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:11:15,691 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:11:15,691 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:11:15,691 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:11:15,692 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:11:15,692 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:11:15,693 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:11:15,693 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:11:15,694 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:11:15,694 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:11:15,694 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 20:11:15,695 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:11:15,695 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 20:11:15,695 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:11:15,695 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:11:15,696 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:11:15,696 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:11:15,696 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 20:11:15,696 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:11:15,696 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:11:15,697 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:11:15,697 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:11:15,697 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:11:15,697 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:11:15,698 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:11:15,705 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:11:15,705 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:11:15,705 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:11:15,706 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:11:15,706 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:11:15,706 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:11:15,706 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:11:15,706 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:11:15,706 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_e362ed51-cd26-4fe6-b256-31a3fb53fda3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e362ed51-cd26-4fe6-b256-31a3fb53fda3/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 588484d75150429774731f7aacf4daf77752c68fdc38fffa31465a5f910e2823 [2022-11-02 20:11:15,966 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:11:15,988 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:11:15,991 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:11:15,992 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:11:15,993 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:11:15,994 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e362ed51-cd26-4fe6-b256-31a3fb53fda3/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.3.3.ufo.UNBOUNDED.pals.c [2022-11-02 20:11:16,066 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e362ed51-cd26-4fe6-b256-31a3fb53fda3/bin/uautomizer-Dbtcem3rbc/data/731acd356/62ec9e20a914427cbb947ce876f020ab/FLAG060d3728a [2022-11-02 20:11:16,637 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:11:16,638 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e362ed51-cd26-4fe6-b256-31a3fb53fda3/sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.3.3.ufo.UNBOUNDED.pals.c [2022-11-02 20:11:16,659 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e362ed51-cd26-4fe6-b256-31a3fb53fda3/bin/uautomizer-Dbtcem3rbc/data/731acd356/62ec9e20a914427cbb947ce876f020ab/FLAG060d3728a [2022-11-02 20:11:16,954 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e362ed51-cd26-4fe6-b256-31a3fb53fda3/bin/uautomizer-Dbtcem3rbc/data/731acd356/62ec9e20a914427cbb947ce876f020ab [2022-11-02 20:11:16,957 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:11:16,959 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:11:16,960 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:11:16,960 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:11:16,967 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:11:16,969 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:11:16" (1/1) ... [2022-11-02 20:11:16,972 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@700db858 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:11:16, skipping insertion in model container [2022-11-02 20:11:16,972 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:11:16" (1/1) ... [2022-11-02 20:11:16,980 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:11:17,032 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:11:17,311 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_e362ed51-cd26-4fe6-b256-31a3fb53fda3/sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.3.3.ufo.UNBOUNDED.pals.c[14511,14524] [2022-11-02 20:11:17,313 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:11:17,336 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:11:17,435 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_e362ed51-cd26-4fe6-b256-31a3fb53fda3/sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.3.3.ufo.UNBOUNDED.pals.c[14511,14524] [2022-11-02 20:11:17,445 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:11:17,460 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:11:17,460 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:11:17 WrapperNode [2022-11-02 20:11:17,468 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:11:17,469 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:11:17,469 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:11:17,473 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:11:17,480 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:11:17" (1/1) ... [2022-11-02 20:11:17,490 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:11:17" (1/1) ... [2022-11-02 20:11:17,521 INFO L138 Inliner]: procedures = 23, calls = 14, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 479 [2022-11-02 20:11:17,522 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:11:17,523 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:11:17,523 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:11:17,523 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:11:17,532 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:11:17" (1/1) ... [2022-11-02 20:11:17,532 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:11:17" (1/1) ... [2022-11-02 20:11:17,536 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:11:17" (1/1) ... [2022-11-02 20:11:17,537 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:11:17" (1/1) ... [2022-11-02 20:11:17,545 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:11:17" (1/1) ... [2022-11-02 20:11:17,551 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:11:17" (1/1) ... [2022-11-02 20:11:17,554 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:11:17" (1/1) ... [2022-11-02 20:11:17,556 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:11:17" (1/1) ... [2022-11-02 20:11:17,561 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:11:17,561 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:11:17,562 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:11:17,562 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:11:17,563 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:11:17" (1/1) ... [2022-11-02 20:11:17,570 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:11:17,599 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e362ed51-cd26-4fe6-b256-31a3fb53fda3/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:11:17,626 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e362ed51-cd26-4fe6-b256-31a3fb53fda3/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:11:17,655 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e362ed51-cd26-4fe6-b256-31a3fb53fda3/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:11:17,679 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:11:17,680 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 20:11:17,680 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:11:17,680 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:11:17,783 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:11:17,785 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:11:18,487 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:11:18,502 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:11:18,502 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-02 20:11:18,505 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:11:18 BoogieIcfgContainer [2022-11-02 20:11:18,505 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:11:18,507 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:11:18,513 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:11:18,517 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:11:18,517 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:11:16" (1/3) ... [2022-11-02 20:11:18,518 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77d889dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:11:18, skipping insertion in model container [2022-11-02 20:11:18,518 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:11:17" (2/3) ... [2022-11-02 20:11:18,519 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77d889dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:11:18, skipping insertion in model container [2022-11-02 20:11:18,519 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:11:18" (3/3) ... [2022-11-02 20:11:18,520 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.3.ufo.UNBOUNDED.pals.c [2022-11-02 20:11:18,540 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:11:18,541 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 20:11:18,597 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:11:18,604 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;@4e1d4b6e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:11:18,605 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 20:11:18,610 INFO L276 IsEmpty]: Start isEmpty. Operand has 149 states, 147 states have (on average 1.748299319727891) internal successors, (257), 148 states have internal predecessors, (257), 0 states have call successors, (0), 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 20:11:18,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-02 20:11:18,620 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:11:18,621 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:11:18,621 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:11:18,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:11:18,627 INFO L85 PathProgramCache]: Analyzing trace with hash -812713456, now seen corresponding path program 1 times [2022-11-02 20:11:18,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:11:18,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45679804] [2022-11-02 20:11:18,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:11:18,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:11:18,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:11:18,882 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 20:11:18,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:11:18,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45679804] [2022-11-02 20:11:18,885 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45679804] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:11:18,886 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:11:18,887 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:11:18,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331502430] [2022-11-02 20:11:18,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:11:18,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-02 20:11:18,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:11:18,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-02 20:11:18,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-02 20:11:18,938 INFO L87 Difference]: Start difference. First operand has 149 states, 147 states have (on average 1.748299319727891) internal successors, (257), 148 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:11:18,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:11:18,984 INFO L93 Difference]: Finished difference Result 235 states and 403 transitions. [2022-11-02 20:11:18,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-02 20:11:18,986 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2022-11-02 20:11:18,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:11:18,996 INFO L225 Difference]: With dead ends: 235 [2022-11-02 20:11:18,997 INFO L226 Difference]: Without dead ends: 145 [2022-11-02 20:11:19,000 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-02 20:11:19,003 INFO L413 NwaCegarLoop]: 250 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 250 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:11:19,005 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:11:19,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2022-11-02 20:11:19,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2022-11-02 20:11:19,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 144 states have (on average 1.7361111111111112) internal successors, (250), 144 states have internal predecessors, (250), 0 states have call successors, (0), 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 20:11:19,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 250 transitions. [2022-11-02 20:11:19,047 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 250 transitions. Word has length 37 [2022-11-02 20:11:19,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:11:19,047 INFO L495 AbstractCegarLoop]: Abstraction has 145 states and 250 transitions. [2022-11-02 20:11:19,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:11:19,048 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 250 transitions. [2022-11-02 20:11:19,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-02 20:11:19,049 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:11:19,050 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:11:19,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:11:19,050 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:11:19,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:11:19,051 INFO L85 PathProgramCache]: Analyzing trace with hash -1630361906, now seen corresponding path program 1 times [2022-11-02 20:11:19,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:11:19,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499270881] [2022-11-02 20:11:19,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:11:19,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:11:19,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:11:19,309 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 20:11:19,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:11:19,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499270881] [2022-11-02 20:11:19,310 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499270881] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:11:19,310 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:11:19,311 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:11:19,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047266018] [2022-11-02 20:11:19,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:11:19,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:11:19,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:11:19,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:11:19,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:11:19,314 INFO L87 Difference]: Start difference. First operand 145 states and 250 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:11:19,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:11:19,473 INFO L93 Difference]: Finished difference Result 234 states and 396 transitions. [2022-11-02 20:11:19,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:11:19,474 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2022-11-02 20:11:19,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:11:19,480 INFO L225 Difference]: With dead ends: 234 [2022-11-02 20:11:19,480 INFO L226 Difference]: Without dead ends: 145 [2022-11-02 20:11:19,481 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:11:19,482 INFO L413 NwaCegarLoop]: 248 mSDtfsCounter, 3 mSDsluCounter, 711 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 959 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:11:19,483 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 959 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:11:19,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2022-11-02 20:11:19,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2022-11-02 20:11:19,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 144 states have (on average 1.5277777777777777) internal successors, (220), 144 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:11:19,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 220 transitions. [2022-11-02 20:11:19,501 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 220 transitions. Word has length 37 [2022-11-02 20:11:19,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:11:19,503 INFO L495 AbstractCegarLoop]: Abstraction has 145 states and 220 transitions. [2022-11-02 20:11:19,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:11:19,504 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 220 transitions. [2022-11-02 20:11:19,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-02 20:11:19,507 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:11:19,507 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:11:19,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 20:11:19,510 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:11:19,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:11:19,511 INFO L85 PathProgramCache]: Analyzing trace with hash 190573204, now seen corresponding path program 1 times [2022-11-02 20:11:19,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:11:19,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68963043] [2022-11-02 20:11:19,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:11:19,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:11:19,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:11:19,732 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 20:11:19,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:11:19,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68963043] [2022-11-02 20:11:19,733 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68963043] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:11:19,733 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:11:19,733 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:11:19,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717660699] [2022-11-02 20:11:19,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:11:19,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:11:19,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:11:19,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:11:19,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:11:19,735 INFO L87 Difference]: Start difference. First operand 145 states and 220 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 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 20:11:19,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:11:19,803 INFO L93 Difference]: Finished difference Result 305 states and 486 transitions. [2022-11-02 20:11:19,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:11:19,803 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 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 66 [2022-11-02 20:11:19,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:11:19,807 INFO L225 Difference]: With dead ends: 305 [2022-11-02 20:11:19,807 INFO L226 Difference]: Without dead ends: 220 [2022-11-02 20:11:19,811 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 20:11:19,818 INFO L413 NwaCegarLoop]: 213 mSDtfsCounter, 115 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 388 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:11:19,819 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 388 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:11:19,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2022-11-02 20:11:19,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 217. [2022-11-02 20:11:19,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 216 states have (on average 1.5555555555555556) internal successors, (336), 216 states have internal predecessors, (336), 0 states have call successors, (0), 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 20:11:19,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 336 transitions. [2022-11-02 20:11:19,839 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 336 transitions. Word has length 66 [2022-11-02 20:11:19,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:11:19,840 INFO L495 AbstractCegarLoop]: Abstraction has 217 states and 336 transitions. [2022-11-02 20:11:19,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 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 20:11:19,846 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 336 transitions. [2022-11-02 20:11:19,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-02 20:11:19,854 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:11:19,854 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:11:19,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 20:11:19,855 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:11:19,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:11:19,857 INFO L85 PathProgramCache]: Analyzing trace with hash 1527919177, now seen corresponding path program 1 times [2022-11-02 20:11:19,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:11:19,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355039504] [2022-11-02 20:11:19,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:11:19,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:11:19,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:11:19,963 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 20:11:19,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:11:19,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355039504] [2022-11-02 20:11:19,964 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355039504] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:11:19,964 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:11:19,964 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:11:19,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249720241] [2022-11-02 20:11:19,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:11:19,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:11:19,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:11:19,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:11:19,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:11:19,966 INFO L87 Difference]: Start difference. First operand 217 states and 336 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 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 20:11:19,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:11:19,999 INFO L93 Difference]: Finished difference Result 515 states and 824 transitions. [2022-11-02 20:11:19,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:11:20,000 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 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 68 [2022-11-02 20:11:20,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:11:20,002 INFO L225 Difference]: With dead ends: 515 [2022-11-02 20:11:20,002 INFO L226 Difference]: Without dead ends: 358 [2022-11-02 20:11:20,002 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 20:11:20,003 INFO L413 NwaCegarLoop]: 217 mSDtfsCounter, 117 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 401 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:11:20,004 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 401 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:11:20,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2022-11-02 20:11:20,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 354. [2022-11-02 20:11:20,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 354 states, 353 states have (on average 1.5835694050991502) internal successors, (559), 353 states have internal predecessors, (559), 0 states have call successors, (0), 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 20:11:20,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 559 transitions. [2022-11-02 20:11:20,025 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 559 transitions. Word has length 68 [2022-11-02 20:11:20,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:11:20,026 INFO L495 AbstractCegarLoop]: Abstraction has 354 states and 559 transitions. [2022-11-02 20:11:20,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 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 20:11:20,026 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 559 transitions. [2022-11-02 20:11:20,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-11-02 20:11:20,027 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:11:20,028 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:11:20,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-02 20:11:20,028 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:11:20,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:11:20,029 INFO L85 PathProgramCache]: Analyzing trace with hash -1063335298, now seen corresponding path program 1 times [2022-11-02 20:11:20,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:11:20,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063988513] [2022-11-02 20:11:20,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:11:20,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:11:20,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:11:20,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:11:20,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:11:20,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063988513] [2022-11-02 20:11:20,152 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063988513] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:11:20,152 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:11:20,152 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:11:20,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375894730] [2022-11-02 20:11:20,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:11:20,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:11:20,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:11:20,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:11:20,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:11:20,158 INFO L87 Difference]: Start difference. First operand 354 states and 559 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:11:20,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:11:20,222 INFO L93 Difference]: Finished difference Result 910 states and 1465 transitions. [2022-11-02 20:11:20,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:11:20,223 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-11-02 20:11:20,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:11:20,226 INFO L225 Difference]: With dead ends: 910 [2022-11-02 20:11:20,227 INFO L226 Difference]: Without dead ends: 616 [2022-11-02 20:11:20,227 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 20:11:20,232 INFO L413 NwaCegarLoop]: 217 mSDtfsCounter, 111 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 402 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:11:20,232 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 402 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:11:20,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 616 states. [2022-11-02 20:11:20,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 616 to 610. [2022-11-02 20:11:20,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 610 states, 609 states have (on average 1.5944170771756978) internal successors, (971), 609 states have internal predecessors, (971), 0 states have call successors, (0), 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 20:11:20,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 610 states to 610 states and 971 transitions. [2022-11-02 20:11:20,294 INFO L78 Accepts]: Start accepts. Automaton has 610 states and 971 transitions. Word has length 70 [2022-11-02 20:11:20,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:11:20,297 INFO L495 AbstractCegarLoop]: Abstraction has 610 states and 971 transitions. [2022-11-02 20:11:20,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:11:20,302 INFO L276 IsEmpty]: Start isEmpty. Operand 610 states and 971 transitions. [2022-11-02 20:11:20,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-11-02 20:11:20,304 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:11:20,304 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:11:20,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-02 20:11:20,305 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:11:20,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:11:20,305 INFO L85 PathProgramCache]: Analyzing trace with hash 845837107, now seen corresponding path program 1 times [2022-11-02 20:11:20,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:11:20,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349870158] [2022-11-02 20:11:20,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:11:20,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:11:20,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:11:20,502 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 20:11:20,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:11:20,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349870158] [2022-11-02 20:11:20,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349870158] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:11:20,503 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:11:20,503 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:11:20,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697927064] [2022-11-02 20:11:20,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:11:20,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:11:20,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:11:20,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:11:20,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:11:20,505 INFO L87 Difference]: Start difference. First operand 610 states and 971 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:11:20,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:11:20,750 INFO L93 Difference]: Finished difference Result 2622 states and 4281 transitions. [2022-11-02 20:11:20,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:11:20,751 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-11-02 20:11:20,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:11:20,762 INFO L225 Difference]: With dead ends: 2622 [2022-11-02 20:11:20,762 INFO L226 Difference]: Without dead ends: 2072 [2022-11-02 20:11:20,764 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:11:20,766 INFO L413 NwaCegarLoop]: 209 mSDtfsCounter, 936 mSDsluCounter, 1077 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 936 SdHoareTripleChecker+Valid, 1286 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:11:20,769 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [936 Valid, 1286 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:11:20,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2072 states. [2022-11-02 20:11:20,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2072 to 1092. [2022-11-02 20:11:20,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1092 states, 1091 states have (on average 1.6076993583868011) internal successors, (1754), 1091 states have internal predecessors, (1754), 0 states have call successors, (0), 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 20:11:20,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1092 states to 1092 states and 1754 transitions. [2022-11-02 20:11:20,837 INFO L78 Accepts]: Start accepts. Automaton has 1092 states and 1754 transitions. Word has length 72 [2022-11-02 20:11:20,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:11:20,838 INFO L495 AbstractCegarLoop]: Abstraction has 1092 states and 1754 transitions. [2022-11-02 20:11:20,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:11:20,839 INFO L276 IsEmpty]: Start isEmpty. Operand 1092 states and 1754 transitions. [2022-11-02 20:11:20,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-02 20:11:20,841 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:11:20,841 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:11:20,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-02 20:11:20,842 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:11:20,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:11:20,842 INFO L85 PathProgramCache]: Analyzing trace with hash -1471686026, now seen corresponding path program 1 times [2022-11-02 20:11:20,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:11:20,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846215004] [2022-11-02 20:11:20,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:11:20,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:11:20,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:11:20,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:11:20,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:11:20,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846215004] [2022-11-02 20:11:20,970 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846215004] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:11:20,970 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:11:20,970 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:11:20,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540110451] [2022-11-02 20:11:20,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:11:20,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:11:20,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:11:20,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:11:20,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:11:20,972 INFO L87 Difference]: Start difference. First operand 1092 states and 1754 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 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 20:11:21,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:11:21,151 INFO L93 Difference]: Finished difference Result 3182 states and 5186 transitions. [2022-11-02 20:11:21,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:11:21,152 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 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 73 [2022-11-02 20:11:21,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:11:21,159 INFO L225 Difference]: With dead ends: 3182 [2022-11-02 20:11:21,159 INFO L226 Difference]: Without dead ends: 2150 [2022-11-02 20:11:21,161 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:11:21,164 INFO L413 NwaCegarLoop]: 212 mSDtfsCounter, 413 mSDsluCounter, 511 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 413 SdHoareTripleChecker+Valid, 723 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:11:21,165 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [413 Valid, 723 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:11:21,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2150 states. [2022-11-02 20:11:21,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2150 to 1612. [2022-11-02 20:11:21,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1612 states, 1611 states have (on average 1.6157666045934203) internal successors, (2603), 1611 states have internal predecessors, (2603), 0 states have call successors, (0), 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 20:11:21,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1612 states to 1612 states and 2603 transitions. [2022-11-02 20:11:21,248 INFO L78 Accepts]: Start accepts. Automaton has 1612 states and 2603 transitions. Word has length 73 [2022-11-02 20:11:21,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:11:21,249 INFO L495 AbstractCegarLoop]: Abstraction has 1612 states and 2603 transitions. [2022-11-02 20:11:21,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 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 20:11:21,249 INFO L276 IsEmpty]: Start isEmpty. Operand 1612 states and 2603 transitions. [2022-11-02 20:11:21,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-02 20:11:21,253 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:11:21,253 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:11:21,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-02 20:11:21,253 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:11:21,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:11:21,256 INFO L85 PathProgramCache]: Analyzing trace with hash -131454774, now seen corresponding path program 1 times [2022-11-02 20:11:21,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:11:21,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607390931] [2022-11-02 20:11:21,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:11:21,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:11:21,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:11:21,363 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 20:11:21,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:11:21,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607390931] [2022-11-02 20:11:21,364 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607390931] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:11:21,364 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:11:21,364 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:11:21,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031066871] [2022-11-02 20:11:21,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:11:21,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:11:21,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:11:21,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:11:21,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:11:21,366 INFO L87 Difference]: Start difference. First operand 1612 states and 2603 transitions. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:11:21,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:11:21,589 INFO L93 Difference]: Finished difference Result 4676 states and 7610 transitions. [2022-11-02 20:11:21,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:11:21,590 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-11-02 20:11:21,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:11:21,600 INFO L225 Difference]: With dead ends: 4676 [2022-11-02 20:11:21,601 INFO L226 Difference]: Without dead ends: 3124 [2022-11-02 20:11:21,605 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:11:21,606 INFO L413 NwaCegarLoop]: 211 mSDtfsCounter, 411 mSDsluCounter, 513 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 411 SdHoareTripleChecker+Valid, 724 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:11:21,606 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [411 Valid, 724 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:11:21,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3124 states. [2022-11-02 20:11:21,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3124 to 2356. [2022-11-02 20:11:21,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2356 states, 2355 states have (on average 1.6148619957537156) internal successors, (3803), 2355 states have internal predecessors, (3803), 0 states have call successors, (0), 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 20:11:21,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2356 states to 2356 states and 3803 transitions. [2022-11-02 20:11:21,756 INFO L78 Accepts]: Start accepts. Automaton has 2356 states and 3803 transitions. Word has length 74 [2022-11-02 20:11:21,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:11:21,757 INFO L495 AbstractCegarLoop]: Abstraction has 2356 states and 3803 transitions. [2022-11-02 20:11:21,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:11:21,757 INFO L276 IsEmpty]: Start isEmpty. Operand 2356 states and 3803 transitions. [2022-11-02 20:11:21,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-11-02 20:11:21,762 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:11:21,763 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:11:21,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-02 20:11:21,765 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:11:21,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:11:21,765 INFO L85 PathProgramCache]: Analyzing trace with hash -1364954579, now seen corresponding path program 1 times [2022-11-02 20:11:21,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:11:21,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518358766] [2022-11-02 20:11:21,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:11:21,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:11:21,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:11:21,908 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 20:11:21,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:11:21,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518358766] [2022-11-02 20:11:21,909 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518358766] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:11:21,909 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:11:21,909 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:11:21,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112834226] [2022-11-02 20:11:21,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:11:21,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:11:21,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:11:21,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:11:21,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:11:21,911 INFO L87 Difference]: Start difference. First operand 2356 states and 3803 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 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 20:11:22,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:11:22,162 INFO L93 Difference]: Finished difference Result 6796 states and 11038 transitions. [2022-11-02 20:11:22,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:11:22,163 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 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 75 [2022-11-02 20:11:22,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:11:22,178 INFO L225 Difference]: With dead ends: 6796 [2022-11-02 20:11:22,178 INFO L226 Difference]: Without dead ends: 4500 [2022-11-02 20:11:22,182 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:11:22,184 INFO L413 NwaCegarLoop]: 218 mSDtfsCounter, 409 mSDsluCounter, 515 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 409 SdHoareTripleChecker+Valid, 733 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:11:22,185 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [409 Valid, 733 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:11:22,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4500 states. [2022-11-02 20:11:22,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4500 to 3412. [2022-11-02 20:11:22,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3412 states, 3411 states have (on average 1.612723541483436) internal successors, (5501), 3411 states have internal predecessors, (5501), 0 states have call successors, (0), 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 20:11:22,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3412 states to 3412 states and 5501 transitions. [2022-11-02 20:11:22,457 INFO L78 Accepts]: Start accepts. Automaton has 3412 states and 5501 transitions. Word has length 75 [2022-11-02 20:11:22,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:11:22,458 INFO L495 AbstractCegarLoop]: Abstraction has 3412 states and 5501 transitions. [2022-11-02 20:11:22,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 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 20:11:22,458 INFO L276 IsEmpty]: Start isEmpty. Operand 3412 states and 5501 transitions. [2022-11-02 20:11:22,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-02 20:11:22,460 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:11:22,461 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:11:22,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-02 20:11:22,461 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:11:22,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:11:22,462 INFO L85 PathProgramCache]: Analyzing trace with hash 915332421, now seen corresponding path program 1 times [2022-11-02 20:11:22,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:11:22,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134497527] [2022-11-02 20:11:22,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:11:22,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:11:22,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:11:22,541 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 20:11:22,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:11:22,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134497527] [2022-11-02 20:11:22,541 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134497527] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:11:22,542 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:11:22,542 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:11:22,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646331077] [2022-11-02 20:11:22,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:11:22,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:11:22,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:11:22,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:11:22,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:11:22,544 INFO L87 Difference]: Start difference. First operand 3412 states and 5501 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 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 20:11:22,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:11:22,815 INFO L93 Difference]: Finished difference Result 7762 states and 12522 transitions. [2022-11-02 20:11:22,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:11:22,816 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 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 76 [2022-11-02 20:11:22,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:11:22,833 INFO L225 Difference]: With dead ends: 7762 [2022-11-02 20:11:22,833 INFO L226 Difference]: Without dead ends: 5340 [2022-11-02 20:11:22,837 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 20:11:22,837 INFO L413 NwaCegarLoop]: 253 mSDtfsCounter, 110 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 443 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:11:22,838 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 443 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:11:22,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5340 states. [2022-11-02 20:11:23,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5340 to 5338. [2022-11-02 20:11:23,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5338 states, 5337 states have (on average 1.6001498969458496) internal successors, (8540), 5337 states have internal predecessors, (8540), 0 states have call successors, (0), 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 20:11:23,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5338 states to 5338 states and 8540 transitions. [2022-11-02 20:11:23,152 INFO L78 Accepts]: Start accepts. Automaton has 5338 states and 8540 transitions. Word has length 76 [2022-11-02 20:11:23,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:11:23,152 INFO L495 AbstractCegarLoop]: Abstraction has 5338 states and 8540 transitions. [2022-11-02 20:11:23,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 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 20:11:23,152 INFO L276 IsEmpty]: Start isEmpty. Operand 5338 states and 8540 transitions. [2022-11-02 20:11:23,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-02 20:11:23,154 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:11:23,154 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:11:23,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-02 20:11:23,155 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:11:23,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:11:23,155 INFO L85 PathProgramCache]: Analyzing trace with hash -318395451, now seen corresponding path program 1 times [2022-11-02 20:11:23,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:11:23,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406800699] [2022-11-02 20:11:23,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:11:23,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:11:23,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:11:23,216 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 20:11:23,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:11:23,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406800699] [2022-11-02 20:11:23,216 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406800699] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:11:23,217 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:11:23,217 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:11:23,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102410669] [2022-11-02 20:11:23,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:11:23,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:11:23,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:11:23,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:11:23,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:11:23,219 INFO L87 Difference]: Start difference. First operand 5338 states and 8540 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 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 20:11:23,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:11:23,595 INFO L93 Difference]: Finished difference Result 11658 states and 18702 transitions. [2022-11-02 20:11:23,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:11:23,596 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 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 76 [2022-11-02 20:11:23,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:11:23,642 INFO L225 Difference]: With dead ends: 11658 [2022-11-02 20:11:23,642 INFO L226 Difference]: Without dead ends: 7904 [2022-11-02 20:11:23,647 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 20:11:23,648 INFO L413 NwaCegarLoop]: 288 mSDtfsCounter, 116 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 477 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:11:23,649 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 477 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:11:23,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7904 states. [2022-11-02 20:11:24,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7904 to 7902. [2022-11-02 20:11:24,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7902 states, 7901 states have (on average 1.5919503860270852) internal successors, (12578), 7901 states have internal predecessors, (12578), 0 states have call successors, (0), 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 20:11:24,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7902 states to 7902 states and 12578 transitions. [2022-11-02 20:11:24,252 INFO L78 Accepts]: Start accepts. Automaton has 7902 states and 12578 transitions. Word has length 76 [2022-11-02 20:11:24,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:11:24,253 INFO L495 AbstractCegarLoop]: Abstraction has 7902 states and 12578 transitions. [2022-11-02 20:11:24,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 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 20:11:24,254 INFO L276 IsEmpty]: Start isEmpty. Operand 7902 states and 12578 transitions. [2022-11-02 20:11:24,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-02 20:11:24,256 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:11:24,256 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:11:24,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-02 20:11:24,256 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:11:24,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:11:24,257 INFO L85 PathProgramCache]: Analyzing trace with hash -116701437, now seen corresponding path program 1 times [2022-11-02 20:11:24,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:11:24,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919611520] [2022-11-02 20:11:24,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:11:24,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:11:24,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:11:24,311 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 20:11:24,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:11:24,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919611520] [2022-11-02 20:11:24,312 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919611520] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:11:24,312 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:11:24,312 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:11:24,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429531333] [2022-11-02 20:11:24,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:11:24,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:11:24,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:11:24,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:11:24,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:11:24,314 INFO L87 Difference]: Start difference. First operand 7902 states and 12578 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 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 20:11:24,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:11:24,903 INFO L93 Difference]: Finished difference Result 17511 states and 28108 transitions. [2022-11-02 20:11:24,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:11:24,903 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 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 76 [2022-11-02 20:11:24,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:11:24,932 INFO L225 Difference]: With dead ends: 17511 [2022-11-02 20:11:24,933 INFO L226 Difference]: Without dead ends: 11763 [2022-11-02 20:11:24,941 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 20:11:24,942 INFO L413 NwaCegarLoop]: 315 mSDtfsCounter, 122 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 503 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:11:24,942 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 503 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:11:24,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11763 states. [2022-11-02 20:11:25,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11763 to 11761. [2022-11-02 20:11:25,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11761 states, 11760 states have (on average 1.5872448979591838) internal successors, (18666), 11760 states have internal predecessors, (18666), 0 states have call successors, (0), 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 20:11:25,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11761 states to 11761 states and 18666 transitions. [2022-11-02 20:11:25,731 INFO L78 Accepts]: Start accepts. Automaton has 11761 states and 18666 transitions. Word has length 76 [2022-11-02 20:11:25,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:11:25,731 INFO L495 AbstractCegarLoop]: Abstraction has 11761 states and 18666 transitions. [2022-11-02 20:11:25,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 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 20:11:25,732 INFO L276 IsEmpty]: Start isEmpty. Operand 11761 states and 18666 transitions. [2022-11-02 20:11:25,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-02 20:11:25,733 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:11:25,733 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:11:25,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-02 20:11:25,733 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:11:25,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:11:25,734 INFO L85 PathProgramCache]: Analyzing trace with hash 411123109, now seen corresponding path program 1 times [2022-11-02 20:11:25,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:11:25,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662332269] [2022-11-02 20:11:25,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:11:25,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:11:25,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:11:25,959 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 20:11:25,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:11:25,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662332269] [2022-11-02 20:11:25,959 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662332269] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:11:25,960 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:11:25,960 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:11:25,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799025098] [2022-11-02 20:11:25,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:11:25,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:11:25,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:11:25,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:11:25,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:11:25,962 INFO L87 Difference]: Start difference. First operand 11761 states and 18666 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:11:26,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:11:26,822 INFO L93 Difference]: Finished difference Result 23438 states and 37217 transitions. [2022-11-02 20:11:26,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:11:26,823 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-11-02 20:11:26,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:11:26,850 INFO L225 Difference]: With dead ends: 23438 [2022-11-02 20:11:26,851 INFO L226 Difference]: Without dead ends: 11763 [2022-11-02 20:11:26,862 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:11:26,862 INFO L413 NwaCegarLoop]: 218 mSDtfsCounter, 301 mSDsluCounter, 374 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 301 SdHoareTripleChecker+Valid, 592 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:11:26,863 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [301 Valid, 592 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:11:26,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11763 states. [2022-11-02 20:11:27,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11763 to 11761. [2022-11-02 20:11:27,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11761 states, 11760 states have (on average 1.5766156462585035) internal successors, (18541), 11760 states have internal predecessors, (18541), 0 states have call successors, (0), 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 20:11:27,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11761 states to 11761 states and 18541 transitions. [2022-11-02 20:11:27,611 INFO L78 Accepts]: Start accepts. Automaton has 11761 states and 18541 transitions. Word has length 77 [2022-11-02 20:11:27,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:11:27,611 INFO L495 AbstractCegarLoop]: Abstraction has 11761 states and 18541 transitions. [2022-11-02 20:11:27,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:11:27,612 INFO L276 IsEmpty]: Start isEmpty. Operand 11761 states and 18541 transitions. [2022-11-02 20:11:27,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-02 20:11:27,612 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:11:27,613 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:11:27,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-02 20:11:27,613 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:11:27,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:11:27,614 INFO L85 PathProgramCache]: Analyzing trace with hash 224831213, now seen corresponding path program 1 times [2022-11-02 20:11:27,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:11:27,614 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238511646] [2022-11-02 20:11:27,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:11:27,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:11:27,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:11:27,799 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 20:11:27,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:11:27,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238511646] [2022-11-02 20:11:27,800 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238511646] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:11:27,800 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:11:27,800 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:11:27,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705601318] [2022-11-02 20:11:27,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:11:27,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:11:27,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:11:27,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:11:27,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:11:27,802 INFO L87 Difference]: Start difference. First operand 11761 states and 18541 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 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 20:11:28,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:11:28,951 INFO L93 Difference]: Finished difference Result 33682 states and 53251 transitions. [2022-11-02 20:11:28,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:11:28,951 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2022-11-02 20:11:28,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:11:29,006 INFO L225 Difference]: With dead ends: 33682 [2022-11-02 20:11:29,007 INFO L226 Difference]: Without dead ends: 22007 [2022-11-02 20:11:29,111 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:11:29,111 INFO L413 NwaCegarLoop]: 210 mSDtfsCounter, 187 mSDsluCounter, 576 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 786 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:11:29,112 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [187 Valid, 786 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:11:29,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22007 states. [2022-11-02 20:11:30,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22007 to 22005. [2022-11-02 20:11:30,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22005 states, 22004 states have (on average 1.5649881839665516) internal successors, (34436), 22004 states have internal predecessors, (34436), 0 states have call successors, (0), 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 20:11:30,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22005 states to 22005 states and 34436 transitions. [2022-11-02 20:11:30,800 INFO L78 Accepts]: Start accepts. Automaton has 22005 states and 34436 transitions. Word has length 80 [2022-11-02 20:11:30,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:11:30,801 INFO L495 AbstractCegarLoop]: Abstraction has 22005 states and 34436 transitions. [2022-11-02 20:11:30,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 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 20:11:30,801 INFO L276 IsEmpty]: Start isEmpty. Operand 22005 states and 34436 transitions. [2022-11-02 20:11:30,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-11-02 20:11:30,802 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:11:30,802 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:11:30,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-02 20:11:30,803 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:11:30,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:11:30,803 INFO L85 PathProgramCache]: Analyzing trace with hash -2048742578, now seen corresponding path program 1 times [2022-11-02 20:11:30,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:11:30,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57318828] [2022-11-02 20:11:30,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:11:30,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:11:30,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:11:31,068 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 20:11:31,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:11:31,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57318828] [2022-11-02 20:11:31,068 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57318828] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:11:31,069 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:11:31,069 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:11:31,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352969000] [2022-11-02 20:11:31,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:11:31,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:11:31,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:11:31,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:11:31,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:11:31,071 INFO L87 Difference]: Start difference. First operand 22005 states and 34436 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 0 states have call successors, (0), 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 20:11:33,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:11:33,116 INFO L93 Difference]: Finished difference Result 42912 states and 66453 transitions. [2022-11-02 20:11:33,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:11:33,121 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 0 states have call successors, (0), 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 81 [2022-11-02 20:11:33,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:11:33,330 INFO L225 Difference]: With dead ends: 42912 [2022-11-02 20:11:33,330 INFO L226 Difference]: Without dead ends: 42910 [2022-11-02 20:11:33,338 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:11:33,340 INFO L413 NwaCegarLoop]: 290 mSDtfsCounter, 368 mSDsluCounter, 660 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 368 SdHoareTripleChecker+Valid, 950 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:11:33,341 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [368 Valid, 950 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:11:33,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42910 states. [2022-11-02 20:11:34,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42910 to 23091. [2022-11-02 20:11:34,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23091 states, 23090 states have (on average 1.5380251190991772) internal successors, (35513), 23090 states have internal predecessors, (35513), 0 states have call successors, (0), 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 20:11:34,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23091 states to 23091 states and 35513 transitions. [2022-11-02 20:11:34,898 INFO L78 Accepts]: Start accepts. Automaton has 23091 states and 35513 transitions. Word has length 81 [2022-11-02 20:11:34,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:11:34,899 INFO L495 AbstractCegarLoop]: Abstraction has 23091 states and 35513 transitions. [2022-11-02 20:11:34,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 0 states have call successors, (0), 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 20:11:34,899 INFO L276 IsEmpty]: Start isEmpty. Operand 23091 states and 35513 transitions. [2022-11-02 20:11:34,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-02 20:11:34,902 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:11:34,902 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 20:11:34,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-02 20:11:34,903 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:11:34,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:11:34,903 INFO L85 PathProgramCache]: Analyzing trace with hash -601727771, now seen corresponding path program 1 times [2022-11-02 20:11:34,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:11:34,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133148735] [2022-11-02 20:11:34,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:11:34,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:11:34,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:11:35,079 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-02 20:11:35,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:11:35,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133148735] [2022-11-02 20:11:35,082 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133148735] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:11:35,082 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:11:35,082 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:11:35,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490881380] [2022-11-02 20:11:35,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:11:35,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:11:35,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:11:35,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:11:35,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:11:35,084 INFO L87 Difference]: Start difference. First operand 23091 states and 35513 transitions. Second operand has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 0 states have call successors, (0), 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 20:11:37,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:11:37,412 INFO L93 Difference]: Finished difference Result 56431 states and 87041 transitions. [2022-11-02 20:11:37,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:11:37,413 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 0 states have call successors, (0), 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 109 [2022-11-02 20:11:37,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:11:37,492 INFO L225 Difference]: With dead ends: 56431 [2022-11-02 20:11:37,492 INFO L226 Difference]: Without dead ends: 45489 [2022-11-02 20:11:37,508 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:11:37,509 INFO L413 NwaCegarLoop]: 351 mSDtfsCounter, 522 mSDsluCounter, 640 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 522 SdHoareTripleChecker+Valid, 991 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:11:37,509 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [522 Valid, 991 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:11:37,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45489 states. [2022-11-02 20:11:39,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45489 to 35483. [2022-11-02 20:11:39,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35483 states, 35482 states have (on average 1.536525562256919) internal successors, (54519), 35482 states have internal predecessors, (54519), 0 states have call successors, (0), 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 20:11:39,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35483 states to 35483 states and 54519 transitions. [2022-11-02 20:11:39,899 INFO L78 Accepts]: Start accepts. Automaton has 35483 states and 54519 transitions. Word has length 109 [2022-11-02 20:11:39,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:11:39,900 INFO L495 AbstractCegarLoop]: Abstraction has 35483 states and 54519 transitions. [2022-11-02 20:11:39,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 0 states have call successors, (0), 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 20:11:39,901 INFO L276 IsEmpty]: Start isEmpty. Operand 35483 states and 54519 transitions. [2022-11-02 20:11:39,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-02 20:11:39,903 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:11:39,903 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 20:11:39,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-02 20:11:39,904 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:11:39,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:11:39,905 INFO L85 PathProgramCache]: Analyzing trace with hash -1835455643, now seen corresponding path program 1 times [2022-11-02 20:11:39,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:11:39,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192326929] [2022-11-02 20:11:39,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:11:39,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:11:39,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:11:40,061 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-02 20:11:40,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:11:40,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192326929] [2022-11-02 20:11:40,062 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192326929] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:11:40,062 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:11:40,062 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:11:40,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961697957] [2022-11-02 20:11:40,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:11:40,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:11:40,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:11:40,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:11:40,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:11:40,064 INFO L87 Difference]: Start difference. First operand 35483 states and 54519 transitions. Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:11:42,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:11:42,418 INFO L93 Difference]: Finished difference Result 60807 states and 93801 transitions. [2022-11-02 20:11:42,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:11:42,419 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2022-11-02 20:11:42,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:11:42,620 INFO L225 Difference]: With dead ends: 60807 [2022-11-02 20:11:42,620 INFO L226 Difference]: Without dead ends: 49865 [2022-11-02 20:11:42,638 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:11:42,639 INFO L413 NwaCegarLoop]: 353 mSDtfsCounter, 522 mSDsluCounter, 634 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 522 SdHoareTripleChecker+Valid, 987 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:11:42,639 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [522 Valid, 987 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:11:42,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49865 states. [2022-11-02 20:11:45,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49865 to 48067. [2022-11-02 20:11:45,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48067 states, 48066 states have (on average 1.5370324137644074) internal successors, (73879), 48066 states have internal predecessors, (73879), 0 states have call successors, (0), 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 20:11:45,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48067 states to 48067 states and 73879 transitions. [2022-11-02 20:11:45,517 INFO L78 Accepts]: Start accepts. Automaton has 48067 states and 73879 transitions. Word has length 109 [2022-11-02 20:11:45,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:11:45,518 INFO L495 AbstractCegarLoop]: Abstraction has 48067 states and 73879 transitions. [2022-11-02 20:11:45,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:11:45,518 INFO L276 IsEmpty]: Start isEmpty. Operand 48067 states and 73879 transitions. [2022-11-02 20:11:45,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-02 20:11:45,520 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:11:45,520 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 20:11:45,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-02 20:11:45,521 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:11:45,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:11:45,521 INFO L85 PathProgramCache]: Analyzing trace with hash -1633761629, now seen corresponding path program 1 times [2022-11-02 20:11:45,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:11:45,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6176244] [2022-11-02 20:11:45,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:11:45,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:11:45,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:11:45,593 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 20:11:45,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:11:45,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6176244] [2022-11-02 20:11:45,593 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6176244] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:11:45,593 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:11:45,594 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:11:45,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832237925] [2022-11-02 20:11:45,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:11:45,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:11:45,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:11:45,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:11:45,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:11:45,595 INFO L87 Difference]: Start difference. First operand 48067 states and 73879 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 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 20:11:50,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:11:50,121 INFO L93 Difference]: Finished difference Result 100238 states and 154694 transitions. [2022-11-02 20:11:50,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:11:50,121 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 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 109 [2022-11-02 20:11:50,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:11:50,256 INFO L225 Difference]: With dead ends: 100238 [2022-11-02 20:11:50,256 INFO L226 Difference]: Without dead ends: 89036 [2022-11-02 20:11:50,276 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 20:11:50,277 INFO L413 NwaCegarLoop]: 219 mSDtfsCounter, 99 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 405 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:11:50,277 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 405 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:11:50,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89036 states. [2022-11-02 20:11:54,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89036 to 88919. [2022-11-02 20:11:54,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88919 states, 88918 states have (on average 1.5396994984142693) internal successors, (136907), 88918 states have internal predecessors, (136907), 0 states have call successors, (0), 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 20:11:55,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88919 states to 88919 states and 136907 transitions. [2022-11-02 20:11:55,038 INFO L78 Accepts]: Start accepts. Automaton has 88919 states and 136907 transitions. Word has length 109 [2022-11-02 20:11:55,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:11:55,039 INFO L495 AbstractCegarLoop]: Abstraction has 88919 states and 136907 transitions. [2022-11-02 20:11:55,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 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 20:11:55,039 INFO L276 IsEmpty]: Start isEmpty. Operand 88919 states and 136907 transitions. [2022-11-02 20:11:55,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-11-02 20:11:55,042 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:11:55,042 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 20:11:55,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-02 20:11:55,042 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:11:55,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:11:55,043 INFO L85 PathProgramCache]: Analyzing trace with hash -1592792316, now seen corresponding path program 1 times [2022-11-02 20:11:55,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:11:55,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041592778] [2022-11-02 20:11:55,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:11:55,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:11:55,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:11:55,113 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:11:55,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:11:55,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041592778] [2022-11-02 20:11:55,113 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041592778] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:11:55,113 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:11:55,114 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:11:55,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878079470] [2022-11-02 20:11:55,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:11:55,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:11:55,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:11:55,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:11:55,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:11:55,115 INFO L87 Difference]: Start difference. First operand 88919 states and 136907 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)