./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pals_lcr.5.1.ufo.BOUNDED-10.pals+Problem12_label09.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b 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_8aea1237-3911-4150-a47c-7cc129c52f16/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aea1237-3911-4150-a47c-7cc129c52f16/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aea1237-3911-4150-a47c-7cc129c52f16/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aea1237-3911-4150-a47c-7cc129c52f16/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pals_lcr.5.1.ufo.BOUNDED-10.pals+Problem12_label09.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aea1237-3911-4150-a47c-7cc129c52f16/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aea1237-3911-4150-a47c-7cc129c52f16/bin/uautomizer-TMbwUNV5ro --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 2126042da788f2122824de6358ec68ac8216a4309db7602f144bdab8df75c67a --- 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-8393723 [2022-11-18 19:34:13,527 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 19:34:13,529 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 19:34:13,555 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 19:34:13,556 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 19:34:13,557 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 19:34:13,559 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 19:34:13,561 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 19:34:13,563 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 19:34:13,564 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 19:34:13,565 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 19:34:13,566 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 19:34:13,567 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 19:34:13,568 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 19:34:13,569 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 19:34:13,570 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 19:34:13,571 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 19:34:13,572 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 19:34:13,574 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 19:34:13,576 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 19:34:13,578 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 19:34:13,579 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 19:34:13,581 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 19:34:13,582 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 19:34:13,586 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 19:34:13,586 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 19:34:13,586 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 19:34:13,587 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 19:34:13,588 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 19:34:13,589 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 19:34:13,589 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 19:34:13,590 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 19:34:13,591 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 19:34:13,592 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 19:34:13,593 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 19:34:13,593 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 19:34:13,594 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 19:34:13,595 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 19:34:13,595 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 19:34:13,596 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 19:34:13,597 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 19:34:13,598 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aea1237-3911-4150-a47c-7cc129c52f16/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-18 19:34:13,624 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 19:34:13,624 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 19:34:13,625 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 19:34:13,625 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 19:34:13,626 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 19:34:13,626 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 19:34:13,627 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 19:34:13,627 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 19:34:13,627 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 19:34:13,627 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 19:34:13,628 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 19:34:13,628 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 19:34:13,628 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 19:34:13,628 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 19:34:13,629 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 19:34:13,629 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 19:34:13,629 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 19:34:13,629 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 19:34:13,630 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 19:34:13,630 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 19:34:13,630 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 19:34:13,630 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 19:34:13,631 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 19:34:13,631 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 19:34:13,631 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:34:13,631 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 19:34:13,632 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 19:34:13,632 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 19:34:13,632 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 19:34:13,632 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 19:34:13,633 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 19:34:13,633 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 19:34:13,633 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 19:34:13,633 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_8aea1237-3911-4150-a47c-7cc129c52f16/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aea1237-3911-4150-a47c-7cc129c52f16/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2126042da788f2122824de6358ec68ac8216a4309db7602f144bdab8df75c67a [2022-11-18 19:34:13,895 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 19:34:13,928 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 19:34:13,931 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 19:34:13,932 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 19:34:13,933 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 19:34:13,935 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aea1237-3911-4150-a47c-7cc129c52f16/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/combinations/pals_lcr.5.1.ufo.BOUNDED-10.pals+Problem12_label09.c [2022-11-18 19:34:14,013 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aea1237-3911-4150-a47c-7cc129c52f16/bin/uautomizer-TMbwUNV5ro/data/48bf62de1/c001097a60ce4d56903afbe90e230c60/FLAG3cfca4af0 [2022-11-18 19:34:14,709 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 19:34:14,709 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aea1237-3911-4150-a47c-7cc129c52f16/sv-benchmarks/c/combinations/pals_lcr.5.1.ufo.BOUNDED-10.pals+Problem12_label09.c [2022-11-18 19:34:14,734 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aea1237-3911-4150-a47c-7cc129c52f16/bin/uautomizer-TMbwUNV5ro/data/48bf62de1/c001097a60ce4d56903afbe90e230c60/FLAG3cfca4af0 [2022-11-18 19:34:14,979 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aea1237-3911-4150-a47c-7cc129c52f16/bin/uautomizer-TMbwUNV5ro/data/48bf62de1/c001097a60ce4d56903afbe90e230c60 [2022-11-18 19:34:14,982 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 19:34:14,984 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 19:34:14,985 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 19:34:14,986 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 19:34:14,989 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 19:34:14,990 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:34:14" (1/1) ... [2022-11-18 19:34:14,991 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2399d49a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:34:14, skipping insertion in model container [2022-11-18 19:34:14,992 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:34:14" (1/1) ... [2022-11-18 19:34:14,999 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 19:34:15,109 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 19:34:15,476 WARN L234 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_8aea1237-3911-4150-a47c-7cc129c52f16/sv-benchmarks/c/combinations/pals_lcr.5.1.ufo.BOUNDED-10.pals+Problem12_label09.c[11677,11690] [2022-11-18 19:34:15,544 WARN L234 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_8aea1237-3911-4150-a47c-7cc129c52f16/sv-benchmarks/c/combinations/pals_lcr.5.1.ufo.BOUNDED-10.pals+Problem12_label09.c[19425,19438] [2022-11-18 19:34:16,525 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:34:16,537 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 19:34:16,594 WARN L234 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_8aea1237-3911-4150-a47c-7cc129c52f16/sv-benchmarks/c/combinations/pals_lcr.5.1.ufo.BOUNDED-10.pals+Problem12_label09.c[11677,11690] [2022-11-18 19:34:16,605 WARN L234 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_8aea1237-3911-4150-a47c-7cc129c52f16/sv-benchmarks/c/combinations/pals_lcr.5.1.ufo.BOUNDED-10.pals+Problem12_label09.c[19425,19438] [2022-11-18 19:34:17,176 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:34:17,205 INFO L208 MainTranslator]: Completed translation [2022-11-18 19:34:17,206 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:34:17 WrapperNode [2022-11-18 19:34:17,207 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 19:34:17,208 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 19:34:17,208 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 19:34:17,208 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 19:34:17,216 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:34:17" (1/1) ... [2022-11-18 19:34:17,284 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:34:17" (1/1) ... [2022-11-18 19:34:17,745 INFO L138 Inliner]: procedures = 36, calls = 22, calls flagged for inlining = 17, calls inlined = 17, statements flattened = 5071 [2022-11-18 19:34:17,745 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 19:34:17,759 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 19:34:17,759 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 19:34:17,759 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 19:34:17,781 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:34:17" (1/1) ... [2022-11-18 19:34:17,782 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:34:17" (1/1) ... [2022-11-18 19:34:17,851 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:34:17" (1/1) ... [2022-11-18 19:34:17,851 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:34:17" (1/1) ... [2022-11-18 19:34:18,046 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:34:17" (1/1) ... [2022-11-18 19:34:18,098 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:34:17" (1/1) ... [2022-11-18 19:34:18,146 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:34:17" (1/1) ... [2022-11-18 19:34:18,164 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:34:17" (1/1) ... [2022-11-18 19:34:18,311 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 19:34:18,311 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 19:34:18,312 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 19:34:18,312 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 19:34:18,314 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:34:17" (1/1) ... [2022-11-18 19:34:18,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:34:18,334 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aea1237-3911-4150-a47c-7cc129c52f16/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:34:18,350 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aea1237-3911-4150-a47c-7cc129c52f16/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 19:34:18,373 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aea1237-3911-4150-a47c-7cc129c52f16/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 19:34:18,443 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 19:34:18,443 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 19:34:18,444 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 19:34:18,444 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 19:34:18,607 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 19:34:18,610 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 19:34:24,418 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 19:34:24,446 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 19:34:24,447 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-18 19:34:24,450 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:34:24 BoogieIcfgContainer [2022-11-18 19:34:24,450 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 19:34:24,452 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 19:34:24,452 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 19:34:24,458 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 19:34:24,458 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 07:34:14" (1/3) ... [2022-11-18 19:34:24,459 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bdb0835 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:34:24, skipping insertion in model container [2022-11-18 19:34:24,459 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:34:17" (2/3) ... [2022-11-18 19:34:24,460 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bdb0835 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:34:24, skipping insertion in model container [2022-11-18 19:34:24,460 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:34:24" (3/3) ... [2022-11-18 19:34:24,461 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.5.1.ufo.BOUNDED-10.pals+Problem12_label09.c [2022-11-18 19:34:24,481 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 19:34:24,482 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-18 19:34:24,590 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 19:34:24,606 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;@62d97a95, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 19:34:24,607 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-18 19:34:24,615 INFO L276 IsEmpty]: Start isEmpty. Operand has 899 states, 896 states have (on average 1.9051339285714286) internal successors, (1707), 898 states have internal predecessors, (1707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:34:24,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-18 19:34:24,625 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:34:24,625 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] [2022-11-18 19:34:24,626 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:34:24,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:34:24,632 INFO L85 PathProgramCache]: Analyzing trace with hash -1798739915, now seen corresponding path program 1 times [2022-11-18 19:34:24,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:34:24,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609452981] [2022-11-18 19:34:24,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:34:24,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:34:24,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:24,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:34:24,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:34:24,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609452981] [2022-11-18 19:34:24,853 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609452981] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:34:24,853 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:34:24,853 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 19:34:24,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065057444] [2022-11-18 19:34:24,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:34:24,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-18 19:34:24,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:34:24,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-18 19:34:24,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 19:34:24,896 INFO L87 Difference]: Start difference. First operand has 899 states, 896 states have (on average 1.9051339285714286) internal successors, (1707), 898 states have internal predecessors, (1707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:34:24,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:34:24,993 INFO L93 Difference]: Finished difference Result 1761 states and 3344 transitions. [2022-11-18 19:34:24,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-18 19:34:24,996 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-11-18 19:34:24,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:34:25,015 INFO L225 Difference]: With dead ends: 1761 [2022-11-18 19:34:25,022 INFO L226 Difference]: Without dead ends: 833 [2022-11-18 19:34:25,028 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 19:34:25,036 INFO L413 NwaCegarLoop]: 1641 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1641 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:34:25,039 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1641 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 19:34:25,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 833 states. [2022-11-18 19:34:25,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 833 to 833. [2022-11-18 19:34:25,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 833 states, 831 states have (on average 1.8941034897713598) internal successors, (1574), 832 states have internal predecessors, (1574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:34:25,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 833 states to 833 states and 1574 transitions. [2022-11-18 19:34:25,135 INFO L78 Accepts]: Start accepts. Automaton has 833 states and 1574 transitions. Word has length 24 [2022-11-18 19:34:25,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:34:25,136 INFO L495 AbstractCegarLoop]: Abstraction has 833 states and 1574 transitions. [2022-11-18 19:34:25,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:34:25,137 INFO L276 IsEmpty]: Start isEmpty. Operand 833 states and 1574 transitions. [2022-11-18 19:34:25,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-18 19:34:25,139 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:34:25,140 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] [2022-11-18 19:34:25,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 19:34:25,140 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:34:25,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:34:25,142 INFO L85 PathProgramCache]: Analyzing trace with hash 502082675, now seen corresponding path program 1 times [2022-11-18 19:34:25,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:34:25,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443366296] [2022-11-18 19:34:25,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:34:25,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:34:25,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:25,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:34:25,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:34:25,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443366296] [2022-11-18 19:34:25,437 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443366296] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:34:25,437 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:34:25,438 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:34:25,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516854005] [2022-11-18 19:34:25,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:34:25,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 19:34:25,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:34:25,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 19:34:25,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:34:25,441 INFO L87 Difference]: Start difference. First operand 833 states and 1574 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:34:25,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:34:25,586 INFO L93 Difference]: Finished difference Result 879 states and 1645 transitions. [2022-11-18 19:34:25,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:34:25,587 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-11-18 19:34:25,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:34:25,591 INFO L225 Difference]: With dead ends: 879 [2022-11-18 19:34:25,591 INFO L226 Difference]: Without dead ends: 833 [2022-11-18 19:34:25,592 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:34:25,593 INFO L413 NwaCegarLoop]: 1572 mSDtfsCounter, 3 mSDsluCounter, 4682 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 6254 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:34:25,594 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 6254 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 19:34:25,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 833 states. [2022-11-18 19:34:25,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 833 to 833. [2022-11-18 19:34:25,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 833 states, 831 states have (on average 1.8567990373044525) internal successors, (1543), 832 states have internal predecessors, (1543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:34:25,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 833 states to 833 states and 1543 transitions. [2022-11-18 19:34:25,625 INFO L78 Accepts]: Start accepts. Automaton has 833 states and 1543 transitions. Word has length 24 [2022-11-18 19:34:25,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:34:25,626 INFO L495 AbstractCegarLoop]: Abstraction has 833 states and 1543 transitions. [2022-11-18 19:34:25,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:34:25,626 INFO L276 IsEmpty]: Start isEmpty. Operand 833 states and 1543 transitions. [2022-11-18 19:34:25,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-18 19:34:25,628 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:34:25,628 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] [2022-11-18 19:34:25,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 19:34:25,629 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:34:25,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:34:25,630 INFO L85 PathProgramCache]: Analyzing trace with hash -1518044022, now seen corresponding path program 1 times [2022-11-18 19:34:25,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:34:25,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145660069] [2022-11-18 19:34:25,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:34:25,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:34:25,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:25,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:34:25,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:34:25,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145660069] [2022-11-18 19:34:25,914 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145660069] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:34:25,914 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:34:25,914 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 19:34:25,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046628460] [2022-11-18 19:34:25,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:34:25,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 19:34:25,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:34:25,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 19:34:25,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:34:25,918 INFO L87 Difference]: Start difference. First operand 833 states and 1543 transitions. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:34:26,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:34:26,292 INFO L93 Difference]: Finished difference Result 1253 states and 2213 transitions. [2022-11-18 19:34:26,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 19:34:26,293 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2022-11-18 19:34:26,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:34:26,302 INFO L225 Difference]: With dead ends: 1253 [2022-11-18 19:34:26,303 INFO L226 Difference]: Without dead ends: 1211 [2022-11-18 19:34:26,308 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2022-11-18 19:34:26,309 INFO L413 NwaCegarLoop]: 1539 mSDtfsCounter, 7953 mSDsluCounter, 1207 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7953 SdHoareTripleChecker+Valid, 2746 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:34:26,310 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7953 Valid, 2746 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 19:34:26,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1211 states. [2022-11-18 19:34:26,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1211 to 873. [2022-11-18 19:34:26,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 873 states, 871 states have (on average 1.8450057405281286) internal successors, (1607), 872 states have internal predecessors, (1607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:34:26,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 873 states to 873 states and 1607 transitions. [2022-11-18 19:34:26,345 INFO L78 Accepts]: Start accepts. Automaton has 873 states and 1607 transitions. Word has length 54 [2022-11-18 19:34:26,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:34:26,346 INFO L495 AbstractCegarLoop]: Abstraction has 873 states and 1607 transitions. [2022-11-18 19:34:26,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:34:26,346 INFO L276 IsEmpty]: Start isEmpty. Operand 873 states and 1607 transitions. [2022-11-18 19:34:26,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-18 19:34:26,348 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:34:26,348 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] [2022-11-18 19:34:26,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 19:34:26,349 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:34:26,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:34:26,350 INFO L85 PathProgramCache]: Analyzing trace with hash 32878714, now seen corresponding path program 1 times [2022-11-18 19:34:26,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:34:26,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716935154] [2022-11-18 19:34:26,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:34:26,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:34:26,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:26,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:34:26,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:34:26,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716935154] [2022-11-18 19:34:26,465 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716935154] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:34:26,465 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:34:26,465 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:34:26,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416847760] [2022-11-18 19:34:26,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:34:26,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:34:26,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:34:26,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:34:26,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:34:26,468 INFO L87 Difference]: Start difference. First operand 873 states and 1607 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:34:26,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:34:26,519 INFO L93 Difference]: Finished difference Result 1026 states and 1850 transitions. [2022-11-18 19:34:26,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:34:26,520 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2022-11-18 19:34:26,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:34:26,524 INFO L225 Difference]: With dead ends: 1026 [2022-11-18 19:34:26,525 INFO L226 Difference]: Without dead ends: 944 [2022-11-18 19:34:26,526 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:34:26,527 INFO L413 NwaCegarLoop]: 1541 mSDtfsCounter, 1482 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1482 SdHoareTripleChecker+Valid, 1603 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:34:26,527 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1482 Valid, 1603 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 19:34:26,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 944 states. [2022-11-18 19:34:26,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 944 to 942. [2022-11-18 19:34:26,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 942 states, 940 states have (on average 1.824468085106383) internal successors, (1715), 941 states have internal predecessors, (1715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:34:26,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 942 states to 942 states and 1715 transitions. [2022-11-18 19:34:26,588 INFO L78 Accepts]: Start accepts. Automaton has 942 states and 1715 transitions. Word has length 56 [2022-11-18 19:34:26,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:34:26,589 INFO L495 AbstractCegarLoop]: Abstraction has 942 states and 1715 transitions. [2022-11-18 19:34:26,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:34:26,589 INFO L276 IsEmpty]: Start isEmpty. Operand 942 states and 1715 transitions. [2022-11-18 19:34:26,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-18 19:34:26,591 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:34:26,591 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] [2022-11-18 19:34:26,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 19:34:26,591 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:34:26,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:34:26,592 INFO L85 PathProgramCache]: Analyzing trace with hash 99372226, now seen corresponding path program 1 times [2022-11-18 19:34:26,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:34:26,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128864706] [2022-11-18 19:34:26,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:34:26,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:34:26,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:26,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:34:26,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:34:26,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128864706] [2022-11-18 19:34:26,917 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128864706] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:34:26,919 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:34:26,919 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 19:34:26,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773348650] [2022-11-18 19:34:26,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:34:26,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 19:34:26,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:34:26,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 19:34:26,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:34:26,921 INFO L87 Difference]: Start difference. First operand 942 states and 1715 transitions. Second operand has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:34:27,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:34:27,187 INFO L93 Difference]: Finished difference Result 1095 states and 1955 transitions. [2022-11-18 19:34:27,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 19:34:27,187 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2022-11-18 19:34:27,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:34:27,192 INFO L225 Difference]: With dead ends: 1095 [2022-11-18 19:34:27,192 INFO L226 Difference]: Without dead ends: 944 [2022-11-18 19:34:27,193 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2022-11-18 19:34:27,194 INFO L413 NwaCegarLoop]: 1536 mSDtfsCounter, 4599 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4599 SdHoareTripleChecker+Valid, 1789 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:34:27,195 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4599 Valid, 1789 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 19:34:27,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 944 states. [2022-11-18 19:34:27,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 944 to 942. [2022-11-18 19:34:27,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 942 states, 940 states have (on average 1.8223404255319149) internal successors, (1713), 941 states have internal predecessors, (1713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:34:27,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 942 states to 942 states and 1713 transitions. [2022-11-18 19:34:27,231 INFO L78 Accepts]: Start accepts. Automaton has 942 states and 1713 transitions. Word has length 56 [2022-11-18 19:34:27,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:34:27,235 INFO L495 AbstractCegarLoop]: Abstraction has 942 states and 1713 transitions. [2022-11-18 19:34:27,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:34:27,235 INFO L276 IsEmpty]: Start isEmpty. Operand 942 states and 1713 transitions. [2022-11-18 19:34:27,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-11-18 19:34:27,239 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:34:27,240 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] [2022-11-18 19:34:27,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 19:34:27,241 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:34:27,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:34:27,247 INFO L85 PathProgramCache]: Analyzing trace with hash -1629151369, now seen corresponding path program 1 times [2022-11-18 19:34:27,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:34:27,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499135862] [2022-11-18 19:34:27,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:34:27,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:34:27,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:27,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:34:27,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:34:27,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499135862] [2022-11-18 19:34:27,636 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499135862] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:34:27,636 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:34:27,636 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 19:34:27,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236888523] [2022-11-18 19:34:27,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:34:27,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 19:34:27,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:34:27,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 19:34:27,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:34:27,639 INFO L87 Difference]: Start difference. First operand 942 states and 1713 transitions. Second operand has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:34:27,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:34:27,874 INFO L93 Difference]: Finished difference Result 1090 states and 1940 transitions. [2022-11-18 19:34:27,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 19:34:27,875 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2022-11-18 19:34:27,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:34:27,882 INFO L225 Difference]: With dead ends: 1090 [2022-11-18 19:34:27,882 INFO L226 Difference]: Without dead ends: 1088 [2022-11-18 19:34:27,883 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2022-11-18 19:34:27,888 INFO L413 NwaCegarLoop]: 1598 mSDtfsCounter, 394 mSDsluCounter, 9035 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 394 SdHoareTripleChecker+Valid, 10633 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:34:27,889 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [394 Valid, 10633 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 19:34:27,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1088 states. [2022-11-18 19:34:27,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1088 to 948. [2022-11-18 19:34:27,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 948 states, 946 states have (on average 1.8160676532769555) internal successors, (1718), 947 states have internal predecessors, (1718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:34:27,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 948 states to 948 states and 1718 transitions. [2022-11-18 19:34:27,923 INFO L78 Accepts]: Start accepts. Automaton has 948 states and 1718 transitions. Word has length 57 [2022-11-18 19:34:27,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:34:27,924 INFO L495 AbstractCegarLoop]: Abstraction has 948 states and 1718 transitions. [2022-11-18 19:34:27,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:34:27,924 INFO L276 IsEmpty]: Start isEmpty. Operand 948 states and 1718 transitions. [2022-11-18 19:34:27,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-11-18 19:34:27,925 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:34:27,925 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] [2022-11-18 19:34:27,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 19:34:27,926 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:34:27,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:34:27,927 INFO L85 PathProgramCache]: Analyzing trace with hash 1409361730, now seen corresponding path program 1 times [2022-11-18 19:34:27,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:34:27,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731771985] [2022-11-18 19:34:27,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:34:27,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:34:27,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:28,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:34:28,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:34:28,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731771985] [2022-11-18 19:34:28,015 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731771985] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:34:28,015 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:34:28,015 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:34:28,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139832120] [2022-11-18 19:34:28,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:34:28,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:34:28,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:34:28,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:34:28,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:34:28,017 INFO L87 Difference]: Start difference. First operand 948 states and 1718 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:34:28,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:34:28,073 INFO L93 Difference]: Finished difference Result 1118 states and 1979 transitions. [2022-11-18 19:34:28,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:34:28,074 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2022-11-18 19:34:28,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:34:28,079 INFO L225 Difference]: With dead ends: 1118 [2022-11-18 19:34:28,079 INFO L226 Difference]: Without dead ends: 1030 [2022-11-18 19:34:28,081 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:34:28,083 INFO L413 NwaCegarLoop]: 1595 mSDtfsCounter, 1496 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1496 SdHoareTripleChecker+Valid, 1663 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:34:28,083 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1496 Valid, 1663 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 19:34:28,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1030 states. [2022-11-18 19:34:28,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1030 to 1028. [2022-11-18 19:34:28,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1028 states, 1026 states have (on average 1.7923976608187135) internal successors, (1839), 1027 states have internal predecessors, (1839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:34:28,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1028 states to 1028 states and 1839 transitions. [2022-11-18 19:34:28,128 INFO L78 Accepts]: Start accepts. Automaton has 1028 states and 1839 transitions. Word has length 58 [2022-11-18 19:34:28,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:34:28,129 INFO L495 AbstractCegarLoop]: Abstraction has 1028 states and 1839 transitions. [2022-11-18 19:34:28,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:34:28,129 INFO L276 IsEmpty]: Start isEmpty. Operand 1028 states and 1839 transitions. [2022-11-18 19:34:28,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-11-18 19:34:28,130 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:34:28,130 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] [2022-11-18 19:34:28,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 19:34:28,131 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:34:28,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:34:28,131 INFO L85 PathProgramCache]: Analyzing trace with hash -1383487166, now seen corresponding path program 1 times [2022-11-18 19:34:28,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:34:28,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931215724] [2022-11-18 19:34:28,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:34:28,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:34:28,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:28,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:34:28,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:34:28,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931215724] [2022-11-18 19:34:28,184 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931215724] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:34:28,184 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:34:28,184 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:34:28,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770111715] [2022-11-18 19:34:28,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:34:28,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:34:28,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:34:28,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:34:28,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:34:28,187 INFO L87 Difference]: Start difference. First operand 1028 states and 1839 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:34:28,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:34:28,265 INFO L93 Difference]: Finished difference Result 1474 states and 2519 transitions. [2022-11-18 19:34:28,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:34:28,266 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2022-11-18 19:34:28,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:34:28,273 INFO L225 Difference]: With dead ends: 1474 [2022-11-18 19:34:28,273 INFO L226 Difference]: Without dead ends: 1239 [2022-11-18 19:34:28,274 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:34:28,275 INFO L413 NwaCegarLoop]: 1587 mSDtfsCounter, 1492 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1492 SdHoareTripleChecker+Valid, 1663 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:34:28,275 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1492 Valid, 1663 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 19:34:28,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1239 states. [2022-11-18 19:34:28,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1239 to 1237. [2022-11-18 19:34:28,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1237 states, 1235 states have (on average 1.7417004048582996) internal successors, (2151), 1236 states have internal predecessors, (2151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:34:28,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1237 states to 1237 states and 2151 transitions. [2022-11-18 19:34:28,346 INFO L78 Accepts]: Start accepts. Automaton has 1237 states and 2151 transitions. Word has length 58 [2022-11-18 19:34:28,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:34:28,347 INFO L495 AbstractCegarLoop]: Abstraction has 1237 states and 2151 transitions. [2022-11-18 19:34:28,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:34:28,347 INFO L276 IsEmpty]: Start isEmpty. Operand 1237 states and 2151 transitions. [2022-11-18 19:34:28,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-11-18 19:34:28,348 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:34:28,349 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] [2022-11-18 19:34:28,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-18 19:34:28,349 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:34:28,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:34:28,351 INFO L85 PathProgramCache]: Analyzing trace with hash 696011330, now seen corresponding path program 1 times [2022-11-18 19:34:28,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:34:28,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106902759] [2022-11-18 19:34:28,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:34:28,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:34:28,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:28,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:34:28,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:34:28,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106902759] [2022-11-18 19:34:28,492 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106902759] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:34:28,492 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:34:28,493 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:34:28,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133662279] [2022-11-18 19:34:28,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:34:28,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:34:28,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:34:28,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:34:28,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:34:28,495 INFO L87 Difference]: Start difference. First operand 1237 states and 2151 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:34:28,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:34:28,633 INFO L93 Difference]: Finished difference Result 2077 states and 3413 transitions. [2022-11-18 19:34:28,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:34:28,634 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2022-11-18 19:34:28,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:34:28,641 INFO L225 Difference]: With dead ends: 2077 [2022-11-18 19:34:28,641 INFO L226 Difference]: Without dead ends: 1633 [2022-11-18 19:34:28,642 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:34:28,645 INFO L413 NwaCegarLoop]: 1585 mSDtfsCounter, 1490 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1490 SdHoareTripleChecker+Valid, 1665 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:34:28,646 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1490 Valid, 1665 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 19:34:28,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1633 states. [2022-11-18 19:34:28,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1633 to 1631. [2022-11-18 19:34:28,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1631 states, 1629 states have (on average 1.6740331491712708) internal successors, (2727), 1630 states have internal predecessors, (2727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:34:28,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1631 states to 1631 states and 2727 transitions. [2022-11-18 19:34:28,795 INFO L78 Accepts]: Start accepts. Automaton has 1631 states and 2727 transitions. Word has length 58 [2022-11-18 19:34:28,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:34:28,795 INFO L495 AbstractCegarLoop]: Abstraction has 1631 states and 2727 transitions. [2022-11-18 19:34:28,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:34:28,796 INFO L276 IsEmpty]: Start isEmpty. Operand 1631 states and 2727 transitions. [2022-11-18 19:34:28,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-11-18 19:34:28,796 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:34:28,797 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] [2022-11-18 19:34:28,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-18 19:34:28,797 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:34:28,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:34:28,807 INFO L85 PathProgramCache]: Analyzing trace with hash -1818023102, now seen corresponding path program 1 times [2022-11-18 19:34:28,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:34:28,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049288809] [2022-11-18 19:34:28,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:34:28,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:34:28,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:28,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:34:28,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:34:28,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049288809] [2022-11-18 19:34:28,872 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049288809] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:34:28,872 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:34:28,873 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:34:28,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210175101] [2022-11-18 19:34:28,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:34:28,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:34:28,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:34:28,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:34:28,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:34:28,874 INFO L87 Difference]: Start difference. First operand 1631 states and 2727 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:34:29,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:34:29,106 INFO L93 Difference]: Finished difference Result 3211 states and 5057 transitions. [2022-11-18 19:34:29,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:34:29,107 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2022-11-18 19:34:29,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:34:29,115 INFO L225 Difference]: With dead ends: 3211 [2022-11-18 19:34:29,115 INFO L226 Difference]: Without dead ends: 2373 [2022-11-18 19:34:29,120 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:34:29,120 INFO L413 NwaCegarLoop]: 1583 mSDtfsCounter, 1488 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1488 SdHoareTripleChecker+Valid, 1667 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:34:29,121 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1488 Valid, 1667 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 19:34:29,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2373 states. [2022-11-18 19:34:29,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2373 to 2371. [2022-11-18 19:34:29,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2371 states, 2369 states have (on average 1.5968763191219923) internal successors, (3783), 2370 states have internal predecessors, (3783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:34:29,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2371 states to 2371 states and 3783 transitions. [2022-11-18 19:34:29,336 INFO L78 Accepts]: Start accepts. Automaton has 2371 states and 3783 transitions. Word has length 58 [2022-11-18 19:34:29,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:34:29,337 INFO L495 AbstractCegarLoop]: Abstraction has 2371 states and 3783 transitions. [2022-11-18 19:34:29,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:34:29,337 INFO L276 IsEmpty]: Start isEmpty. Operand 2371 states and 3783 transitions. [2022-11-18 19:34:29,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-11-18 19:34:29,338 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:34:29,338 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] [2022-11-18 19:34:29,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-18 19:34:29,339 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:34:29,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:34:29,339 INFO L85 PathProgramCache]: Analyzing trace with hash 1673218114, now seen corresponding path program 1 times [2022-11-18 19:34:29,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:34:29,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720052730] [2022-11-18 19:34:29,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:34:29,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:34:29,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:29,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:34:29,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:34:29,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720052730] [2022-11-18 19:34:29,410 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720052730] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:34:29,410 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:34:29,410 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:34:29,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955839260] [2022-11-18 19:34:29,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:34:29,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:34:29,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:34:29,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:34:29,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:34:29,412 INFO L87 Difference]: Start difference. First operand 2371 states and 3783 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:34:29,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:34:29,849 INFO L93 Difference]: Finished difference Result 5335 states and 8057 transitions. [2022-11-18 19:34:29,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:34:29,850 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2022-11-18 19:34:29,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:34:29,862 INFO L225 Difference]: With dead ends: 5335 [2022-11-18 19:34:29,863 INFO L226 Difference]: Without dead ends: 3757 [2022-11-18 19:34:29,865 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:34:29,866 INFO L413 NwaCegarLoop]: 1597 mSDtfsCounter, 1494 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1494 SdHoareTripleChecker+Valid, 1669 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:34:29,866 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1494 Valid, 1669 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 19:34:29,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3757 states. [2022-11-18 19:34:30,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3757 to 3755. [2022-11-18 19:34:30,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3755 states, 3753 states have (on average 1.5195843325339728) internal successors, (5703), 3754 states have internal predecessors, (5703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:34:30,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3755 states to 3755 states and 5703 transitions. [2022-11-18 19:34:30,291 INFO L78 Accepts]: Start accepts. Automaton has 3755 states and 5703 transitions. Word has length 58 [2022-11-18 19:34:30,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:34:30,292 INFO L495 AbstractCegarLoop]: Abstraction has 3755 states and 5703 transitions. [2022-11-18 19:34:30,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:34:30,292 INFO L276 IsEmpty]: Start isEmpty. Operand 3755 states and 5703 transitions. [2022-11-18 19:34:30,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-18 19:34:30,293 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:34:30,293 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] [2022-11-18 19:34:30,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-18 19:34:30,293 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:34:30,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:34:30,294 INFO L85 PathProgramCache]: Analyzing trace with hash 701701722, now seen corresponding path program 1 times [2022-11-18 19:34:30,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:34:30,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441805419] [2022-11-18 19:34:30,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:34:30,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:34:30,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:30,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:34:30,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:34:30,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441805419] [2022-11-18 19:34:30,501 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441805419] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:34:30,501 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:34:30,501 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:34:30,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718253665] [2022-11-18 19:34:30,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:34:30,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:34:30,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:34:30,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:34:30,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:34:30,503 INFO L87 Difference]: Start difference. First operand 3755 states and 5703 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:34:39,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:34:39,632 INFO L93 Difference]: Finished difference Result 6010 states and 10012 transitions. [2022-11-18 19:34:39,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 19:34:39,633 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-11-18 19:34:39,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:34:39,652 INFO L225 Difference]: With dead ends: 6010 [2022-11-18 19:34:39,653 INFO L226 Difference]: Without dead ends: 5257 [2022-11-18 19:34:39,655 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:34:39,656 INFO L413 NwaCegarLoop]: 779 mSDtfsCounter, 2387 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 5354 mSolverCounterSat, 1153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2387 SdHoareTripleChecker+Valid, 797 SdHoareTripleChecker+Invalid, 6507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1153 IncrementalHoareTripleChecker+Valid, 5354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2022-11-18 19:34:39,656 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2387 Valid, 797 Invalid, 6507 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1153 Valid, 5354 Invalid, 0 Unknown, 0 Unchecked, 8.3s Time] [2022-11-18 19:34:39,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5257 states. [2022-11-18 19:34:40,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5257 to 5257. [2022-11-18 19:34:40,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5257 states, 5255 states have (on average 1.487535680304472) internal successors, (7817), 5256 states have internal predecessors, (7817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:34:40,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5257 states to 5257 states and 7817 transitions. [2022-11-18 19:34:40,198 INFO L78 Accepts]: Start accepts. Automaton has 5257 states and 7817 transitions. Word has length 67 [2022-11-18 19:34:40,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:34:40,198 INFO L495 AbstractCegarLoop]: Abstraction has 5257 states and 7817 transitions. [2022-11-18 19:34:40,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:34:40,198 INFO L276 IsEmpty]: Start isEmpty. Operand 5257 states and 7817 transitions. [2022-11-18 19:34:40,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-18 19:34:40,201 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:34:40,201 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:34:40,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-18 19:34:40,201 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:34:40,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:34:40,202 INFO L85 PathProgramCache]: Analyzing trace with hash 273219202, now seen corresponding path program 1 times [2022-11-18 19:34:40,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:34:40,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50775355] [2022-11-18 19:34:40,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:34:40,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:34:40,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:40,397 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 19:34:40,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:34:40,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50775355] [2022-11-18 19:34:40,398 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50775355] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:34:40,398 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:34:40,398 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 19:34:40,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587064944] [2022-11-18 19:34:40,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:34:40,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 19:34:40,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:34:40,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 19:34:40,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:34:40,400 INFO L87 Difference]: Start difference. First operand 5257 states and 7817 transitions. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:34:42,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:34:42,470 INFO L93 Difference]: Finished difference Result 19861 states and 28623 transitions. [2022-11-18 19:34:42,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 19:34:42,471 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-11-18 19:34:42,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:34:42,525 INFO L225 Difference]: With dead ends: 19861 [2022-11-18 19:34:42,525 INFO L226 Difference]: Without dead ends: 17747 [2022-11-18 19:34:42,533 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-11-18 19:34:42,534 INFO L413 NwaCegarLoop]: 1604 mSDtfsCounter, 6308 mSDsluCounter, 1964 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6308 SdHoareTripleChecker+Valid, 3568 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:34:42,534 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6308 Valid, 3568 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 19:34:42,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17747 states. [2022-11-18 19:34:43,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17747 to 7801. [2022-11-18 19:34:43,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7801 states, 7799 states have (on average 1.4618540838569047) internal successors, (11401), 7800 states have internal predecessors, (11401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:34:43,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7801 states to 7801 states and 11401 transitions. [2022-11-18 19:34:43,592 INFO L78 Accepts]: Start accepts. Automaton has 7801 states and 11401 transitions. Word has length 77 [2022-11-18 19:34:43,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:34:43,593 INFO L495 AbstractCegarLoop]: Abstraction has 7801 states and 11401 transitions. [2022-11-18 19:34:43,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:34:43,593 INFO L276 IsEmpty]: Start isEmpty. Operand 7801 states and 11401 transitions. [2022-11-18 19:34:43,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-18 19:34:43,596 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:34:43,596 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:34:43,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-18 19:34:43,597 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:34:43,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:34:43,597 INFO L85 PathProgramCache]: Analyzing trace with hash 1775337602, now seen corresponding path program 1 times [2022-11-18 19:34:43,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:34:43,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710703659] [2022-11-18 19:34:43,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:34:43,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:34:43,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:43,764 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 19:34:43,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:34:43,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710703659] [2022-11-18 19:34:43,765 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710703659] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:34:43,765 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:34:43,766 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 19:34:43,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060157972] [2022-11-18 19:34:43,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:34:43,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 19:34:43,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:34:43,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 19:34:43,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:34:43,776 INFO L87 Difference]: Start difference. First operand 7801 states and 11401 transitions. Second operand has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:34:46,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:34:46,390 INFO L93 Difference]: Finished difference Result 22821 states and 32815 transitions. [2022-11-18 19:34:46,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 19:34:46,391 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-11-18 19:34:46,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:34:46,438 INFO L225 Difference]: With dead ends: 22821 [2022-11-18 19:34:46,438 INFO L226 Difference]: Without dead ends: 19859 [2022-11-18 19:34:46,447 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-11-18 19:34:46,447 INFO L413 NwaCegarLoop]: 1604 mSDtfsCounter, 6352 mSDsluCounter, 2011 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6352 SdHoareTripleChecker+Valid, 3615 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:34:46,448 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6352 Valid, 3615 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 19:34:46,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19859 states. [2022-11-18 19:34:47,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19859 to 11817. [2022-11-18 19:34:47,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11817 states, 11815 states have (on average 1.4429961912822682) internal successors, (17049), 11816 states have internal predecessors, (17049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:34:48,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11817 states to 11817 states and 17049 transitions. [2022-11-18 19:34:48,000 INFO L78 Accepts]: Start accepts. Automaton has 11817 states and 17049 transitions. Word has length 77 [2022-11-18 19:34:48,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:34:48,001 INFO L495 AbstractCegarLoop]: Abstraction has 11817 states and 17049 transitions. [2022-11-18 19:34:48,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:34:48,001 INFO L276 IsEmpty]: Start isEmpty. Operand 11817 states and 17049 transitions. [2022-11-18 19:34:48,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-18 19:34:48,004 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:34:48,004 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:34:48,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-18 19:34:48,005 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:34:48,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:34:48,005 INFO L85 PathProgramCache]: Analyzing trace with hash -440131198, now seen corresponding path program 1 times [2022-11-18 19:34:48,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:34:48,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450313023] [2022-11-18 19:34:48,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:34:48,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:34:48,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:48,163 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-18 19:34:48,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:34:48,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450313023] [2022-11-18 19:34:48,164 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450313023] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:34:48,164 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:34:48,164 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 19:34:48,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411430660] [2022-11-18 19:34:48,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:34:48,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 19:34:48,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:34:48,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 19:34:48,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:34:48,166 INFO L87 Difference]: Start difference. First operand 11817 states and 17049 transitions. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:34:51,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:34:51,069 INFO L93 Difference]: Finished difference Result 25781 states and 36991 transitions. [2022-11-18 19:34:51,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 19:34:51,070 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-11-18 19:34:51,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:34:51,120 INFO L225 Difference]: With dead ends: 25781 [2022-11-18 19:34:51,120 INFO L226 Difference]: Without dead ends: 22819 [2022-11-18 19:34:51,133 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-11-18 19:34:51,135 INFO L413 NwaCegarLoop]: 1602 mSDtfsCounter, 6398 mSDsluCounter, 1976 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6398 SdHoareTripleChecker+Valid, 3578 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:34:51,136 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6398 Valid, 3578 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 19:34:51,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22819 states. [2022-11-18 19:34:53,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22819 to 14777. [2022-11-18 19:34:53,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14777 states, 14775 states have (on average 1.4365482233502538) internal successors, (21225), 14776 states have internal predecessors, (21225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:34:53,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14777 states to 14777 states and 21225 transitions. [2022-11-18 19:34:53,065 INFO L78 Accepts]: Start accepts. Automaton has 14777 states and 21225 transitions. Word has length 77 [2022-11-18 19:34:53,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:34:53,065 INFO L495 AbstractCegarLoop]: Abstraction has 14777 states and 21225 transitions. [2022-11-18 19:34:53,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:34:53,066 INFO L276 IsEmpty]: Start isEmpty. Operand 14777 states and 21225 transitions. [2022-11-18 19:34:53,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-18 19:34:53,069 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:34:53,069 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:34:53,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-18 19:34:53,069 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:34:53,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:34:53,070 INFO L85 PathProgramCache]: Analyzing trace with hash 1340801666, now seen corresponding path program 1 times [2022-11-18 19:34:53,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:34:53,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879435846] [2022-11-18 19:34:53,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:34:53,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:34:53,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:53,236 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-18 19:34:53,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:34:53,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879435846] [2022-11-18 19:34:53,237 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879435846] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:34:53,237 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:34:53,237 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 19:34:53,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620764463] [2022-11-18 19:34:53,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:34:53,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 19:34:53,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:34:53,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 19:34:53,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:34:53,239 INFO L87 Difference]: Start difference. First operand 14777 states and 21225 transitions. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:34:56,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:34:56,456 INFO L93 Difference]: Finished difference Result 28741 states and 41167 transitions. [2022-11-18 19:34:56,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 19:34:56,457 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-11-18 19:34:56,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:34:56,511 INFO L225 Difference]: With dead ends: 28741 [2022-11-18 19:34:56,511 INFO L226 Difference]: Without dead ends: 25779 [2022-11-18 19:34:56,519 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-11-18 19:34:56,520 INFO L413 NwaCegarLoop]: 1602 mSDtfsCounter, 6356 mSDsluCounter, 2002 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6356 SdHoareTripleChecker+Valid, 3604 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:34:56,521 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6356 Valid, 3604 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 19:34:56,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25779 states. [2022-11-18 19:34:59,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25779 to 17737. [2022-11-18 19:34:59,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17737 states, 17735 states have (on average 1.4322526078376092) internal successors, (25401), 17736 states have internal predecessors, (25401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:34:59,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17737 states to 17737 states and 25401 transitions. [2022-11-18 19:34:59,447 INFO L78 Accepts]: Start accepts. Automaton has 17737 states and 25401 transitions. Word has length 77 [2022-11-18 19:34:59,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:34:59,448 INFO L495 AbstractCegarLoop]: Abstraction has 17737 states and 25401 transitions. [2022-11-18 19:34:59,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:34:59,448 INFO L276 IsEmpty]: Start isEmpty. Operand 17737 states and 25401 transitions. [2022-11-18 19:34:59,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-18 19:34:59,451 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:34:59,451 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:34:59,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-18 19:34:59,452 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:34:59,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:34:59,452 INFO L85 PathProgramCache]: Analyzing trace with hash 537075586, now seen corresponding path program 1 times [2022-11-18 19:34:59,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:34:59,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301397366] [2022-11-18 19:34:59,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:34:59,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:34:59,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:59,617 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-18 19:34:59,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:34:59,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301397366] [2022-11-18 19:34:59,618 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301397366] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:34:59,618 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:34:59,618 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 19:34:59,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065266557] [2022-11-18 19:34:59,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:34:59,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 19:34:59,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:34:59,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 19:34:59,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:34:59,620 INFO L87 Difference]: Start difference. First operand 17737 states and 25401 transitions. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:35:03,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:35:03,379 INFO L93 Difference]: Finished difference Result 31701 states and 45343 transitions. [2022-11-18 19:35:03,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 19:35:03,380 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-11-18 19:35:03,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:35:03,421 INFO L225 Difference]: With dead ends: 31701 [2022-11-18 19:35:03,421 INFO L226 Difference]: Without dead ends: 28739 [2022-11-18 19:35:03,430 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-11-18 19:35:03,430 INFO L413 NwaCegarLoop]: 1601 mSDtfsCounter, 6308 mSDsluCounter, 2097 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6308 SdHoareTripleChecker+Valid, 3698 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:35:03,431 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6308 Valid, 3698 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 19:35:03,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28739 states. [2022-11-18 19:35:06,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28739 to 20697. [2022-11-18 19:35:06,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20697 states, 20695 states have (on average 1.4291857936699686) internal successors, (29577), 20696 states have internal predecessors, (29577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:35:06,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20697 states to 20697 states and 29577 transitions. [2022-11-18 19:35:06,662 INFO L78 Accepts]: Start accepts. Automaton has 20697 states and 29577 transitions. Word has length 77 [2022-11-18 19:35:06,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:35:06,662 INFO L495 AbstractCegarLoop]: Abstraction has 20697 states and 29577 transitions. [2022-11-18 19:35:06,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:35:06,662 INFO L276 IsEmpty]: Start isEmpty. Operand 20697 states and 29577 transitions. [2022-11-18 19:35:06,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-11-18 19:35:06,666 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:35:06,666 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:35:06,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-18 19:35:06,667 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:35:06,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:35:06,667 INFO L85 PathProgramCache]: Analyzing trace with hash 895246760, now seen corresponding path program 1 times [2022-11-18 19:35:06,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:35:06,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780474687] [2022-11-18 19:35:06,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:35:06,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:35:06,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:06,778 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:35:06,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:35:06,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780474687] [2022-11-18 19:35:06,779 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780474687] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:35:06,779 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:35:06,779 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:35:06,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016525195] [2022-11-18 19:35:06,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:35:06,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:35:06,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:35:06,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:35:06,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:35:06,781 INFO L87 Difference]: Start difference. First operand 20697 states and 29577 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:35:09,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:35:09,558 INFO L93 Difference]: Finished difference Result 39101 states and 55563 transitions. [2022-11-18 19:35:09,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:35:09,559 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-11-18 19:35:09,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:35:09,586 INFO L225 Difference]: With dead ends: 39101 [2022-11-18 19:35:09,586 INFO L226 Difference]: Without dead ends: 20699 [2022-11-18 19:35:09,606 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:35:09,606 INFO L413 NwaCegarLoop]: 1577 mSDtfsCounter, 45 mSDsluCounter, 1531 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 3108 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:35:09,607 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 3108 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 19:35:09,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20699 states. [2022-11-18 19:35:12,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20699 to 20697. [2022-11-18 19:35:12,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20697 states, 20695 states have (on average 1.4148828219376661) internal successors, (29281), 20696 states have internal predecessors, (29281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:35:12,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20697 states to 20697 states and 29281 transitions. [2022-11-18 19:35:12,418 INFO L78 Accepts]: Start accepts. Automaton has 20697 states and 29281 transitions. Word has length 78 [2022-11-18 19:35:12,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:35:12,418 INFO L495 AbstractCegarLoop]: Abstraction has 20697 states and 29281 transitions. [2022-11-18 19:35:12,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:35:12,418 INFO L276 IsEmpty]: Start isEmpty. Operand 20697 states and 29281 transitions. [2022-11-18 19:35:12,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-18 19:35:12,421 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:35:12,421 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:35:12,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-18 19:35:12,422 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:35:12,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:35:12,422 INFO L85 PathProgramCache]: Analyzing trace with hash -615640646, now seen corresponding path program 1 times [2022-11-18 19:35:12,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:35:12,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325277012] [2022-11-18 19:35:12,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:35:12,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:35:12,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:12,523 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:35:12,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:35:12,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325277012] [2022-11-18 19:35:12,524 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325277012] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:35:12,524 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:35:12,524 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:35:12,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367364739] [2022-11-18 19:35:12,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:35:12,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:35:12,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:35:12,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:35:12,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:35:12,526 INFO L87 Difference]: Start difference. First operand 20697 states and 29281 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:35:13,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:35:13,638 INFO L93 Difference]: Finished difference Result 27584 states and 38975 transitions. [2022-11-18 19:35:13,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:35:13,638 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-11-18 19:35:13,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:35:13,649 INFO L225 Difference]: With dead ends: 27584 [2022-11-18 19:35:13,649 INFO L226 Difference]: Without dead ends: 9182 [2022-11-18 19:35:13,665 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:35:13,666 INFO L413 NwaCegarLoop]: 1575 mSDtfsCounter, 39 mSDsluCounter, 1530 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 3105 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:35:13,666 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 3105 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 19:35:13,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9182 states. [2022-11-18 19:35:14,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9182 to 9174. [2022-11-18 19:35:14,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9174 states, 9172 states have (on average 1.4363279546445704) internal successors, (13174), 9173 states have internal predecessors, (13174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:35:14,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9174 states to 9174 states and 13174 transitions. [2022-11-18 19:35:14,658 INFO L78 Accepts]: Start accepts. Automaton has 9174 states and 13174 transitions. Word has length 79 [2022-11-18 19:35:14,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:35:14,659 INFO L495 AbstractCegarLoop]: Abstraction has 9174 states and 13174 transitions. [2022-11-18 19:35:14,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:35:14,659 INFO L276 IsEmpty]: Start isEmpty. Operand 9174 states and 13174 transitions. [2022-11-18 19:35:14,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-18 19:35:14,661 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:35:14,663 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:35:14,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-18 19:35:14,663 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:35:14,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:35:14,664 INFO L85 PathProgramCache]: Analyzing trace with hash -1683802150, now seen corresponding path program 1 times [2022-11-18 19:35:14,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:35:14,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453995802] [2022-11-18 19:35:14,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:35:14,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:35:14,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:14,803 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:35:14,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:35:14,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453995802] [2022-11-18 19:35:14,804 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453995802] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:35:14,804 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:35:14,804 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:35:14,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017167869] [2022-11-18 19:35:14,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:35:14,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:35:14,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:35:14,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:35:14,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:35:14,806 INFO L87 Difference]: Start difference. First operand 9174 states and 13174 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:35:15,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:35:15,627 INFO L93 Difference]: Finished difference Result 12610 states and 17960 transitions. [2022-11-18 19:35:15,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:35:15,628 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2022-11-18 19:35:15,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:35:15,635 INFO L225 Difference]: With dead ends: 12610 [2022-11-18 19:35:15,636 INFO L226 Difference]: Without dead ends: 5744 [2022-11-18 19:35:15,645 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:35:15,647 INFO L413 NwaCegarLoop]: 1569 mSDtfsCounter, 41 mSDsluCounter, 1515 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 3084 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:35:15,647 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 3084 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 19:35:15,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5744 states. [2022-11-18 19:35:16,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5744 to 5742. [2022-11-18 19:35:16,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5742 states, 5740 states have (on average 1.4526132404181185) internal successors, (8338), 5741 states have internal predecessors, (8338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:35:16,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5742 states to 5742 states and 8338 transitions. [2022-11-18 19:35:16,208 INFO L78 Accepts]: Start accepts. Automaton has 5742 states and 8338 transitions. Word has length 80 [2022-11-18 19:35:16,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:35:16,208 INFO L495 AbstractCegarLoop]: Abstraction has 5742 states and 8338 transitions. [2022-11-18 19:35:16,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:35:16,209 INFO L276 IsEmpty]: Start isEmpty. Operand 5742 states and 8338 transitions. [2022-11-18 19:35:16,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-11-18 19:35:16,210 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:35:16,211 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:35:16,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-18 19:35:16,211 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:35:16,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:35:16,212 INFO L85 PathProgramCache]: Analyzing trace with hash 263472268, now seen corresponding path program 1 times [2022-11-18 19:35:16,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:35:16,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748274163] [2022-11-18 19:35:16,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:35:16,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:35:16,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:16,333 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:35:16,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:35:16,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748274163] [2022-11-18 19:35:16,334 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748274163] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:35:16,334 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:35:16,334 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:35:16,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423699604] [2022-11-18 19:35:16,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:35:16,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:35:16,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:35:16,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:35:16,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:35:16,337 INFO L87 Difference]: Start difference. First operand 5742 states and 8338 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:35:16,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:35:16,658 INFO L93 Difference]: Finished difference Result 7462 states and 10706 transitions. [2022-11-18 19:35:16,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:35:16,658 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2022-11-18 19:35:16,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:35:16,663 INFO L225 Difference]: With dead ends: 7462 [2022-11-18 19:35:16,663 INFO L226 Difference]: Without dead ends: 4028 [2022-11-18 19:35:16,666 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:35:16,666 INFO L413 NwaCegarLoop]: 1562 mSDtfsCounter, 38 mSDsluCounter, 1507 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 3069 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:35:16,667 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 3069 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 19:35:16,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4028 states. [2022-11-18 19:35:16,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4028 to 4026. [2022-11-18 19:35:17,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4026 states, 4024 states have (on average 1.4776341948310139) internal successors, (5946), 4025 states have internal predecessors, (5946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:35:17,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4026 states to 4026 states and 5946 transitions. [2022-11-18 19:35:17,005 INFO L78 Accepts]: Start accepts. Automaton has 4026 states and 5946 transitions. Word has length 82 [2022-11-18 19:35:17,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:35:17,006 INFO L495 AbstractCegarLoop]: Abstraction has 4026 states and 5946 transitions. [2022-11-18 19:35:17,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:35:17,006 INFO L276 IsEmpty]: Start isEmpty. Operand 4026 states and 5946 transitions. [2022-11-18 19:35:17,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-11-18 19:35:17,008 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:35:17,008 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:35:17,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-18 19:35:17,009 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:35:17,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:35:17,009 INFO L85 PathProgramCache]: Analyzing trace with hash -1956730946, now seen corresponding path program 1 times [2022-11-18 19:35:17,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:35:17,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867158011] [2022-11-18 19:35:17,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:35:17,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:35:17,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:17,107 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:35:17,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:35:17,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867158011] [2022-11-18 19:35:17,108 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867158011] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:35:17,108 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:35:17,108 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:35:17,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626842175] [2022-11-18 19:35:17,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:35:17,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:35:17,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:35:17,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:35:17,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:35:17,110 INFO L87 Difference]: Start difference. First operand 4026 states and 5946 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:35:17,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:35:17,319 INFO L93 Difference]: Finished difference Result 4888 states and 7118 transitions. [2022-11-18 19:35:17,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:35:17,320 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2022-11-18 19:35:17,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:35:17,323 INFO L225 Difference]: With dead ends: 4888 [2022-11-18 19:35:17,324 INFO L226 Difference]: Without dead ends: 3170 [2022-11-18 19:35:17,326 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:35:17,326 INFO L413 NwaCegarLoop]: 1555 mSDtfsCounter, 35 mSDsluCounter, 1499 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 3054 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:35:17,327 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 3054 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 19:35:17,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3170 states. [2022-11-18 19:35:17,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3170 to 3168. [2022-11-18 19:35:17,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3168 states, 3166 states have (on average 1.5044219835754895) internal successors, (4763), 3167 states have internal predecessors, (4763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:35:17,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3168 states to 3168 states and 4763 transitions. [2022-11-18 19:35:17,532 INFO L78 Accepts]: Start accepts. Automaton has 3168 states and 4763 transitions. Word has length 84 [2022-11-18 19:35:17,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:35:17,532 INFO L495 AbstractCegarLoop]: Abstraction has 3168 states and 4763 transitions. [2022-11-18 19:35:17,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:35:17,532 INFO L276 IsEmpty]: Start isEmpty. Operand 3168 states and 4763 transitions. [2022-11-18 19:35:17,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-11-18 19:35:17,534 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:35:17,534 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:35:17,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-18 19:35:17,534 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:35:17,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:35:17,535 INFO L85 PathProgramCache]: Analyzing trace with hash 1389986160, now seen corresponding path program 1 times [2022-11-18 19:35:17,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:35:17,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992055670] [2022-11-18 19:35:17,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:35:17,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:35:17,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:18,412 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 11 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:35:18,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:35:18,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992055670] [2022-11-18 19:35:18,412 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992055670] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:35:18,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1563129547] [2022-11-18 19:35:18,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:35:18,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:35:18,413 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aea1237-3911-4150-a47c-7cc129c52f16/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:35:18,419 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aea1237-3911-4150-a47c-7cc129c52f16/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:35:18,439 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aea1237-3911-4150-a47c-7cc129c52f16/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 19:35:18,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:18,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 418 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-18 19:35:18,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:35:18,860 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 19:35:18,860 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:35:19,247 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 19:35:19,247 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1563129547] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:35:19,247 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:35:19,248 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 6, 4] total 19 [2022-11-18 19:35:19,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088730019] [2022-11-18 19:35:19,248 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:35:19,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-18 19:35:19,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:35:19,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-18 19:35:19,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2022-11-18 19:35:19,250 INFO L87 Difference]: Start difference. First operand 3168 states and 4763 transitions. Second operand has 19 states, 19 states have (on average 12.68421052631579) internal successors, (241), 19 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:35:24,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:35:24,159 INFO L93 Difference]: Finished difference Result 9561 states and 13188 transitions. [2022-11-18 19:35:24,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-11-18 19:35:24,160 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 12.68421052631579) internal successors, (241), 19 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2022-11-18 19:35:24,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:35:24,167 INFO L225 Difference]: With dead ends: 9561 [2022-11-18 19:35:24,167 INFO L226 Difference]: Without dead ends: 8701 [2022-11-18 19:35:24,170 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 995 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=659, Invalid=2881, Unknown=0, NotChecked=0, Total=3540 [2022-11-18 19:35:24,170 INFO L413 NwaCegarLoop]: 1516 mSDtfsCounter, 15341 mSDsluCounter, 6404 mSDsCounter, 0 mSdLazyCounter, 781 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15341 SdHoareTripleChecker+Valid, 7920 SdHoareTripleChecker+Invalid, 829 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 781 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-18 19:35:24,171 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15341 Valid, 7920 Invalid, 829 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 781 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-18 19:35:24,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8701 states. [2022-11-18 19:35:24,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8701 to 6504. [2022-11-18 19:35:24,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6504 states, 6502 states have (on average 1.3854198708089818) internal successors, (9008), 6503 states have internal predecessors, (9008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:35:24,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6504 states to 6504 states and 9008 transitions. [2022-11-18 19:35:24,951 INFO L78 Accepts]: Start accepts. Automaton has 6504 states and 9008 transitions. Word has length 86 [2022-11-18 19:35:24,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:35:24,952 INFO L495 AbstractCegarLoop]: Abstraction has 6504 states and 9008 transitions. [2022-11-18 19:35:24,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 12.68421052631579) internal successors, (241), 19 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:35:24,952 INFO L276 IsEmpty]: Start isEmpty. Operand 6504 states and 9008 transitions. [2022-11-18 19:35:24,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-11-18 19:35:24,953 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:35:24,953 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:35:24,959 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aea1237-3911-4150-a47c-7cc129c52f16/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 19:35:25,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aea1237-3911-4150-a47c-7cc129c52f16/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-11-18 19:35:25,159 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:35:25,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:35:25,159 INFO L85 PathProgramCache]: Analyzing trace with hash -1667542172, now seen corresponding path program 1 times [2022-11-18 19:35:25,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:35:25,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328879718] [2022-11-18 19:35:25,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:35:25,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:35:25,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:26,316 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:35:26,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:35:26,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328879718] [2022-11-18 19:35:26,317 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328879718] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:35:26,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [513630106] [2022-11-18 19:35:26,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:35:26,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:35:26,317 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aea1237-3911-4150-a47c-7cc129c52f16/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:35:26,320 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aea1237-3911-4150-a47c-7cc129c52f16/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:35:26,331 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aea1237-3911-4150-a47c-7cc129c52f16/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 19:35:26,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:26,461 INFO L263 TraceCheckSpWp]: Trace formula consists of 423 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-18 19:35:26,464 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:35:27,955 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:35:27,955 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:35:30,011 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:35:30,012 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [513630106] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:35:30,013 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:35:30,013 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 13] total 35 [2022-11-18 19:35:30,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946484948] [2022-11-18 19:35:30,013 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:35:30,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-11-18 19:35:30,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:35:30,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-11-18 19:35:30,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=1074, Unknown=0, NotChecked=0, Total=1190 [2022-11-18 19:35:30,016 INFO L87 Difference]: Start difference. First operand 6504 states and 9008 transitions. Second operand has 35 states, 35 states have (on average 6.485714285714286) internal successors, (227), 35 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:19,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:36:19,448 INFO L93 Difference]: Finished difference Result 72640 states and 93724 transitions. [2022-11-18 19:36:19,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 207 states. [2022-11-18 19:36:19,449 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 6.485714285714286) internal successors, (227), 35 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2022-11-18 19:36:19,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:36:19,528 INFO L225 Difference]: With dead ends: 72640 [2022-11-18 19:36:19,529 INFO L226 Difference]: Without dead ends: 68669 [2022-11-18 19:36:19,548 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 389 GetRequests, 151 SyntacticMatches, 1 SemanticMatches, 237 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23318 ImplicationChecksByTransitivity, 29.7s TimeCoverageRelationStatistics Valid=7220, Invalid=49662, Unknown=0, NotChecked=0, Total=56882 [2022-11-18 19:36:19,549 INFO L413 NwaCegarLoop]: 1636 mSDtfsCounter, 24929 mSDsluCounter, 17850 mSDsCounter, 0 mSdLazyCounter, 3528 mSolverCounterSat, 192 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24929 SdHoareTripleChecker+Valid, 19486 SdHoareTripleChecker+Invalid, 3720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 192 IncrementalHoareTripleChecker+Valid, 3528 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-11-18 19:36:19,549 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24929 Valid, 19486 Invalid, 3720 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [192 Valid, 3528 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-11-18 19:36:19,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68669 states. [2022-11-18 19:36:24,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68669 to 17653. [2022-11-18 19:36:24,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17653 states, 17651 states have (on average 1.3003229278794401) internal successors, (22952), 17652 states have internal predecessors, (22952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:24,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17653 states to 17653 states and 22952 transitions. [2022-11-18 19:36:24,274 INFO L78 Accepts]: Start accepts. Automaton has 17653 states and 22952 transitions. Word has length 87 [2022-11-18 19:36:24,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:36:24,275 INFO L495 AbstractCegarLoop]: Abstraction has 17653 states and 22952 transitions. [2022-11-18 19:36:24,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 6.485714285714286) internal successors, (227), 35 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:24,275 INFO L276 IsEmpty]: Start isEmpty. Operand 17653 states and 22952 transitions. [2022-11-18 19:36:24,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-11-18 19:36:24,276 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:36:24,277 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:36:24,287 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aea1237-3911-4150-a47c-7cc129c52f16/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-18 19:36:24,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aea1237-3911-4150-a47c-7cc129c52f16/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-11-18 19:36:24,482 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:36:24,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:36:24,483 INFO L85 PathProgramCache]: Analyzing trace with hash 1769142018, now seen corresponding path program 1 times [2022-11-18 19:36:24,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:36:24,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319188031] [2022-11-18 19:36:24,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:36:24,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:36:24,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:25,466 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:36:25,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:36:25,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319188031] [2022-11-18 19:36:25,467 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319188031] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:36:25,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [780431839] [2022-11-18 19:36:25,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:36:25,467 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:36:25,467 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aea1237-3911-4150-a47c-7cc129c52f16/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:36:25,468 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aea1237-3911-4150-a47c-7cc129c52f16/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:36:25,470 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aea1237-3911-4150-a47c-7cc129c52f16/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 19:36:25,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:25,597 INFO L263 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-18 19:36:25,600 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:36:26,520 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:36:26,520 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:36:28,335 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:36:28,336 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [780431839] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:36:28,336 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:36:28,336 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 32 [2022-11-18 19:36:28,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320571281] [2022-11-18 19:36:28,336 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:36:28,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-18 19:36:28,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:36:28,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-18 19:36:28,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=825, Unknown=0, NotChecked=0, Total=992 [2022-11-18 19:36:28,338 INFO L87 Difference]: Start difference. First operand 17653 states and 22952 transitions. Second operand has 32 states, 32 states have (on average 7.6875) internal successors, (246), 32 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:44,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:36:44,696 INFO L93 Difference]: Finished difference Result 56281 states and 70543 transitions. [2022-11-18 19:36:44,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-18 19:36:44,697 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 7.6875) internal successors, (246), 32 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2022-11-18 19:36:44,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:36:44,760 INFO L225 Difference]: With dead ends: 56281 [2022-11-18 19:36:44,760 INFO L226 Difference]: Without dead ends: 42513 [2022-11-18 19:36:44,770 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 654 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=640, Invalid=2222, Unknown=0, NotChecked=0, Total=2862 [2022-11-18 19:36:44,770 INFO L413 NwaCegarLoop]: 1524 mSDtfsCounter, 8420 mSDsluCounter, 8257 mSDsCounter, 0 mSdLazyCounter, 1062 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8420 SdHoareTripleChecker+Valid, 9781 SdHoareTripleChecker+Invalid, 1091 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1062 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-18 19:36:44,770 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8420 Valid, 9781 Invalid, 1091 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 1062 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-18 19:36:44,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42513 states. [2022-11-18 19:36:54,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42513 to 32343. [2022-11-18 19:36:54,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32343 states, 32341 states have (on average 1.2684518103954732) internal successors, (41023), 32342 states have internal predecessors, (41023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:54,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32343 states to 32343 states and 41023 transitions. [2022-11-18 19:36:54,756 INFO L78 Accepts]: Start accepts. Automaton has 32343 states and 41023 transitions. Word has length 88 [2022-11-18 19:36:54,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:36:54,757 INFO L495 AbstractCegarLoop]: Abstraction has 32343 states and 41023 transitions. [2022-11-18 19:36:54,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 7.6875) internal successors, (246), 32 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:54,757 INFO L276 IsEmpty]: Start isEmpty. Operand 32343 states and 41023 transitions. [2022-11-18 19:36:54,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-11-18 19:36:54,759 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:36:54,760 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:36:54,771 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aea1237-3911-4150-a47c-7cc129c52f16/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-18 19:36:54,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aea1237-3911-4150-a47c-7cc129c52f16/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-11-18 19:36:54,966 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:36:54,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:36:54,966 INFO L85 PathProgramCache]: Analyzing trace with hash -1728911506, now seen corresponding path program 1 times [2022-11-18 19:36:54,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:36:54,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859647517] [2022-11-18 19:36:54,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:36:54,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:36:55,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:55,422 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:36:55,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:36:55,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859647517] [2022-11-18 19:36:55,423 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859647517] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:36:55,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [98983838] [2022-11-18 19:36:55,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:36:55,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:36:55,424 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aea1237-3911-4150-a47c-7cc129c52f16/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:36:55,425 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aea1237-3911-4150-a47c-7cc129c52f16/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:36:55,447 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aea1237-3911-4150-a47c-7cc129c52f16/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 19:36:55,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:55,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-18 19:36:55,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:36:56,549 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:36:56,549 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:36:57,563 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:36:57,563 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [98983838] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:36:57,563 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:36:57,563 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2022-11-18 19:36:57,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792765607] [2022-11-18 19:36:57,564 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:36:57,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-18 19:36:57,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:36:57,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-18 19:36:57,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=521, Unknown=0, NotChecked=0, Total=600 [2022-11-18 19:36:57,565 INFO L87 Difference]: Start difference. First operand 32343 states and 41023 transitions. Second operand has 25 states, 25 states have (on average 9.44) internal successors, (236), 24 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:37:20,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:37:20,180 INFO L93 Difference]: Finished difference Result 70175 states and 88008 transitions. [2022-11-18 19:37:20,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-11-18 19:37:20,180 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 9.44) internal successors, (236), 24 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2022-11-18 19:37:20,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:37:20,243 INFO L225 Difference]: With dead ends: 70175 [2022-11-18 19:37:20,243 INFO L226 Difference]: Without dead ends: 50559 [2022-11-18 19:37:20,256 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 159 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 901 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=886, Invalid=3274, Unknown=0, NotChecked=0, Total=4160 [2022-11-18 19:37:20,257 INFO L413 NwaCegarLoop]: 1587 mSDtfsCounter, 25462 mSDsluCounter, 6958 mSDsCounter, 0 mSdLazyCounter, 1151 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25462 SdHoareTripleChecker+Valid, 8545 SdHoareTripleChecker+Invalid, 1185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:37:20,258 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25462 Valid, 8545 Invalid, 1185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 1151 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-18 19:37:20,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50559 states. [2022-11-18 19:37:31,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50559 to 30307. [2022-11-18 19:37:31,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30307 states, 30305 states have (on average 1.2573172743771655) internal successors, (38103), 30306 states have internal predecessors, (38103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:37:31,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30307 states to 30307 states and 38103 transitions. [2022-11-18 19:37:31,810 INFO L78 Accepts]: Start accepts. Automaton has 30307 states and 38103 transitions. Word has length 88 [2022-11-18 19:37:31,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:37:31,810 INFO L495 AbstractCegarLoop]: Abstraction has 30307 states and 38103 transitions. [2022-11-18 19:37:31,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 9.44) internal successors, (236), 24 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:37:31,810 INFO L276 IsEmpty]: Start isEmpty. Operand 30307 states and 38103 transitions. [2022-11-18 19:37:31,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-11-18 19:37:31,813 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:37:31,813 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:37:31,828 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aea1237-3911-4150-a47c-7cc129c52f16/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-18 19:37:32,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aea1237-3911-4150-a47c-7cc129c52f16/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-11-18 19:37:32,018 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:37:32,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:37:32,019 INFO L85 PathProgramCache]: Analyzing trace with hash -1760002960, now seen corresponding path program 1 times [2022-11-18 19:37:32,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:37:32,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941841594] [2022-11-18 19:37:32,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:37:32,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:37:32,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:37:32,599 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:37:32,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:37:32,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941841594] [2022-11-18 19:37:32,600 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941841594] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:37:32,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [301680168] [2022-11-18 19:37:32,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:37:32,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:37:32,601 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aea1237-3911-4150-a47c-7cc129c52f16/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:37:32,602 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aea1237-3911-4150-a47c-7cc129c52f16/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:37:32,623 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aea1237-3911-4150-a47c-7cc129c52f16/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-18 19:37:32,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:37:32,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 427 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-18 19:37:32,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:37:33,537 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:37:33,537 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:37:35,229 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:37:35,230 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [301680168] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:37:35,230 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:37:35,230 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 12] total 27 [2022-11-18 19:37:35,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396443281] [2022-11-18 19:37:35,231 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:37:35,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-11-18 19:37:35,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:37:35,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-11-18 19:37:35,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=574, Unknown=0, NotChecked=0, Total=702 [2022-11-18 19:37:35,233 INFO L87 Difference]: Start difference. First operand 30307 states and 38103 transitions. Second operand has 27 states, 27 states have (on average 8.481481481481481) internal successors, (229), 27 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)