./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.05.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4dd537-3499-436d-be20-09102aa8fa6b/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4dd537-3499-436d-be20-09102aa8fa6b/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4dd537-3499-436d-be20-09102aa8fa6b/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4dd537-3499-436d-be20-09102aa8fa6b/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.05.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4dd537-3499-436d-be20-09102aa8fa6b/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4dd537-3499-436d-be20-09102aa8fa6b/bin/uautomizer-Dbtcem3rbc --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b5bbf318bd4a4e295f88f23f80bb9f32022c2eeb214e815b87206f6eafbbf272 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-02 21:12:24,555 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 21:12:24,557 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 21:12:24,603 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 21:12:24,603 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 21:12:24,607 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 21:12:24,609 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 21:12:24,614 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 21:12:24,616 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 21:12:24,618 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 21:12:24,619 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 21:12:24,620 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 21:12:24,620 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 21:12:24,622 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 21:12:24,623 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 21:12:24,624 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 21:12:24,625 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 21:12:24,625 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 21:12:24,627 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 21:12:24,628 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 21:12:24,630 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 21:12:24,635 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 21:12:24,639 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 21:12:24,640 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 21:12:24,650 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 21:12:24,651 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 21:12:24,651 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 21:12:24,654 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 21:12:24,655 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 21:12:24,656 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 21:12:24,657 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 21:12:24,658 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 21:12:24,660 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 21:12:24,661 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 21:12:24,662 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 21:12:24,662 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 21:12:24,663 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 21:12:24,663 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 21:12:24,664 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 21:12:24,664 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 21:12:24,665 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 21:12:24,667 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4dd537-3499-436d-be20-09102aa8fa6b/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-02 21:12:24,702 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 21:12:24,706 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 21:12:24,707 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 21:12:24,707 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 21:12:24,708 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 21:12:24,709 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 21:12:24,709 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 21:12:24,710 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 21:12:24,710 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 21:12:24,710 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 21:12:24,711 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 21:12:24,711 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 21:12:24,712 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 21:12:24,712 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 21:12:24,712 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 21:12:24,713 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 21:12:24,713 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 21:12:24,713 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 21:12:24,713 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 21:12:24,713 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 21:12:24,714 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 21:12:24,714 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 21:12:24,714 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 21:12:24,714 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 21:12:24,715 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:12:24,715 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 21:12:24,716 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 21:12:24,717 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 21:12:24,717 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 21:12:24,717 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 21:12:24,717 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 21:12:24,718 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 21:12:24,718 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 21:12:24,718 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4dd537-3499-436d-be20-09102aa8fa6b/bin/uautomizer-Dbtcem3rbc/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4dd537-3499-436d-be20-09102aa8fa6b/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b5bbf318bd4a4e295f88f23f80bb9f32022c2eeb214e815b87206f6eafbbf272 [2022-11-02 21:12:25,030 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 21:12:25,055 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 21:12:25,058 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 21:12:25,059 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 21:12:25,060 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 21:12:25,062 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4dd537-3499-436d-be20-09102aa8fa6b/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.05.cil-1.c [2022-11-02 21:12:25,144 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4dd537-3499-436d-be20-09102aa8fa6b/bin/uautomizer-Dbtcem3rbc/data/d8ac805a0/ad766a21db024018b4b75745391cce0d/FLAGc2a147833 [2022-11-02 21:12:25,750 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 21:12:25,751 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4dd537-3499-436d-be20-09102aa8fa6b/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.05.cil-1.c [2022-11-02 21:12:25,762 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4dd537-3499-436d-be20-09102aa8fa6b/bin/uautomizer-Dbtcem3rbc/data/d8ac805a0/ad766a21db024018b4b75745391cce0d/FLAGc2a147833 [2022-11-02 21:12:26,083 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4dd537-3499-436d-be20-09102aa8fa6b/bin/uautomizer-Dbtcem3rbc/data/d8ac805a0/ad766a21db024018b4b75745391cce0d [2022-11-02 21:12:26,087 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 21:12:26,090 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 21:12:26,095 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 21:12:26,095 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 21:12:26,099 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 21:12:26,100 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:12:26" (1/1) ... [2022-11-02 21:12:26,102 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@753697fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:12:26, skipping insertion in model container [2022-11-02 21:12:26,103 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:12:26" (1/1) ... [2022-11-02 21:12:26,110 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 21:12:26,167 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 21:12:26,348 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4dd537-3499-436d-be20-09102aa8fa6b/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.05.cil-1.c[913,926] [2022-11-02 21:12:26,418 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4dd537-3499-436d-be20-09102aa8fa6b/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.05.cil-1.c[5977,5990] [2022-11-02 21:12:26,510 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:12:26,520 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 21:12:26,534 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4dd537-3499-436d-be20-09102aa8fa6b/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.05.cil-1.c[913,926] [2022-11-02 21:12:26,580 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4dd537-3499-436d-be20-09102aa8fa6b/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.05.cil-1.c[5977,5990] [2022-11-02 21:12:26,633 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:12:26,650 INFO L208 MainTranslator]: Completed translation [2022-11-02 21:12:26,651 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:12:26 WrapperNode [2022-11-02 21:12:26,651 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 21:12:26,652 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 21:12:26,652 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 21:12:26,652 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 21:12:26,661 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:12:26" (1/1) ... [2022-11-02 21:12:26,685 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:12:26" (1/1) ... [2022-11-02 21:12:26,749 INFO L138 Inliner]: procedures = 58, calls = 63, calls flagged for inlining = 33, calls inlined = 33, statements flattened = 649 [2022-11-02 21:12:26,761 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 21:12:26,762 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 21:12:26,763 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 21:12:26,763 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 21:12:26,772 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:12:26" (1/1) ... [2022-11-02 21:12:26,773 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:12:26" (1/1) ... [2022-11-02 21:12:26,776 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:12:26" (1/1) ... [2022-11-02 21:12:26,776 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:12:26" (1/1) ... [2022-11-02 21:12:26,786 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:12:26" (1/1) ... [2022-11-02 21:12:26,797 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:12:26" (1/1) ... [2022-11-02 21:12:26,800 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:12:26" (1/1) ... [2022-11-02 21:12:26,802 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:12:26" (1/1) ... [2022-11-02 21:12:26,807 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 21:12:26,808 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 21:12:26,808 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 21:12:26,809 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 21:12:26,815 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:12:26" (1/1) ... [2022-11-02 21:12:26,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:12:26,833 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4dd537-3499-436d-be20-09102aa8fa6b/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:12:26,845 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4dd537-3499-436d-be20-09102aa8fa6b/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 21:12:26,881 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4dd537-3499-436d-be20-09102aa8fa6b/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 21:12:26,906 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 21:12:26,906 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-11-02 21:12:26,907 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-11-02 21:12:26,907 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify_threads [2022-11-02 21:12:26,908 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify_threads [2022-11-02 21:12:26,909 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2022-11-02 21:12:26,909 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2022-11-02 21:12:26,910 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2022-11-02 21:12:26,910 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2022-11-02 21:12:26,910 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2022-11-02 21:12:26,910 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2022-11-02 21:12:26,910 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2022-11-02 21:12:26,910 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2022-11-02 21:12:26,911 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2022-11-02 21:12:26,911 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2022-11-02 21:12:26,911 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 21:12:26,911 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2022-11-02 21:12:26,911 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2022-11-02 21:12:26,911 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 21:12:26,911 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 21:12:26,912 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2022-11-02 21:12:26,912 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2022-11-02 21:12:27,032 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 21:12:27,035 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 21:12:27,751 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 21:12:27,761 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 21:12:27,761 INFO L300 CfgBuilder]: Removed 12 assume(true) statements. [2022-11-02 21:12:27,764 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:12:27 BoogieIcfgContainer [2022-11-02 21:12:27,764 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 21:12:27,766 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 21:12:27,767 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 21:12:27,770 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 21:12:27,771 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 09:12:26" (1/3) ... [2022-11-02 21:12:27,771 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@507e1950 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:12:27, skipping insertion in model container [2022-11-02 21:12:27,772 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:12:26" (2/3) ... [2022-11-02 21:12:27,772 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@507e1950 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:12:27, skipping insertion in model container [2022-11-02 21:12:27,772 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:12:27" (3/3) ... [2022-11-02 21:12:27,807 INFO L112 eAbstractionObserver]: Analyzing ICFG pc_sfifo_1.cil-2+token_ring.05.cil-1.c [2022-11-02 21:12:27,826 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 21:12:27,827 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-02 21:12:27,909 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 21:12:27,915 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;@29e97bdd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 21:12:27,916 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-02 21:12:27,921 INFO L276 IsEmpty]: Start isEmpty. Operand has 279 states, 242 states have (on average 1.6074380165289257) internal successors, (389), 247 states have internal predecessors, (389), 25 states have call successors, (25), 9 states have call predecessors, (25), 9 states have return successors, (25), 24 states have call predecessors, (25), 25 states have call successors, (25) [2022-11-02 21:12:27,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-02 21:12:27,933 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:12:27,934 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] [2022-11-02 21:12:27,934 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:12:27,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:12:27,940 INFO L85 PathProgramCache]: Analyzing trace with hash -196001466, now seen corresponding path program 1 times [2022-11-02 21:12:27,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:12:27,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062077904] [2022-11-02 21:12:27,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:12:27,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:12:28,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:28,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-02 21:12:28,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:28,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-02 21:12:28,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:28,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:12:28,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:12:28,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062077904] [2022-11-02 21:12:28,299 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062077904] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:12:28,299 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:12:28,299 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:12:28,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790884047] [2022-11-02 21:12:28,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:12:28,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:12:28,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:12:28,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:12:28,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:12:28,338 INFO L87 Difference]: Start difference. First operand has 279 states, 242 states have (on average 1.6074380165289257) internal successors, (389), 247 states have internal predecessors, (389), 25 states have call successors, (25), 9 states have call predecessors, (25), 9 states have return successors, (25), 24 states have call predecessors, (25), 25 states have call successors, (25) Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-02 21:12:28,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:12:28,633 INFO L93 Difference]: Finished difference Result 610 states and 960 transitions. [2022-11-02 21:12:28,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:12:28,660 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 44 [2022-11-02 21:12:28,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:12:28,681 INFO L225 Difference]: With dead ends: 610 [2022-11-02 21:12:28,685 INFO L226 Difference]: Without dead ends: 339 [2022-11-02 21:12:28,694 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:12:28,699 INFO L413 NwaCegarLoop]: 425 mSDtfsCounter, 524 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 543 SdHoareTripleChecker+Valid, 707 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:12:28,701 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [543 Valid, 707 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 21:12:28,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2022-11-02 21:12:28,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 333. [2022-11-02 21:12:28,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333 states, 291 states have (on average 1.47766323024055) internal successors, (430), 295 states have internal predecessors, (430), 29 states have call successors, (29), 11 states have call predecessors, (29), 11 states have return successors, (33), 27 states have call predecessors, (33), 27 states have call successors, (33) [2022-11-02 21:12:28,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 492 transitions. [2022-11-02 21:12:28,814 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 492 transitions. Word has length 44 [2022-11-02 21:12:28,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:12:28,815 INFO L495 AbstractCegarLoop]: Abstraction has 333 states and 492 transitions. [2022-11-02 21:12:28,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-02 21:12:28,815 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 492 transitions. [2022-11-02 21:12:28,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-02 21:12:28,819 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:12:28,819 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] [2022-11-02 21:12:28,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 21:12:28,820 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:12:28,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:12:28,826 INFO L85 PathProgramCache]: Analyzing trace with hash 1414910090, now seen corresponding path program 1 times [2022-11-02 21:12:28,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:12:28,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519968460] [2022-11-02 21:12:28,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:12:28,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:12:28,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:28,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-02 21:12:28,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:28,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-02 21:12:28,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:28,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:12:28,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:12:28,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519968460] [2022-11-02 21:12:28,959 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519968460] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:12:28,960 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:12:28,960 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:12:28,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324838469] [2022-11-02 21:12:28,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:12:28,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:12:28,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:12:28,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:12:28,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:12:28,963 INFO L87 Difference]: Start difference. First operand 333 states and 492 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-02 21:12:29,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:12:29,355 INFO L93 Difference]: Finished difference Result 581 states and 832 transitions. [2022-11-02 21:12:29,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:12:29,362 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 45 [2022-11-02 21:12:29,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:12:29,368 INFO L225 Difference]: With dead ends: 581 [2022-11-02 21:12:29,368 INFO L226 Difference]: Without dead ends: 457 [2022-11-02 21:12:29,376 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:12:29,378 INFO L413 NwaCegarLoop]: 447 mSDtfsCounter, 228 mSDsluCounter, 441 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 230 SdHoareTripleChecker+Valid, 888 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 21:12:29,379 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [230 Valid, 888 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 21:12:29,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 457 states. [2022-11-02 21:12:29,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 457 to 400. [2022-11-02 21:12:29,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 400 states, 352 states have (on average 1.4602272727272727) internal successors, (514), 356 states have internal predecessors, (514), 32 states have call successors, (32), 14 states have call predecessors, (32), 14 states have return successors, (36), 30 states have call predecessors, (36), 30 states have call successors, (36) [2022-11-02 21:12:29,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 582 transitions. [2022-11-02 21:12:29,439 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 582 transitions. Word has length 45 [2022-11-02 21:12:29,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:12:29,439 INFO L495 AbstractCegarLoop]: Abstraction has 400 states and 582 transitions. [2022-11-02 21:12:29,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-02 21:12:29,440 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 582 transitions. [2022-11-02 21:12:29,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-02 21:12:29,451 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:12:29,451 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] [2022-11-02 21:12:29,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 21:12:29,452 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:12:29,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:12:29,452 INFO L85 PathProgramCache]: Analyzing trace with hash 130552629, now seen corresponding path program 1 times [2022-11-02 21:12:29,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:12:29,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663284320] [2022-11-02 21:12:29,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:12:29,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:12:29,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:29,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-02 21:12:29,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:29,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-02 21:12:29,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:29,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:12:29,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:12:29,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663284320] [2022-11-02 21:12:29,554 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663284320] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:12:29,554 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:12:29,554 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:12:29,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983943075] [2022-11-02 21:12:29,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:12:29,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:12:29,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:12:29,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:12:29,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:12:29,556 INFO L87 Difference]: Start difference. First operand 400 states and 582 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-02 21:12:29,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:12:29,780 INFO L93 Difference]: Finished difference Result 808 states and 1141 transitions. [2022-11-02 21:12:29,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:12:29,781 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 45 [2022-11-02 21:12:29,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:12:29,786 INFO L225 Difference]: With dead ends: 808 [2022-11-02 21:12:29,786 INFO L226 Difference]: Without dead ends: 617 [2022-11-02 21:12:29,791 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:12:29,795 INFO L413 NwaCegarLoop]: 422 mSDtfsCounter, 533 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 552 SdHoareTripleChecker+Valid, 702 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:12:29,797 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [552 Valid, 702 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 21:12:29,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 617 states. [2022-11-02 21:12:29,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 617 to 565. [2022-11-02 21:12:29,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 565 states, 498 states have (on average 1.4136546184738956) internal successors, (704), 505 states have internal predecessors, (704), 43 states have call successors, (43), 21 states have call predecessors, (43), 22 states have return successors, (53), 39 states have call predecessors, (53), 41 states have call successors, (53) [2022-11-02 21:12:29,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 565 states to 565 states and 800 transitions. [2022-11-02 21:12:29,859 INFO L78 Accepts]: Start accepts. Automaton has 565 states and 800 transitions. Word has length 45 [2022-11-02 21:12:29,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:12:29,860 INFO L495 AbstractCegarLoop]: Abstraction has 565 states and 800 transitions. [2022-11-02 21:12:29,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-02 21:12:29,860 INFO L276 IsEmpty]: Start isEmpty. Operand 565 states and 800 transitions. [2022-11-02 21:12:29,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-02 21:12:29,862 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:12:29,862 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:12:29,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 21:12:29,863 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:12:29,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:12:29,864 INFO L85 PathProgramCache]: Analyzing trace with hash -1692231402, now seen corresponding path program 1 times [2022-11-02 21:12:29,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:12:29,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155469569] [2022-11-02 21:12:29,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:12:29,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:12:29,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:30,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-02 21:12:30,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:30,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-02 21:12:30,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:30,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-02 21:12:30,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:30,040 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-02 21:12:30,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:12:30,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155469569] [2022-11-02 21:12:30,043 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155469569] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:12:30,044 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:12:30,044 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:12:30,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137214361] [2022-11-02 21:12:30,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:12:30,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:12:30,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:12:30,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:12:30,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:12:30,047 INFO L87 Difference]: Start difference. First operand 565 states and 800 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-02 21:12:30,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:12:30,389 INFO L93 Difference]: Finished difference Result 1149 states and 1585 transitions. [2022-11-02 21:12:30,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:12:30,389 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 62 [2022-11-02 21:12:30,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:12:30,393 INFO L225 Difference]: With dead ends: 1149 [2022-11-02 21:12:30,394 INFO L226 Difference]: Without dead ends: 793 [2022-11-02 21:12:30,395 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:12:30,396 INFO L413 NwaCegarLoop]: 471 mSDtfsCounter, 212 mSDsluCounter, 472 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 943 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 21:12:30,396 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 943 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 21:12:30,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 793 states. [2022-11-02 21:12:30,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 793 to 755. [2022-11-02 21:12:30,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 755 states, 664 states have (on average 1.3614457831325302) internal successors, (904), 673 states have internal predecessors, (904), 57 states have call successors, (57), 29 states have call predecessors, (57), 32 states have return successors, (77), 53 states have call predecessors, (77), 55 states have call successors, (77) [2022-11-02 21:12:30,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 755 states to 755 states and 1038 transitions. [2022-11-02 21:12:30,448 INFO L78 Accepts]: Start accepts. Automaton has 755 states and 1038 transitions. Word has length 62 [2022-11-02 21:12:30,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:12:30,449 INFO L495 AbstractCegarLoop]: Abstraction has 755 states and 1038 transitions. [2022-11-02 21:12:30,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-02 21:12:30,449 INFO L276 IsEmpty]: Start isEmpty. Operand 755 states and 1038 transitions. [2022-11-02 21:12:30,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-02 21:12:30,451 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:12:30,451 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:12:30,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-02 21:12:30,452 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:12:30,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:12:30,452 INFO L85 PathProgramCache]: Analyzing trace with hash 492946489, now seen corresponding path program 1 times [2022-11-02 21:12:30,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:12:30,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362785593] [2022-11-02 21:12:30,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:12:30,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:12:30,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:30,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-02 21:12:30,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:30,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-02 21:12:30,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:30,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-02 21:12:30,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:30,515 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-02 21:12:30,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:12:30,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362785593] [2022-11-02 21:12:30,515 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362785593] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:12:30,516 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:12:30,516 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:12:30,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125484717] [2022-11-02 21:12:30,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:12:30,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:12:30,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:12:30,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:12:30,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:12:30,517 INFO L87 Difference]: Start difference. First operand 755 states and 1038 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-02 21:12:30,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:12:30,724 INFO L93 Difference]: Finished difference Result 1408 states and 1891 transitions. [2022-11-02 21:12:30,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:12:30,725 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 67 [2022-11-02 21:12:30,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:12:30,729 INFO L225 Difference]: With dead ends: 1408 [2022-11-02 21:12:30,729 INFO L226 Difference]: Without dead ends: 954 [2022-11-02 21:12:30,730 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:12:30,731 INFO L413 NwaCegarLoop]: 417 mSDtfsCounter, 520 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 539 SdHoareTripleChecker+Valid, 699 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:12:30,732 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [539 Valid, 699 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:12:30,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 954 states. [2022-11-02 21:12:30,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 954 to 899. [2022-11-02 21:12:30,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 899 states, 792 states have (on average 1.332070707070707) internal successors, (1055), 803 states have internal predecessors, (1055), 65 states have call successors, (65), 35 states have call predecessors, (65), 40 states have return successors, (91), 61 states have call predecessors, (91), 63 states have call successors, (91) [2022-11-02 21:12:30,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 899 states to 899 states and 1211 transitions. [2022-11-02 21:12:30,796 INFO L78 Accepts]: Start accepts. Automaton has 899 states and 1211 transitions. Word has length 67 [2022-11-02 21:12:30,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:12:30,797 INFO L495 AbstractCegarLoop]: Abstraction has 899 states and 1211 transitions. [2022-11-02 21:12:30,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-02 21:12:30,797 INFO L276 IsEmpty]: Start isEmpty. Operand 899 states and 1211 transitions. [2022-11-02 21:12:30,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-02 21:12:30,799 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:12:30,799 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:12:30,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-02 21:12:30,800 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:12:30,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:12:30,800 INFO L85 PathProgramCache]: Analyzing trace with hash 1766542515, now seen corresponding path program 1 times [2022-11-02 21:12:30,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:12:30,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029627752] [2022-11-02 21:12:30,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:12:30,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:12:30,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:30,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-02 21:12:30,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:30,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-02 21:12:30,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:30,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-02 21:12:30,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:30,927 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 21:12:30,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:12:30,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029627752] [2022-11-02 21:12:30,928 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029627752] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:12:30,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1438063015] [2022-11-02 21:12:30,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:12:30,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:12:30,928 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4dd537-3499-436d-be20-09102aa8fa6b/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:12:30,930 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4dd537-3499-436d-be20-09102aa8fa6b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:12:30,941 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4dd537-3499-436d-be20-09102aa8fa6b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-02 21:12:31,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:31,058 INFO L263 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-02 21:12:31,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:12:31,217 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:12:31,217 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:12:31,262 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-02 21:12:31,263 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1438063015] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-02 21:12:31,263 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:12:31,263 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6, 4] total 8 [2022-11-02 21:12:31,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077080363] [2022-11-02 21:12:31,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:12:31,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:12:31,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:12:31,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:12:31,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:12:31,265 INFO L87 Difference]: Start difference. First operand 899 states and 1211 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-02 21:12:31,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:12:31,496 INFO L93 Difference]: Finished difference Result 955 states and 1279 transitions. [2022-11-02 21:12:31,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 21:12:31,497 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 68 [2022-11-02 21:12:31,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:12:31,502 INFO L225 Difference]: With dead ends: 955 [2022-11-02 21:12:31,502 INFO L226 Difference]: Without dead ends: 952 [2022-11-02 21:12:31,504 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-11-02 21:12:31,511 INFO L413 NwaCegarLoop]: 426 mSDtfsCounter, 713 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 713 SdHoareTripleChecker+Valid, 493 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:12:31,511 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [713 Valid, 493 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:12:31,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 952 states. [2022-11-02 21:12:31,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 952 to 898. [2022-11-02 21:12:31,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 898 states, 792 states have (on average 1.3295454545454546) internal successors, (1053), 802 states have internal predecessors, (1053), 64 states have call successors, (64), 35 states have call predecessors, (64), 40 states have return successors, (91), 61 states have call predecessors, (91), 63 states have call successors, (91) [2022-11-02 21:12:31,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 898 states to 898 states and 1208 transitions. [2022-11-02 21:12:31,595 INFO L78 Accepts]: Start accepts. Automaton has 898 states and 1208 transitions. Word has length 68 [2022-11-02 21:12:31,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:12:31,597 INFO L495 AbstractCegarLoop]: Abstraction has 898 states and 1208 transitions. [2022-11-02 21:12:31,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-02 21:12:31,598 INFO L276 IsEmpty]: Start isEmpty. Operand 898 states and 1208 transitions. [2022-11-02 21:12:31,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-02 21:12:31,600 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:12:31,600 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:12:31,641 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4dd537-3499-436d-be20-09102aa8fa6b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-02 21:12:31,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4dd537-3499-436d-be20-09102aa8fa6b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-02 21:12:31,814 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:12:31,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:12:31,815 INFO L85 PathProgramCache]: Analyzing trace with hash -1072636420, now seen corresponding path program 1 times [2022-11-02 21:12:31,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:12:31,815 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727865833] [2022-11-02 21:12:31,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:12:31,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:12:31,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:31,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-02 21:12:31,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:31,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-02 21:12:31,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:31,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-02 21:12:31,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:31,930 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 21:12:31,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:12:31,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727865833] [2022-11-02 21:12:31,930 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727865833] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:12:31,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1607523816] [2022-11-02 21:12:31,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:12:31,931 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:12:31,931 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4dd537-3499-436d-be20-09102aa8fa6b/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:12:31,932 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4dd537-3499-436d-be20-09102aa8fa6b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:12:31,951 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4dd537-3499-436d-be20-09102aa8fa6b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-02 21:12:32,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:32,082 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 21:12:32,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:12:32,417 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:12:32,417 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:12:32,522 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-02 21:12:32,522 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1607523816] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:12:32,523 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 21:12:32,523 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 4] total 11 [2022-11-02 21:12:32,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407161015] [2022-11-02 21:12:32,523 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 21:12:32,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 21:12:32,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:12:32,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 21:12:32,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-11-02 21:12:32,525 INFO L87 Difference]: Start difference. First operand 898 states and 1208 transitions. Second operand has 11 states, 11 states have (on average 13.727272727272727) internal successors, (151), 10 states have internal predecessors, (151), 7 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2022-11-02 21:12:34,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:12:34,279 INFO L93 Difference]: Finished difference Result 2598 states and 3428 transitions. [2022-11-02 21:12:34,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-11-02 21:12:34,280 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 13.727272727272727) internal successors, (151), 10 states have internal predecessors, (151), 7 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) Word has length 69 [2022-11-02 21:12:34,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:12:34,289 INFO L225 Difference]: With dead ends: 2598 [2022-11-02 21:12:34,289 INFO L226 Difference]: Without dead ends: 2054 [2022-11-02 21:12:34,291 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 460 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=324, Invalid=1482, Unknown=0, NotChecked=0, Total=1806 [2022-11-02 21:12:34,292 INFO L413 NwaCegarLoop]: 531 mSDtfsCounter, 877 mSDsluCounter, 2426 mSDsCounter, 0 mSdLazyCounter, 1412 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 903 SdHoareTripleChecker+Valid, 2957 SdHoareTripleChecker+Invalid, 1453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:12:34,293 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [903 Valid, 2957 Invalid, 1453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 1412 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-02 21:12:34,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2054 states. [2022-11-02 21:12:34,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2054 to 1287. [2022-11-02 21:12:34,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1287 states, 1142 states have (on average 1.3021015761821366) internal successors, (1487), 1160 states have internal predecessors, (1487), 84 states have call successors, (84), 49 states have call predecessors, (84), 59 states have return successors, (125), 78 states have call predecessors, (125), 83 states have call successors, (125) [2022-11-02 21:12:34,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1287 states to 1287 states and 1696 transitions. [2022-11-02 21:12:34,420 INFO L78 Accepts]: Start accepts. Automaton has 1287 states and 1696 transitions. Word has length 69 [2022-11-02 21:12:34,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:12:34,421 INFO L495 AbstractCegarLoop]: Abstraction has 1287 states and 1696 transitions. [2022-11-02 21:12:34,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.727272727272727) internal successors, (151), 10 states have internal predecessors, (151), 7 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2022-11-02 21:12:34,421 INFO L276 IsEmpty]: Start isEmpty. Operand 1287 states and 1696 transitions. [2022-11-02 21:12:34,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-11-02 21:12:34,424 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:12:34,425 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:12:34,454 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4dd537-3499-436d-be20-09102aa8fa6b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-02 21:12:34,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4dd537-3499-436d-be20-09102aa8fa6b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:12:34,634 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:12:34,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:12:34,635 INFO L85 PathProgramCache]: Analyzing trace with hash -357727812, now seen corresponding path program 1 times [2022-11-02 21:12:34,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:12:34,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924344204] [2022-11-02 21:12:34,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:12:34,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:12:34,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:34,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-02 21:12:34,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:34,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-02 21:12:34,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:34,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-02 21:12:34,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:34,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-02 21:12:34,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:34,760 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-11-02 21:12:34,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:12:34,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924344204] [2022-11-02 21:12:34,760 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924344204] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:12:34,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1275653665] [2022-11-02 21:12:34,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:12:34,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:12:34,761 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4dd537-3499-436d-be20-09102aa8fa6b/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:12:34,762 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4dd537-3499-436d-be20-09102aa8fa6b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:12:34,786 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4dd537-3499-436d-be20-09102aa8fa6b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-02 21:12:34,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:34,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 21:12:34,878 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:12:34,907 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-02 21:12:34,908 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:12:34,908 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1275653665] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:12:34,908 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 21:12:34,908 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-11-02 21:12:34,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671198158] [2022-11-02 21:12:34,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:12:34,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:12:34,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:12:34,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:12:34,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:12:34,910 INFO L87 Difference]: Start difference. First operand 1287 states and 1696 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-02 21:12:35,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:12:35,017 INFO L93 Difference]: Finished difference Result 2010 states and 2634 transitions. [2022-11-02 21:12:35,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:12:35,018 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 88 [2022-11-02 21:12:35,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:12:35,022 INFO L225 Difference]: With dead ends: 2010 [2022-11-02 21:12:35,023 INFO L226 Difference]: Without dead ends: 1165 [2022-11-02 21:12:35,024 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:12:35,025 INFO L413 NwaCegarLoop]: 432 mSDtfsCounter, 361 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 361 SdHoareTripleChecker+Valid, 507 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:12:35,025 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [361 Valid, 507 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 21:12:35,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1165 states. [2022-11-02 21:12:35,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1165 to 1150. [2022-11-02 21:12:35,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1150 states, 1021 states have (on average 1.3016650342801175) internal successors, (1329), 1038 states have internal predecessors, (1329), 76 states have call successors, (76), 43 states have call predecessors, (76), 51 states have return successors, (111), 69 states have call predecessors, (111), 75 states have call successors, (111) [2022-11-02 21:12:35,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1150 states to 1150 states and 1516 transitions. [2022-11-02 21:12:35,113 INFO L78 Accepts]: Start accepts. Automaton has 1150 states and 1516 transitions. Word has length 88 [2022-11-02 21:12:35,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:12:35,114 INFO L495 AbstractCegarLoop]: Abstraction has 1150 states and 1516 transitions. [2022-11-02 21:12:35,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-02 21:12:35,114 INFO L276 IsEmpty]: Start isEmpty. Operand 1150 states and 1516 transitions. [2022-11-02 21:12:35,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-11-02 21:12:35,117 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:12:35,117 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] [2022-11-02 21:12:35,162 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4dd537-3499-436d-be20-09102aa8fa6b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-02 21:12:35,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4dd537-3499-436d-be20-09102aa8fa6b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:12:35,330 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:12:35,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:12:35,331 INFO L85 PathProgramCache]: Analyzing trace with hash -884291044, now seen corresponding path program 1 times [2022-11-02 21:12:35,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:12:35,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133876984] [2022-11-02 21:12:35,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:12:35,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:12:35,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:35,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 21:12:35,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:35,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-02 21:12:35,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:35,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-02 21:12:35,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:35,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-02 21:12:35,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:35,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-02 21:12:35,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:35,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:12:35,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:12:35,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133876984] [2022-11-02 21:12:35,520 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133876984] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:12:35,520 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:12:35,521 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 21:12:35,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159643936] [2022-11-02 21:12:35,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:12:35,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 21:12:35,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:12:35,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 21:12:35,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 21:12:35,523 INFO L87 Difference]: Start difference. First operand 1150 states and 1516 transitions. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 21:12:37,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:12:37,291 INFO L93 Difference]: Finished difference Result 1662 states and 2323 transitions. [2022-11-02 21:12:37,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 21:12:37,292 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 101 [2022-11-02 21:12:37,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:12:37,305 INFO L225 Difference]: With dead ends: 1662 [2022-11-02 21:12:37,309 INFO L226 Difference]: Without dead ends: 1473 [2022-11-02 21:12:37,311 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-11-02 21:12:37,314 INFO L413 NwaCegarLoop]: 446 mSDtfsCounter, 893 mSDsluCounter, 664 mSDsCounter, 0 mSdLazyCounter, 1044 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 909 SdHoareTripleChecker+Valid, 1110 SdHoareTripleChecker+Invalid, 1142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 1044 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-02 21:12:37,315 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [909 Valid, 1110 Invalid, 1142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 1044 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-02 21:12:37,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1473 states. [2022-11-02 21:12:37,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1473 to 1344. [2022-11-02 21:12:37,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1344 states, 1194 states have (on average 1.338358458961474) internal successors, (1598), 1212 states have internal predecessors, (1598), 90 states have call successors, (90), 49 states have call predecessors, (90), 58 states have return successors, (128), 83 states have call predecessors, (128), 89 states have call successors, (128) [2022-11-02 21:12:37,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1344 states to 1344 states and 1816 transitions. [2022-11-02 21:12:37,491 INFO L78 Accepts]: Start accepts. Automaton has 1344 states and 1816 transitions. Word has length 101 [2022-11-02 21:12:37,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:12:37,491 INFO L495 AbstractCegarLoop]: Abstraction has 1344 states and 1816 transitions. [2022-11-02 21:12:37,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 21:12:37,491 INFO L276 IsEmpty]: Start isEmpty. Operand 1344 states and 1816 transitions. [2022-11-02 21:12:37,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-11-02 21:12:37,494 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:12:37,495 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] [2022-11-02 21:12:37,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-02 21:12:37,495 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:12:37,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:12:37,496 INFO L85 PathProgramCache]: Analyzing trace with hash 1693791648, now seen corresponding path program 1 times [2022-11-02 21:12:37,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:12:37,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839303568] [2022-11-02 21:12:37,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:12:37,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:12:37,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:37,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 21:12:37,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:37,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-02 21:12:37,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:37,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-02 21:12:37,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:37,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-02 21:12:37,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:37,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-02 21:12:37,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:37,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:12:37,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:12:37,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839303568] [2022-11-02 21:12:37,683 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839303568] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:12:37,683 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:12:37,683 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:12:37,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871887190] [2022-11-02 21:12:37,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:12:37,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:12:37,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:12:37,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:12:37,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:12:37,684 INFO L87 Difference]: Start difference. First operand 1344 states and 1816 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 21:12:39,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:12:39,897 INFO L93 Difference]: Finished difference Result 2120 states and 3034 transitions. [2022-11-02 21:12:39,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 21:12:39,898 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 101 [2022-11-02 21:12:39,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:12:39,906 INFO L225 Difference]: With dead ends: 2120 [2022-11-02 21:12:39,906 INFO L226 Difference]: Without dead ends: 1737 [2022-11-02 21:12:39,908 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-02 21:12:39,909 INFO L413 NwaCegarLoop]: 591 mSDtfsCounter, 899 mSDsluCounter, 1191 mSDsCounter, 0 mSdLazyCounter, 1627 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 915 SdHoareTripleChecker+Valid, 1782 SdHoareTripleChecker+Invalid, 1703 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 1627 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-02 21:12:39,909 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [915 Valid, 1782 Invalid, 1703 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 1627 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-02 21:12:39,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1737 states. [2022-11-02 21:12:40,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1737 to 1525. [2022-11-02 21:12:40,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1525 states, 1354 states have (on average 1.3596750369276218) internal successors, (1841), 1373 states have internal predecessors, (1841), 104 states have call successors, (104), 55 states have call predecessors, (104), 65 states have return successors, (144), 98 states have call predecessors, (144), 103 states have call successors, (144) [2022-11-02 21:12:40,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1525 states to 1525 states and 2089 transitions. [2022-11-02 21:12:40,104 INFO L78 Accepts]: Start accepts. Automaton has 1525 states and 2089 transitions. Word has length 101 [2022-11-02 21:12:40,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:12:40,104 INFO L495 AbstractCegarLoop]: Abstraction has 1525 states and 2089 transitions. [2022-11-02 21:12:40,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 21:12:40,105 INFO L276 IsEmpty]: Start isEmpty. Operand 1525 states and 2089 transitions. [2022-11-02 21:12:40,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-11-02 21:12:40,108 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:12:40,108 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] [2022-11-02 21:12:40,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-02 21:12:40,109 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:12:40,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:12:40,109 INFO L85 PathProgramCache]: Analyzing trace with hash -185339298, now seen corresponding path program 1 times [2022-11-02 21:12:40,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:12:40,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939690066] [2022-11-02 21:12:40,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:12:40,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:12:40,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:40,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 21:12:40,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:40,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-02 21:12:40,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:40,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-02 21:12:40,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:40,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-02 21:12:40,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:40,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-02 21:12:40,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:40,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:12:40,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:12:40,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939690066] [2022-11-02 21:12:40,274 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939690066] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:12:40,274 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:12:40,274 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:12:40,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169142004] [2022-11-02 21:12:40,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:12:40,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:12:40,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:12:40,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:12:40,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:12:40,276 INFO L87 Difference]: Start difference. First operand 1525 states and 2089 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 21:12:41,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:12:41,435 INFO L93 Difference]: Finished difference Result 2305 states and 3321 transitions. [2022-11-02 21:12:41,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:12:41,436 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 101 [2022-11-02 21:12:41,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:12:41,444 INFO L225 Difference]: With dead ends: 2305 [2022-11-02 21:12:41,444 INFO L226 Difference]: Without dead ends: 1741 [2022-11-02 21:12:41,446 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-11-02 21:12:41,447 INFO L413 NwaCegarLoop]: 396 mSDtfsCounter, 690 mSDsluCounter, 698 mSDsCounter, 0 mSdLazyCounter, 789 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 707 SdHoareTripleChecker+Valid, 1094 SdHoareTripleChecker+Invalid, 870 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 789 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-02 21:12:41,448 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [707 Valid, 1094 Invalid, 870 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 789 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-02 21:12:41,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1741 states. [2022-11-02 21:12:41,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1741 to 1525. [2022-11-02 21:12:41,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1525 states, 1354 states have (on average 1.3574593796159526) internal successors, (1838), 1373 states have internal predecessors, (1838), 104 states have call successors, (104), 55 states have call predecessors, (104), 65 states have return successors, (144), 98 states have call predecessors, (144), 103 states have call successors, (144) [2022-11-02 21:12:41,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1525 states to 1525 states and 2086 transitions. [2022-11-02 21:12:41,696 INFO L78 Accepts]: Start accepts. Automaton has 1525 states and 2086 transitions. Word has length 101 [2022-11-02 21:12:41,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:12:41,696 INFO L495 AbstractCegarLoop]: Abstraction has 1525 states and 2086 transitions. [2022-11-02 21:12:41,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 21:12:41,697 INFO L276 IsEmpty]: Start isEmpty. Operand 1525 states and 2086 transitions. [2022-11-02 21:12:41,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-11-02 21:12:41,703 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:12:41,703 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] [2022-11-02 21:12:41,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-02 21:12:41,703 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:12:41,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:12:41,707 INFO L85 PathProgramCache]: Analyzing trace with hash 1381418652, now seen corresponding path program 1 times [2022-11-02 21:12:41,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:12:41,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570467850] [2022-11-02 21:12:41,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:12:41,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:12:41,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:41,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 21:12:41,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:41,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-02 21:12:41,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:41,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-02 21:12:41,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:41,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-02 21:12:41,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:41,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-02 21:12:41,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:41,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:12:41,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:12:41,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570467850] [2022-11-02 21:12:41,892 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570467850] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:12:41,892 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:12:41,892 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:12:41,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039975511] [2022-11-02 21:12:41,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:12:41,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:12:41,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:12:41,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:12:41,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:12:41,894 INFO L87 Difference]: Start difference. First operand 1525 states and 2086 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 21:12:44,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:12:44,018 INFO L93 Difference]: Finished difference Result 2789 states and 4053 transitions. [2022-11-02 21:12:44,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 21:12:44,019 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 101 [2022-11-02 21:12:44,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:12:44,032 INFO L225 Difference]: With dead ends: 2789 [2022-11-02 21:12:44,033 INFO L226 Difference]: Without dead ends: 2225 [2022-11-02 21:12:44,038 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-02 21:12:44,040 INFO L413 NwaCegarLoop]: 573 mSDtfsCounter, 886 mSDsluCounter, 1191 mSDsCounter, 0 mSdLazyCounter, 1597 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 902 SdHoareTripleChecker+Valid, 1764 SdHoareTripleChecker+Invalid, 1675 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 1597 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-02 21:12:44,040 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [902 Valid, 1764 Invalid, 1675 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 1597 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-02 21:12:44,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2225 states. [2022-11-02 21:12:44,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2225 to 1894. [2022-11-02 21:12:44,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1894 states, 1681 states have (on average 1.3878643664485426) internal successors, (2333), 1702 states have internal predecessors, (2333), 132 states have call successors, (132), 67 states have call predecessors, (132), 79 states have return successors, (180), 128 states have call predecessors, (180), 131 states have call successors, (180) [2022-11-02 21:12:44,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1894 states to 1894 states and 2645 transitions. [2022-11-02 21:12:44,314 INFO L78 Accepts]: Start accepts. Automaton has 1894 states and 2645 transitions. Word has length 101 [2022-11-02 21:12:44,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:12:44,315 INFO L495 AbstractCegarLoop]: Abstraction has 1894 states and 2645 transitions. [2022-11-02 21:12:44,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 21:12:44,315 INFO L276 IsEmpty]: Start isEmpty. Operand 1894 states and 2645 transitions. [2022-11-02 21:12:44,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-11-02 21:12:44,319 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:12:44,319 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] [2022-11-02 21:12:44,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-02 21:12:44,320 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:12:44,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:12:44,320 INFO L85 PathProgramCache]: Analyzing trace with hash 323580574, now seen corresponding path program 1 times [2022-11-02 21:12:44,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:12:44,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225623859] [2022-11-02 21:12:44,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:12:44,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:12:44,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:44,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 21:12:44,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:44,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-02 21:12:44,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:44,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-02 21:12:44,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:44,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-02 21:12:44,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:44,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-02 21:12:44,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:44,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:12:44,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:12:44,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225623859] [2022-11-02 21:12:44,503 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225623859] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:12:44,503 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:12:44,503 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:12:44,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783566643] [2022-11-02 21:12:44,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:12:44,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:12:44,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:12:44,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:12:44,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:12:44,507 INFO L87 Difference]: Start difference. First operand 1894 states and 2645 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 21:12:46,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:12:46,800 INFO L93 Difference]: Finished difference Result 4094 states and 6052 transitions. [2022-11-02 21:12:46,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 21:12:46,800 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 101 [2022-11-02 21:12:46,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:12:46,815 INFO L225 Difference]: With dead ends: 4094 [2022-11-02 21:12:46,815 INFO L226 Difference]: Without dead ends: 3161 [2022-11-02 21:12:46,818 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-02 21:12:46,819 INFO L413 NwaCegarLoop]: 568 mSDtfsCounter, 885 mSDsluCounter, 1191 mSDsCounter, 0 mSdLazyCounter, 1589 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 901 SdHoareTripleChecker+Valid, 1759 SdHoareTripleChecker+Invalid, 1667 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 1589 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-02 21:12:46,820 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [901 Valid, 1759 Invalid, 1667 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 1589 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-02 21:12:46,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3161 states. [2022-11-02 21:12:47,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3161 to 2631. [2022-11-02 21:12:47,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2631 states, 2334 states have (on average 1.4220222793487576) internal successors, (3319), 2359 states have internal predecessors, (3319), 188 states have call successors, (188), 91 states have call predecessors, (188), 107 states have return successors, (258), 188 states have call predecessors, (258), 187 states have call successors, (258) [2022-11-02 21:12:47,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2631 states to 2631 states and 3765 transitions. [2022-11-02 21:12:47,191 INFO L78 Accepts]: Start accepts. Automaton has 2631 states and 3765 transitions. Word has length 101 [2022-11-02 21:12:47,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:12:47,191 INFO L495 AbstractCegarLoop]: Abstraction has 2631 states and 3765 transitions. [2022-11-02 21:12:47,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 21:12:47,192 INFO L276 IsEmpty]: Start isEmpty. Operand 2631 states and 3765 transitions. [2022-11-02 21:12:47,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-11-02 21:12:47,196 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:12:47,196 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] [2022-11-02 21:12:47,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-02 21:12:47,196 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:12:47,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:12:47,197 INFO L85 PathProgramCache]: Analyzing trace with hash -818921892, now seen corresponding path program 1 times [2022-11-02 21:12:47,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:12:47,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101238230] [2022-11-02 21:12:47,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:12:47,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:12:47,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:47,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 21:12:47,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:47,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-02 21:12:47,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:47,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-02 21:12:47,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:47,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-02 21:12:47,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:47,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-02 21:12:47,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:47,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:12:47,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:12:47,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101238230] [2022-11-02 21:12:47,391 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101238230] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:12:47,392 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:12:47,392 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:12:47,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659036587] [2022-11-02 21:12:47,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:12:47,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:12:47,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:12:47,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:12:47,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:12:47,393 INFO L87 Difference]: Start difference. First operand 2631 states and 3765 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 21:12:50,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:12:50,161 INFO L93 Difference]: Finished difference Result 7333 states and 11008 transitions. [2022-11-02 21:12:50,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-02 21:12:50,162 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 101 [2022-11-02 21:12:50,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:12:50,189 INFO L225 Difference]: With dead ends: 7333 [2022-11-02 21:12:50,189 INFO L226 Difference]: Without dead ends: 5663 [2022-11-02 21:12:50,195 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-11-02 21:12:50,196 INFO L413 NwaCegarLoop]: 649 mSDtfsCounter, 937 mSDsluCounter, 1183 mSDsCounter, 0 mSdLazyCounter, 1835 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 952 SdHoareTripleChecker+Valid, 1832 SdHoareTripleChecker+Invalid, 1915 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 1835 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-02 21:12:50,196 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [952 Valid, 1832 Invalid, 1915 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 1835 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-02 21:12:50,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5663 states. [2022-11-02 21:12:50,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5663 to 4088. [2022-11-02 21:12:50,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4088 states, 3631 states have (on average 1.4555218947948223) internal successors, (5285), 3664 states have internal predecessors, (5285), 292 states have call successors, (292), 139 states have call predecessors, (292), 163 states have return successors, (424), 300 states have call predecessors, (424), 291 states have call successors, (424) [2022-11-02 21:12:50,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4088 states to 4088 states and 6001 transitions. [2022-11-02 21:12:50,793 INFO L78 Accepts]: Start accepts. Automaton has 4088 states and 6001 transitions. Word has length 101 [2022-11-02 21:12:50,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:12:50,794 INFO L495 AbstractCegarLoop]: Abstraction has 4088 states and 6001 transitions. [2022-11-02 21:12:50,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 21:12:50,794 INFO L276 IsEmpty]: Start isEmpty. Operand 4088 states and 6001 transitions. [2022-11-02 21:12:50,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-11-02 21:12:50,799 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:12:50,799 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] [2022-11-02 21:12:50,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-02 21:12:50,800 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:12:50,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:12:50,800 INFO L85 PathProgramCache]: Analyzing trace with hash -578682146, now seen corresponding path program 1 times [2022-11-02 21:12:50,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:12:50,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154897394] [2022-11-02 21:12:50,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:12:50,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:12:50,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:50,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 21:12:50,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:50,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-02 21:12:50,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:50,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-02 21:12:50,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:50,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-02 21:12:50,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:50,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-02 21:12:50,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:50,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:12:50,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:12:50,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154897394] [2022-11-02 21:12:50,957 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154897394] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:12:50,957 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:12:50,957 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:12:50,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423725230] [2022-11-02 21:12:50,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:12:50,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:12:50,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:12:50,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:12:50,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:12:50,959 INFO L87 Difference]: Start difference. First operand 4088 states and 6001 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 21:12:52,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:12:52,406 INFO L93 Difference]: Finished difference Result 8151 states and 12358 transitions. [2022-11-02 21:12:52,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:12:52,409 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 101 [2022-11-02 21:12:52,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:12:52,449 INFO L225 Difference]: With dead ends: 8151 [2022-11-02 21:12:52,449 INFO L226 Difference]: Without dead ends: 5024 [2022-11-02 21:12:52,460 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-11-02 21:12:52,462 INFO L413 NwaCegarLoop]: 373 mSDtfsCounter, 818 mSDsluCounter, 539 mSDsCounter, 0 mSdLazyCounter, 662 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 835 SdHoareTripleChecker+Valid, 912 SdHoareTripleChecker+Invalid, 770 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 662 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-02 21:12:52,462 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [835 Valid, 912 Invalid, 770 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 662 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-02 21:12:52,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5024 states. [2022-11-02 21:12:53,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5024 to 4088. [2022-11-02 21:12:53,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4088 states, 3631 states have (on average 1.450839988983751) internal successors, (5268), 3664 states have internal predecessors, (5268), 292 states have call successors, (292), 139 states have call predecessors, (292), 163 states have return successors, (424), 300 states have call predecessors, (424), 291 states have call successors, (424) [2022-11-02 21:12:53,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4088 states to 4088 states and 5984 transitions. [2022-11-02 21:12:53,106 INFO L78 Accepts]: Start accepts. Automaton has 4088 states and 5984 transitions. Word has length 101 [2022-11-02 21:12:53,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:12:53,106 INFO L495 AbstractCegarLoop]: Abstraction has 4088 states and 5984 transitions. [2022-11-02 21:12:53,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 21:12:53,107 INFO L276 IsEmpty]: Start isEmpty. Operand 4088 states and 5984 transitions. [2022-11-02 21:12:53,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-11-02 21:12:53,114 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:12:53,115 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] [2022-11-02 21:12:53,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-02 21:12:53,115 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:12:53,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:12:53,116 INFO L85 PathProgramCache]: Analyzing trace with hash 260351516, now seen corresponding path program 1 times [2022-11-02 21:12:53,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:12:53,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748276892] [2022-11-02 21:12:53,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:12:53,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:12:53,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:53,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 21:12:53,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:53,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-02 21:12:53,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:53,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-02 21:12:53,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:53,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-02 21:12:53,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:53,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-02 21:12:53,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:53,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:12:53,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:12:53,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748276892] [2022-11-02 21:12:53,264 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748276892] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:12:53,265 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:12:53,265 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:12:53,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380011211] [2022-11-02 21:12:53,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:12:53,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:12:53,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:12:53,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:12:53,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:12:53,267 INFO L87 Difference]: Start difference. First operand 4088 states and 5984 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 21:12:54,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:12:54,786 INFO L93 Difference]: Finished difference Result 8133 states and 12271 transitions. [2022-11-02 21:12:54,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:12:54,789 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 101 [2022-11-02 21:12:54,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:12:54,811 INFO L225 Difference]: With dead ends: 8133 [2022-11-02 21:12:54,812 INFO L226 Difference]: Without dead ends: 5006 [2022-11-02 21:12:54,822 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-11-02 21:12:54,823 INFO L413 NwaCegarLoop]: 379 mSDtfsCounter, 687 mSDsluCounter, 696 mSDsCounter, 0 mSdLazyCounter, 746 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 704 SdHoareTripleChecker+Valid, 1075 SdHoareTripleChecker+Invalid, 829 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 746 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-02 21:12:54,823 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [704 Valid, 1075 Invalid, 829 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 746 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-02 21:12:54,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5006 states. [2022-11-02 21:12:55,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5006 to 4088. [2022-11-02 21:12:55,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4088 states, 3631 states have (on average 1.4461580831726797) internal successors, (5251), 3664 states have internal predecessors, (5251), 292 states have call successors, (292), 139 states have call predecessors, (292), 163 states have return successors, (424), 300 states have call predecessors, (424), 291 states have call successors, (424) [2022-11-02 21:12:55,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4088 states to 4088 states and 5967 transitions. [2022-11-02 21:12:55,385 INFO L78 Accepts]: Start accepts. Automaton has 4088 states and 5967 transitions. Word has length 101 [2022-11-02 21:12:55,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:12:55,386 INFO L495 AbstractCegarLoop]: Abstraction has 4088 states and 5967 transitions. [2022-11-02 21:12:55,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 21:12:55,386 INFO L276 IsEmpty]: Start isEmpty. Operand 4088 states and 5967 transitions. [2022-11-02 21:12:55,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-11-02 21:12:55,391 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:12:55,391 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] [2022-11-02 21:12:55,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-02 21:12:55,392 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:12:55,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:12:55,392 INFO L85 PathProgramCache]: Analyzing trace with hash 287417118, now seen corresponding path program 1 times [2022-11-02 21:12:55,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:12:55,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806045849] [2022-11-02 21:12:55,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:12:55,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:12:55,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:55,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 21:12:55,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:55,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-02 21:12:55,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:55,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-02 21:12:55,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:55,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-02 21:12:55,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:55,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-02 21:12:55,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:55,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:12:55,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:12:55,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806045849] [2022-11-02 21:12:55,577 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806045849] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:12:55,577 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:12:55,577 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:12:55,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523185676] [2022-11-02 21:12:55,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:12:55,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:12:55,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:12:55,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:12:55,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:12:55,579 INFO L87 Difference]: Start difference. First operand 4088 states and 5967 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 21:12:58,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:12:58,383 INFO L93 Difference]: Finished difference Result 12448 states and 18770 transitions. [2022-11-02 21:12:58,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-02 21:12:58,385 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 101 [2022-11-02 21:12:58,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:12:58,422 INFO L225 Difference]: With dead ends: 12448 [2022-11-02 21:12:58,422 INFO L226 Difference]: Without dead ends: 9321 [2022-11-02 21:12:58,432 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-11-02 21:12:58,433 INFO L413 NwaCegarLoop]: 542 mSDtfsCounter, 968 mSDsluCounter, 1183 mSDsCounter, 0 mSdLazyCounter, 1525 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 990 SdHoareTripleChecker+Valid, 1725 SdHoareTripleChecker+Invalid, 1611 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 1525 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-02 21:12:58,433 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [990 Valid, 1725 Invalid, 1611 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 1525 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-02 21:12:58,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9321 states. [2022-11-02 21:12:59,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9321 to 7027. [2022-11-02 21:12:59,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7027 states, 6258 states have (on average 1.4689996804090764) internal successors, (9193), 6307 states have internal predecessors, (9193), 492 states have call successors, (492), 235 states have call predecessors, (492), 275 states have return successors, (802), 516 states have call predecessors, (802), 491 states have call successors, (802) [2022-11-02 21:12:59,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7027 states to 7027 states and 10487 transitions. [2022-11-02 21:12:59,394 INFO L78 Accepts]: Start accepts. Automaton has 7027 states and 10487 transitions. Word has length 101 [2022-11-02 21:12:59,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:12:59,394 INFO L495 AbstractCegarLoop]: Abstraction has 7027 states and 10487 transitions. [2022-11-02 21:12:59,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 21:12:59,395 INFO L276 IsEmpty]: Start isEmpty. Operand 7027 states and 10487 transitions. [2022-11-02 21:12:59,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-11-02 21:12:59,402 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:12:59,402 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] [2022-11-02 21:12:59,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-02 21:12:59,403 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:12:59,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:12:59,403 INFO L85 PathProgramCache]: Analyzing trace with hash -1789919780, now seen corresponding path program 1 times [2022-11-02 21:12:59,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:12:59,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488633007] [2022-11-02 21:12:59,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:12:59,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:12:59,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:59,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 21:12:59,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:59,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-02 21:12:59,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:59,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-02 21:12:59,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:59,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-02 21:12:59,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:59,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-02 21:12:59,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:59,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:12:59,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:12:59,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488633007] [2022-11-02 21:12:59,553 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488633007] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:12:59,553 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:12:59,553 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:12:59,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835487625] [2022-11-02 21:12:59,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:12:59,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:12:59,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:12:59,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:12:59,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:12:59,555 INFO L87 Difference]: Start difference. First operand 7027 states and 10487 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 21:13:03,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:13:03,162 INFO L93 Difference]: Finished difference Result 22375 states and 34200 transitions. [2022-11-02 21:13:03,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-02 21:13:03,162 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 101 [2022-11-02 21:13:03,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:13:03,230 INFO L225 Difference]: With dead ends: 22375 [2022-11-02 21:13:03,230 INFO L226 Difference]: Without dead ends: 16309 [2022-11-02 21:13:03,252 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-11-02 21:13:03,253 INFO L413 NwaCegarLoop]: 534 mSDtfsCounter, 885 mSDsluCounter, 1183 mSDsCounter, 0 mSdLazyCounter, 1504 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 907 SdHoareTripleChecker+Valid, 1717 SdHoareTripleChecker+Invalid, 1588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 1504 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-02 21:13:03,253 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [907 Valid, 1717 Invalid, 1588 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 1504 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-02 21:13:03,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16309 states. [2022-11-02 21:13:04,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16309 to 12917. [2022-11-02 21:13:04,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12917 states, 11540 states have (on average 1.486048526863085) internal successors, (17149), 11621 states have internal predecessors, (17149), 876 states have call successors, (876), 427 states have call predecessors, (876), 499 states have return successors, (1704), 932 states have call predecessors, (1704), 875 states have call successors, (1704) [2022-11-02 21:13:04,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12917 states to 12917 states and 19729 transitions. [2022-11-02 21:13:04,913 INFO L78 Accepts]: Start accepts. Automaton has 12917 states and 19729 transitions. Word has length 101 [2022-11-02 21:13:04,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:13:04,914 INFO L495 AbstractCegarLoop]: Abstraction has 12917 states and 19729 transitions. [2022-11-02 21:13:04,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 21:13:04,914 INFO L276 IsEmpty]: Start isEmpty. Operand 12917 states and 19729 transitions. [2022-11-02 21:13:04,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-11-02 21:13:04,926 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:13:04,926 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] [2022-11-02 21:13:04,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-02 21:13:04,926 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:13:04,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:13:04,927 INFO L85 PathProgramCache]: Analyzing trace with hash -902696934, now seen corresponding path program 1 times [2022-11-02 21:13:04,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:13:04,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91579207] [2022-11-02 21:13:04,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:13:04,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:13:04,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:13:04,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 21:13:04,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:13:04,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-02 21:13:04,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:13:05,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-02 21:13:05,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:13:05,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-02 21:13:05,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:13:05,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-02 21:13:05,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:13:05,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:13:05,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:13:05,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91579207] [2022-11-02 21:13:05,062 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91579207] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:13:05,062 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:13:05,062 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:13:05,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685568529] [2022-11-02 21:13:05,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:13:05,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:13:05,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:13:05,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:13:05,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:13:05,064 INFO L87 Difference]: Start difference. First operand 12917 states and 19729 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 21:13:10,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:13:10,311 INFO L93 Difference]: Finished difference Result 34200 states and 52177 transitions. [2022-11-02 21:13:10,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 21:13:10,312 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 101 [2022-11-02 21:13:10,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:13:10,406 INFO L225 Difference]: With dead ends: 34200 [2022-11-02 21:13:10,406 INFO L226 Difference]: Without dead ends: 22245 [2022-11-02 21:13:10,446 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2022-11-02 21:13:10,447 INFO L413 NwaCegarLoop]: 394 mSDtfsCounter, 605 mSDsluCounter, 969 mSDsCounter, 0 mSdLazyCounter, 1174 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 605 SdHoareTripleChecker+Valid, 1363 SdHoareTripleChecker+Invalid, 1231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 1174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:13:10,448 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [605 Valid, 1363 Invalid, 1231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 1174 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-02 21:13:10,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22245 states. [2022-11-02 21:13:12,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22245 to 13112. [2022-11-02 21:13:12,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13112 states, 11735 states have (on average 1.477971878994461) internal successors, (17344), 11816 states have internal predecessors, (17344), 876 states have call successors, (876), 427 states have call predecessors, (876), 499 states have return successors, (1704), 932 states have call predecessors, (1704), 875 states have call successors, (1704) [2022-11-02 21:13:12,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13112 states to 13112 states and 19924 transitions. [2022-11-02 21:13:12,153 INFO L78 Accepts]: Start accepts. Automaton has 13112 states and 19924 transitions. Word has length 101 [2022-11-02 21:13:12,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:13:12,153 INFO L495 AbstractCegarLoop]: Abstraction has 13112 states and 19924 transitions. [2022-11-02 21:13:12,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 21:13:12,154 INFO L276 IsEmpty]: Start isEmpty. Operand 13112 states and 19924 transitions. [2022-11-02 21:13:12,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-11-02 21:13:12,165 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:13:12,165 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] [2022-11-02 21:13:12,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-02 21:13:12,166 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:13:12,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:13:12,166 INFO L85 PathProgramCache]: Analyzing trace with hash 1706090524, now seen corresponding path program 1 times [2022-11-02 21:13:12,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:13:12,167 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599777910] [2022-11-02 21:13:12,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:13:12,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:13:12,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:13:12,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 21:13:12,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:13:12,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-02 21:13:12,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:13:12,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-02 21:13:12,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:13:12,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-02 21:13:12,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:13:12,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-02 21:13:12,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:13:12,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:13:12,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:13:12,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599777910] [2022-11-02 21:13:12,365 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599777910] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:13:12,365 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:13:12,366 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:13:12,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039163556] [2022-11-02 21:13:12,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:13:12,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:13:12,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:13:12,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:13:12,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:13:12,369 INFO L87 Difference]: Start difference. First operand 13112 states and 19924 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 21:13:22,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:13:22,906 INFO L93 Difference]: Finished difference Result 69895 states and 110267 transitions. [2022-11-02 21:13:22,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-02 21:13:22,906 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 101 [2022-11-02 21:13:22,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:13:23,124 INFO L225 Difference]: With dead ends: 69895 [2022-11-02 21:13:23,125 INFO L226 Difference]: Without dead ends: 57745 [2022-11-02 21:13:23,175 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=87, Invalid=219, Unknown=0, NotChecked=0, Total=306 [2022-11-02 21:13:23,175 INFO L413 NwaCegarLoop]: 719 mSDtfsCounter, 2018 mSDsluCounter, 896 mSDsCounter, 0 mSdLazyCounter, 1721 mSolverCounterSat, 299 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2045 SdHoareTripleChecker+Valid, 1615 SdHoareTripleChecker+Invalid, 2020 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 299 IncrementalHoareTripleChecker+Valid, 1721 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:13:23,176 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2045 Valid, 1615 Invalid, 2020 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [299 Valid, 1721 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-02 21:13:23,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57745 states. [2022-11-02 21:13:29,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57745 to 47148. [2022-11-02 21:13:29,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47148 states, 42094 states have (on average 1.4848909583313536) internal successors, (62505), 42562 states have internal predecessors, (62505), 3191 states have call successors, (3191), 1597 states have call predecessors, (3191), 1861 states have return successors, (7419), 3052 states have call predecessors, (7419), 3190 states have call successors, (7419) [2022-11-02 21:13:29,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47148 states to 47148 states and 73115 transitions. [2022-11-02 21:13:29,732 INFO L78 Accepts]: Start accepts. Automaton has 47148 states and 73115 transitions. Word has length 101 [2022-11-02 21:13:29,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:13:29,732 INFO L495 AbstractCegarLoop]: Abstraction has 47148 states and 73115 transitions. [2022-11-02 21:13:29,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 21:13:29,732 INFO L276 IsEmpty]: Start isEmpty. Operand 47148 states and 73115 transitions. [2022-11-02 21:13:29,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-11-02 21:13:29,745 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:13:29,746 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:13:29,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-02 21:13:29,746 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:13:29,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:13:29,747 INFO L85 PathProgramCache]: Analyzing trace with hash 924470242, now seen corresponding path program 1 times [2022-11-02 21:13:29,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:13:29,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836807676] [2022-11-02 21:13:29,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:13:29,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:13:29,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:13:29,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-02 21:13:29,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:13:29,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-02 21:13:29,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:13:29,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-02 21:13:29,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:13:29,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-02 21:13:29,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:13:29,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-11-02 21:13:29,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:13:29,858 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 13 proven. 10 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-02 21:13:29,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:13:29,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836807676] [2022-11-02 21:13:29,858 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836807676] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:13:29,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2034696040] [2022-11-02 21:13:29,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:13:29,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:13:29,859 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4dd537-3499-436d-be20-09102aa8fa6b/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:13:29,862 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4dd537-3499-436d-be20-09102aa8fa6b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:13:29,865 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4dd537-3499-436d-be20-09102aa8fa6b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-02 21:13:29,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:13:30,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-02 21:13:30,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:13:30,024 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-02 21:13:30,028 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:13:30,028 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2034696040] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:13:30,028 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 21:13:30,028 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-11-02 21:13:30,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45306832] [2022-11-02 21:13:30,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:13:30,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:13:30,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:13:30,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:13:30,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:13:30,030 INFO L87 Difference]: Start difference. First operand 47148 states and 73115 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2022-11-02 21:13:35,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:13:35,564 INFO L93 Difference]: Finished difference Result 47527 states and 73583 transitions. [2022-11-02 21:13:35,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:13:35,565 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) Word has length 103 [2022-11-02 21:13:35,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:13:35,771 INFO L225 Difference]: With dead ends: 47527 [2022-11-02 21:13:35,772 INFO L226 Difference]: Without dead ends: 46201 [2022-11-02 21:13:35,799 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:13:35,800 INFO L413 NwaCegarLoop]: 443 mSDtfsCounter, 62 mSDsluCounter, 373 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 816 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:13:35,800 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 816 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 21:13:35,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46201 states.