./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/pals_floodmax.4_overflow.ufo.UNBOUNDED.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a 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_5d104f59-7a09-419b-b7e3-6322670f6a09/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d104f59-7a09-419b-b7e3-6322670f6a09/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d104f59-7a09-419b-b7e3-6322670f6a09/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d104f59-7a09-419b-b7e3-6322670f6a09/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/pals_floodmax.4_overflow.ufo.UNBOUNDED.pals.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d104f59-7a09-419b-b7e3-6322670f6a09/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d104f59-7a09-419b-b7e3-6322670f6a09/bin/uautomizer-ZsLfNo2U6R --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 a476129b1600ab93482417c4ebe15d373b743970a04c4bdd8ca1478cbccf2de7 --- 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-38b53e6 [2022-11-25 18:27:09,638 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 18:27:09,641 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 18:27:09,687 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 18:27:09,688 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 18:27:09,692 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 18:27:09,695 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 18:27:09,697 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 18:27:09,698 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 18:27:09,699 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 18:27:09,700 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 18:27:09,702 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 18:27:09,702 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 18:27:09,705 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 18:27:09,707 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 18:27:09,712 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 18:27:09,714 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 18:27:09,720 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 18:27:09,723 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 18:27:09,731 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 18:27:09,734 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 18:27:09,736 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 18:27:09,737 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 18:27:09,738 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 18:27:09,742 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 18:27:09,742 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 18:27:09,743 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 18:27:09,744 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 18:27:09,744 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 18:27:09,745 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 18:27:09,746 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 18:27:09,747 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 18:27:09,753 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 18:27:09,756 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 18:27:09,757 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 18:27:09,758 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 18:27:09,758 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 18:27:09,759 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 18:27:09,759 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 18:27:09,763 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 18:27:09,764 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 18:27:09,765 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d104f59-7a09-419b-b7e3-6322670f6a09/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-25 18:27:09,802 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 18:27:09,803 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 18:27:09,803 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 18:27:09,803 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 18:27:09,804 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 18:27:09,804 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 18:27:09,805 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 18:27:09,806 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 18:27:09,806 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 18:27:09,806 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 18:27:09,806 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 18:27:09,807 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 18:27:09,807 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 18:27:09,807 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 18:27:09,807 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 18:27:09,808 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 18:27:09,808 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 18:27:09,808 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 18:27:09,808 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 18:27:09,808 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 18:27:09,809 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 18:27:09,809 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 18:27:09,809 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 18:27:09,809 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 18:27:09,810 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 18:27:09,810 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 18:27:09,810 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 18:27:09,810 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 18:27:09,811 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 18:27:09,811 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 18:27:09,811 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 18:27:09,811 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 18:27:09,812 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 18:27:09,812 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 18:27:09,812 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_5d104f59-7a09-419b-b7e3-6322670f6a09/bin/uautomizer-ZsLfNo2U6R/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d104f59-7a09-419b-b7e3-6322670f6a09/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a476129b1600ab93482417c4ebe15d373b743970a04c4bdd8ca1478cbccf2de7 [2022-11-25 18:27:10,146 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 18:27:10,181 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 18:27:10,184 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 18:27:10,185 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 18:27:10,186 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 18:27:10,187 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d104f59-7a09-419b-b7e3-6322670f6a09/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/seq-mthreaded/pals_floodmax.4_overflow.ufo.UNBOUNDED.pals.c [2022-11-25 18:27:13,303 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 18:27:13,550 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 18:27:13,551 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d104f59-7a09-419b-b7e3-6322670f6a09/sv-benchmarks/c/seq-mthreaded/pals_floodmax.4_overflow.ufo.UNBOUNDED.pals.c [2022-11-25 18:27:13,571 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d104f59-7a09-419b-b7e3-6322670f6a09/bin/uautomizer-ZsLfNo2U6R/data/43dfb622e/831a665a25094005bb31fd2720f8ee7e/FLAG2aa0df636 [2022-11-25 18:27:13,587 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d104f59-7a09-419b-b7e3-6322670f6a09/bin/uautomizer-ZsLfNo2U6R/data/43dfb622e/831a665a25094005bb31fd2720f8ee7e [2022-11-25 18:27:13,589 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 18:27:13,591 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 18:27:13,592 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 18:27:13,593 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 18:27:13,596 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 18:27:13,597 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:27:13" (1/1) ... [2022-11-25 18:27:13,598 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c337cd5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:27:13, skipping insertion in model container [2022-11-25 18:27:13,598 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:27:13" (1/1) ... [2022-11-25 18:27:13,607 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 18:27:13,650 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 18:27:13,992 WARN L237 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_5d104f59-7a09-419b-b7e3-6322670f6a09/sv-benchmarks/c/seq-mthreaded/pals_floodmax.4_overflow.ufo.UNBOUNDED.pals.c[28307,28320] [2022-11-25 18:27:13,997 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 18:27:14,012 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 18:27:14,143 WARN L237 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_5d104f59-7a09-419b-b7e3-6322670f6a09/sv-benchmarks/c/seq-mthreaded/pals_floodmax.4_overflow.ufo.UNBOUNDED.pals.c[28307,28320] [2022-11-25 18:27:14,143 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 18:27:14,165 INFO L208 MainTranslator]: Completed translation [2022-11-25 18:27:14,165 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:27:14 WrapperNode [2022-11-25 18:27:14,166 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 18:27:14,167 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 18:27:14,167 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 18:27:14,167 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 18:27:14,174 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:27:14" (1/1) ... [2022-11-25 18:27:14,188 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:27:14" (1/1) ... [2022-11-25 18:27:14,279 INFO L138 Inliner]: procedures = 24, calls = 15, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 896 [2022-11-25 18:27:14,280 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 18:27:14,281 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 18:27:14,281 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 18:27:14,281 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 18:27:14,291 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:27:14" (1/1) ... [2022-11-25 18:27:14,292 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:27:14" (1/1) ... [2022-11-25 18:27:14,296 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:27:14" (1/1) ... [2022-11-25 18:27:14,296 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:27:14" (1/1) ... [2022-11-25 18:27:14,309 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:27:14" (1/1) ... [2022-11-25 18:27:14,320 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:27:14" (1/1) ... [2022-11-25 18:27:14,323 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:27:14" (1/1) ... [2022-11-25 18:27:14,326 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:27:14" (1/1) ... [2022-11-25 18:27:14,332 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 18:27:14,333 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 18:27:14,333 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 18:27:14,333 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 18:27:14,334 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:27:14" (1/1) ... [2022-11-25 18:27:14,343 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 18:27:14,355 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d104f59-7a09-419b-b7e3-6322670f6a09/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:27:14,373 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d104f59-7a09-419b-b7e3-6322670f6a09/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 18:27:14,403 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d104f59-7a09-419b-b7e3-6322670f6a09/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 18:27:14,426 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 18:27:14,427 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 18:27:14,427 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 18:27:14,427 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 18:27:14,589 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 18:27:14,591 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 18:27:15,706 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 18:27:15,717 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 18:27:15,717 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-25 18:27:15,724 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:27:15 BoogieIcfgContainer [2022-11-25 18:27:15,724 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 18:27:15,727 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 18:27:15,727 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 18:27:15,731 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 18:27:15,731 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 06:27:13" (1/3) ... [2022-11-25 18:27:15,732 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a275d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:27:15, skipping insertion in model container [2022-11-25 18:27:15,732 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:27:14" (2/3) ... [2022-11-25 18:27:15,732 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a275d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:27:15, skipping insertion in model container [2022-11-25 18:27:15,733 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:27:15" (3/3) ... [2022-11-25 18:27:15,734 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_floodmax.4_overflow.ufo.UNBOUNDED.pals.c [2022-11-25 18:27:15,757 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 18:27:15,757 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-25 18:27:15,843 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 18:27:15,851 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;@1b5c0182, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 18:27:15,851 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-25 18:27:15,858 INFO L276 IsEmpty]: Start isEmpty. Operand has 280 states, 278 states have (on average 1.8345323741007193) internal successors, (510), 279 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:27:15,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-25 18:27:15,871 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:27:15,875 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] [2022-11-25 18:27:15,876 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:27:15,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:27:15,883 INFO L85 PathProgramCache]: Analyzing trace with hash -875885192, now seen corresponding path program 1 times [2022-11-25 18:27:15,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:27:15,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911677990] [2022-11-25 18:27:15,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:27:15,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:27:16,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:27:16,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:27:16,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:27:16,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911677990] [2022-11-25 18:27:16,341 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911677990] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:27:16,342 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:27:16,342 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 18:27:16,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798554790] [2022-11-25 18:27:16,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:27:16,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-25 18:27:16,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:27:16,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-25 18:27:16,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 18:27:16,400 INFO L87 Difference]: Start difference. First operand has 280 states, 278 states have (on average 1.8345323741007193) internal successors, (510), 279 states have internal predecessors, (510), 0 states have call successors, (0), 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 38.5) internal successors, (77), 2 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) [2022-11-25 18:27:16,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:27:16,475 INFO L93 Difference]: Finished difference Result 365 states and 663 transitions. [2022-11-25 18:27:16,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 18:27:16,477 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 38.5) internal successors, (77), 2 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 [2022-11-25 18:27:16,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:27:16,489 INFO L225 Difference]: With dead ends: 365 [2022-11-25 18:27:16,490 INFO L226 Difference]: Without dead ends: 276 [2022-11-25 18:27:16,493 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 [2022-11-25 18:27:16,497 INFO L413 NwaCegarLoop]: 503 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, 503 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 [2022-11-25 18:27:16,498 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 503 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 18:27:16,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2022-11-25 18:27:16,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 276. [2022-11-25 18:27:16,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 275 states have (on average 1.829090909090909) internal successors, (503), 275 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:27:16,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 503 transitions. [2022-11-25 18:27:16,549 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 503 transitions. Word has length 77 [2022-11-25 18:27:16,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:27:16,550 INFO L495 AbstractCegarLoop]: Abstraction has 276 states and 503 transitions. [2022-11-25 18:27:16,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 38.5) internal successors, (77), 2 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) [2022-11-25 18:27:16,551 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 503 transitions. [2022-11-25 18:27:16,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-25 18:27:16,554 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:27:16,554 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] [2022-11-25 18:27:16,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 18:27:16,555 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:27:16,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:27:16,555 INFO L85 PathProgramCache]: Analyzing trace with hash -1009898698, now seen corresponding path program 1 times [2022-11-25 18:27:16,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:27:16,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431300370] [2022-11-25 18:27:16,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:27:16,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:27:16,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:27:16,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:27:16,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:27:16,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431300370] [2022-11-25 18:27:16,965 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431300370] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:27:16,965 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:27:16,965 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 18:27:16,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953842210] [2022-11-25 18:27:16,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:27:16,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 18:27:16,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:27:16,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 18:27:16,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 18:27:16,969 INFO L87 Difference]: Start difference. First operand 276 states and 503 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) [2022-11-25 18:27:17,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:27:17,118 INFO L93 Difference]: Finished difference Result 364 states and 656 transitions. [2022-11-25 18:27:17,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 18:27:17,120 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 [2022-11-25 18:27:17,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:27:17,124 INFO L225 Difference]: With dead ends: 364 [2022-11-25 18:27:17,124 INFO L226 Difference]: Without dead ends: 276 [2022-11-25 18:27:17,129 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 [2022-11-25 18:27:17,132 INFO L413 NwaCegarLoop]: 501 mSDtfsCounter, 3 mSDsluCounter, 1458 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1959 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 18:27:17,133 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1959 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 18:27:17,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2022-11-25 18:27:17,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 276. [2022-11-25 18:27:17,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 275 states have (on average 1.6763636363636363) internal successors, (461), 275 states have internal predecessors, (461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:27:17,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 461 transitions. [2022-11-25 18:27:17,154 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 461 transitions. Word has length 77 [2022-11-25 18:27:17,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:27:17,154 INFO L495 AbstractCegarLoop]: Abstraction has 276 states and 461 transitions. [2022-11-25 18:27:17,155 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) [2022-11-25 18:27:17,160 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 461 transitions. [2022-11-25 18:27:17,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-11-25 18:27:17,171 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:27:17,172 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:27:17,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 18:27:17,172 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:27:17,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:27:17,173 INFO L85 PathProgramCache]: Analyzing trace with hash 1489902654, now seen corresponding path program 1 times [2022-11-25 18:27:17,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:27:17,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861552554] [2022-11-25 18:27:17,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:27:17,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:27:17,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:27:17,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:27:17,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:27:17,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861552554] [2022-11-25 18:27:17,416 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861552554] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:27:17,416 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:27:17,416 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 18:27:17,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401943090] [2022-11-25 18:27:17,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:27:17,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:27:17,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:27:17,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:27:17,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:27:17,419 INFO L87 Difference]: Start difference. First operand 276 states and 461 transitions. Second operand has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:27:17,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:27:17,473 INFO L93 Difference]: Finished difference Result 433 states and 738 transitions. [2022-11-25 18:27:17,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:27:17,473 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 118 [2022-11-25 18:27:17,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:27:17,477 INFO L225 Difference]: With dead ends: 433 [2022-11-25 18:27:17,477 INFO L226 Difference]: Without dead ends: 349 [2022-11-25 18:27:17,483 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 [2022-11-25 18:27:17,488 INFO L413 NwaCegarLoop]: 567 mSDtfsCounter, 120 mSDsluCounter, 410 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 977 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 18:27:17,489 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 977 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 18:27:17,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2022-11-25 18:27:17,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 347. [2022-11-25 18:27:17,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 346 states have (on average 1.6849710982658959) internal successors, (583), 346 states have internal predecessors, (583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:27:17,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 583 transitions. [2022-11-25 18:27:17,519 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 583 transitions. Word has length 118 [2022-11-25 18:27:17,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:27:17,519 INFO L495 AbstractCegarLoop]: Abstraction has 347 states and 583 transitions. [2022-11-25 18:27:17,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:27:17,520 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 583 transitions. [2022-11-25 18:27:17,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-11-25 18:27:17,521 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:27:17,521 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:27:17,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-25 18:27:17,522 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:27:17,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:27:17,522 INFO L85 PathProgramCache]: Analyzing trace with hash -1238623676, now seen corresponding path program 1 times [2022-11-25 18:27:17,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:27:17,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741635208] [2022-11-25 18:27:17,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:27:17,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:27:17,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:27:17,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:27:17,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:27:17,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741635208] [2022-11-25 18:27:17,661 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741635208] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:27:17,661 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:27:17,661 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 18:27:17,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221677685] [2022-11-25 18:27:17,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:27:17,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:27:17,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:27:17,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:27:17,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:27:17,663 INFO L87 Difference]: Start difference. First operand 347 states and 583 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:27:17,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:27:17,697 INFO L93 Difference]: Finished difference Result 503 states and 858 transitions. [2022-11-25 18:27:17,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:27:17,698 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 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 121 [2022-11-25 18:27:17,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:27:17,700 INFO L225 Difference]: With dead ends: 503 [2022-11-25 18:27:17,700 INFO L226 Difference]: Without dead ends: 419 [2022-11-25 18:27:17,701 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 [2022-11-25 18:27:17,702 INFO L413 NwaCegarLoop]: 572 mSDtfsCounter, 129 mSDsluCounter, 439 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 1011 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 [2022-11-25 18:27:17,702 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 1011 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 18:27:17,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2022-11-25 18:27:17,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 417. [2022-11-25 18:27:17,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 417 states, 416 states have (on average 1.6971153846153846) internal successors, (706), 416 states have internal predecessors, (706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:27:17,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 706 transitions. [2022-11-25 18:27:17,719 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 706 transitions. Word has length 121 [2022-11-25 18:27:17,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:27:17,720 INFO L495 AbstractCegarLoop]: Abstraction has 417 states and 706 transitions. [2022-11-25 18:27:17,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:27:17,720 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 706 transitions. [2022-11-25 18:27:17,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-11-25 18:27:17,722 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:27:17,722 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:27:17,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-25 18:27:17,722 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:27:17,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:27:17,723 INFO L85 PathProgramCache]: Analyzing trace with hash 942583131, now seen corresponding path program 1 times [2022-11-25 18:27:17,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:27:17,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332247003] [2022-11-25 18:27:17,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:27:17,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:27:17,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:27:17,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:27:17,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:27:17,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332247003] [2022-11-25 18:27:17,876 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332247003] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:27:17,876 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:27:17,876 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 18:27:17,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290007317] [2022-11-25 18:27:17,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:27:17,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:27:17,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:27:17,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:27:17,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:27:17,879 INFO L87 Difference]: Start difference. First operand 417 states and 706 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:27:17,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:27:17,923 INFO L93 Difference]: Finished difference Result 836 states and 1439 transitions. [2022-11-25 18:27:17,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:27:17,924 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 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 121 [2022-11-25 18:27:17,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:27:17,927 INFO L225 Difference]: With dead ends: 836 [2022-11-25 18:27:17,928 INFO L226 Difference]: Without dead ends: 613 [2022-11-25 18:27:17,928 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 [2022-11-25 18:27:17,929 INFO L413 NwaCegarLoop]: 569 mSDtfsCounter, 121 mSDsluCounter, 419 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 988 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 18:27:17,930 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 988 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 18:27:17,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 613 states. [2022-11-25 18:27:17,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 613 to 611. [2022-11-25 18:27:17,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 611 states, 610 states have (on average 1.7098360655737705) internal successors, (1043), 610 states have internal predecessors, (1043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:27:17,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 1043 transitions. [2022-11-25 18:27:17,958 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 1043 transitions. Word has length 121 [2022-11-25 18:27:17,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:27:17,959 INFO L495 AbstractCegarLoop]: Abstraction has 611 states and 1043 transitions. [2022-11-25 18:27:17,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:27:17,959 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 1043 transitions. [2022-11-25 18:27:17,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-11-25 18:27:17,961 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:27:17,961 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:27:17,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-25 18:27:17,961 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:27:17,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:27:17,962 INFO L85 PathProgramCache]: Analyzing trace with hash -2091470231, now seen corresponding path program 1 times [2022-11-25 18:27:17,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:27:17,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600592730] [2022-11-25 18:27:17,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:27:17,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:27:17,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:27:18,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:27:18,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:27:18,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600592730] [2022-11-25 18:27:18,069 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600592730] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:27:18,069 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:27:18,069 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 18:27:18,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324909897] [2022-11-25 18:27:18,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:27:18,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:27:18,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:27:18,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:27:18,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:27:18,071 INFO L87 Difference]: Start difference. First operand 611 states and 1043 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:27:18,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:27:18,114 INFO L93 Difference]: Finished difference Result 1022 states and 1760 transitions. [2022-11-25 18:27:18,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:27:18,114 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 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 124 [2022-11-25 18:27:18,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:27:18,118 INFO L225 Difference]: With dead ends: 1022 [2022-11-25 18:27:18,118 INFO L226 Difference]: Without dead ends: 799 [2022-11-25 18:27:18,119 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:27:18,120 INFO L413 NwaCegarLoop]: 561 mSDtfsCounter, 122 mSDsluCounter, 440 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 1001 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 [2022-11-25 18:27:18,121 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 1001 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 18:27:18,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 799 states. [2022-11-25 18:27:18,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 799 to 797. [2022-11-25 18:27:18,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 797 states, 796 states have (on average 1.7123115577889447) internal successors, (1363), 796 states have internal predecessors, (1363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:27:18,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 797 states to 797 states and 1363 transitions. [2022-11-25 18:27:18,153 INFO L78 Accepts]: Start accepts. Automaton has 797 states and 1363 transitions. Word has length 124 [2022-11-25 18:27:18,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:27:18,153 INFO L495 AbstractCegarLoop]: Abstraction has 797 states and 1363 transitions. [2022-11-25 18:27:18,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:27:18,154 INFO L276 IsEmpty]: Start isEmpty. Operand 797 states and 1363 transitions. [2022-11-25 18:27:18,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-11-25 18:27:18,156 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:27:18,156 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:27:18,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-25 18:27:18,156 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:27:18,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:27:18,157 INFO L85 PathProgramCache]: Analyzing trace with hash -2013778626, now seen corresponding path program 1 times [2022-11-25 18:27:18,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:27:18,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033424475] [2022-11-25 18:27:18,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:27:18,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:27:18,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:27:18,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:27:18,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:27:18,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033424475] [2022-11-25 18:27:18,292 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033424475] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:27:18,292 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:27:18,293 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 18:27:18,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032064465] [2022-11-25 18:27:18,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:27:18,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:27:18,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:27:18,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:27:18,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:27:18,295 INFO L87 Difference]: Start difference. First operand 797 states and 1363 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:27:18,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:27:18,359 INFO L93 Difference]: Finished difference Result 1908 states and 3288 transitions. [2022-11-25 18:27:18,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:27:18,360 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 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 124 [2022-11-25 18:27:18,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:27:18,366 INFO L225 Difference]: With dead ends: 1908 [2022-11-25 18:27:18,366 INFO L226 Difference]: Without dead ends: 1312 [2022-11-25 18:27:18,367 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 [2022-11-25 18:27:18,370 INFO L413 NwaCegarLoop]: 559 mSDtfsCounter, 114 mSDsluCounter, 420 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 979 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 18:27:18,370 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 979 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 18:27:18,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1312 states. [2022-11-25 18:27:18,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1312 to 1310. [2022-11-25 18:27:18,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1310 states, 1309 states have (on average 1.7104660045836517) internal successors, (2239), 1309 states have internal predecessors, (2239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:27:18,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1310 states to 1310 states and 2239 transitions. [2022-11-25 18:27:18,460 INFO L78 Accepts]: Start accepts. Automaton has 1310 states and 2239 transitions. Word has length 124 [2022-11-25 18:27:18,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:27:18,461 INFO L495 AbstractCegarLoop]: Abstraction has 1310 states and 2239 transitions. [2022-11-25 18:27:18,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:27:18,461 INFO L276 IsEmpty]: Start isEmpty. Operand 1310 states and 2239 transitions. [2022-11-25 18:27:18,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-11-25 18:27:18,463 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:27:18,463 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:27:18,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-25 18:27:18,463 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:27:18,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:27:18,464 INFO L85 PathProgramCache]: Analyzing trace with hash -1950081272, now seen corresponding path program 1 times [2022-11-25 18:27:18,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:27:18,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26252584] [2022-11-25 18:27:18,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:27:18,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:27:18,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:27:18,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:27:18,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:27:18,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26252584] [2022-11-25 18:27:18,590 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26252584] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:27:18,590 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:27:18,590 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 18:27:18,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554162191] [2022-11-25 18:27:18,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:27:18,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:27:18,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:27:18,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:27:18,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:27:18,592 INFO L87 Difference]: Start difference. First operand 1310 states and 2239 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:27:18,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:27:18,678 INFO L93 Difference]: Finished difference Result 2383 states and 4094 transitions. [2022-11-25 18:27:18,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:27:18,679 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 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 127 [2022-11-25 18:27:18,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:27:18,687 INFO L225 Difference]: With dead ends: 2383 [2022-11-25 18:27:18,687 INFO L226 Difference]: Without dead ends: 1787 [2022-11-25 18:27:18,689 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 [2022-11-25 18:27:18,689 INFO L413 NwaCegarLoop]: 550 mSDtfsCounter, 115 mSDsluCounter, 441 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 991 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 [2022-11-25 18:27:18,690 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 991 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 18:27:18,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1787 states. [2022-11-25 18:27:18,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1787 to 1785. [2022-11-25 18:27:18,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1785 states, 1784 states have (on average 1.7062780269058295) internal successors, (3044), 1784 states have internal predecessors, (3044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:27:18,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1785 states to 1785 states and 3044 transitions. [2022-11-25 18:27:18,785 INFO L78 Accepts]: Start accepts. Automaton has 1785 states and 3044 transitions. Word has length 127 [2022-11-25 18:27:18,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:27:18,785 INFO L495 AbstractCegarLoop]: Abstraction has 1785 states and 3044 transitions. [2022-11-25 18:27:18,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:27:18,786 INFO L276 IsEmpty]: Start isEmpty. Operand 1785 states and 3044 transitions. [2022-11-25 18:27:18,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-11-25 18:27:18,787 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:27:18,788 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:27:18,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-25 18:27:18,788 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:27:18,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:27:18,789 INFO L85 PathProgramCache]: Analyzing trace with hash 114997535, now seen corresponding path program 1 times [2022-11-25 18:27:18,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:27:18,789 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25701125] [2022-11-25 18:27:18,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:27:18,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:27:18,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:27:18,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:27:18,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:27:18,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25701125] [2022-11-25 18:27:18,933 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25701125] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:27:18,933 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:27:18,933 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 18:27:18,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69566170] [2022-11-25 18:27:18,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:27:18,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:27:18,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:27:18,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:27:18,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:27:18,935 INFO L87 Difference]: Start difference. First operand 1785 states and 3044 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:27:19,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:27:19,177 INFO L93 Difference]: Finished difference Result 4696 states and 8005 transitions. [2022-11-25 18:27:19,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:27:19,178 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 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 127 [2022-11-25 18:27:19,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:27:19,192 INFO L225 Difference]: With dead ends: 4696 [2022-11-25 18:27:19,192 INFO L226 Difference]: Without dead ends: 3119 [2022-11-25 18:27:19,195 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 [2022-11-25 18:27:19,196 INFO L413 NwaCegarLoop]: 549 mSDtfsCounter, 107 mSDsluCounter, 421 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 970 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 18:27:19,196 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 970 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 18:27:19,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3119 states. [2022-11-25 18:27:19,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3119 to 3117. [2022-11-25 18:27:19,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3117 states, 3116 states have (on average 1.6903080872913991) internal successors, (5267), 3116 states have internal predecessors, (5267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:27:19,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3117 states to 3117 states and 5267 transitions. [2022-11-25 18:27:19,394 INFO L78 Accepts]: Start accepts. Automaton has 3117 states and 5267 transitions. Word has length 127 [2022-11-25 18:27:19,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:27:19,394 INFO L495 AbstractCegarLoop]: Abstraction has 3117 states and 5267 transitions. [2022-11-25 18:27:19,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:27:19,395 INFO L276 IsEmpty]: Start isEmpty. Operand 3117 states and 5267 transitions. [2022-11-25 18:27:19,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-11-25 18:27:19,396 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:27:19,397 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:27:19,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-25 18:27:19,397 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:27:19,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:27:19,398 INFO L85 PathProgramCache]: Analyzing trace with hash -1099622423, now seen corresponding path program 1 times [2022-11-25 18:27:19,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:27:19,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121678650] [2022-11-25 18:27:19,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:27:19,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:27:19,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:27:19,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:27:19,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:27:19,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121678650] [2022-11-25 18:27:19,505 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121678650] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:27:19,505 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:27:19,506 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 18:27:19,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468665824] [2022-11-25 18:27:19,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:27:19,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:27:19,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:27:19,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:27:19,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:27:19,508 INFO L87 Difference]: Start difference. First operand 3117 states and 5267 transitions. Second operand has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:27:19,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:27:19,780 INFO L93 Difference]: Finished difference Result 5900 states and 9996 transitions. [2022-11-25 18:27:19,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:27:19,781 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 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 130 [2022-11-25 18:27:19,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:27:19,797 INFO L225 Difference]: With dead ends: 5900 [2022-11-25 18:27:19,797 INFO L226 Difference]: Without dead ends: 4323 [2022-11-25 18:27:19,799 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 [2022-11-25 18:27:19,800 INFO L413 NwaCegarLoop]: 539 mSDtfsCounter, 108 mSDsluCounter, 442 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 981 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 [2022-11-25 18:27:19,800 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 981 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 18:27:19,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4323 states. [2022-11-25 18:27:20,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4323 to 4321. [2022-11-25 18:27:20,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4321 states, 4320 states have (on average 1.679861111111111) internal successors, (7257), 4320 states have internal predecessors, (7257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:27:20,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4321 states to 4321 states and 7257 transitions. [2022-11-25 18:27:20,094 INFO L78 Accepts]: Start accepts. Automaton has 4321 states and 7257 transitions. Word has length 130 [2022-11-25 18:27:20,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:27:20,094 INFO L495 AbstractCegarLoop]: Abstraction has 4321 states and 7257 transitions. [2022-11-25 18:27:20,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:27:20,095 INFO L276 IsEmpty]: Start isEmpty. Operand 4321 states and 7257 transitions. [2022-11-25 18:27:20,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-11-25 18:27:20,096 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:27:20,096 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:27:20,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-25 18:27:20,097 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:27:20,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:27:20,097 INFO L85 PathProgramCache]: Analyzing trace with hash 1139060542, now seen corresponding path program 1 times [2022-11-25 18:27:20,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:27:20,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118934534] [2022-11-25 18:27:20,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:27:20,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:27:20,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:27:20,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:27:20,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:27:20,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118934534] [2022-11-25 18:27:20,340 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118934534] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:27:20,340 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:27:20,340 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-25 18:27:20,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512246558] [2022-11-25 18:27:20,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:27:20,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 18:27:20,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:27:20,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 18:27:20,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-25 18:27:20,343 INFO L87 Difference]: Start difference. First operand 4321 states and 7257 transitions. Second operand has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 6 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:27:21,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:27:21,926 INFO L93 Difference]: Finished difference Result 27701 states and 47018 transitions. [2022-11-25 18:27:21,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 18:27:21,927 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 6 states have internal predecessors, (130), 0 states have call successors, (0), 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 130 [2022-11-25 18:27:21,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:27:22,006 INFO L225 Difference]: With dead ends: 27701 [2022-11-25 18:27:22,007 INFO L226 Difference]: Without dead ends: 23595 [2022-11-25 18:27:22,016 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-11-25 18:27:22,016 INFO L413 NwaCegarLoop]: 451 mSDtfsCounter, 1656 mSDsluCounter, 2313 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1656 SdHoareTripleChecker+Valid, 2764 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 18:27:22,017 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1656 Valid, 2764 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 18:27:22,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23595 states. [2022-11-25 18:27:22,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23595 to 8277. [2022-11-25 18:27:22,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8277 states, 8276 states have (on average 1.6718221362977284) internal successors, (13836), 8276 states have internal predecessors, (13836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:27:22,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8277 states to 8277 states and 13836 transitions. [2022-11-25 18:27:22,843 INFO L78 Accepts]: Start accepts. Automaton has 8277 states and 13836 transitions. Word has length 130 [2022-11-25 18:27:22,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:27:22,844 INFO L495 AbstractCegarLoop]: Abstraction has 8277 states and 13836 transitions. [2022-11-25 18:27:22,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 6 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:27:22,845 INFO L276 IsEmpty]: Start isEmpty. Operand 8277 states and 13836 transitions. [2022-11-25 18:27:22,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-11-25 18:27:22,847 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:27:22,847 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:27:22,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-25 18:27:22,847 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:27:22,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:27:22,848 INFO L85 PathProgramCache]: Analyzing trace with hash -1143468315, now seen corresponding path program 1 times [2022-11-25 18:27:22,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:27:22,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564284862] [2022-11-25 18:27:22,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:27:22,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:27:22,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:27:23,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:27:23,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:27:23,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564284862] [2022-11-25 18:27:23,013 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564284862] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:27:23,013 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:27:23,013 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 18:27:23,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764046586] [2022-11-25 18:27:23,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:27:23,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 18:27:23,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:27:23,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 18:27:23,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 18:27:23,031 INFO L87 Difference]: Start difference. First operand 8277 states and 13836 transitions. Second operand has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:27:24,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:27:24,458 INFO L93 Difference]: Finished difference Result 27383 states and 46124 transitions. [2022-11-25 18:27:24,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 18:27:24,459 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 0 states have call successors, (0), 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 131 [2022-11-25 18:27:24,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:27:24,512 INFO L225 Difference]: With dead ends: 27383 [2022-11-25 18:27:24,513 INFO L226 Difference]: Without dead ends: 19321 [2022-11-25 18:27:24,524 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 [2022-11-25 18:27:24,525 INFO L413 NwaCegarLoop]: 449 mSDtfsCounter, 423 mSDsluCounter, 901 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 423 SdHoareTripleChecker+Valid, 1350 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 18:27:24,526 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [423 Valid, 1350 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 18:27:24,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19321 states. [2022-11-25 18:27:25,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19321 to 13744. [2022-11-25 18:27:25,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13744 states, 13743 states have (on average 1.6712508185985593) internal successors, (22968), 13743 states have internal predecessors, (22968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:27:25,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13744 states to 13744 states and 22968 transitions. [2022-11-25 18:27:25,835 INFO L78 Accepts]: Start accepts. Automaton has 13744 states and 22968 transitions. Word has length 131 [2022-11-25 18:27:25,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:27:25,836 INFO L495 AbstractCegarLoop]: Abstraction has 13744 states and 22968 transitions. [2022-11-25 18:27:25,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:27:25,836 INFO L276 IsEmpty]: Start isEmpty. Operand 13744 states and 22968 transitions. [2022-11-25 18:27:25,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-11-25 18:27:25,838 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:27:25,838 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:27:25,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-25 18:27:25,839 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:27:25,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:27:25,839 INFO L85 PathProgramCache]: Analyzing trace with hash 1281585493, now seen corresponding path program 1 times [2022-11-25 18:27:25,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:27:25,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545967014] [2022-11-25 18:27:25,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:27:25,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:27:25,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:27:26,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:27:26,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:27:26,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545967014] [2022-11-25 18:27:26,005 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545967014] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:27:26,005 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:27:26,005 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 18:27:26,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729936353] [2022-11-25 18:27:26,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:27:26,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 18:27:26,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:27:26,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 18:27:26,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 18:27:26,008 INFO L87 Difference]: Start difference. First operand 13744 states and 22968 transitions. Second operand has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:27:28,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:27:28,565 INFO L93 Difference]: Finished difference Result 45169 states and 75660 transitions. [2022-11-25 18:27:28,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 18:27:28,566 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 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 132 [2022-11-25 18:27:28,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:27:28,653 INFO L225 Difference]: With dead ends: 45169 [2022-11-25 18:27:28,654 INFO L226 Difference]: Without dead ends: 31640 [2022-11-25 18:27:28,674 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 [2022-11-25 18:27:28,675 INFO L413 NwaCegarLoop]: 450 mSDtfsCounter, 421 mSDsluCounter, 1003 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 421 SdHoareTripleChecker+Valid, 1453 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 [2022-11-25 18:27:28,675 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [421 Valid, 1453 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 18:27:28,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31640 states. [2022-11-25 18:27:30,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31640 to 22603. [2022-11-25 18:27:30,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22603 states, 22602 states have (on average 1.662065303955402) internal successors, (37566), 22602 states have internal predecessors, (37566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:27:30,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22603 states to 22603 states and 37566 transitions. [2022-11-25 18:27:30,596 INFO L78 Accepts]: Start accepts. Automaton has 22603 states and 37566 transitions. Word has length 132 [2022-11-25 18:27:30,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:27:30,596 INFO L495 AbstractCegarLoop]: Abstraction has 22603 states and 37566 transitions. [2022-11-25 18:27:30,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:27:30,597 INFO L276 IsEmpty]: Start isEmpty. Operand 22603 states and 37566 transitions. [2022-11-25 18:27:30,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-11-25 18:27:30,599 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:27:30,599 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:27:30,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-25 18:27:30,600 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:27:30,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:27:30,600 INFO L85 PathProgramCache]: Analyzing trace with hash -682153444, now seen corresponding path program 1 times [2022-11-25 18:27:30,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:27:30,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752177635] [2022-11-25 18:27:30,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:27:30,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:27:30,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:27:30,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:27:30,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:27:30,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752177635] [2022-11-25 18:27:30,899 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752177635] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:27:30,899 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:27:30,899 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 18:27:30,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45302792] [2022-11-25 18:27:30,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:27:30,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 18:27:30,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:27:30,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 18:27:30,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 18:27:30,901 INFO L87 Difference]: Start difference. First operand 22603 states and 37566 transitions. Second operand has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:27:34,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:27:34,629 INFO L93 Difference]: Finished difference Result 74067 states and 123372 transitions. [2022-11-25 18:27:34,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 18:27:34,630 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 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 133 [2022-11-25 18:27:34,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:27:34,767 INFO L225 Difference]: With dead ends: 74067 [2022-11-25 18:27:34,767 INFO L226 Difference]: Without dead ends: 51679 [2022-11-25 18:27:34,791 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 [2022-11-25 18:27:34,792 INFO L413 NwaCegarLoop]: 450 mSDtfsCounter, 419 mSDsluCounter, 1005 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 419 SdHoareTripleChecker+Valid, 1455 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 [2022-11-25 18:27:34,792 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [419 Valid, 1455 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 18:27:34,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51679 states. [2022-11-25 18:27:37,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51679 to 36998. [2022-11-25 18:27:37,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36998 states, 36997 states have (on average 1.6528907749276969) internal successors, (61152), 36997 states have internal predecessors, (61152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:27:37,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36998 states to 36998 states and 61152 transitions. [2022-11-25 18:27:37,407 INFO L78 Accepts]: Start accepts. Automaton has 36998 states and 61152 transitions. Word has length 133 [2022-11-25 18:27:37,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:27:37,408 INFO L495 AbstractCegarLoop]: Abstraction has 36998 states and 61152 transitions. [2022-11-25 18:27:37,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:27:37,409 INFO L276 IsEmpty]: Start isEmpty. Operand 36998 states and 61152 transitions. [2022-11-25 18:27:37,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-11-25 18:27:37,410 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:27:37,410 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:27:37,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-25 18:27:37,411 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:27:37,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:27:37,412 INFO L85 PathProgramCache]: Analyzing trace with hash -1259514004, now seen corresponding path program 1 times [2022-11-25 18:27:37,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:27:37,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95626920] [2022-11-25 18:27:37,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:27:37,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:27:37,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:27:37,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:27:37,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:27:37,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95626920] [2022-11-25 18:27:37,616 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95626920] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:27:37,617 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:27:37,617 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 18:27:37,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801222490] [2022-11-25 18:27:37,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:27:37,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 18:27:37,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:27:37,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 18:27:37,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 18:27:37,620 INFO L87 Difference]: Start difference. First operand 36998 states and 61152 transitions. Second operand has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:27:42,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:27:42,297 INFO L93 Difference]: Finished difference Result 119893 states and 198604 transitions. [2022-11-25 18:27:42,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 18:27:42,298 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 0 states have call successors, (0), 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 134 [2022-11-25 18:27:42,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:27:42,519 INFO L225 Difference]: With dead ends: 119893 [2022-11-25 18:27:42,519 INFO L226 Difference]: Without dead ends: 83110 [2022-11-25 18:27:42,569 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 [2022-11-25 18:27:42,570 INFO L413 NwaCegarLoop]: 456 mSDtfsCounter, 417 mSDsluCounter, 1007 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 417 SdHoareTripleChecker+Valid, 1463 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 [2022-11-25 18:27:42,570 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [417 Valid, 1463 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 18:27:42,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83110 states. [2022-11-25 18:27:46,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83110 to 59829. [2022-11-25 18:27:46,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59829 states, 59828 states have (on average 1.6440128367988234) internal successors, (98358), 59828 states have internal predecessors, (98358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:27:46,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59829 states to 59829 states and 98358 transitions. [2022-11-25 18:27:46,189 INFO L78 Accepts]: Start accepts. Automaton has 59829 states and 98358 transitions. Word has length 134 [2022-11-25 18:27:46,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:27:46,189 INFO L495 AbstractCegarLoop]: Abstraction has 59829 states and 98358 transitions. [2022-11-25 18:27:46,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:27:46,190 INFO L276 IsEmpty]: Start isEmpty. Operand 59829 states and 98358 transitions. [2022-11-25 18:27:46,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-11-25 18:27:46,191 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:27:46,192 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:27:46,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-25 18:27:46,192 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:27:46,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:27:46,193 INFO L85 PathProgramCache]: Analyzing trace with hash -1428334268, now seen corresponding path program 1 times [2022-11-25 18:27:46,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:27:46,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418391372] [2022-11-25 18:27:46,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:27:46,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:27:46,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:27:46,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:27:46,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:27:46,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418391372] [2022-11-25 18:27:46,868 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418391372] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:27:46,869 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:27:46,869 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-25 18:27:46,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493492755] [2022-11-25 18:27:46,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:27:46,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 18:27:46,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:27:46,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 18:27:46,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-25 18:27:46,871 INFO L87 Difference]: Start difference. First operand 59829 states and 98358 transitions. Second operand has 6 states, 6 states have (on average 22.666666666666668) internal successors, (136), 6 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:27:50,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:27:50,309 INFO L93 Difference]: Finished difference Result 119445 states and 196373 transitions. [2022-11-25 18:27:50,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 18:27:50,310 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.666666666666668) internal successors, (136), 6 states have internal predecessors, (136), 0 states have call successors, (0), 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 136 [2022-11-25 18:27:50,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:27:50,436 INFO L225 Difference]: With dead ends: 119445 [2022-11-25 18:27:50,436 INFO L226 Difference]: Without dead ends: 59831 [2022-11-25 18:27:50,482 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-11-25 18:27:50,483 INFO L413 NwaCegarLoop]: 454 mSDtfsCounter, 110 mSDsluCounter, 1700 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 2154 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 18:27:50,483 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 2154 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 18:27:50,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59831 states. [2022-11-25 18:27:54,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59831 to 59829. [2022-11-25 18:27:54,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59829 states, 59828 states have (on average 1.6335662231730963) internal successors, (97733), 59828 states have internal predecessors, (97733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:27:54,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59829 states to 59829 states and 97733 transitions. [2022-11-25 18:27:54,555 INFO L78 Accepts]: Start accepts. Automaton has 59829 states and 97733 transitions. Word has length 136 [2022-11-25 18:27:54,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:27:54,556 INFO L495 AbstractCegarLoop]: Abstraction has 59829 states and 97733 transitions. [2022-11-25 18:27:54,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.666666666666668) internal successors, (136), 6 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:27:54,556 INFO L276 IsEmpty]: Start isEmpty. Operand 59829 states and 97733 transitions. [2022-11-25 18:27:54,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-11-25 18:27:54,567 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:27:54,568 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:27:54,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-25 18:27:54,568 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:27:54,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:27:54,569 INFO L85 PathProgramCache]: Analyzing trace with hash 1982359839, now seen corresponding path program 1 times [2022-11-25 18:27:54,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:27:54,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918098619] [2022-11-25 18:27:54,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:27:54,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:27:54,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:27:55,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:27:55,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:27:55,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918098619] [2022-11-25 18:27:55,093 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918098619] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:27:55,093 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:27:55,093 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-25 18:27:55,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168237851] [2022-11-25 18:27:55,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:27:55,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 18:27:55,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:27:55,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 18:27:55,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-25 18:27:55,097 INFO L87 Difference]: Start difference. First operand 59829 states and 97733 transitions. Second operand has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)