./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/Problem05_label42+token_ring.07.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7602e8a2-64ec-4b19-a5a5-0896d51099a3/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7602e8a2-64ec-4b19-a5a5-0896d51099a3/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7602e8a2-64ec-4b19-a5a5-0896d51099a3/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7602e8a2-64ec-4b19-a5a5-0896d51099a3/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/Problem05_label42+token_ring.07.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7602e8a2-64ec-4b19-a5a5-0896d51099a3/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7602e8a2-64ec-4b19-a5a5-0896d51099a3/bin/uautomizer-tPACEb0tL8 --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 5738c99ca39a13f327ff059e5a6f3b47670e1701984219677e7b62ff58bbdc65 --- 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-e04fb08 [2022-11-16 12:07:33,608 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:07:33,610 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:07:33,650 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:07:33,651 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:07:33,655 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:07:33,657 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:07:33,661 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:07:33,664 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:07:33,667 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:07:33,669 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:07:33,671 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:07:33,672 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:07:33,676 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:07:33,678 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:07:33,680 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:07:33,682 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:07:33,683 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:07:33,684 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:07:33,691 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:07:33,693 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:07:33,694 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:07:33,697 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:07:33,698 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:07:33,707 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:07:33,707 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:07:33,708 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:07:33,710 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:07:33,710 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:07:33,711 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:07:33,712 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:07:33,713 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:07:33,715 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:07:33,716 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:07:33,719 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:07:33,719 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:07:33,720 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:07:33,720 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:07:33,720 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:07:33,721 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:07:33,722 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:07:33,723 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7602e8a2-64ec-4b19-a5a5-0896d51099a3/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-16 12:07:33,764 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:07:33,764 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:07:33,765 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:07:33,765 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:07:33,766 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:07:33,767 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:07:33,767 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:07:33,768 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:07:33,768 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:07:33,768 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:07:33,769 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 12:07:33,769 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:07:33,770 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 12:07:33,770 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:07:33,770 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 12:07:33,770 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:07:33,771 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 12:07:33,771 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 12:07:33,771 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 12:07:33,771 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:07:33,771 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 12:07:33,772 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:07:33,772 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:07:33,772 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:07:33,772 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:07:33,773 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:07:33,774 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:07:33,774 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 12:07:33,775 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 12:07:33,775 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 12:07:33,775 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 12:07:33,775 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 12:07:33,776 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 12:07:33,776 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_7602e8a2-64ec-4b19-a5a5-0896d51099a3/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7602e8a2-64ec-4b19-a5a5-0896d51099a3/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5738c99ca39a13f327ff059e5a6f3b47670e1701984219677e7b62ff58bbdc65 [2022-11-16 12:07:34,073 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:07:34,097 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:07:34,101 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:07:34,102 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:07:34,103 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:07:34,104 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7602e8a2-64ec-4b19-a5a5-0896d51099a3/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/combinations/Problem05_label42+token_ring.07.cil-2.c [2022-11-16 12:07:34,180 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7602e8a2-64ec-4b19-a5a5-0896d51099a3/bin/uautomizer-tPACEb0tL8/data/13f01021f/ed4ee54d7c6242c693bad333de72a67a/FLAG841d63e5b [2022-11-16 12:07:35,214 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:07:35,214 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7602e8a2-64ec-4b19-a5a5-0896d51099a3/sv-benchmarks/c/combinations/Problem05_label42+token_ring.07.cil-2.c [2022-11-16 12:07:35,261 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7602e8a2-64ec-4b19-a5a5-0896d51099a3/bin/uautomizer-tPACEb0tL8/data/13f01021f/ed4ee54d7c6242c693bad333de72a67a/FLAG841d63e5b [2022-11-16 12:07:35,545 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7602e8a2-64ec-4b19-a5a5-0896d51099a3/bin/uautomizer-tPACEb0tL8/data/13f01021f/ed4ee54d7c6242c693bad333de72a67a [2022-11-16 12:07:35,547 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:07:35,551 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:07:35,554 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:07:35,554 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:07:35,558 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:07:35,558 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:07:35" (1/1) ... [2022-11-16 12:07:35,560 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ec8dfde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:07:35, skipping insertion in model container [2022-11-16 12:07:35,560 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:07:35" (1/1) ... [2022-11-16 12:07:35,567 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:07:35,801 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:07:38,228 WARN L229 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_7602e8a2-64ec-4b19-a5a5-0896d51099a3/sv-benchmarks/c/combinations/Problem05_label42+token_ring.07.cil-2.c[378560,378573] [2022-11-16 12:07:38,260 WARN L229 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_7602e8a2-64ec-4b19-a5a5-0896d51099a3/sv-benchmarks/c/combinations/Problem05_label42+token_ring.07.cil-2.c[383339,383352] [2022-11-16 12:07:38,500 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:07:38,511 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:07:39,662 WARN L229 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_7602e8a2-64ec-4b19-a5a5-0896d51099a3/sv-benchmarks/c/combinations/Problem05_label42+token_ring.07.cil-2.c[378560,378573] [2022-11-16 12:07:39,670 WARN L229 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_7602e8a2-64ec-4b19-a5a5-0896d51099a3/sv-benchmarks/c/combinations/Problem05_label42+token_ring.07.cil-2.c[383339,383352] [2022-11-16 12:07:39,685 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:07:39,776 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:07:39,776 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:07:39 WrapperNode [2022-11-16 12:07:39,776 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:07:39,779 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:07:39,779 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:07:39,779 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:07:39,788 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:07:39" (1/1) ... [2022-11-16 12:07:39,897 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:07:39" (1/1) ... [2022-11-16 12:07:40,247 INFO L138 Inliner]: procedures = 58, calls = 63, calls flagged for inlining = 35, calls inlined = 35, statements flattened = 12914 [2022-11-16 12:07:40,248 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:07:40,248 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:07:40,249 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:07:40,249 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:07:40,258 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:07:39" (1/1) ... [2022-11-16 12:07:40,258 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:07:39" (1/1) ... [2022-11-16 12:07:40,433 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:07:39" (1/1) ... [2022-11-16 12:07:40,434 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:07:39" (1/1) ... [2022-11-16 12:07:40,751 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:07:39" (1/1) ... [2022-11-16 12:07:40,848 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:07:39" (1/1) ... [2022-11-16 12:07:40,958 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:07:39" (1/1) ... [2022-11-16 12:07:41,012 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:07:39" (1/1) ... [2022-11-16 12:07:41,071 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:07:41,072 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:07:41,072 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:07:41,073 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:07:41,075 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:07:39" (1/1) ... [2022-11-16 12:07:41,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:07:41,097 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7602e8a2-64ec-4b19-a5a5-0896d51099a3/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:07:41,116 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7602e8a2-64ec-4b19-a5a5-0896d51099a3/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:07:41,143 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7602e8a2-64ec-4b19-a5a5-0896d51099a3/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:07:41,175 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 12:07:41,175 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-11-16 12:07:41,175 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-11-16 12:07:41,175 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-11-16 12:07:41,175 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-11-16 12:07:41,176 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-11-16 12:07:41,176 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-11-16 12:07:41,176 INFO L130 BoogieDeclarations]: Found specification of procedure error [2022-11-16 12:07:41,176 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2022-11-16 12:07:41,176 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-11-16 12:07:41,176 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-11-16 12:07:41,177 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-11-16 12:07:41,177 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-11-16 12:07:41,177 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-11-16 12:07:41,177 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-11-16 12:07:41,177 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 12:07:41,177 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:07:41,178 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:07:41,332 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:07:41,334 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:07:50,837 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:07:50,876 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:07:50,876 INFO L300 CfgBuilder]: Removed 11 assume(true) statements. [2022-11-16 12:07:50,883 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:07:50 BoogieIcfgContainer [2022-11-16 12:07:50,883 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:07:50,886 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:07:50,886 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:07:50,890 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:07:50,890 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:07:35" (1/3) ... [2022-11-16 12:07:50,891 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@688735d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:07:50, skipping insertion in model container [2022-11-16 12:07:50,891 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:07:39" (2/3) ... [2022-11-16 12:07:50,892 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@688735d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:07:50, skipping insertion in model container [2022-11-16 12:07:50,892 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:07:50" (3/3) ... [2022-11-16 12:07:50,893 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label42+token_ring.07.cil-2.c [2022-11-16 12:07:50,912 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:07:50,913 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-16 12:07:51,035 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:07:51,044 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;@74300d53, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:07:51,045 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-16 12:07:51,059 INFO L276 IsEmpty]: Start isEmpty. Operand has 2448 states, 2415 states have (on average 1.850103519668737) internal successors, (4468), 2420 states have internal predecessors, (4468), 23 states have call successors, (23), 7 states have call predecessors, (23), 7 states have return successors, (23), 22 states have call predecessors, (23), 23 states have call successors, (23) [2022-11-16 12:07:51,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-11-16 12:07:51,092 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:07:51,094 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:07:51,094 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:07:51,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:07:51,102 INFO L85 PathProgramCache]: Analyzing trace with hash -818812197, now seen corresponding path program 1 times [2022-11-16 12:07:51,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:07:51,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790380774] [2022-11-16 12:07:51,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:07:51,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:07:51,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:51,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-16 12:07:51,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:51,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-16 12:07:51,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:51,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-16 12:07:51,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:51,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-16 12:07:51,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:51,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-16 12:07:51,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:51,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:07:51,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:07:51,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790380774] [2022-11-16 12:07:51,769 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790380774] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:07:51,769 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:07:51,770 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:07:51,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920971929] [2022-11-16 12:07:51,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:07:51,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:07:51,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:07:51,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:07:51,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:07:51,827 INFO L87 Difference]: Start difference. First operand has 2448 states, 2415 states have (on average 1.850103519668737) internal successors, (4468), 2420 states have internal predecessors, (4468), 23 states have call successors, (23), 7 states have call predecessors, (23), 7 states have return successors, (23), 22 states have call predecessors, (23), 23 states have call successors, (23) Second operand has 5 states, 5 states have (on average 22.6) internal successors, (113), 3 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 12:07:53,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:07:53,537 INFO L93 Difference]: Finished difference Result 4970 states and 9155 transitions. [2022-11-16 12:07:53,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:07:53,540 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 3 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 124 [2022-11-16 12:07:53,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:07:53,564 INFO L225 Difference]: With dead ends: 4970 [2022-11-16 12:07:53,564 INFO L226 Difference]: Without dead ends: 2467 [2022-11-16 12:07:53,572 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:07:53,575 INFO L413 NwaCegarLoop]: 4271 mSDtfsCounter, 671 mSDsluCounter, 12353 mSDsCounter, 0 mSdLazyCounter, 652 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 690 SdHoareTripleChecker+Valid, 16624 SdHoareTripleChecker+Invalid, 702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 652 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:07:53,576 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [690 Valid, 16624 Invalid, 702 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [50 Valid, 652 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-16 12:07:53,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2467 states. [2022-11-16 12:07:53,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2467 to 2380. [2022-11-16 12:07:53,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2380 states, 2349 states have (on average 1.8369518944231589) internal successors, (4315), 2352 states have internal predecessors, (4315), 23 states have call successors, (23), 7 states have call predecessors, (23), 6 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2022-11-16 12:07:53,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2380 states to 2380 states and 4359 transitions. [2022-11-16 12:07:53,858 INFO L78 Accepts]: Start accepts. Automaton has 2380 states and 4359 transitions. Word has length 124 [2022-11-16 12:07:53,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:07:53,859 INFO L495 AbstractCegarLoop]: Abstraction has 2380 states and 4359 transitions. [2022-11-16 12:07:53,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 3 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 12:07:53,861 INFO L276 IsEmpty]: Start isEmpty. Operand 2380 states and 4359 transitions. [2022-11-16 12:07:53,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-11-16 12:07:53,868 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:07:53,869 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:07:53,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 12:07:53,869 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:07:53,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:07:53,870 INFO L85 PathProgramCache]: Analyzing trace with hash 219772377, now seen corresponding path program 1 times [2022-11-16 12:07:53,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:07:53,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608851264] [2022-11-16 12:07:53,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:07:53,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:07:53,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:54,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-16 12:07:54,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:54,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-16 12:07:54,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:54,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-16 12:07:54,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:54,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-16 12:07:54,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:54,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-16 12:07:54,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:54,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:07:54,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:07:54,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608851264] [2022-11-16 12:07:54,275 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608851264] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:07:54,276 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:07:54,277 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 12:07:54,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74237331] [2022-11-16 12:07:54,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:07:54,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:07:54,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:07:54,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:07:54,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:07:54,292 INFO L87 Difference]: Start difference. First operand 2380 states and 4359 transitions. Second operand has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 12:07:56,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:07:56,915 INFO L93 Difference]: Finished difference Result 3050 states and 5430 transitions. [2022-11-16 12:07:56,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 12:07:56,916 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 124 [2022-11-16 12:07:56,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:07:56,930 INFO L225 Difference]: With dead ends: 3050 [2022-11-16 12:07:56,930 INFO L226 Difference]: Without dead ends: 2806 [2022-11-16 12:07:56,933 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-11-16 12:07:56,934 INFO L413 NwaCegarLoop]: 4207 mSDtfsCounter, 4959 mSDsluCounter, 12541 mSDsCounter, 0 mSdLazyCounter, 1510 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4973 SdHoareTripleChecker+Valid, 16748 SdHoareTripleChecker+Invalid, 1606 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 1510 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:07:56,934 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4973 Valid, 16748 Invalid, 1606 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [96 Valid, 1510 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-16 12:07:56,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2806 states. [2022-11-16 12:07:57,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2806 to 2631. [2022-11-16 12:07:57,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2631 states, 2577 states have (on average 1.8145129996119518) internal successors, (4676), 2581 states have internal predecessors, (4676), 39 states have call successors, (39), 13 states have call predecessors, (39), 13 states have return successors, (40), 37 states have call predecessors, (40), 37 states have call successors, (40) [2022-11-16 12:07:57,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2631 states to 2631 states and 4755 transitions. [2022-11-16 12:07:57,091 INFO L78 Accepts]: Start accepts. Automaton has 2631 states and 4755 transitions. Word has length 124 [2022-11-16 12:07:57,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:07:57,092 INFO L495 AbstractCegarLoop]: Abstraction has 2631 states and 4755 transitions. [2022-11-16 12:07:57,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 12:07:57,092 INFO L276 IsEmpty]: Start isEmpty. Operand 2631 states and 4755 transitions. [2022-11-16 12:07:57,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-11-16 12:07:57,095 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:07:57,095 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:07:57,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 12:07:57,096 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:07:57,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:07:57,096 INFO L85 PathProgramCache]: Analyzing trace with hash -797876011, now seen corresponding path program 1 times [2022-11-16 12:07:57,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:07:57,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104114005] [2022-11-16 12:07:57,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:07:57,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:07:57,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:57,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-16 12:07:57,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:57,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-16 12:07:57,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:57,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-16 12:07:57,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:57,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-16 12:07:57,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:57,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-16 12:07:57,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:57,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:07:57,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:07:57,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104114005] [2022-11-16 12:07:57,476 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104114005] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:07:57,476 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:07:57,476 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:07:57,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638725726] [2022-11-16 12:07:57,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:07:57,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:07:57,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:07:57,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:07:57,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:07:57,478 INFO L87 Difference]: Start difference. First operand 2631 states and 4755 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 12:08:00,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:08:00,550 INFO L93 Difference]: Finished difference Result 3648 states and 6379 transitions. [2022-11-16 12:08:00,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-16 12:08:00,555 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 124 [2022-11-16 12:08:00,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:08:00,575 INFO L225 Difference]: With dead ends: 3648 [2022-11-16 12:08:00,575 INFO L226 Difference]: Without dead ends: 3153 [2022-11-16 12:08:00,583 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-16 12:08:00,590 INFO L413 NwaCegarLoop]: 4351 mSDtfsCounter, 4970 mSDsluCounter, 17147 mSDsCounter, 0 mSdLazyCounter, 2290 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4984 SdHoareTripleChecker+Valid, 21498 SdHoareTripleChecker+Invalid, 2347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 2290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-16 12:08:00,592 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4984 Valid, 21498 Invalid, 2347 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [57 Valid, 2290 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-11-16 12:08:00,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3153 states. [2022-11-16 12:08:00,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3153 to 2865. [2022-11-16 12:08:00,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2865 states, 2788 states have (on average 1.7944763271162123) internal successors, (5003), 2793 states have internal predecessors, (5003), 55 states have call successors, (55), 19 states have call predecessors, (55), 20 states have return successors, (58), 54 states have call predecessors, (58), 53 states have call successors, (58) [2022-11-16 12:08:00,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2865 states to 2865 states and 5116 transitions. [2022-11-16 12:08:00,751 INFO L78 Accepts]: Start accepts. Automaton has 2865 states and 5116 transitions. Word has length 124 [2022-11-16 12:08:00,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:08:00,753 INFO L495 AbstractCegarLoop]: Abstraction has 2865 states and 5116 transitions. [2022-11-16 12:08:00,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 12:08:00,753 INFO L276 IsEmpty]: Start isEmpty. Operand 2865 states and 5116 transitions. [2022-11-16 12:08:00,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-11-16 12:08:00,756 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:08:00,756 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:08:00,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 12:08:00,757 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:08:00,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:08:00,758 INFO L85 PathProgramCache]: Analyzing trace with hash -679434537, now seen corresponding path program 1 times [2022-11-16 12:08:00,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:08:00,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607783359] [2022-11-16 12:08:00,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:08:00,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:08:00,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:00,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-16 12:08:00,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:00,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-16 12:08:00,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:00,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-16 12:08:00,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:00,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-16 12:08:00,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:00,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-16 12:08:00,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:00,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:08:00,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:08:00,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607783359] [2022-11-16 12:08:00,976 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607783359] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:08:00,976 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:08:00,976 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:08:00,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625263816] [2022-11-16 12:08:00,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:08:00,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:08:00,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:08:00,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:08:00,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:08:00,978 INFO L87 Difference]: Start difference. First operand 2865 states and 5116 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 12:08:04,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:08:04,005 INFO L93 Difference]: Finished difference Result 4529 states and 7768 transitions. [2022-11-16 12:08:04,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-16 12:08:04,006 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 124 [2022-11-16 12:08:04,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:08:04,023 INFO L225 Difference]: With dead ends: 4529 [2022-11-16 12:08:04,023 INFO L226 Difference]: Without dead ends: 3800 [2022-11-16 12:08:04,027 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-16 12:08:04,028 INFO L413 NwaCegarLoop]: 4349 mSDtfsCounter, 4968 mSDsluCounter, 17147 mSDsCounter, 0 mSdLazyCounter, 2286 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4982 SdHoareTripleChecker+Valid, 21496 SdHoareTripleChecker+Invalid, 2345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 2286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:08:04,028 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4982 Valid, 21496 Invalid, 2345 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [59 Valid, 2286 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-16 12:08:04,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3800 states. [2022-11-16 12:08:04,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3800 to 3334. [2022-11-16 12:08:04,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3334 states, 3211 states have (on average 1.7620678916225474) internal successors, (5658), 3218 states have internal predecessors, (5658), 87 states have call successors, (87), 31 states have call predecessors, (87), 34 states have return successors, (98), 88 states have call predecessors, (98), 85 states have call successors, (98) [2022-11-16 12:08:04,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3334 states to 3334 states and 5843 transitions. [2022-11-16 12:08:04,205 INFO L78 Accepts]: Start accepts. Automaton has 3334 states and 5843 transitions. Word has length 124 [2022-11-16 12:08:04,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:08:04,206 INFO L495 AbstractCegarLoop]: Abstraction has 3334 states and 5843 transitions. [2022-11-16 12:08:04,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 12:08:04,206 INFO L276 IsEmpty]: Start isEmpty. Operand 3334 states and 5843 transitions. [2022-11-16 12:08:04,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-11-16 12:08:04,208 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:08:04,208 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:08:04,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 12:08:04,209 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:08:04,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:08:04,210 INFO L85 PathProgramCache]: Analyzing trace with hash 709859477, now seen corresponding path program 1 times [2022-11-16 12:08:04,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:08:04,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444820210] [2022-11-16 12:08:04,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:08:04,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:08:04,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:04,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-16 12:08:04,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:04,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-16 12:08:04,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:04,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-16 12:08:04,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:04,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-16 12:08:04,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:04,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-16 12:08:04,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:04,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:08:04,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:08:04,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444820210] [2022-11-16 12:08:04,446 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444820210] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:08:04,446 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:08:04,447 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:08:04,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479969087] [2022-11-16 12:08:04,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:08:04,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:08:04,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:08:04,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:08:04,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:08:04,448 INFO L87 Difference]: Start difference. First operand 3334 states and 5843 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 12:08:07,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:08:07,547 INFO L93 Difference]: Finished difference Result 6226 states and 10431 transitions. [2022-11-16 12:08:07,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-16 12:08:07,548 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 124 [2022-11-16 12:08:07,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:08:07,574 INFO L225 Difference]: With dead ends: 6226 [2022-11-16 12:08:07,575 INFO L226 Difference]: Without dead ends: 5028 [2022-11-16 12:08:07,579 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-16 12:08:07,580 INFO L413 NwaCegarLoop]: 4349 mSDtfsCounter, 4964 mSDsluCounter, 17147 mSDsCounter, 0 mSdLazyCounter, 2277 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4978 SdHoareTripleChecker+Valid, 21496 SdHoareTripleChecker+Invalid, 2336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 2277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:08:07,581 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4978 Valid, 21496 Invalid, 2336 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [59 Valid, 2277 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-16 12:08:07,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5028 states. [2022-11-16 12:08:07,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5028 to 4273. [2022-11-16 12:08:07,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4273 states, 4058 states have (on average 1.7171020206998522) internal successors, (6968), 4069 states have internal predecessors, (6968), 151 states have call successors, (151), 55 states have call predecessors, (151), 62 states have return successors, (184), 156 states have call predecessors, (184), 149 states have call successors, (184) [2022-11-16 12:08:07,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4273 states to 4273 states and 7303 transitions. [2022-11-16 12:08:07,870 INFO L78 Accepts]: Start accepts. Automaton has 4273 states and 7303 transitions. Word has length 124 [2022-11-16 12:08:07,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:08:07,870 INFO L495 AbstractCegarLoop]: Abstraction has 4273 states and 7303 transitions. [2022-11-16 12:08:07,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 12:08:07,881 INFO L276 IsEmpty]: Start isEmpty. Operand 4273 states and 7303 transitions. [2022-11-16 12:08:07,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-11-16 12:08:07,890 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:08:07,891 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:08:07,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 12:08:07,891 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:08:07,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:08:07,892 INFO L85 PathProgramCache]: Analyzing trace with hash -1323534569, now seen corresponding path program 1 times [2022-11-16 12:08:07,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:08:07,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458846382] [2022-11-16 12:08:07,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:08:07,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:08:07,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:08,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-16 12:08:08,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:08,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-16 12:08:08,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:08,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-16 12:08:08,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:08,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-16 12:08:08,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:08,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-16 12:08:08,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:08,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:08:08,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:08:08,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458846382] [2022-11-16 12:08:08,138 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458846382] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:08:08,139 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:08:08,139 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:08:08,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742866951] [2022-11-16 12:08:08,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:08:08,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:08:08,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:08:08,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:08:08,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:08:08,141 INFO L87 Difference]: Start difference. First operand 4273 states and 7303 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 12:08:11,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:08:11,687 INFO L93 Difference]: Finished difference Result 9619 states and 15773 transitions. [2022-11-16 12:08:11,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-16 12:08:11,687 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 124 [2022-11-16 12:08:11,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:08:11,727 INFO L225 Difference]: With dead ends: 9619 [2022-11-16 12:08:11,727 INFO L226 Difference]: Without dead ends: 7482 [2022-11-16 12:08:11,737 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-16 12:08:11,738 INFO L413 NwaCegarLoop]: 4349 mSDtfsCounter, 4960 mSDsluCounter, 17147 mSDsCounter, 0 mSdLazyCounter, 2268 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4974 SdHoareTripleChecker+Valid, 21496 SdHoareTripleChecker+Invalid, 2327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 2268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-16 12:08:11,739 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4974 Valid, 21496 Invalid, 2327 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [59 Valid, 2268 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-11-16 12:08:11,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7482 states. [2022-11-16 12:08:12,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7482 to 6156. [2022-11-16 12:08:12,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6156 states, 5757 states have (on average 1.6664929650859823) internal successors, (9594), 5776 states have internal predecessors, (9594), 279 states have call successors, (279), 103 states have call predecessors, (279), 118 states have return successors, (374), 292 states have call predecessors, (374), 277 states have call successors, (374) [2022-11-16 12:08:12,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6156 states to 6156 states and 10247 transitions. [2022-11-16 12:08:12,260 INFO L78 Accepts]: Start accepts. Automaton has 6156 states and 10247 transitions. Word has length 124 [2022-11-16 12:08:12,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:08:12,261 INFO L495 AbstractCegarLoop]: Abstraction has 6156 states and 10247 transitions. [2022-11-16 12:08:12,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 12:08:12,262 INFO L276 IsEmpty]: Start isEmpty. Operand 6156 states and 10247 transitions. [2022-11-16 12:08:12,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-11-16 12:08:12,265 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:08:12,266 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:08:12,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 12:08:12,266 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:08:12,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:08:12,267 INFO L85 PathProgramCache]: Analyzing trace with hash 1104724053, now seen corresponding path program 1 times [2022-11-16 12:08:12,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:08:12,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225885684] [2022-11-16 12:08:12,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:08:12,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:08:12,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:12,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-16 12:08:12,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:12,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-16 12:08:12,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:12,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-16 12:08:12,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:12,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-16 12:08:12,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:12,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-16 12:08:12,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:12,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:08:12,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:08:12,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225885684] [2022-11-16 12:08:12,584 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225885684] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:08:12,584 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:08:12,584 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:08:12,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394310548] [2022-11-16 12:08:12,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:08:12,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:08:12,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:08:12,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:08:12,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:08:12,586 INFO L87 Difference]: Start difference. First operand 6156 states and 10247 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 12:08:16,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:08:16,242 INFO L93 Difference]: Finished difference Result 16404 states and 26515 transitions. [2022-11-16 12:08:16,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-16 12:08:16,247 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 124 [2022-11-16 12:08:16,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:08:16,306 INFO L225 Difference]: With dead ends: 16404 [2022-11-16 12:08:16,306 INFO L226 Difference]: Without dead ends: 12384 [2022-11-16 12:08:16,322 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-16 12:08:16,323 INFO L413 NwaCegarLoop]: 4349 mSDtfsCounter, 4962 mSDsluCounter, 17147 mSDsCounter, 0 mSdLazyCounter, 2254 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4976 SdHoareTripleChecker+Valid, 21496 SdHoareTripleChecker+Invalid, 2313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 2254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:08:16,324 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4976 Valid, 21496 Invalid, 2313 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [59 Valid, 2254 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-16 12:08:16,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12384 states. [2022-11-16 12:08:17,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12384 to 9935. [2022-11-16 12:08:17,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9935 states, 9168 states have (on average 1.6212914485165795) internal successors, (14864), 9203 states have internal predecessors, (14864), 535 states have call successors, (535), 199 states have call predecessors, (535), 230 states have return successors, (808), 564 states have call predecessors, (808), 533 states have call successors, (808) [2022-11-16 12:08:17,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9935 states to 9935 states and 16207 transitions. [2022-11-16 12:08:17,328 INFO L78 Accepts]: Start accepts. Automaton has 9935 states and 16207 transitions. Word has length 124 [2022-11-16 12:08:17,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:08:17,328 INFO L495 AbstractCegarLoop]: Abstraction has 9935 states and 16207 transitions. [2022-11-16 12:08:17,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 12:08:17,329 INFO L276 IsEmpty]: Start isEmpty. Operand 9935 states and 16207 transitions. [2022-11-16 12:08:17,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-11-16 12:08:17,336 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:08:17,336 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:08:17,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 12:08:17,340 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:08:17,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:08:17,341 INFO L85 PathProgramCache]: Analyzing trace with hash -202418345, now seen corresponding path program 1 times [2022-11-16 12:08:17,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:08:17,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070206660] [2022-11-16 12:08:17,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:08:17,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:08:17,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:17,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-16 12:08:17,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:17,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-16 12:08:17,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:17,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-16 12:08:17,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:17,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-16 12:08:17,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:17,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-16 12:08:17,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:17,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:08:17,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:08:17,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070206660] [2022-11-16 12:08:17,537 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070206660] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:08:17,537 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:08:17,537 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:08:17,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177633840] [2022-11-16 12:08:17,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:08:17,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:08:17,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:08:17,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:08:17,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:08:17,539 INFO L87 Difference]: Start difference. First operand 9935 states and 16207 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 12:08:19,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:08:19,832 INFO L93 Difference]: Finished difference Result 20276 states and 32868 transitions. [2022-11-16 12:08:19,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:08:19,833 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 124 [2022-11-16 12:08:19,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:08:19,887 INFO L225 Difference]: With dead ends: 20276 [2022-11-16 12:08:19,887 INFO L226 Difference]: Without dead ends: 12477 [2022-11-16 12:08:19,915 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-11-16 12:08:19,916 INFO L413 NwaCegarLoop]: 4167 mSDtfsCounter, 4810 mSDsluCounter, 12383 mSDsCounter, 0 mSdLazyCounter, 1020 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4825 SdHoareTripleChecker+Valid, 16550 SdHoareTripleChecker+Invalid, 1103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 1020 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:08:19,916 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4825 Valid, 16550 Invalid, 1103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 1020 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-16 12:08:19,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12477 states. [2022-11-16 12:08:20,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12477 to 9935. [2022-11-16 12:08:20,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9935 states, 9168 states have (on average 1.6176919720767888) internal successors, (14831), 9203 states have internal predecessors, (14831), 535 states have call successors, (535), 199 states have call predecessors, (535), 230 states have return successors, (808), 564 states have call predecessors, (808), 533 states have call successors, (808) [2022-11-16 12:08:20,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9935 states to 9935 states and 16174 transitions. [2022-11-16 12:08:20,904 INFO L78 Accepts]: Start accepts. Automaton has 9935 states and 16174 transitions. Word has length 124 [2022-11-16 12:08:20,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:08:20,904 INFO L495 AbstractCegarLoop]: Abstraction has 9935 states and 16174 transitions. [2022-11-16 12:08:20,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 12:08:20,905 INFO L276 IsEmpty]: Start isEmpty. Operand 9935 states and 16174 transitions. [2022-11-16 12:08:20,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-11-16 12:08:20,914 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:08:20,915 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:08:20,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 12:08:20,915 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:08:20,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:08:20,916 INFO L85 PathProgramCache]: Analyzing trace with hash 828622553, now seen corresponding path program 1 times [2022-11-16 12:08:20,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:08:20,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658912562] [2022-11-16 12:08:20,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:08:20,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:08:20,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:21,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-16 12:08:21,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:21,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-16 12:08:21,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:21,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-16 12:08:21,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:21,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-16 12:08:21,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:21,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-16 12:08:21,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:21,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:08:21,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:08:21,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658912562] [2022-11-16 12:08:21,162 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658912562] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:08:21,162 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:08:21,162 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:08:21,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714399946] [2022-11-16 12:08:21,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:08:21,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:08:21,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:08:21,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:08:21,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:08:21,165 INFO L87 Difference]: Start difference. First operand 9935 states and 16174 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 12:08:26,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:08:26,705 INFO L93 Difference]: Finished difference Result 33332 states and 53083 transitions. [2022-11-16 12:08:26,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-16 12:08:26,706 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 124 [2022-11-16 12:08:26,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:08:26,800 INFO L225 Difference]: With dead ends: 33332 [2022-11-16 12:08:26,801 INFO L226 Difference]: Without dead ends: 25533 [2022-11-16 12:08:26,831 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-11-16 12:08:26,834 INFO L413 NwaCegarLoop]: 4347 mSDtfsCounter, 5242 mSDsluCounter, 17139 mSDsCounter, 0 mSdLazyCounter, 2194 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5264 SdHoareTripleChecker+Valid, 21486 SdHoareTripleChecker+Invalid, 2258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 2194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-16 12:08:26,834 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5264 Valid, 21486 Invalid, 2258 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [64 Valid, 2194 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-11-16 12:08:26,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25533 states. [2022-11-16 12:08:28,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25533 to 17492. [2022-11-16 12:08:28,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17492 states, 16021 states have (on average 1.586480244678859) internal successors, (25417), 16088 states have internal predecessors, (25417), 1015 states have call successors, (1015), 391 states have call predecessors, (1015), 454 states have return successors, (1806), 1076 states have call predecessors, (1806), 1013 states have call successors, (1806) [2022-11-16 12:08:28,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17492 states to 17492 states and 28238 transitions. [2022-11-16 12:08:28,846 INFO L78 Accepts]: Start accepts. Automaton has 17492 states and 28238 transitions. Word has length 124 [2022-11-16 12:08:28,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:08:28,846 INFO L495 AbstractCegarLoop]: Abstraction has 17492 states and 28238 transitions. [2022-11-16 12:08:28,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 12:08:28,847 INFO L276 IsEmpty]: Start isEmpty. Operand 17492 states and 28238 transitions. [2022-11-16 12:08:28,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-11-16 12:08:28,859 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:08:28,859 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:08:28,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 12:08:28,860 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:08:28,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:08:28,860 INFO L85 PathProgramCache]: Analyzing trace with hash -1077780713, now seen corresponding path program 1 times [2022-11-16 12:08:28,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:08:28,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95387950] [2022-11-16 12:08:28,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:08:28,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:08:28,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:28,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-16 12:08:28,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:28,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-16 12:08:28,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:29,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-16 12:08:29,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:29,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-16 12:08:29,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:29,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-16 12:08:29,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:29,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:08:29,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:08:29,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95387950] [2022-11-16 12:08:29,055 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95387950] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:08:29,055 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:08:29,055 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:08:29,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222638288] [2022-11-16 12:08:29,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:08:29,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:08:29,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:08:29,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:08:29,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:08:29,057 INFO L87 Difference]: Start difference. First operand 17492 states and 28238 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 12:08:38,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:08:38,733 INFO L93 Difference]: Finished difference Result 62843 states and 100433 transitions. [2022-11-16 12:08:38,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-16 12:08:38,734 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 124 [2022-11-16 12:08:38,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:08:38,919 INFO L225 Difference]: With dead ends: 62843 [2022-11-16 12:08:38,920 INFO L226 Difference]: Without dead ends: 47487 [2022-11-16 12:08:38,973 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-11-16 12:08:38,974 INFO L413 NwaCegarLoop]: 4346 mSDtfsCounter, 5012 mSDsluCounter, 17136 mSDsCounter, 0 mSdLazyCounter, 2612 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5025 SdHoareTripleChecker+Valid, 21482 SdHoareTripleChecker+Invalid, 2673 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 2612 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-16 12:08:38,975 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5025 Valid, 21482 Invalid, 2673 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [61 Valid, 2612 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-11-16 12:08:39,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47487 states. [2022-11-16 12:08:42,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47487 to 31929. [2022-11-16 12:08:42,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31929 states, 29082 states have (on average 1.5631318341242004) internal successors, (45459), 29213 states have internal predecessors, (45459), 1943 states have call successors, (1943), 775 states have call predecessors, (1943), 902 states have return successors, (4256), 2068 states have call predecessors, (4256), 1941 states have call successors, (4256) [2022-11-16 12:08:43,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31929 states to 31929 states and 51658 transitions. [2022-11-16 12:08:43,057 INFO L78 Accepts]: Start accepts. Automaton has 31929 states and 51658 transitions. Word has length 124 [2022-11-16 12:08:43,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:08:43,057 INFO L495 AbstractCegarLoop]: Abstraction has 31929 states and 51658 transitions. [2022-11-16 12:08:43,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 12:08:43,058 INFO L276 IsEmpty]: Start isEmpty. Operand 31929 states and 51658 transitions. [2022-11-16 12:08:43,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-11-16 12:08:43,078 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:08:43,078 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:08:43,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-16 12:08:43,079 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:08:43,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:08:43,079 INFO L85 PathProgramCache]: Analyzing trace with hash 523290393, now seen corresponding path program 1 times [2022-11-16 12:08:43,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:08:43,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484463736] [2022-11-16 12:08:43,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:08:43,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:08:43,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:43,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-16 12:08:43,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:43,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-16 12:08:43,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:43,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-16 12:08:43,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:43,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-16 12:08:43,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:43,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-16 12:08:43,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:43,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:08:43,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:08:43,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484463736] [2022-11-16 12:08:43,299 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484463736] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:08:43,300 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:08:43,300 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:08:43,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950697190] [2022-11-16 12:08:43,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:08:43,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:08:43,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:08:43,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:08:43,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:08:43,302 INFO L87 Difference]: Start difference. First operand 31929 states and 51658 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 12:09:01,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:09:01,843 INFO L93 Difference]: Finished difference Result 118758 states and 191663 transitions. [2022-11-16 12:09:01,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-16 12:09:01,844 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 124 [2022-11-16 12:09:01,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:09:02,460 INFO L225 Difference]: With dead ends: 118758 [2022-11-16 12:09:02,461 INFO L226 Difference]: Without dead ends: 88965 [2022-11-16 12:09:02,569 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-11-16 12:09:02,569 INFO L413 NwaCegarLoop]: 4347 mSDtfsCounter, 5162 mSDsluCounter, 17139 mSDsCounter, 0 mSdLazyCounter, 2168 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5184 SdHoareTripleChecker+Valid, 21486 SdHoareTripleChecker+Invalid, 2232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 2168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:09:02,570 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5184 Valid, 21486 Invalid, 2232 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [64 Valid, 2168 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-16 12:09:02,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88965 states. [2022-11-16 12:09:10,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88965 to 61378. [2022-11-16 12:09:10,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61378 states, 55843 states have (on average 1.553587737048511) internal successors, (86757), 56102 states have internal predecessors, (86757), 3735 states have call successors, (3735), 1543 states have call predecessors, (3735), 1798 states have return successors, (10550), 3988 states have call predecessors, (10550), 3733 states have call successors, (10550) [2022-11-16 12:09:10,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61378 states to 61378 states and 101042 transitions. [2022-11-16 12:09:10,812 INFO L78 Accepts]: Start accepts. Automaton has 61378 states and 101042 transitions. Word has length 124 [2022-11-16 12:09:10,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:09:10,813 INFO L495 AbstractCegarLoop]: Abstraction has 61378 states and 101042 transitions. [2022-11-16 12:09:10,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 12:09:10,813 INFO L276 IsEmpty]: Start isEmpty. Operand 61378 states and 101042 transitions. [2022-11-16 12:09:10,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-11-16 12:09:10,863 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:09:10,863 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:09:10,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-16 12:09:10,864 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:09:10,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:09:10,865 INFO L85 PathProgramCache]: Analyzing trace with hash -533440809, now seen corresponding path program 1 times [2022-11-16 12:09:10,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:09:10,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112402785] [2022-11-16 12:09:10,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:09:10,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:09:10,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:09:10,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-16 12:09:10,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:09:11,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-16 12:09:11,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:09:11,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-16 12:09:11,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:09:11,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-16 12:09:11,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:09:11,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-16 12:09:11,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:09:11,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:09:11,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:09:11,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112402785] [2022-11-16 12:09:11,087 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112402785] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:09:11,087 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:09:11,087 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:09:11,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845070367] [2022-11-16 12:09:11,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:09:11,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:09:11,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:09:11,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:09:11,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:09:11,090 INFO L87 Difference]: Start difference. First operand 61378 states and 101042 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)