./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.06.cil-2.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_50522614-0071-48a0-8f7a-ae82a599d7df/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50522614-0071-48a0-8f7a-ae82a599d7df/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_50522614-0071-48a0-8f7a-ae82a599d7df/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50522614-0071-48a0-8f7a-ae82a599d7df/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.06.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50522614-0071-48a0-8f7a-ae82a599d7df/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_50522614-0071-48a0-8f7a-ae82a599d7df/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 0becd5109c9f10d4cd495bd258560ff3ae7f6a1dd143c8dd06621d725fa7a35e --- 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 21:04:15,464 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 21:04:15,466 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 21:04:15,501 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 21:04:15,501 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 21:04:15,502 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 21:04:15,504 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 21:04:15,506 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 21:04:15,508 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 21:04:15,509 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 21:04:15,510 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 21:04:15,511 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 21:04:15,512 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 21:04:15,513 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 21:04:15,514 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 21:04:15,515 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 21:04:15,517 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 21:04:15,518 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 21:04:15,519 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 21:04:15,522 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 21:04:15,524 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 21:04:15,525 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 21:04:15,526 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 21:04:15,527 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 21:04:15,531 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 21:04:15,531 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 21:04:15,532 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 21:04:15,533 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 21:04:15,534 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 21:04:15,535 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 21:04:15,535 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 21:04:15,536 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 21:04:15,537 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 21:04:15,538 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 21:04:15,539 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 21:04:15,539 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 21:04:15,540 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 21:04:15,540 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 21:04:15,541 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 21:04:15,542 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 21:04:15,543 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 21:04:15,559 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50522614-0071-48a0-8f7a-ae82a599d7df/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-02 21:04:15,588 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 21:04:15,588 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 21:04:15,589 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 21:04:15,598 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 21:04:15,599 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 21:04:15,599 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 21:04:15,600 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 21:04:15,600 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 21:04:15,600 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 21:04:15,600 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 21:04:15,600 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 21:04:15,601 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 21:04:15,601 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 21:04:15,601 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 21:04:15,601 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 21:04:15,601 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 21:04:15,602 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 21:04:15,602 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 21:04:15,602 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 21:04:15,602 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 21:04:15,602 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 21:04:15,603 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 21:04:15,603 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 21:04:15,603 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 21:04:15,603 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:04:15,604 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 21:04:15,604 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 21:04:15,604 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 21:04:15,604 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 21:04:15,604 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 21:04:15,605 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 21:04:15,605 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 21:04:15,605 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 21:04:15,605 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_50522614-0071-48a0-8f7a-ae82a599d7df/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50522614-0071-48a0-8f7a-ae82a599d7df/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0becd5109c9f10d4cd495bd258560ff3ae7f6a1dd143c8dd06621d725fa7a35e [2022-11-02 21:04:15,934 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 21:04:15,978 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 21:04:15,982 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 21:04:15,983 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 21:04:15,984 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 21:04:15,985 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50522614-0071-48a0-8f7a-ae82a599d7df/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.06.cil-2.c [2022-11-02 21:04:16,061 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50522614-0071-48a0-8f7a-ae82a599d7df/bin/uautomizer-Dbtcem3rbc/data/dd3fbc94d/65f3bfcd431f41e9a05eb60f32eaba26/FLAG76cb446ce [2022-11-02 21:04:16,662 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 21:04:16,663 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50522614-0071-48a0-8f7a-ae82a599d7df/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.06.cil-2.c [2022-11-02 21:04:16,687 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50522614-0071-48a0-8f7a-ae82a599d7df/bin/uautomizer-Dbtcem3rbc/data/dd3fbc94d/65f3bfcd431f41e9a05eb60f32eaba26/FLAG76cb446ce [2022-11-02 21:04:16,979 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50522614-0071-48a0-8f7a-ae82a599d7df/bin/uautomizer-Dbtcem3rbc/data/dd3fbc94d/65f3bfcd431f41e9a05eb60f32eaba26 [2022-11-02 21:04:16,982 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 21:04:16,983 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 21:04:16,986 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 21:04:16,987 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 21:04:16,991 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 21:04:16,992 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:04:16" (1/1) ... [2022-11-02 21:04:16,993 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@316ddd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:04:16, skipping insertion in model container [2022-11-02 21:04:16,993 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:04:16" (1/1) ... [2022-11-02 21:04:17,001 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 21:04:17,080 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 21:04:17,272 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_50522614-0071-48a0-8f7a-ae82a599d7df/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.06.cil-2.c[914,927] [2022-11-02 21:04:17,362 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_50522614-0071-48a0-8f7a-ae82a599d7df/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.06.cil-2.c[7115,7128] [2022-11-02 21:04:17,466 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:04:17,480 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 21:04:17,498 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_50522614-0071-48a0-8f7a-ae82a599d7df/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.06.cil-2.c[914,927] [2022-11-02 21:04:17,544 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_50522614-0071-48a0-8f7a-ae82a599d7df/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.06.cil-2.c[7115,7128] [2022-11-02 21:04:17,622 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:04:17,640 INFO L208 MainTranslator]: Completed translation [2022-11-02 21:04:17,640 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:04:17 WrapperNode [2022-11-02 21:04:17,641 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 21:04:17,642 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 21:04:17,642 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 21:04:17,642 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 21:04:17,650 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:04:17" (1/1) ... [2022-11-02 21:04:17,663 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:04:17" (1/1) ... [2022-11-02 21:04:17,724 INFO L138 Inliner]: procedures = 65, calls = 75, calls flagged for inlining = 34, calls inlined = 34, statements flattened = 692 [2022-11-02 21:04:17,724 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 21:04:17,724 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 21:04:17,724 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 21:04:17,725 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 21:04:17,735 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:04:17" (1/1) ... [2022-11-02 21:04:17,735 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:04:17" (1/1) ... [2022-11-02 21:04:17,744 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:04:17" (1/1) ... [2022-11-02 21:04:17,745 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:04:17" (1/1) ... [2022-11-02 21:04:17,755 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:04:17" (1/1) ... [2022-11-02 21:04:17,766 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:04:17" (1/1) ... [2022-11-02 21:04:17,769 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:04:17" (1/1) ... [2022-11-02 21:04:17,772 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:04:17" (1/1) ... [2022-11-02 21:04:17,776 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 21:04:17,777 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 21:04:17,778 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 21:04:17,778 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 21:04:17,779 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:04:17" (1/1) ... [2022-11-02 21:04:17,789 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:04:17,819 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50522614-0071-48a0-8f7a-ae82a599d7df/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:04:17,844 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50522614-0071-48a0-8f7a-ae82a599d7df/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 21:04:17,858 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50522614-0071-48a0-8f7a-ae82a599d7df/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 21:04:17,904 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 21:04:17,904 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-11-02 21:04:17,905 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-11-02 21:04:17,905 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2022-11-02 21:04:17,906 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2022-11-02 21:04:17,907 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2022-11-02 21:04:17,907 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2022-11-02 21:04:17,907 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2022-11-02 21:04:17,907 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2022-11-02 21:04:17,907 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2022-11-02 21:04:17,908 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2022-11-02 21:04:17,908 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2022-11-02 21:04:17,908 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2022-11-02 21:04:17,908 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2022-11-02 21:04:17,909 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2022-11-02 21:04:17,909 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2022-11-02 21:04:17,909 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2022-11-02 21:04:17,910 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2022-11-02 21:04:17,910 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2022-11-02 21:04:17,910 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2022-11-02 21:04:17,910 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2022-11-02 21:04:17,910 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2022-11-02 21:04:17,910 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2022-11-02 21:04:17,911 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 21:04:17,911 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2022-11-02 21:04:17,911 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2022-11-02 21:04:17,911 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2022-11-02 21:04:17,911 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2022-11-02 21:04:17,911 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 21:04:17,912 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 21:04:17,912 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2022-11-02 21:04:17,912 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2022-11-02 21:04:18,086 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 21:04:18,089 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 21:04:19,001 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 21:04:19,012 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 21:04:19,012 INFO L300 CfgBuilder]: Removed 13 assume(true) statements. [2022-11-02 21:04:19,015 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:04:19 BoogieIcfgContainer [2022-11-02 21:04:19,016 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 21:04:19,021 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 21:04:19,021 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 21:04:19,025 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 21:04:19,026 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 09:04:16" (1/3) ... [2022-11-02 21:04:19,027 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ba1ffc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:04:19, skipping insertion in model container [2022-11-02 21:04:19,027 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:04:17" (2/3) ... [2022-11-02 21:04:19,027 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ba1ffc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:04:19, skipping insertion in model container [2022-11-02 21:04:19,028 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:04:19" (3/3) ... [2022-11-02 21:04:19,029 INFO L112 eAbstractionObserver]: Analyzing ICFG pc_sfifo_2.cil-1+token_ring.06.cil-2.c [2022-11-02 21:04:19,050 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 21:04:19,050 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-02 21:04:19,110 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 21:04:19,121 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;@2cc02594, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 21:04:19,122 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-02 21:04:19,128 INFO L276 IsEmpty]: Start isEmpty. Operand has 333 states, 282 states have (on average 1.6063829787234043) internal successors, (453), 288 states have internal predecessors, (453), 34 states have call successors, (34), 14 states have call predecessors, (34), 14 states have return successors, (34), 33 states have call predecessors, (34), 34 states have call successors, (34) [2022-11-02 21:04:19,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-02 21:04:19,146 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:04:19,147 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:04:19,148 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:04:19,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:04:19,154 INFO L85 PathProgramCache]: Analyzing trace with hash 751120114, now seen corresponding path program 1 times [2022-11-02 21:04:19,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:04:19,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370616589] [2022-11-02 21:04:19,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:19,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:04:19,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:19,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 21:04:19,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:19,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 21:04:19,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:19,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-02 21:04:19,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:19,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:04:19,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:19,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-02 21:04:19,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:19,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-02 21:04:19,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:19,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-02 21:04:19,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:19,839 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 21:04:19,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:04:19,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370616589] [2022-11-02 21:04:19,843 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370616589] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:04:19,843 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:04:19,843 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 21:04:19,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253786836] [2022-11-02 21:04:19,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:04:19,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 21:04:19,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:04:19,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 21:04:19,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:04:19,884 INFO L87 Difference]: Start difference. First operand has 333 states, 282 states have (on average 1.6063829787234043) internal successors, (453), 288 states have internal predecessors, (453), 34 states have call successors, (34), 14 states have call predecessors, (34), 14 states have return successors, (34), 33 states have call predecessors, (34), 34 states have call successors, (34) Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-02 21:04:21,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:04:21,180 INFO L93 Difference]: Finished difference Result 779 states and 1212 transitions. [2022-11-02 21:04:21,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 21:04:21,183 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-11-02 21:04:21,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:04:21,197 INFO L225 Difference]: With dead ends: 779 [2022-11-02 21:04:21,197 INFO L226 Difference]: Without dead ends: 458 [2022-11-02 21:04:21,202 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2022-11-02 21:04:21,206 INFO L413 NwaCegarLoop]: 496 mSDtfsCounter, 846 mSDsluCounter, 1134 mSDsCounter, 0 mSdLazyCounter, 829 mSolverCounterSat, 184 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 851 SdHoareTripleChecker+Valid, 1630 SdHoareTripleChecker+Invalid, 1013 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 184 IncrementalHoareTripleChecker+Valid, 829 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-02 21:04:21,207 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [851 Valid, 1630 Invalid, 1013 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [184 Valid, 829 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-02 21:04:21,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 458 states. [2022-11-02 21:04:21,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 458 to 419. [2022-11-02 21:04:21,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 419 states, 350 states have (on average 1.4857142857142858) internal successors, (520), 356 states have internal predecessors, (520), 45 states have call successors, (45), 21 states have call predecessors, (45), 22 states have return successors, (48), 44 states have call predecessors, (48), 43 states have call successors, (48) [2022-11-02 21:04:21,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 613 transitions. [2022-11-02 21:04:21,299 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 613 transitions. Word has length 65 [2022-11-02 21:04:21,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:04:21,300 INFO L495 AbstractCegarLoop]: Abstraction has 419 states and 613 transitions. [2022-11-02 21:04:21,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-02 21:04:21,300 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 613 transitions. [2022-11-02 21:04:21,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-02 21:04:21,304 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:04:21,304 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:04:21,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 21:04:21,304 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:04:21,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:04:21,305 INFO L85 PathProgramCache]: Analyzing trace with hash -1864958542, now seen corresponding path program 1 times [2022-11-02 21:04:21,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:04:21,306 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372297558] [2022-11-02 21:04:21,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:21,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:04:21,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:21,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 21:04:21,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:21,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 21:04:21,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:21,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-02 21:04:21,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:21,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:04:21,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:21,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-02 21:04:21,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:21,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-02 21:04:21,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:21,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-02 21:04:21,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:21,567 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 21:04:21,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:04:21,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372297558] [2022-11-02 21:04:21,568 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372297558] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:04:21,568 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:04:21,568 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 21:04:21,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749066445] [2022-11-02 21:04:21,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:04:21,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 21:04:21,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:04:21,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 21:04:21,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:04:21,571 INFO L87 Difference]: Start difference. First operand 419 states and 613 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-02 21:04:22,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:04:22,889 INFO L93 Difference]: Finished difference Result 766 states and 1090 transitions. [2022-11-02 21:04:22,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-02 21:04:22,890 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-11-02 21:04:22,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:04:22,894 INFO L225 Difference]: With dead ends: 766 [2022-11-02 21:04:22,894 INFO L226 Difference]: Without dead ends: 589 [2022-11-02 21:04:22,895 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2022-11-02 21:04:22,897 INFO L413 NwaCegarLoop]: 532 mSDtfsCounter, 1188 mSDsluCounter, 1086 mSDsCounter, 0 mSdLazyCounter, 1016 mSolverCounterSat, 182 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1213 SdHoareTripleChecker+Valid, 1618 SdHoareTripleChecker+Invalid, 1198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 182 IncrementalHoareTripleChecker+Valid, 1016 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:04:22,897 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1213 Valid, 1618 Invalid, 1198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [182 Valid, 1016 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-02 21:04:22,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 589 states. [2022-11-02 21:04:22,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 589 to 515. [2022-11-02 21:04:22,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 515 states, 426 states have (on average 1.4647887323943662) internal successors, (624), 434 states have internal predecessors, (624), 56 states have call successors, (56), 28 states have call predecessors, (56), 31 states have return successors, (67), 56 states have call predecessors, (67), 54 states have call successors, (67) [2022-11-02 21:04:22,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 515 states to 515 states and 747 transitions. [2022-11-02 21:04:22,956 INFO L78 Accepts]: Start accepts. Automaton has 515 states and 747 transitions. Word has length 65 [2022-11-02 21:04:22,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:04:22,957 INFO L495 AbstractCegarLoop]: Abstraction has 515 states and 747 transitions. [2022-11-02 21:04:22,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-02 21:04:22,957 INFO L276 IsEmpty]: Start isEmpty. Operand 515 states and 747 transitions. [2022-11-02 21:04:22,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-02 21:04:22,960 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:04:22,960 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:04:22,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 21:04:22,961 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:04:22,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:04:22,961 INFO L85 PathProgramCache]: Analyzing trace with hash 401422644, now seen corresponding path program 1 times [2022-11-02 21:04:22,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:04:22,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678646184] [2022-11-02 21:04:22,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:22,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:04:22,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:23,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 21:04:23,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:23,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 21:04:23,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:23,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-02 21:04:23,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:23,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:04:23,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:23,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-02 21:04:23,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:23,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-02 21:04:23,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:23,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-02 21:04:23,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:23,128 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 21:04:23,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:04:23,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678646184] [2022-11-02 21:04:23,129 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678646184] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:04:23,129 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:04:23,129 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-02 21:04:23,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98693786] [2022-11-02 21:04:23,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:04:23,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 21:04:23,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:04:23,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 21:04:23,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-11-02 21:04:23,131 INFO L87 Difference]: Start difference. First operand 515 states and 747 transitions. Second operand has 10 states, 10 states have (on average 5.0) internal successors, (50), 7 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2022-11-02 21:04:25,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:04:25,311 INFO L93 Difference]: Finished difference Result 1847 states and 2593 transitions. [2022-11-02 21:04:25,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-02 21:04:25,311 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 7 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 65 [2022-11-02 21:04:25,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:04:25,323 INFO L225 Difference]: With dead ends: 1847 [2022-11-02 21:04:25,324 INFO L226 Difference]: Without dead ends: 1562 [2022-11-02 21:04:25,331 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=257, Invalid=1075, Unknown=0, NotChecked=0, Total=1332 [2022-11-02 21:04:25,335 INFO L413 NwaCegarLoop]: 577 mSDtfsCounter, 2860 mSDsluCounter, 1304 mSDsCounter, 0 mSdLazyCounter, 1429 mSolverCounterSat, 656 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2874 SdHoareTripleChecker+Valid, 1881 SdHoareTripleChecker+Invalid, 2085 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 656 IncrementalHoareTripleChecker+Valid, 1429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-02 21:04:25,338 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2874 Valid, 1881 Invalid, 2085 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [656 Valid, 1429 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-02 21:04:25,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1562 states. [2022-11-02 21:04:25,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1562 to 1401. [2022-11-02 21:04:25,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1401 states, 1129 states have (on average 1.3808680248007086) internal successors, (1559), 1152 states have internal predecessors, (1559), 144 states have call successors, (144), 111 states have call predecessors, (144), 126 states have return successors, (178), 140 states have call predecessors, (178), 142 states have call successors, (178) [2022-11-02 21:04:25,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1401 states to 1401 states and 1881 transitions. [2022-11-02 21:04:25,479 INFO L78 Accepts]: Start accepts. Automaton has 1401 states and 1881 transitions. Word has length 65 [2022-11-02 21:04:25,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:04:25,480 INFO L495 AbstractCegarLoop]: Abstraction has 1401 states and 1881 transitions. [2022-11-02 21:04:25,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 7 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2022-11-02 21:04:25,480 INFO L276 IsEmpty]: Start isEmpty. Operand 1401 states and 1881 transitions. [2022-11-02 21:04:25,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-02 21:04:25,482 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:04:25,482 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:04:25,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 21:04:25,482 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:04:25,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:04:25,483 INFO L85 PathProgramCache]: Analyzing trace with hash 1452871733, now seen corresponding path program 1 times [2022-11-02 21:04:25,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:04:25,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393882774] [2022-11-02 21:04:25,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:25,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:04:25,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:25,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 21:04:25,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:25,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 21:04:25,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:25,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-02 21:04:25,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:25,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:04:25,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:25,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-02 21:04:25,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:25,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-02 21:04:25,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:25,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-02 21:04:25,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:25,730 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 21:04:25,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:04:25,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393882774] [2022-11-02 21:04:25,731 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393882774] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:04:25,731 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:04:25,731 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-02 21:04:25,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745879971] [2022-11-02 21:04:25,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:04:25,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 21:04:25,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:04:25,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 21:04:25,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-02 21:04:25,733 INFO L87 Difference]: Start difference. First operand 1401 states and 1881 transitions. Second operand has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-02 21:04:26,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:04:26,979 INFO L93 Difference]: Finished difference Result 2730 states and 3631 transitions. [2022-11-02 21:04:26,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-02 21:04:26,979 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 65 [2022-11-02 21:04:26,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:04:26,989 INFO L225 Difference]: With dead ends: 2730 [2022-11-02 21:04:26,989 INFO L226 Difference]: Without dead ends: 1565 [2022-11-02 21:04:26,991 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-11-02 21:04:27,001 INFO L413 NwaCegarLoop]: 467 mSDtfsCounter, 404 mSDsluCounter, 1617 mSDsCounter, 0 mSdLazyCounter, 1166 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 406 SdHoareTripleChecker+Valid, 2084 SdHoareTripleChecker+Invalid, 1250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 1166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:04:27,003 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [406 Valid, 2084 Invalid, 1250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 1166 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-02 21:04:27,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1565 states. [2022-11-02 21:04:27,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1565 to 1431. [2022-11-02 21:04:27,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1431 states, 1153 states have (on average 1.3660017346053772) internal successors, (1575), 1176 states have internal predecessors, (1575), 144 states have call successors, (144), 111 states have call predecessors, (144), 132 states have return successors, (184), 146 states have call predecessors, (184), 142 states have call successors, (184) [2022-11-02 21:04:27,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1431 states to 1431 states and 1903 transitions. [2022-11-02 21:04:27,136 INFO L78 Accepts]: Start accepts. Automaton has 1431 states and 1903 transitions. Word has length 65 [2022-11-02 21:04:27,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:04:27,136 INFO L495 AbstractCegarLoop]: Abstraction has 1431 states and 1903 transitions. [2022-11-02 21:04:27,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-02 21:04:27,137 INFO L276 IsEmpty]: Start isEmpty. Operand 1431 states and 1903 transitions. [2022-11-02 21:04:27,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-02 21:04:27,139 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:04:27,139 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:04:27,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-02 21:04:27,140 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:04:27,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:04:27,140 INFO L85 PathProgramCache]: Analyzing trace with hash -1455892169, now seen corresponding path program 1 times [2022-11-02 21:04:27,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:04:27,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810248907] [2022-11-02 21:04:27,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:27,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:04:27,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:27,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 21:04:27,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:27,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 21:04:27,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:27,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-02 21:04:27,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:27,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:04:27,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:27,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-02 21:04:27,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:27,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-02 21:04:27,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:27,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-02 21:04:27,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:27,360 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 21:04:27,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:04:27,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810248907] [2022-11-02 21:04:27,361 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810248907] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:04:27,361 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:04:27,361 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 21:04:27,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653871727] [2022-11-02 21:04:27,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:04:27,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 21:04:27,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:04:27,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 21:04:27,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:04:27,363 INFO L87 Difference]: Start difference. First operand 1431 states and 1903 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-02 21:04:28,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:04:28,609 INFO L93 Difference]: Finished difference Result 2780 states and 3605 transitions. [2022-11-02 21:04:28,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-02 21:04:28,610 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-11-02 21:04:28,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:04:28,618 INFO L225 Difference]: With dead ends: 2780 [2022-11-02 21:04:28,618 INFO L226 Difference]: Without dead ends: 1808 [2022-11-02 21:04:28,622 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=113, Invalid=307, Unknown=0, NotChecked=0, Total=420 [2022-11-02 21:04:28,623 INFO L413 NwaCegarLoop]: 481 mSDtfsCounter, 1197 mSDsluCounter, 925 mSDsCounter, 0 mSdLazyCounter, 946 mSolverCounterSat, 203 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1220 SdHoareTripleChecker+Valid, 1406 SdHoareTripleChecker+Invalid, 1149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 203 IncrementalHoareTripleChecker+Valid, 946 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-02 21:04:28,624 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1220 Valid, 1406 Invalid, 1149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [203 Valid, 946 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-02 21:04:28,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1808 states. [2022-11-02 21:04:28,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1808 to 1373. [2022-11-02 21:04:28,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1373 states, 1111 states have (on average 1.3636363636363635) internal successors, (1515), 1129 states have internal predecessors, (1515), 138 states have call successors, (138), 106 states have call predecessors, (138), 122 states have return successors, (169), 139 states have call predecessors, (169), 136 states have call successors, (169) [2022-11-02 21:04:28,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1373 states to 1373 states and 1822 transitions. [2022-11-02 21:04:28,725 INFO L78 Accepts]: Start accepts. Automaton has 1373 states and 1822 transitions. Word has length 65 [2022-11-02 21:04:28,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:04:28,726 INFO L495 AbstractCegarLoop]: Abstraction has 1373 states and 1822 transitions. [2022-11-02 21:04:28,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-02 21:04:28,726 INFO L276 IsEmpty]: Start isEmpty. Operand 1373 states and 1822 transitions. [2022-11-02 21:04:28,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-02 21:04:28,728 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:04:28,728 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:04:28,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-02 21:04:28,729 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:04:28,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:04:28,729 INFO L85 PathProgramCache]: Analyzing trace with hash -1589905675, now seen corresponding path program 1 times [2022-11-02 21:04:28,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:04:28,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080906796] [2022-11-02 21:04:28,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:28,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:04:28,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:28,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 21:04:28,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:28,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 21:04:28,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:28,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-02 21:04:28,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:28,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:04:28,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:28,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-02 21:04:28,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:28,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-02 21:04:28,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:28,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-02 21:04:28,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:28,855 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 21:04:28,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:04:28,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080906796] [2022-11-02 21:04:28,856 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080906796] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:04:28,856 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:04:28,856 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:04:28,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480103687] [2022-11-02 21:04:28,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:04:28,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:04:28,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:04:28,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:04:28,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:04:28,858 INFO L87 Difference]: Start difference. First operand 1373 states and 1822 transitions. Second operand has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-02 21:04:29,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:04:29,569 INFO L93 Difference]: Finished difference Result 3727 states and 4840 transitions. [2022-11-02 21:04:29,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-02 21:04:29,570 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-11-02 21:04:29,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:04:29,583 INFO L225 Difference]: With dead ends: 3727 [2022-11-02 21:04:29,584 INFO L226 Difference]: Without dead ends: 2591 [2022-11-02 21:04:29,586 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2022-11-02 21:04:29,589 INFO L413 NwaCegarLoop]: 452 mSDtfsCounter, 1155 mSDsluCounter, 697 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 182 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1182 SdHoareTripleChecker+Valid, 1149 SdHoareTripleChecker+Invalid, 496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 182 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 21:04:29,589 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1182 Valid, 1149 Invalid, 496 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [182 Valid, 314 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 21:04:29,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2591 states. [2022-11-02 21:04:29,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2591 to 2471. [2022-11-02 21:04:29,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2471 states, 1950 states have (on average 1.303076923076923) internal successors, (2541), 1992 states have internal predecessors, (2541), 268 states have call successors, (268), 205 states have call predecessors, (268), 251 states have return successors, (381), 276 states have call predecessors, (381), 266 states have call successors, (381) [2022-11-02 21:04:29,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2471 states to 2471 states and 3190 transitions. [2022-11-02 21:04:29,783 INFO L78 Accepts]: Start accepts. Automaton has 2471 states and 3190 transitions. Word has length 65 [2022-11-02 21:04:29,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:04:29,783 INFO L495 AbstractCegarLoop]: Abstraction has 2471 states and 3190 transitions. [2022-11-02 21:04:29,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-02 21:04:29,784 INFO L276 IsEmpty]: Start isEmpty. Operand 2471 states and 3190 transitions. [2022-11-02 21:04:29,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-02 21:04:29,785 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:04:29,785 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:04:29,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-02 21:04:29,785 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:04:29,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:04:29,786 INFO L85 PathProgramCache]: Analyzing trace with hash -1359463327, now seen corresponding path program 1 times [2022-11-02 21:04:29,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:04:29,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628044837] [2022-11-02 21:04:29,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:29,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:04:29,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:29,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 21:04:29,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:29,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 21:04:29,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:29,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-02 21:04:29,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:29,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:04:29,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:29,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-02 21:04:29,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:29,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-02 21:04:29,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:29,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-02 21:04:29,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:29,914 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 21:04:29,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:04:29,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628044837] [2022-11-02 21:04:29,914 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628044837] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:04:29,915 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:04:29,915 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 21:04:29,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003830287] [2022-11-02 21:04:29,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:04:29,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 21:04:29,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:04:29,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 21:04:29,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-02 21:04:29,917 INFO L87 Difference]: Start difference. First operand 2471 states and 3190 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-02 21:04:30,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:04:30,795 INFO L93 Difference]: Finished difference Result 5865 states and 7498 transitions. [2022-11-02 21:04:30,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 21:04:30,796 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 66 [2022-11-02 21:04:30,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:04:30,816 INFO L225 Difference]: With dead ends: 5865 [2022-11-02 21:04:30,816 INFO L226 Difference]: Without dead ends: 3636 [2022-11-02 21:04:30,821 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-11-02 21:04:30,823 INFO L413 NwaCegarLoop]: 481 mSDtfsCounter, 575 mSDsluCounter, 853 mSDsCounter, 0 mSdLazyCounter, 460 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 584 SdHoareTripleChecker+Valid, 1334 SdHoareTripleChecker+Invalid, 579 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-02 21:04:30,823 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [584 Valid, 1334 Invalid, 579 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 460 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-02 21:04:30,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3636 states. [2022-11-02 21:04:31,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3636 to 3305. [2022-11-02 21:04:31,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3305 states, 2595 states have (on average 1.2882466281310212) internal successors, (3343), 2644 states have internal predecessors, (3343), 364 states have call successors, (364), 285 states have call predecessors, (364), 344 states have return successors, (500), 378 states have call predecessors, (500), 362 states have call successors, (500) [2022-11-02 21:04:31,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3305 states to 3305 states and 4207 transitions. [2022-11-02 21:04:31,129 INFO L78 Accepts]: Start accepts. Automaton has 3305 states and 4207 transitions. Word has length 66 [2022-11-02 21:04:31,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:04:31,130 INFO L495 AbstractCegarLoop]: Abstraction has 3305 states and 4207 transitions. [2022-11-02 21:04:31,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-02 21:04:31,131 INFO L276 IsEmpty]: Start isEmpty. Operand 3305 states and 4207 transitions. [2022-11-02 21:04:31,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-11-02 21:04:31,136 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:04:31,136 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:04:31,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-02 21:04:31,137 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:04:31,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:04:31,137 INFO L85 PathProgramCache]: Analyzing trace with hash -1540190304, now seen corresponding path program 1 times [2022-11-02 21:04:31,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:04:31,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605665725] [2022-11-02 21:04:31,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:31,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:04:31,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:31,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 21:04:31,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:31,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 21:04:31,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:31,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-02 21:04:31,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:31,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:04:31,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:31,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-02 21:04:31,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:31,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-02 21:04:31,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:31,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-02 21:04:31,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:31,251 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 21:04:31,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:04:31,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605665725] [2022-11-02 21:04:31,252 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605665725] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:04:31,252 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:04:31,252 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 21:04:31,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804353022] [2022-11-02 21:04:31,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:04:31,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 21:04:31,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:04:31,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 21:04:31,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-02 21:04:31,256 INFO L87 Difference]: Start difference. First operand 3305 states and 4207 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-02 21:04:31,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:04:31,918 INFO L93 Difference]: Finished difference Result 7291 states and 9206 transitions. [2022-11-02 21:04:31,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 21:04:31,919 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 72 [2022-11-02 21:04:31,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:04:31,943 INFO L225 Difference]: With dead ends: 7291 [2022-11-02 21:04:31,944 INFO L226 Difference]: Without dead ends: 4226 [2022-11-02 21:04:31,951 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-11-02 21:04:31,952 INFO L413 NwaCegarLoop]: 497 mSDtfsCounter, 1119 mSDsluCounter, 488 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1147 SdHoareTripleChecker+Valid, 985 SdHoareTripleChecker+Invalid, 403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 21:04:31,953 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1147 Valid, 985 Invalid, 403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [161 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 21:04:31,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4226 states. [2022-11-02 21:04:32,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4226 to 3880. [2022-11-02 21:04:32,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3880 states, 3050 states have (on average 1.280983606557377) internal successors, (3907), 3103 states have internal predecessors, (3907), 423 states have call successors, (423), 335 states have call predecessors, (423), 405 states have return successors, (582), 444 states have call predecessors, (582), 421 states have call successors, (582) [2022-11-02 21:04:32,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3880 states to 3880 states and 4912 transitions. [2022-11-02 21:04:32,256 INFO L78 Accepts]: Start accepts. Automaton has 3880 states and 4912 transitions. Word has length 72 [2022-11-02 21:04:32,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:04:32,257 INFO L495 AbstractCegarLoop]: Abstraction has 3880 states and 4912 transitions. [2022-11-02 21:04:32,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-02 21:04:32,257 INFO L276 IsEmpty]: Start isEmpty. Operand 3880 states and 4912 transitions. [2022-11-02 21:04:32,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-02 21:04:32,259 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:04:32,259 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:04:32,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-02 21:04:32,260 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:04:32,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:04:32,260 INFO L85 PathProgramCache]: Analyzing trace with hash -1017748717, now seen corresponding path program 1 times [2022-11-02 21:04:32,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:04:32,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436440242] [2022-11-02 21:04:32,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:32,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:04:32,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:32,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 21:04:32,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:32,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 21:04:32,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:32,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-02 21:04:32,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:32,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:04:32,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:32,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-02 21:04:32,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:32,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-02 21:04:32,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:32,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-02 21:04:32,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:32,383 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:04:32,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:04:32,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436440242] [2022-11-02 21:04:32,384 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436440242] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:04:32,384 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:04:32,384 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:04:32,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038669296] [2022-11-02 21:04:32,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:04:32,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:04:32,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:04:32,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:04:32,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:04:32,386 INFO L87 Difference]: Start difference. First operand 3880 states and 4912 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-02 21:04:33,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:04:33,278 INFO L93 Difference]: Finished difference Result 5062 states and 6368 transitions. [2022-11-02 21:04:33,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 21:04:33,279 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 73 [2022-11-02 21:04:33,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:04:33,301 INFO L225 Difference]: With dead ends: 5062 [2022-11-02 21:04:33,301 INFO L226 Difference]: Without dead ends: 5059 [2022-11-02 21:04:33,304 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2022-11-02 21:04:33,305 INFO L413 NwaCegarLoop]: 488 mSDtfsCounter, 1353 mSDsluCounter, 691 mSDsCounter, 0 mSdLazyCounter, 324 mSolverCounterSat, 253 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1362 SdHoareTripleChecker+Valid, 1179 SdHoareTripleChecker+Invalid, 577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 253 IncrementalHoareTripleChecker+Valid, 324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 21:04:33,305 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1362 Valid, 1179 Invalid, 577 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [253 Valid, 324 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 21:04:33,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5059 states. [2022-11-02 21:04:33,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5059 to 4347. [2022-11-02 21:04:33,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4347 states, 3407 states have (on average 1.2717933665981802) internal successors, (4333), 3464 states have internal predecessors, (4333), 476 states have call successors, (476), 379 states have call predecessors, (476), 462 states have return successors, (664), 506 states have call predecessors, (664), 475 states have call successors, (664) [2022-11-02 21:04:33,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4347 states to 4347 states and 5473 transitions. [2022-11-02 21:04:33,681 INFO L78 Accepts]: Start accepts. Automaton has 4347 states and 5473 transitions. Word has length 73 [2022-11-02 21:04:33,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:04:33,681 INFO L495 AbstractCegarLoop]: Abstraction has 4347 states and 5473 transitions. [2022-11-02 21:04:33,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-02 21:04:33,682 INFO L276 IsEmpty]: Start isEmpty. Operand 4347 states and 5473 transitions. [2022-11-02 21:04:33,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-02 21:04:33,683 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:04:33,683 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:04:33,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-02 21:04:33,684 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:04:33,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:04:33,684 INFO L85 PathProgramCache]: Analyzing trace with hash -1486432694, now seen corresponding path program 1 times [2022-11-02 21:04:33,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:04:33,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381398962] [2022-11-02 21:04:33,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:33,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:04:33,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:33,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 21:04:33,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:33,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 21:04:33,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:33,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-02 21:04:33,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:33,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:04:33,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:33,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-02 21:04:33,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:33,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-02 21:04:33,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:33,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-02 21:04:33,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:33,846 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:04:33,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:04:33,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381398962] [2022-11-02 21:04:33,847 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381398962] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:04:33,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [510006871] [2022-11-02 21:04:33,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:33,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:04:33,848 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50522614-0071-48a0-8f7a-ae82a599d7df/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:04:33,852 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50522614-0071-48a0-8f7a-ae82a599d7df/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:04:33,878 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50522614-0071-48a0-8f7a-ae82a599d7df/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-02 21:04:33,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:33,986 INFO L263 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 21:04:33,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:04:34,470 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:04:34,471 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:04:34,680 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:04:34,680 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [510006871] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:04:34,680 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 21:04:34,680 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 4] total 10 [2022-11-02 21:04:34,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788394649] [2022-11-02 21:04:34,681 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 21:04:34,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 21:04:34,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:04:34,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 21:04:34,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-02 21:04:34,682 INFO L87 Difference]: Start difference. First operand 4347 states and 5473 transitions. Second operand has 10 states, 10 states have (on average 12.0) internal successors, (120), 7 states have internal predecessors, (120), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-11-02 21:04:37,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:04:37,382 INFO L93 Difference]: Finished difference Result 8888 states and 11081 transitions. [2022-11-02 21:04:37,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-02 21:04:37,383 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.0) internal successors, (120), 7 states have internal predecessors, (120), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 74 [2022-11-02 21:04:37,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:04:37,443 INFO L225 Difference]: With dead ends: 8888 [2022-11-02 21:04:37,457 INFO L226 Difference]: Without dead ends: 8885 [2022-11-02 21:04:37,461 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 173 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=163, Invalid=593, Unknown=0, NotChecked=0, Total=756 [2022-11-02 21:04:37,462 INFO L413 NwaCegarLoop]: 653 mSDtfsCounter, 1572 mSDsluCounter, 1441 mSDsCounter, 0 mSdLazyCounter, 1844 mSolverCounterSat, 253 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1629 SdHoareTripleChecker+Valid, 2094 SdHoareTripleChecker+Invalid, 2097 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 253 IncrementalHoareTripleChecker+Valid, 1844 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-02 21:04:37,463 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1629 Valid, 2094 Invalid, 2097 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [253 Valid, 1844 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-02 21:04:37,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8885 states. [2022-11-02 21:04:38,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8885 to 7816. [2022-11-02 21:04:38,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7816 states, 6109 states have (on average 1.2594532656735964) internal successors, (7694), 6210 states have internal predecessors, (7694), 855 states have call successors, (855), 693 states have call predecessors, (855), 850 states have return successors, (1201), 915 states have call predecessors, (1201), 854 states have call successors, (1201) [2022-11-02 21:04:38,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7816 states to 7816 states and 9750 transitions. [2022-11-02 21:04:38,237 INFO L78 Accepts]: Start accepts. Automaton has 7816 states and 9750 transitions. Word has length 74 [2022-11-02 21:04:38,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:04:38,237 INFO L495 AbstractCegarLoop]: Abstraction has 7816 states and 9750 transitions. [2022-11-02 21:04:38,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.0) internal successors, (120), 7 states have internal predecessors, (120), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-11-02 21:04:38,239 INFO L276 IsEmpty]: Start isEmpty. Operand 7816 states and 9750 transitions. [2022-11-02 21:04:38,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-02 21:04:38,240 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:04:38,241 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:04:38,282 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50522614-0071-48a0-8f7a-ae82a599d7df/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-02 21:04:38,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50522614-0071-48a0-8f7a-ae82a599d7df/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-02 21:04:38,455 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:04:38,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:04:38,455 INFO L85 PathProgramCache]: Analyzing trace with hash 1906520915, now seen corresponding path program 2 times [2022-11-02 21:04:38,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:04:38,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890338758] [2022-11-02 21:04:38,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:38,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:04:38,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:38,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 21:04:38,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:38,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 21:04:38,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:38,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-02 21:04:38,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:38,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:04:38,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:38,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-02 21:04:38,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:38,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-02 21:04:38,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:38,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-02 21:04:38,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:38,536 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:04:38,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:04:38,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890338758] [2022-11-02 21:04:38,536 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890338758] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:04:38,537 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:04:38,537 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 21:04:38,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443436612] [2022-11-02 21:04:38,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:04:38,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 21:04:38,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:04:38,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 21:04:38,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-02 21:04:38,539 INFO L87 Difference]: Start difference. First operand 7816 states and 9750 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-02 21:04:39,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:04:39,319 INFO L93 Difference]: Finished difference Result 10526 states and 13162 transitions. [2022-11-02 21:04:39,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 21:04:39,320 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 77 [2022-11-02 21:04:39,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:04:39,340 INFO L225 Difference]: With dead ends: 10526 [2022-11-02 21:04:39,340 INFO L226 Difference]: Without dead ends: 4309 [2022-11-02 21:04:39,351 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-11-02 21:04:39,352 INFO L413 NwaCegarLoop]: 528 mSDtfsCounter, 1013 mSDsluCounter, 509 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1042 SdHoareTripleChecker+Valid, 1037 SdHoareTripleChecker+Invalid, 389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 21:04:39,352 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1042 Valid, 1037 Invalid, 389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 21:04:39,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4309 states. [2022-11-02 21:04:39,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4309 to 3192. [2022-11-02 21:04:39,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3192 states, 2517 states have (on average 1.2590385379419944) internal successors, (3169), 2552 states have internal predecessors, (3169), 348 states have call successors, (348), 275 states have call predecessors, (348), 325 states have return successors, (460), 367 states have call predecessors, (460), 347 states have call successors, (460) [2022-11-02 21:04:39,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3192 states to 3192 states and 3977 transitions. [2022-11-02 21:04:39,771 INFO L78 Accepts]: Start accepts. Automaton has 3192 states and 3977 transitions. Word has length 77 [2022-11-02 21:04:39,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:04:39,772 INFO L495 AbstractCegarLoop]: Abstraction has 3192 states and 3977 transitions. [2022-11-02 21:04:39,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-02 21:04:39,772 INFO L276 IsEmpty]: Start isEmpty. Operand 3192 states and 3977 transitions. [2022-11-02 21:04:39,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-11-02 21:04:39,775 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:04:39,776 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:04:39,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-02 21:04:39,776 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:04:39,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:04:39,777 INFO L85 PathProgramCache]: Analyzing trace with hash -1402994660, now seen corresponding path program 1 times [2022-11-02 21:04:39,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:04:39,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666595231] [2022-11-02 21:04:39,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:39,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:04:39,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:39,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 21:04:39,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:39,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 21:04:39,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:39,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-02 21:04:39,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:39,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:04:39,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:39,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-02 21:04:39,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:39,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-02 21:04:39,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:39,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-02 21:04:39,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:39,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-02 21:04:39,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:39,955 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 21:04:39,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:04:39,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666595231] [2022-11-02 21:04:39,956 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666595231] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:04:39,956 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:04:39,956 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 21:04:39,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232481205] [2022-11-02 21:04:39,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:04:39,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 21:04:39,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:04:39,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 21:04:39,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:04:39,958 INFO L87 Difference]: Start difference. First operand 3192 states and 3977 transitions. Second operand has 8 states, 8 states have (on average 7.875) internal successors, (63), 5 states have internal predecessors, (63), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-02 21:04:41,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:04:41,761 INFO L93 Difference]: Finished difference Result 9248 states and 11441 transitions. [2022-11-02 21:04:41,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-02 21:04:41,761 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 5 states have internal predecessors, (63), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 84 [2022-11-02 21:04:41,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:04:41,804 INFO L225 Difference]: With dead ends: 9248 [2022-11-02 21:04:41,805 INFO L226 Difference]: Without dead ends: 5433 [2022-11-02 21:04:41,815 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=142, Invalid=364, Unknown=0, NotChecked=0, Total=506 [2022-11-02 21:04:41,816 INFO L413 NwaCegarLoop]: 523 mSDtfsCounter, 1136 mSDsluCounter, 1183 mSDsCounter, 0 mSdLazyCounter, 891 mSolverCounterSat, 294 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1147 SdHoareTripleChecker+Valid, 1706 SdHoareTripleChecker+Invalid, 1185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 294 IncrementalHoareTripleChecker+Valid, 891 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-02 21:04:41,816 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1147 Valid, 1706 Invalid, 1185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [294 Valid, 891 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-02 21:04:41,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5433 states. [2022-11-02 21:04:42,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5433 to 5086. [2022-11-02 21:04:42,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5086 states, 3956 states have (on average 1.2287664307381194) internal successors, (4861), 4022 states have internal predecessors, (4861), 566 states have call successors, (566), 447 states have call predecessors, (566), 562 states have return successors, (854), 619 states have call predecessors, (854), 565 states have call successors, (854) [2022-11-02 21:04:42,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5086 states to 5086 states and 6281 transitions. [2022-11-02 21:04:42,354 INFO L78 Accepts]: Start accepts. Automaton has 5086 states and 6281 transitions. Word has length 84 [2022-11-02 21:04:42,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:04:42,355 INFO L495 AbstractCegarLoop]: Abstraction has 5086 states and 6281 transitions. [2022-11-02 21:04:42,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 5 states have internal predecessors, (63), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-02 21:04:42,355 INFO L276 IsEmpty]: Start isEmpty. Operand 5086 states and 6281 transitions. [2022-11-02 21:04:42,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-11-02 21:04:42,358 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:04:42,359 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:04:42,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-02 21:04:42,359 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:04:42,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:04:42,360 INFO L85 PathProgramCache]: Analyzing trace with hash 1990740177, now seen corresponding path program 1 times [2022-11-02 21:04:42,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:04:42,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025703122] [2022-11-02 21:04:42,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:42,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:04:42,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:42,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 21:04:42,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:42,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 21:04:42,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:42,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-02 21:04:42,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:42,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:04:42,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:42,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-02 21:04:42,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:42,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-02 21:04:42,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:42,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-02 21:04:42,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:42,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-02 21:04:42,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:42,509 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-02 21:04:42,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:04:42,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025703122] [2022-11-02 21:04:42,510 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025703122] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:04:42,510 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:04:42,510 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-02 21:04:42,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586616074] [2022-11-02 21:04:42,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:04:42,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 21:04:42,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:04:42,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 21:04:42,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-11-02 21:04:42,512 INFO L87 Difference]: Start difference. First operand 5086 states and 6281 transitions. Second operand has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-02 21:04:44,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:04:44,218 INFO L93 Difference]: Finished difference Result 9442 states and 11544 transitions. [2022-11-02 21:04:44,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-02 21:04:44,219 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 93 [2022-11-02 21:04:44,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:04:44,240 INFO L225 Difference]: With dead ends: 9442 [2022-11-02 21:04:44,240 INFO L226 Difference]: Without dead ends: 5165 [2022-11-02 21:04:44,250 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=162, Invalid=540, Unknown=0, NotChecked=0, Total=702 [2022-11-02 21:04:44,251 INFO L413 NwaCegarLoop]: 514 mSDtfsCounter, 2088 mSDsluCounter, 979 mSDsCounter, 0 mSdLazyCounter, 1015 mSolverCounterSat, 469 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2121 SdHoareTripleChecker+Valid, 1493 SdHoareTripleChecker+Invalid, 1484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 469 IncrementalHoareTripleChecker+Valid, 1015 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:04:44,251 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2121 Valid, 1493 Invalid, 1484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [469 Valid, 1015 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-02 21:04:44,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5165 states. [2022-11-02 21:04:44,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5165 to 4794. [2022-11-02 21:04:44,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4794 states, 3712 states have (on average 1.2074353448275863) internal successors, (4482), 3780 states have internal predecessors, (4482), 536 states have call successors, (536), 429 states have call predecessors, (536), 544 states have return successors, (745), 587 states have call predecessors, (745), 535 states have call successors, (745) [2022-11-02 21:04:44,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4794 states to 4794 states and 5763 transitions. [2022-11-02 21:04:44,718 INFO L78 Accepts]: Start accepts. Automaton has 4794 states and 5763 transitions. Word has length 93 [2022-11-02 21:04:44,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:04:44,719 INFO L495 AbstractCegarLoop]: Abstraction has 4794 states and 5763 transitions. [2022-11-02 21:04:44,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-02 21:04:44,719 INFO L276 IsEmpty]: Start isEmpty. Operand 4794 states and 5763 transitions. [2022-11-02 21:04:44,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-11-02 21:04:44,723 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:04:44,723 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:04:44,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-02 21:04:44,723 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:04:44,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:04:44,724 INFO L85 PathProgramCache]: Analyzing trace with hash 991651678, now seen corresponding path program 1 times [2022-11-02 21:04:44,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:04:44,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337214722] [2022-11-02 21:04:44,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:44,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:04:44,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:44,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 21:04:44,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:44,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-02 21:04:44,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:44,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-02 21:04:44,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:44,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-02 21:04:44,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:44,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-02 21:04:44,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:44,828 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 21:04:44,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:04:44,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337214722] [2022-11-02 21:04:44,829 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337214722] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:04:44,829 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:04:44,830 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:04:44,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895140941] [2022-11-02 21:04:44,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:04:44,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:04:44,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:04:44,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:04:44,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:04:44,832 INFO L87 Difference]: Start difference. First operand 4794 states and 5763 transitions. Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 21:04:46,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:04:46,853 INFO L93 Difference]: Finished difference Result 5085 states and 6223 transitions. [2022-11-02 21:04:46,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:04:46,854 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2022-11-02 21:04:46,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:04:46,874 INFO L225 Difference]: With dead ends: 5085 [2022-11-02 21:04:46,875 INFO L226 Difference]: Without dead ends: 4870 [2022-11-02 21:04:46,878 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-02 21:04:46,879 INFO L413 NwaCegarLoop]: 505 mSDtfsCounter, 678 mSDsluCounter, 403 mSDsCounter, 0 mSdLazyCounter, 491 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 696 SdHoareTripleChecker+Valid, 908 SdHoareTripleChecker+Invalid, 571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 491 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-02 21:04:46,879 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [696 Valid, 908 Invalid, 571 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 491 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-02 21:04:46,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4870 states. [2022-11-02 21:04:47,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4870 to 4794. [2022-11-02 21:04:47,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4794 states, 3712 states have (on average 1.207165948275862) internal successors, (4481), 3780 states have internal predecessors, (4481), 536 states have call successors, (536), 429 states have call predecessors, (536), 544 states have return successors, (745), 587 states have call predecessors, (745), 535 states have call successors, (745) [2022-11-02 21:04:47,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4794 states to 4794 states and 5762 transitions. [2022-11-02 21:04:47,682 INFO L78 Accepts]: Start accepts. Automaton has 4794 states and 5762 transitions. Word has length 112 [2022-11-02 21:04:47,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:04:47,683 INFO L495 AbstractCegarLoop]: Abstraction has 4794 states and 5762 transitions. [2022-11-02 21:04:47,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 21:04:47,683 INFO L276 IsEmpty]: Start isEmpty. Operand 4794 states and 5762 transitions. [2022-11-02 21:04:47,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-11-02 21:04:47,686 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:04:47,686 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:04:47,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-02 21:04:47,687 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:04:47,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:04:47,688 INFO L85 PathProgramCache]: Analyzing trace with hash -1396912352, now seen corresponding path program 1 times [2022-11-02 21:04:47,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:04:47,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842686117] [2022-11-02 21:04:47,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:47,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:04:47,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:47,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 21:04:47,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:47,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-02 21:04:47,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:47,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-02 21:04:47,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:47,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-02 21:04:47,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:47,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-02 21:04:47,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:47,848 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 21:04:47,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:04:47,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842686117] [2022-11-02 21:04:47,849 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842686117] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:04:47,849 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:04:47,849 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:04:47,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889718712] [2022-11-02 21:04:47,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:04:47,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:04:47,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:04:47,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:04:47,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:04:47,851 INFO L87 Difference]: Start difference. First operand 4794 states and 5762 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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 21:04:51,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:04:51,016 INFO L93 Difference]: Finished difference Result 5391 states and 6718 transitions. [2022-11-02 21:04:51,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 21:04:51,017 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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 112 [2022-11-02 21:04:51,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:04:51,033 INFO L225 Difference]: With dead ends: 5391 [2022-11-02 21:04:51,034 INFO L226 Difference]: Without dead ends: 5178 [2022-11-02 21:04:51,037 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-02 21:04:51,038 INFO L413 NwaCegarLoop]: 699 mSDtfsCounter, 1035 mSDsluCounter, 1318 mSDsCounter, 0 mSdLazyCounter, 2048 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1058 SdHoareTripleChecker+Valid, 2017 SdHoareTripleChecker+Invalid, 2151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 2048 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:04:51,038 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1058 Valid, 2017 Invalid, 2151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 2048 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-02 21:04:51,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5178 states. [2022-11-02 21:04:51,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5178 to 5017. [2022-11-02 21:04:51,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5017 states, 3910 states have (on average 1.2255754475703324) internal successors, (4792), 3980 states have internal predecessors, (4792), 553 states have call successors, (553), 435 states have call predecessors, (553), 552 states have return successors, (769), 605 states have call predecessors, (769), 552 states have call successors, (769) [2022-11-02 21:04:51,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5017 states to 5017 states and 6114 transitions. [2022-11-02 21:04:51,783 INFO L78 Accepts]: Start accepts. Automaton has 5017 states and 6114 transitions. Word has length 112 [2022-11-02 21:04:51,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:04:51,784 INFO L495 AbstractCegarLoop]: Abstraction has 5017 states and 6114 transitions. [2022-11-02 21:04:51,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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 21:04:51,784 INFO L276 IsEmpty]: Start isEmpty. Operand 5017 states and 6114 transitions. [2022-11-02 21:04:51,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-11-02 21:04:51,788 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:04:51,788 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:04:51,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-02 21:04:51,788 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:04:51,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:04:51,789 INFO L85 PathProgramCache]: Analyzing trace with hash 1279080030, now seen corresponding path program 1 times [2022-11-02 21:04:51,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:04:51,789 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671815085] [2022-11-02 21:04:51,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:51,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:04:51,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:51,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 21:04:51,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:51,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-02 21:04:51,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:51,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-02 21:04:51,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:51,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-02 21:04:51,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:51,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-02 21:04:51,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:51,978 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 21:04:51,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:04:51,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671815085] [2022-11-02 21:04:51,979 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671815085] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:04:51,979 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:04:51,979 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:04:51,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193822819] [2022-11-02 21:04:51,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:04:51,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:04:51,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:04:51,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:04:51,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:04:51,981 INFO L87 Difference]: Start difference. First operand 5017 states and 6114 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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 21:04:55,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:04:55,074 INFO L93 Difference]: Finished difference Result 6150 states and 7910 transitions. [2022-11-02 21:04:55,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 21:04:55,075 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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 112 [2022-11-02 21:04:55,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:04:55,102 INFO L225 Difference]: With dead ends: 6150 [2022-11-02 21:04:55,102 INFO L226 Difference]: Without dead ends: 5716 [2022-11-02 21:04:55,108 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-02 21:04:55,109 INFO L413 NwaCegarLoop]: 646 mSDtfsCounter, 1059 mSDsluCounter, 1255 mSDsCounter, 0 mSdLazyCounter, 1952 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1082 SdHoareTripleChecker+Valid, 1901 SdHoareTripleChecker+Invalid, 2062 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 1952 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-02 21:04:55,109 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1082 Valid, 1901 Invalid, 2062 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 1952 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-02 21:04:55,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5716 states. [2022-11-02 21:04:55,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5716 to 5427. [2022-11-02 21:04:55,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5427 states, 4276 states have (on average 1.2523386342376053) internal successors, (5355), 4348 states have internal predecessors, (5355), 583 states have call successors, (583), 447 states have call predecessors, (583), 566 states have return successors, (809), 637 states have call predecessors, (809), 582 states have call successors, (809) [2022-11-02 21:04:55,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5427 states to 5427 states and 6747 transitions. [2022-11-02 21:04:55,939 INFO L78 Accepts]: Start accepts. Automaton has 5427 states and 6747 transitions. Word has length 112 [2022-11-02 21:04:55,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:04:55,940 INFO L495 AbstractCegarLoop]: Abstraction has 5427 states and 6747 transitions. [2022-11-02 21:04:55,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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 21:04:55,940 INFO L276 IsEmpty]: Start isEmpty. Operand 5427 states and 6747 transitions. [2022-11-02 21:04:55,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-11-02 21:04:55,944 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:04:55,944 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:04:55,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-02 21:04:55,944 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:04:55,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:04:55,945 INFO L85 PathProgramCache]: Analyzing trace with hash 395571040, now seen corresponding path program 1 times [2022-11-02 21:04:55,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:04:55,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682216338] [2022-11-02 21:04:55,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:55,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:04:55,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:56,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 21:04:56,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:56,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-02 21:04:56,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:56,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-02 21:04:56,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:56,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-02 21:04:56,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:56,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-02 21:04:56,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:56,138 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 21:04:56,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:04:56,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682216338] [2022-11-02 21:04:56,139 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682216338] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:04:56,139 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:04:56,139 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:04:56,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056864335] [2022-11-02 21:04:56,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:04:56,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:04:56,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:04:56,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:04:56,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:04:56,141 INFO L87 Difference]: Start difference. First operand 5427 states and 6747 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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 21:04:59,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:04:59,340 INFO L93 Difference]: Finished difference Result 7634 states and 10235 transitions. [2022-11-02 21:04:59,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 21:04:59,341 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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 112 [2022-11-02 21:04:59,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:04:59,365 INFO L225 Difference]: With dead ends: 7634 [2022-11-02 21:04:59,365 INFO L226 Difference]: Without dead ends: 6790 [2022-11-02 21:04:59,372 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-02 21:04:59,373 INFO L413 NwaCegarLoop]: 690 mSDtfsCounter, 1034 mSDsluCounter, 1318 mSDsCounter, 0 mSdLazyCounter, 2044 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1057 SdHoareTripleChecker+Valid, 2008 SdHoareTripleChecker+Invalid, 2150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 2044 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:04:59,373 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1057 Valid, 2008 Invalid, 2150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 2044 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-11-02 21:04:59,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6790 states. [2022-11-02 21:05:00,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6790 to 6249. [2022-11-02 21:05:00,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6249 states, 5010 states have (on average 1.2940119760479043) internal successors, (6483), 5086 states have internal predecessors, (6483), 643 states have call successors, (643), 471 states have call predecessors, (643), 594 states have return successors, (895), 701 states have call predecessors, (895), 642 states have call successors, (895) [2022-11-02 21:05:00,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6249 states to 6249 states and 8021 transitions. [2022-11-02 21:05:00,215 INFO L78 Accepts]: Start accepts. Automaton has 6249 states and 8021 transitions. Word has length 112 [2022-11-02 21:05:00,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:05:00,216 INFO L495 AbstractCegarLoop]: Abstraction has 6249 states and 8021 transitions. [2022-11-02 21:05:00,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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 21:05:00,216 INFO L276 IsEmpty]: Start isEmpty. Operand 6249 states and 8021 transitions. [2022-11-02 21:05:00,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-11-02 21:05:00,221 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:05:00,221 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:05:00,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-02 21:05:00,221 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:05:00,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:05:00,222 INFO L85 PathProgramCache]: Analyzing trace with hash 367070750, now seen corresponding path program 1 times [2022-11-02 21:05:00,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:05:00,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745166432] [2022-11-02 21:05:00,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:05:00,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:05:00,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:00,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 21:05:00,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:00,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-02 21:05:00,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:00,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-02 21:05:00,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:00,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-02 21:05:00,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:00,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-02 21:05:00,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:00,382 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 21:05:00,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:05:00,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745166432] [2022-11-02 21:05:00,383 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745166432] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:05:00,383 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:05:00,383 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:05:00,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987726406] [2022-11-02 21:05:00,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:05:00,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:05:00,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:05:00,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:05:00,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:05:00,385 INFO L87 Difference]: Start difference. First operand 6249 states and 8021 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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 21:05:03,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:05:03,633 INFO L93 Difference]: Finished difference Result 10600 states and 14899 transitions. [2022-11-02 21:05:03,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 21:05:03,633 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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 112 [2022-11-02 21:05:03,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:05:03,664 INFO L225 Difference]: With dead ends: 10600 [2022-11-02 21:05:03,665 INFO L226 Difference]: Without dead ends: 8934 [2022-11-02 21:05:03,675 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-02 21:05:03,676 INFO L413 NwaCegarLoop]: 687 mSDtfsCounter, 1034 mSDsluCounter, 1318 mSDsCounter, 0 mSdLazyCounter, 2038 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1057 SdHoareTripleChecker+Valid, 2005 SdHoareTripleChecker+Invalid, 2144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 2038 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-02 21:05:03,676 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1057 Valid, 2005 Invalid, 2144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 2038 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-02 21:05:03,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8934 states. [2022-11-02 21:05:04,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8934 to 7899. [2022-11-02 21:05:04,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7899 states, 6484 states have (on average 1.3490129549660703) internal successors, (8747), 6568 states have internal predecessors, (8747), 763 states have call successors, (763), 519 states have call predecessors, (763), 650 states have return successors, (1085), 829 states have call predecessors, (1085), 762 states have call successors, (1085) [2022-11-02 21:05:04,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7899 states to 7899 states and 10595 transitions. [2022-11-02 21:05:04,850 INFO L78 Accepts]: Start accepts. Automaton has 7899 states and 10595 transitions. Word has length 112 [2022-11-02 21:05:04,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:05:04,850 INFO L495 AbstractCegarLoop]: Abstraction has 7899 states and 10595 transitions. [2022-11-02 21:05:04,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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 21:05:04,851 INFO L276 IsEmpty]: Start isEmpty. Operand 7899 states and 10595 transitions. [2022-11-02 21:05:04,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-11-02 21:05:04,857 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:05:04,857 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:05:04,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-02 21:05:04,857 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:05:04,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:05:04,858 INFO L85 PathProgramCache]: Analyzing trace with hash -1573511264, now seen corresponding path program 1 times [2022-11-02 21:05:04,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:05:04,858 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578927850] [2022-11-02 21:05:04,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:05:04,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:05:04,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:04,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 21:05:04,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:04,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-02 21:05:04,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:04,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-02 21:05:04,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:05,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-02 21:05:05,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:05,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-02 21:05:05,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:05,019 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 21:05:05,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:05:05,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578927850] [2022-11-02 21:05:05,020 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578927850] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:05:05,020 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:05:05,020 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:05:05,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504519578] [2022-11-02 21:05:05,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:05:05,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:05:05,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:05:05,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:05:05,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:05:05,023 INFO L87 Difference]: Start difference. First operand 7899 states and 10595 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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 21:05:09,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:05:09,129 INFO L93 Difference]: Finished difference Result 16530 states and 24283 transitions. [2022-11-02 21:05:09,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 21:05:09,130 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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 112 [2022-11-02 21:05:09,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:05:09,176 INFO L225 Difference]: With dead ends: 16530 [2022-11-02 21:05:09,176 INFO L226 Difference]: Without dead ends: 13214 [2022-11-02 21:05:09,192 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-02 21:05:09,193 INFO L413 NwaCegarLoop]: 684 mSDtfsCounter, 1034 mSDsluCounter, 1318 mSDsCounter, 0 mSdLazyCounter, 2032 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1057 SdHoareTripleChecker+Valid, 2002 SdHoareTripleChecker+Invalid, 2138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 2032 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-02 21:05:09,193 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1057 Valid, 2002 Invalid, 2138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 2032 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-02 21:05:09,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13214 states. [2022-11-02 21:05:10,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13214 to 11213. [2022-11-02 21:05:10,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11213 states, 9446 states have (on average 1.40747406309549) internal successors, (13295), 9546 states have internal predecessors, (13295), 1003 states have call successors, (1003), 615 states have call predecessors, (1003), 762 states have return successors, (1519), 1085 states have call predecessors, (1519), 1002 states have call successors, (1519) [2022-11-02 21:05:10,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11213 states to 11213 states and 15817 transitions. [2022-11-02 21:05:10,737 INFO L78 Accepts]: Start accepts. Automaton has 11213 states and 15817 transitions. Word has length 112 [2022-11-02 21:05:10,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:05:10,738 INFO L495 AbstractCegarLoop]: Abstraction has 11213 states and 15817 transitions. [2022-11-02 21:05:10,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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 21:05:10,738 INFO L276 IsEmpty]: Start isEmpty. Operand 11213 states and 15817 transitions. [2022-11-02 21:05:10,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-11-02 21:05:10,748 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:05:10,748 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:05:10,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-02 21:05:10,748 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:05:10,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:05:10,749 INFO L85 PathProgramCache]: Analyzing trace with hash 303551966, now seen corresponding path program 1 times [2022-11-02 21:05:10,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:05:10,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799458670] [2022-11-02 21:05:10,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:05:10,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:05:10,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:10,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 21:05:10,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:10,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-02 21:05:10,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:10,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-02 21:05:10,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:10,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-02 21:05:10,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:10,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-02 21:05:10,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:10,905 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 21:05:10,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:05:10,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799458670] [2022-11-02 21:05:10,906 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799458670] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:05:10,906 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:05:10,906 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:05:10,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835336732] [2022-11-02 21:05:10,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:05:10,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:05:10,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:05:10,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:05:10,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:05:10,908 INFO L87 Difference]: Start difference. First operand 11213 states and 15817 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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 21:05:15,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:05:15,847 INFO L93 Difference]: Finished difference Result 28388 states and 43239 transitions. [2022-11-02 21:05:15,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 21:05:15,847 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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 112 [2022-11-02 21:05:15,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:05:15,922 INFO L225 Difference]: With dead ends: 28388 [2022-11-02 21:05:15,923 INFO L226 Difference]: Without dead ends: 21758 [2022-11-02 21:05:16,036 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-02 21:05:16,036 INFO L413 NwaCegarLoop]: 681 mSDtfsCounter, 1034 mSDsluCounter, 1318 mSDsCounter, 0 mSdLazyCounter, 2026 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1057 SdHoareTripleChecker+Valid, 1999 SdHoareTripleChecker+Invalid, 2132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 2026 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:05:16,037 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1057 Valid, 1999 Invalid, 2132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 2026 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-11-02 21:05:16,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21758 states. [2022-11-02 21:05:18,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21758 to 17871. [2022-11-02 21:05:18,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17871 states, 15400 states have (on average 1.4568181818181818) internal successors, (22435), 15532 states have internal predecessors, (22435), 1483 states have call successors, (1483), 807 states have call predecessors, (1483), 986 states have return successors, (2549), 1597 states have call predecessors, (2549), 1482 states have call successors, (2549) [2022-11-02 21:05:18,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17871 states to 17871 states and 26467 transitions. [2022-11-02 21:05:18,431 INFO L78 Accepts]: Start accepts. Automaton has 17871 states and 26467 transitions. Word has length 112 [2022-11-02 21:05:18,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:05:18,431 INFO L495 AbstractCegarLoop]: Abstraction has 17871 states and 26467 transitions. [2022-11-02 21:05:18,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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 21:05:18,431 INFO L276 IsEmpty]: Start isEmpty. Operand 17871 states and 26467 transitions. [2022-11-02 21:05:18,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-11-02 21:05:18,446 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:05:18,446 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:05:18,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-02 21:05:18,447 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:05:18,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:05:18,448 INFO L85 PathProgramCache]: Analyzing trace with hash -467181600, now seen corresponding path program 1 times [2022-11-02 21:05:18,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:05:18,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134047659] [2022-11-02 21:05:18,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:05:18,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:05:18,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:18,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 21:05:18,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:18,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-02 21:05:18,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:18,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-02 21:05:18,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:18,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-02 21:05:18,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:18,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-02 21:05:18,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:18,612 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 21:05:18,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:05:18,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134047659] [2022-11-02 21:05:18,613 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134047659] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:05:18,613 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:05:18,613 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:05:18,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532958774] [2022-11-02 21:05:18,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:05:18,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:05:18,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:05:18,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:05:18,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:05:18,617 INFO L87 Difference]: Start difference. First operand 17871 states and 26467 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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 21:05:26,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:05:26,917 INFO L93 Difference]: Finished difference Result 58054 states and 90709 transitions. [2022-11-02 21:05:26,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-02 21:05:26,918 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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 112 [2022-11-02 21:05:26,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:05:27,099 INFO L225 Difference]: With dead ends: 58054 [2022-11-02 21:05:27,099 INFO L226 Difference]: Without dead ends: 44766 [2022-11-02 21:05:27,165 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-11-02 21:05:27,166 INFO L413 NwaCegarLoop]: 778 mSDtfsCounter, 1100 mSDsluCounter, 1310 mSDsCounter, 0 mSdLazyCounter, 2316 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1122 SdHoareTripleChecker+Valid, 2088 SdHoareTripleChecker+Invalid, 2427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 2316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:05:27,166 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1122 Valid, 2088 Invalid, 2427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 2316 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-02 21:05:27,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44766 states. [2022-11-02 21:05:31,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44766 to 31057. [2022-11-02 21:05:31,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31057 states, 27242 states have (on average 1.4932457235151604) internal successors, (40679), 27438 states have internal predecessors, (40679), 2379 states have call successors, (2379), 1191 states have call predecessors, (2379), 1434 states have return successors, (5031), 2557 states have call predecessors, (5031), 2378 states have call successors, (5031) [2022-11-02 21:05:31,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31057 states to 31057 states and 48089 transitions. [2022-11-02 21:05:31,126 INFO L78 Accepts]: Start accepts. Automaton has 31057 states and 48089 transitions. Word has length 112 [2022-11-02 21:05:31,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:05:31,126 INFO L495 AbstractCegarLoop]: Abstraction has 31057 states and 48089 transitions. [2022-11-02 21:05:31,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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 21:05:31,126 INFO L276 IsEmpty]: Start isEmpty. Operand 31057 states and 48089 transitions. [2022-11-02 21:05:31,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-11-02 21:05:31,148 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:05:31,148 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:05:31,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-02 21:05:31,149 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:05:31,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:05:31,149 INFO L85 PathProgramCache]: Analyzing trace with hash -1461875298, now seen corresponding path program 1 times [2022-11-02 21:05:31,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:05:31,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797342464] [2022-11-02 21:05:31,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:05:31,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:05:31,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:31,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 21:05:31,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:31,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-02 21:05:31,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:31,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-02 21:05:31,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:31,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-02 21:05:31,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:31,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-02 21:05:31,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:31,305 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 21:05:31,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:05:31,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797342464] [2022-11-02 21:05:31,306 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797342464] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:05:31,306 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:05:31,306 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:05:31,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264751106] [2022-11-02 21:05:31,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:05:31,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:05:31,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:05:31,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:05:31,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:05:31,308 INFO L87 Difference]: Start difference. First operand 31057 states and 48089 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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 21:05:46,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:05:46,807 INFO L93 Difference]: Finished difference Result 107531 states and 172649 transitions. [2022-11-02 21:05:46,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-02 21:05:46,811 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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 112 [2022-11-02 21:05:46,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:05:47,072 INFO L225 Difference]: With dead ends: 107531 [2022-11-02 21:05:47,072 INFO L226 Difference]: Without dead ends: 81057 [2022-11-02 21:05:47,150 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-11-02 21:05:47,151 INFO L413 NwaCegarLoop]: 742 mSDtfsCounter, 1092 mSDsluCounter, 1310 mSDsCounter, 0 mSdLazyCounter, 2207 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1114 SdHoareTripleChecker+Valid, 2052 SdHoareTripleChecker+Invalid, 2319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 2207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:05:47,152 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1114 Valid, 2052 Invalid, 2319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 2207 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-02 21:05:47,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81057 states. [2022-11-02 21:05:55,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81057 to 57491. [2022-11-02 21:05:55,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57491 states, 51052 states have (on average 1.5177270234270939) internal successors, (77483), 51376 states have internal predecessors, (77483), 4107 states have call successors, (4107), 1959 states have call predecessors, (4107), 2330 states have return successors, (11389), 4413 states have call predecessors, (11389), 4106 states have call successors, (11389)