./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/Problem05_label44+token_ring.01.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f913eba-e910-46f3-a90e-eb9a87058b80/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f913eba-e910-46f3-a90e-eb9a87058b80/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f913eba-e910-46f3-a90e-eb9a87058b80/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f913eba-e910-46f3-a90e-eb9a87058b80/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/Problem05_label44+token_ring.01.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f913eba-e910-46f3-a90e-eb9a87058b80/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f913eba-e910-46f3-a90e-eb9a87058b80/bin/uautomizer-tPACEb0tL8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e5dd58415aac7d1d5a1692f51a0046cae2819bd35dc6a9ac29c06647e84dab1f --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 12:07:34,438 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:07:34,441 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:07:34,467 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:07:34,468 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:07:34,469 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:07:34,471 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:07:34,473 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:07:34,475 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:07:34,476 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:07:34,477 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:07:34,478 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:07:34,479 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:07:34,480 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:07:34,482 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:07:34,483 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:07:34,484 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:07:34,486 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:07:34,488 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:07:34,490 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:07:34,492 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:07:34,494 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:07:34,495 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:07:34,496 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:07:34,501 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:07:34,501 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:07:34,502 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:07:34,503 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:07:34,503 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:07:34,505 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:07:34,505 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:07:34,506 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:07:34,507 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:07:34,508 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:07:34,509 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:07:34,510 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:07:34,511 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:07:34,511 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:07:34,511 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:07:34,512 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:07:34,513 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:07:34,514 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f913eba-e910-46f3-a90e-eb9a87058b80/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-16 12:07:34,541 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:07:34,541 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:07:34,542 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:07:34,542 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:07:34,543 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:07:34,543 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:07:34,544 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:07:34,544 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:07:34,544 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:07:34,545 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:07:34,545 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 12:07:34,545 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:07:34,545 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 12:07:34,546 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:07:34,546 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 12:07:34,546 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:07:34,546 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 12:07:34,547 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 12:07:34,547 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 12:07:34,547 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:07:34,547 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 12:07:34,547 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:07:34,548 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:07:34,548 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:07:34,548 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:07:34,548 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:07:34,549 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:07:34,549 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 12:07:34,549 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 12:07:34,549 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 12:07:34,550 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 12:07:34,550 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 12:07:34,550 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 12:07:34,550 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_0f913eba-e910-46f3-a90e-eb9a87058b80/bin/uautomizer-tPACEb0tL8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f913eba-e910-46f3-a90e-eb9a87058b80/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e5dd58415aac7d1d5a1692f51a0046cae2819bd35dc6a9ac29c06647e84dab1f [2022-11-16 12:07:34,844 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:07:34,874 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:07:34,878 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:07:34,881 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:07:34,882 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:07:34,884 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f913eba-e910-46f3-a90e-eb9a87058b80/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/combinations/Problem05_label44+token_ring.01.cil-1.c [2022-11-16 12:07:34,968 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f913eba-e910-46f3-a90e-eb9a87058b80/bin/uautomizer-tPACEb0tL8/data/15c331e9c/2618854a9e5d48778d9e5bd368b54bb0/FLAGba5a5c204 [2022-11-16 12:07:36,216 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:07:36,217 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f913eba-e910-46f3-a90e-eb9a87058b80/sv-benchmarks/c/combinations/Problem05_label44+token_ring.01.cil-1.c [2022-11-16 12:07:36,260 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f913eba-e910-46f3-a90e-eb9a87058b80/bin/uautomizer-tPACEb0tL8/data/15c331e9c/2618854a9e5d48778d9e5bd368b54bb0/FLAGba5a5c204 [2022-11-16 12:07:36,479 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f913eba-e910-46f3-a90e-eb9a87058b80/bin/uautomizer-tPACEb0tL8/data/15c331e9c/2618854a9e5d48778d9e5bd368b54bb0 [2022-11-16 12:07:36,482 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:07:36,487 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:07:36,488 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:07:36,488 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:07:36,492 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:07:36,493 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:07:36" (1/1) ... [2022-11-16 12:07:36,494 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28bdf81a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:07:36, skipping insertion in model container [2022-11-16 12:07:36,494 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:07:36" (1/1) ... [2022-11-16 12:07:36,503 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:07:36,753 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:07:39,360 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f913eba-e910-46f3-a90e-eb9a87058b80/sv-benchmarks/c/combinations/Problem05_label44+token_ring.01.cil-1.c[377340,377353] [2022-11-16 12:07:39,401 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f913eba-e910-46f3-a90e-eb9a87058b80/sv-benchmarks/c/combinations/Problem05_label44+token_ring.01.cil-1.c[383339,383352] [2022-11-16 12:07:39,581 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:07:39,593 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:07:41,085 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f913eba-e910-46f3-a90e-eb9a87058b80/sv-benchmarks/c/combinations/Problem05_label44+token_ring.01.cil-1.c[377340,377353] [2022-11-16 12:07:41,099 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f913eba-e910-46f3-a90e-eb9a87058b80/sv-benchmarks/c/combinations/Problem05_label44+token_ring.01.cil-1.c[383339,383352] [2022-11-16 12:07:41,128 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:07:41,202 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:07:41,203 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:07:41 WrapperNode [2022-11-16 12:07:41,203 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:07:41,205 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:07:41,205 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:07:41,205 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:07:41,214 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:07:41" (1/1) ... [2022-11-16 12:07:41,340 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:07:41" (1/1) ... [2022-11-16 12:07:41,907 INFO L138 Inliner]: procedures = 46, calls = 44, calls flagged for inlining = 24, calls inlined = 24, statements flattened = 12561 [2022-11-16 12:07:41,908 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:07:41,909 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:07:41,909 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:07:41,909 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:07:41,920 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:07:41" (1/1) ... [2022-11-16 12:07:41,921 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:07:41" (1/1) ... [2022-11-16 12:07:41,988 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:07:41" (1/1) ... [2022-11-16 12:07:41,988 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:07:41" (1/1) ... [2022-11-16 12:07:42,453 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:07:41" (1/1) ... [2022-11-16 12:07:42,557 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:07:41" (1/1) ... [2022-11-16 12:07:42,596 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:07:41" (1/1) ... [2022-11-16 12:07:42,620 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:07:41" (1/1) ... [2022-11-16 12:07:42,696 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:07:42,697 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:07:42,698 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:07:42,698 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:07:42,702 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:07:41" (1/1) ... [2022-11-16 12:07:42,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:07:42,736 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f913eba-e910-46f3-a90e-eb9a87058b80/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:07:42,789 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f913eba-e910-46f3-a90e-eb9a87058b80/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:07:42,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f913eba-e910-46f3-a90e-eb9a87058b80/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:07:42,939 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 12:07:42,939 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-11-16 12:07:42,939 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-11-16 12:07:42,939 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-11-16 12:07:42,939 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-11-16 12:07:42,940 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-11-16 12:07:42,940 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-11-16 12:07:42,940 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-11-16 12:07:42,940 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-11-16 12:07:42,940 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-11-16 12:07:42,940 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-11-16 12:07:42,940 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 12:07:42,941 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-11-16 12:07:42,941 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-11-16 12:07:42,941 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:07:42,941 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:07:43,127 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:07:43,136 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:07:53,129 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:07:53,150 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:07:53,150 INFO L300 CfgBuilder]: Removed 5 assume(true) statements. [2022-11-16 12:07:53,154 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:07:53 BoogieIcfgContainer [2022-11-16 12:07:53,155 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:07:53,157 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:07:53,157 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:07:53,161 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:07:53,161 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:07:36" (1/3) ... [2022-11-16 12:07:53,162 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a4fefe3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:07:53, skipping insertion in model container [2022-11-16 12:07:53,162 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:07:41" (2/3) ... [2022-11-16 12:07:53,163 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a4fefe3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:07:53, skipping insertion in model container [2022-11-16 12:07:53,163 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:07:53" (3/3) ... [2022-11-16 12:07:53,164 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label44+token_ring.01.cil-1.c [2022-11-16 12:07:53,183 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:07:53,184 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-16 12:07:53,275 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:07:53,283 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;@84ba9ed, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:07:53,283 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-16 12:07:53,299 INFO L276 IsEmpty]: Start isEmpty. Operand has 2290 states, 2266 states have (on average 1.8587819947043247) internal successors, (4212), 2269 states have internal predecessors, (4212), 15 states have call successors, (15), 6 states have call predecessors, (15), 6 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-11-16 12:07:53,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-11-16 12:07:53,313 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:07:53,314 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] [2022-11-16 12:07:53,315 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:07:53,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:07:53,321 INFO L85 PathProgramCache]: Analyzing trace with hash -36301034, now seen corresponding path program 1 times [2022-11-16 12:07:53,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:07:53,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148850315] [2022-11-16 12:07:53,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:07:53,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:07:53,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:53,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-16 12:07:53,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:53,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-16 12:07:53,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:53,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 12:07:53,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:53,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-16 12:07:53,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:53,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-16 12:07:53,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:53,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:07:53,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:07:53,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148850315] [2022-11-16 12:07:53,827 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148850315] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:07:53,827 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:07:53,828 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 12:07:53,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681096160] [2022-11-16 12:07:53,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:07:53,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:07:53,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:07:53,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:07:53,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:07:53,877 INFO L87 Difference]: Start difference. First operand has 2290 states, 2266 states have (on average 1.8587819947043247) internal successors, (4212), 2269 states have internal predecessors, (4212), 15 states have call successors, (15), 6 states have call predecessors, (15), 6 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 12:07:55,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:07:55,063 INFO L93 Difference]: Finished difference Result 4705 states and 8678 transitions. [2022-11-16 12:07:55,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 12:07:55,066 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 57 [2022-11-16 12:07:55,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:07:55,111 INFO L225 Difference]: With dead ends: 4705 [2022-11-16 12:07:55,111 INFO L226 Difference]: Without dead ends: 2354 [2022-11-16 12:07:55,124 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-11-16 12:07:55,131 INFO L413 NwaCegarLoop]: 4135 mSDtfsCounter, 4321 mSDsluCounter, 12342 mSDsCounter, 0 mSdLazyCounter, 462 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4329 SdHoareTripleChecker+Valid, 16477 SdHoareTripleChecker+Invalid, 526 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-16 12:07:55,135 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4329 Valid, 16477 Invalid, 526 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [64 Valid, 462 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-16 12:07:55,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2354 states. [2022-11-16 12:07:55,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2354 to 2313. [2022-11-16 12:07:55,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2313 states, 2273 states have (on average 1.8376594808622966) internal successors, (4177), 2276 states have internal predecessors, (4177), 25 states have call successors, (25), 12 states have call predecessors, (25), 13 states have return successors, (28), 25 states have call predecessors, (28), 25 states have call successors, (28) [2022-11-16 12:07:55,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2313 states to 2313 states and 4230 transitions. [2022-11-16 12:07:55,316 INFO L78 Accepts]: Start accepts. Automaton has 2313 states and 4230 transitions. Word has length 57 [2022-11-16 12:07:55,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:07:55,317 INFO L495 AbstractCegarLoop]: Abstraction has 2313 states and 4230 transitions. [2022-11-16 12:07:55,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 12:07:55,318 INFO L276 IsEmpty]: Start isEmpty. Operand 2313 states and 4230 transitions. [2022-11-16 12:07:55,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-11-16 12:07:55,333 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:07:55,333 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] [2022-11-16 12:07:55,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 12:07:55,334 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:07:55,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:07:55,336 INFO L85 PathProgramCache]: Analyzing trace with hash -948253030, now seen corresponding path program 1 times [2022-11-16 12:07:55,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:07:55,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201407169] [2022-11-16 12:07:55,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:07:55,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:07:55,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:55,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-16 12:07:55,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:55,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-16 12:07:55,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:55,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 12:07:55,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:55,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-16 12:07:55,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:55,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-16 12:07:55,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:55,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:07:55,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:07:55,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201407169] [2022-11-16 12:07:55,668 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201407169] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:07:55,669 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:07:55,669 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:07:55,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830263167] [2022-11-16 12:07:55,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:07:55,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:07:55,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:07:55,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:07:55,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:07:55,672 INFO L87 Difference]: Start difference. First operand 2313 states and 4230 transitions. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 12:07:56,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:07:56,873 INFO L93 Difference]: Finished difference Result 2645 states and 4704 transitions. [2022-11-16 12:07:56,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-16 12:07:56,875 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 57 [2022-11-16 12:07:56,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:07:56,887 INFO L225 Difference]: With dead ends: 2645 [2022-11-16 12:07:56,887 INFO L226 Difference]: Without dead ends: 2462 [2022-11-16 12:07:56,889 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-16 12:07:56,891 INFO L413 NwaCegarLoop]: 4114 mSDtfsCounter, 4243 mSDsluCounter, 16299 mSDsCounter, 0 mSdLazyCounter, 698 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4251 SdHoareTripleChecker+Valid, 20413 SdHoareTripleChecker+Invalid, 739 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 698 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-16 12:07:56,892 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4251 Valid, 20413 Invalid, 739 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [41 Valid, 698 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-16 12:07:56,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2462 states. [2022-11-16 12:07:56,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2462 to 2398. [2022-11-16 12:07:56,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2398 states, 2341 states have (on average 1.8248611704399829) internal successors, (4272), 2345 states have internal predecessors, (4272), 35 states have call successors, (35), 18 states have call predecessors, (35), 20 states have return successors, (40), 36 states have call predecessors, (40), 35 states have call successors, (40) [2022-11-16 12:07:56,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2398 states to 2398 states and 4347 transitions. [2022-11-16 12:07:56,969 INFO L78 Accepts]: Start accepts. Automaton has 2398 states and 4347 transitions. Word has length 57 [2022-11-16 12:07:56,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:07:56,969 INFO L495 AbstractCegarLoop]: Abstraction has 2398 states and 4347 transitions. [2022-11-16 12:07:56,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 12:07:56,970 INFO L276 IsEmpty]: Start isEmpty. Operand 2398 states and 4347 transitions. [2022-11-16 12:07:56,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-11-16 12:07:56,971 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:07:56,972 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] [2022-11-16 12:07:56,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 12:07:56,972 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:07:56,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:07:56,973 INFO L85 PathProgramCache]: Analyzing trace with hash 1297326424, now seen corresponding path program 1 times [2022-11-16 12:07:56,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:07:56,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219801319] [2022-11-16 12:07:56,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:07:56,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:07:56,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:57,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-16 12:07:57,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:57,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-16 12:07:57,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:57,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 12:07:57,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:57,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-16 12:07:57,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:57,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-16 12:07:57,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:57,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:07:57,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:07:57,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219801319] [2022-11-16 12:07:57,147 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219801319] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:07:57,147 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:07:57,147 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:07:57,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617223153] [2022-11-16 12:07:57,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:07:57,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:07:57,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:07:57,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:07:57,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:07:57,151 INFO L87 Difference]: Start difference. First operand 2398 states and 4347 transitions. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 12:07:58,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:07:58,252 INFO L93 Difference]: Finished difference Result 2981 states and 5171 transitions. [2022-11-16 12:07:58,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-16 12:07:58,253 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 57 [2022-11-16 12:07:58,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:07:58,267 INFO L225 Difference]: With dead ends: 2981 [2022-11-16 12:07:58,267 INFO L226 Difference]: Without dead ends: 2713 [2022-11-16 12:07:58,270 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-11-16 12:07:58,271 INFO L413 NwaCegarLoop]: 4110 mSDtfsCounter, 4298 mSDsluCounter, 16291 mSDsCounter, 0 mSdLazyCounter, 687 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4308 SdHoareTripleChecker+Valid, 20401 SdHoareTripleChecker+Invalid, 735 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 687 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-16 12:07:58,272 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4308 Valid, 20401 Invalid, 735 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [48 Valid, 687 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-16 12:07:58,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2713 states. [2022-11-16 12:07:58,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2713 to 2563. [2022-11-16 12:07:58,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2563 states, 2474 states have (on average 1.8023443815683104) internal successors, (4459), 2480 states have internal predecessors, (4459), 53 states have call successors, (53), 30 states have call predecessors, (53), 34 states have return successors, (66), 56 states have call predecessors, (66), 53 states have call successors, (66) [2022-11-16 12:07:58,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2563 states to 2563 states and 4578 transitions. [2022-11-16 12:07:58,391 INFO L78 Accepts]: Start accepts. Automaton has 2563 states and 4578 transitions. Word has length 57 [2022-11-16 12:07:58,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:07:58,392 INFO L495 AbstractCegarLoop]: Abstraction has 2563 states and 4578 transitions. [2022-11-16 12:07:58,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 12:07:58,392 INFO L276 IsEmpty]: Start isEmpty. Operand 2563 states and 4578 transitions. [2022-11-16 12:07:58,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-11-16 12:07:58,394 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:07:58,394 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] [2022-11-16 12:07:58,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 12:07:58,395 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:07:58,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:07:58,395 INFO L85 PathProgramCache]: Analyzing trace with hash 399933146, now seen corresponding path program 1 times [2022-11-16 12:07:58,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:07:58,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48357840] [2022-11-16 12:07:58,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:07:58,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:07:58,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:58,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-16 12:07:58,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:58,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-16 12:07:58,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:58,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 12:07:58,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:58,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-16 12:07:58,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:58,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-16 12:07:58,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:58,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:07:58,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:07:58,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48357840] [2022-11-16 12:07:58,573 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48357840] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:07:58,573 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:07:58,573 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:07:58,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334668120] [2022-11-16 12:07:58,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:07:58,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:07:58,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:07:58,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:07:58,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:07:58,575 INFO L87 Difference]: Start difference. First operand 2563 states and 4578 transitions. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 12:07:59,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:07:59,642 INFO L93 Difference]: Finished difference Result 3503 states and 5902 transitions. [2022-11-16 12:07:59,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-16 12:07:59,643 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 57 [2022-11-16 12:07:59,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:07:59,658 INFO L225 Difference]: With dead ends: 3503 [2022-11-16 12:07:59,658 INFO L226 Difference]: Without dead ends: 3070 [2022-11-16 12:07:59,661 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-11-16 12:07:59,676 INFO L413 NwaCegarLoop]: 4102 mSDtfsCounter, 4238 mSDsluCounter, 16273 mSDsCounter, 0 mSdLazyCounter, 733 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4245 SdHoareTripleChecker+Valid, 20375 SdHoareTripleChecker+Invalid, 784 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 733 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-16 12:07:59,678 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4245 Valid, 20375 Invalid, 784 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [51 Valid, 733 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-16 12:07:59,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3070 states. [2022-11-16 12:07:59,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3070 to 2862. [2022-11-16 12:07:59,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2862 states, 2715 states have (on average 1.7661141804788214) internal successors, (4795), 2725 states have internal predecessors, (4795), 85 states have call successors, (85), 52 states have call predecessors, (85), 60 states have return successors, (120), 92 states have call predecessors, (120), 85 states have call successors, (120) [2022-11-16 12:07:59,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2862 states to 2862 states and 5000 transitions. [2022-11-16 12:07:59,827 INFO L78 Accepts]: Start accepts. Automaton has 2862 states and 5000 transitions. Word has length 57 [2022-11-16 12:07:59,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:07:59,830 INFO L495 AbstractCegarLoop]: Abstraction has 2862 states and 5000 transitions. [2022-11-16 12:07:59,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 12:07:59,839 INFO L276 IsEmpty]: Start isEmpty. Operand 2862 states and 5000 transitions. [2022-11-16 12:07:59,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-11-16 12:07:59,843 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:07:59,843 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] [2022-11-16 12:07:59,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 12:07:59,844 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:07:59,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:07:59,849 INFO L85 PathProgramCache]: Analyzing trace with hash 648079640, now seen corresponding path program 1 times [2022-11-16 12:07:59,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:07:59,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443515250] [2022-11-16 12:07:59,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:07:59,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:07:59,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:59,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-16 12:07:59,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:59,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-16 12:07:59,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:59,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 12:07:59,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:00,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-16 12:08:00,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:00,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-16 12:08:00,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:00,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:08:00,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:08:00,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443515250] [2022-11-16 12:08:00,078 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443515250] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:08:00,079 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:08:00,079 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 12:08:00,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624288436] [2022-11-16 12:08:00,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:08:00,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:08:00,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:08:00,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:08:00,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:08:00,081 INFO L87 Difference]: Start difference. First operand 2862 states and 5000 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 12:08:00,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:08:00,977 INFO L93 Difference]: Finished difference Result 4199 states and 6894 transitions. [2022-11-16 12:08:00,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 12:08:00,978 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 57 [2022-11-16 12:08:00,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:08:00,994 INFO L225 Difference]: With dead ends: 4199 [2022-11-16 12:08:00,995 INFO L226 Difference]: Without dead ends: 3468 [2022-11-16 12:08:01,000 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-11-16 12:08:01,005 INFO L413 NwaCegarLoop]: 4130 mSDtfsCounter, 4356 mSDsluCounter, 12156 mSDsCounter, 0 mSdLazyCounter, 552 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4379 SdHoareTripleChecker+Valid, 16286 SdHoareTripleChecker+Invalid, 615 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 552 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-16 12:08:01,006 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4379 Valid, 16286 Invalid, 615 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [63 Valid, 552 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-16 12:08:01,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3468 states. [2022-11-16 12:08:01,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3468 to 3263. [2022-11-16 12:08:01,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3263 states, 3033 states have (on average 1.7213979558193209) internal successors, (5221), 3052 states have internal predecessors, (5221), 134 states have call successors, (134), 82 states have call predecessors, (134), 94 states have return successors, (179), 136 states have call predecessors, (179), 134 states have call successors, (179) [2022-11-16 12:08:01,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3263 states to 3263 states and 5534 transitions. [2022-11-16 12:08:01,232 INFO L78 Accepts]: Start accepts. Automaton has 3263 states and 5534 transitions. Word has length 57 [2022-11-16 12:08:01,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:08:01,233 INFO L495 AbstractCegarLoop]: Abstraction has 3263 states and 5534 transitions. [2022-11-16 12:08:01,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 12:08:01,233 INFO L276 IsEmpty]: Start isEmpty. Operand 3263 states and 5534 transitions. [2022-11-16 12:08:01,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-16 12:08:01,238 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:08:01,238 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:08:01,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 12:08:01,239 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:08:01,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:08:01,241 INFO L85 PathProgramCache]: Analyzing trace with hash 12281189, now seen corresponding path program 1 times [2022-11-16 12:08:01,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:08:01,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469800394] [2022-11-16 12:08:01,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:08:01,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:08:01,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:01,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-16 12:08:01,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:01,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-16 12:08:01,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:01,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 12:08:01,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:01,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-16 12:08:01,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:01,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-16 12:08:01,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:01,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-16 12:08:01,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:01,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-11-16 12:08:01,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:01,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-16 12:08:01,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:01,477 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-16 12:08:01,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:08:01,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469800394] [2022-11-16 12:08:01,478 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469800394] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:08:01,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [488108825] [2022-11-16 12:08:01,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:08:01,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:08:01,479 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f913eba-e910-46f3-a90e-eb9a87058b80/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:08:01,483 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f913eba-e910-46f3-a90e-eb9a87058b80/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:08:01,511 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f913eba-e910-46f3-a90e-eb9a87058b80/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 12:08:01,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:01,625 INFO L263 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-16 12:08:01,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:08:01,677 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-16 12:08:01,679 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:08:01,679 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [488108825] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:08:01,680 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:08:01,680 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-11-16 12:08:01,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865296281] [2022-11-16 12:08:01,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:08:01,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:08:01,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:08:01,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:08:01,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:08:01,682 INFO L87 Difference]: Start difference. First operand 3263 states and 5534 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-16 12:08:01,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:08:01,954 INFO L93 Difference]: Finished difference Result 5442 states and 8608 transitions. [2022-11-16 12:08:01,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:08:01,955 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 92 [2022-11-16 12:08:01,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:08:01,977 INFO L225 Difference]: With dead ends: 5442 [2022-11-16 12:08:01,977 INFO L226 Difference]: Without dead ends: 4311 [2022-11-16 12:08:01,983 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:08:01,986 INFO L413 NwaCegarLoop]: 4217 mSDtfsCounter, 114 mSDsluCounter, 4096 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 8313 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:08:01,986 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 8313 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:08:02,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4311 states. [2022-11-16 12:08:02,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4311 to 4311. [2022-11-16 12:08:02,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4311 states, 3872 states have (on average 1.6417871900826446) internal successors, (6357), 3904 states have internal predecessors, (6357), 253 states have call successors, (253), 160 states have call predecessors, (253), 184 states have return successors, (376), 262 states have call predecessors, (376), 253 states have call successors, (376) [2022-11-16 12:08:02,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4311 states to 4311 states and 6986 transitions. [2022-11-16 12:08:02,333 INFO L78 Accepts]: Start accepts. Automaton has 4311 states and 6986 transitions. Word has length 92 [2022-11-16 12:08:02,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:08:02,334 INFO L495 AbstractCegarLoop]: Abstraction has 4311 states and 6986 transitions. [2022-11-16 12:08:02,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-16 12:08:02,335 INFO L276 IsEmpty]: Start isEmpty. Operand 4311 states and 6986 transitions. [2022-11-16 12:08:02,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-11-16 12:08:02,343 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:08:02,344 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:08:02,356 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f913eba-e910-46f3-a90e-eb9a87058b80/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 12:08:02,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f913eba-e910-46f3-a90e-eb9a87058b80/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-16 12:08:02,551 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:08:02,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:08:02,552 INFO L85 PathProgramCache]: Analyzing trace with hash -788169551, now seen corresponding path program 1 times [2022-11-16 12:08:02,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:08:02,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719433973] [2022-11-16 12:08:02,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:08:02,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:08:02,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:02,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-16 12:08:02,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:02,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-16 12:08:02,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:02,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 12:08:02,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:02,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-16 12:08:02,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:02,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-16 12:08:02,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:02,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-16 12:08:02,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:02,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-11-16 12:08:02,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:02,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-11-16 12:08:02,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:02,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-11-16 12:08:02,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:02,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-11-16 12:08:02,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:02,761 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-11-16 12:08:02,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:08:02,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719433973] [2022-11-16 12:08:02,762 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719433973] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:08:02,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [953661529] [2022-11-16 12:08:02,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:08:02,762 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:08:02,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f913eba-e910-46f3-a90e-eb9a87058b80/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:08:02,764 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f913eba-e910-46f3-a90e-eb9a87058b80/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:08:02,807 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f913eba-e910-46f3-a90e-eb9a87058b80/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 12:08:02,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:02,910 INFO L263 TraceCheckSpWp]: Trace formula consists of 399 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-16 12:08:02,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:08:03,072 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-16 12:08:03,072 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:08:03,073 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [953661529] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:08:03,073 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:08:03,073 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2022-11-16 12:08:03,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304898165] [2022-11-16 12:08:03,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:08:03,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:08:03,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:08:03,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:08:03,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:08:03,075 INFO L87 Difference]: Start difference. First operand 4311 states and 6986 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 2 states have internal predecessors, (85), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-16 12:08:03,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:08:03,484 INFO L93 Difference]: Finished difference Result 8527 states and 12855 transitions. [2022-11-16 12:08:03,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:08:03,485 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 2 states have internal predecessors, (85), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 118 [2022-11-16 12:08:03,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:08:03,537 INFO L225 Difference]: With dead ends: 8527 [2022-11-16 12:08:03,538 INFO L226 Difference]: Without dead ends: 6351 [2022-11-16 12:08:03,546 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:08:03,547 INFO L413 NwaCegarLoop]: 4117 mSDtfsCounter, 4026 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4026 SdHoareTripleChecker+Valid, 4237 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:08:03,547 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4026 Valid, 4237 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:08:03,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6351 states. [2022-11-16 12:08:03,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6351 to 6293. [2022-11-16 12:08:03,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6293 states, 5460 states have (on average 1.5576923076923077) internal successors, (8505), 5521 states have internal predecessors, (8505), 473 states have call successors, (473), 310 states have call predecessors, (473), 358 states have return successors, (688), 477 states have call predecessors, (688), 473 states have call successors, (688) [2022-11-16 12:08:03,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6293 states to 6293 states and 9666 transitions. [2022-11-16 12:08:03,956 INFO L78 Accepts]: Start accepts. Automaton has 6293 states and 9666 transitions. Word has length 118 [2022-11-16 12:08:03,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:08:03,959 INFO L495 AbstractCegarLoop]: Abstraction has 6293 states and 9666 transitions. [2022-11-16 12:08:03,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 2 states have internal predecessors, (85), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-16 12:08:03,961 INFO L276 IsEmpty]: Start isEmpty. Operand 6293 states and 9666 transitions. [2022-11-16 12:08:03,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-11-16 12:08:03,972 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:08:03,972 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-16 12:08:03,984 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f913eba-e910-46f3-a90e-eb9a87058b80/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 12:08:04,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f913eba-e910-46f3-a90e-eb9a87058b80/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:08:04,179 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:08:04,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:08:04,180 INFO L85 PathProgramCache]: Analyzing trace with hash 1080279049, now seen corresponding path program 1 times [2022-11-16 12:08:04,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:08:04,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373512173] [2022-11-16 12:08:04,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:08:04,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:08:04,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:04,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-16 12:08:04,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:04,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-16 12:08:04,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:04,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 12:08:04,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:04,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-16 12:08:04,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:04,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-16 12:08:04,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:04,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-16 12:08:04,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:04,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-16 12:08:04,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:04,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-11-16 12:08:04,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:04,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-11-16 12:08:04,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:04,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-11-16 12:08:04,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:04,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-11-16 12:08:04,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:04,386 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2022-11-16 12:08:04,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:08:04,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373512173] [2022-11-16 12:08:04,387 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373512173] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:08:04,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2123613093] [2022-11-16 12:08:04,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:08:04,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:08:04,390 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f913eba-e910-46f3-a90e-eb9a87058b80/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:08:04,392 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f913eba-e910-46f3-a90e-eb9a87058b80/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:08:04,419 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f913eba-e910-46f3-a90e-eb9a87058b80/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 12:08:04,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:04,540 INFO L263 TraceCheckSpWp]: Trace formula consists of 436 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 12:08:04,544 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:08:04,607 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-16 12:08:04,608 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:08:04,608 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2123613093] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:08:04,608 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:08:04,608 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-11-16 12:08:04,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232938146] [2022-11-16 12:08:04,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:08:04,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:08:04,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:08:04,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:08:04,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:08:04,611 INFO L87 Difference]: Start difference. First operand 6293 states and 9666 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-16 12:08:04,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:08:04,972 INFO L93 Difference]: Finished difference Result 9515 states and 14095 transitions. [2022-11-16 12:08:04,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:08:04,973 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 134 [2022-11-16 12:08:04,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:08:05,004 INFO L225 Difference]: With dead ends: 9515 [2022-11-16 12:08:05,004 INFO L226 Difference]: Without dead ends: 6621 [2022-11-16 12:08:05,017 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:08:05,018 INFO L413 NwaCegarLoop]: 4120 mSDtfsCounter, 4059 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4059 SdHoareTripleChecker+Valid, 4248 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:08:05,018 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4059 Valid, 4248 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:08:05,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6621 states. [2022-11-16 12:08:05,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6621 to 6583. [2022-11-16 12:08:05,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6583 states, 5718 states have (on average 1.5318293109478838) internal successors, (8759), 5779 states have internal predecessors, (8759), 479 states have call successors, (479), 336 states have call predecessors, (479), 384 states have return successors, (720), 483 states have call predecessors, (720), 479 states have call successors, (720) [2022-11-16 12:08:05,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6583 states to 6583 states and 9958 transitions. [2022-11-16 12:08:05,529 INFO L78 Accepts]: Start accepts. Automaton has 6583 states and 9958 transitions. Word has length 134 [2022-11-16 12:08:05,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:08:05,529 INFO L495 AbstractCegarLoop]: Abstraction has 6583 states and 9958 transitions. [2022-11-16 12:08:05,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-16 12:08:05,530 INFO L276 IsEmpty]: Start isEmpty. Operand 6583 states and 9958 transitions. [2022-11-16 12:08:05,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-11-16 12:08:05,543 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:08:05,543 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-16 12:08:05,558 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f913eba-e910-46f3-a90e-eb9a87058b80/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-16 12:08:05,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f913eba-e910-46f3-a90e-eb9a87058b80/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-16 12:08:05,755 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:08:05,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:08:05,755 INFO L85 PathProgramCache]: Analyzing trace with hash 703612430, now seen corresponding path program 1 times [2022-11-16 12:08:05,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:08:05,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888648324] [2022-11-16 12:08:05,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:08:05,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:08:05,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:05,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-16 12:08:05,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:05,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-16 12:08:05,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:05,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 12:08:05,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:05,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-16 12:08:05,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:05,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-16 12:08:05,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:05,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-16 12:08:05,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:05,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-16 12:08:05,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:05,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-11-16 12:08:05,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:05,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-16 12:08:05,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:05,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-11-16 12:08:05,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:05,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-11-16 12:08:05,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:05,941 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-11-16 12:08:05,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:08:05,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888648324] [2022-11-16 12:08:05,942 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888648324] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:08:05,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1485252886] [2022-11-16 12:08:05,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:08:05,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:08:05,943 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f913eba-e910-46f3-a90e-eb9a87058b80/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:08:05,944 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f913eba-e910-46f3-a90e-eb9a87058b80/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:08:05,971 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f913eba-e910-46f3-a90e-eb9a87058b80/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 12:08:06,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:06,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 12:08:06,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:08:06,141 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-16 12:08:06,141 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:08:06,142 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1485252886] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:08:06,142 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:08:06,142 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-11-16 12:08:06,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918108657] [2022-11-16 12:08:06,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:08:06,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:08:06,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:08:06,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:08:06,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:08:06,144 INFO L87 Difference]: Start difference. First operand 6583 states and 9958 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-16 12:08:06,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:08:06,483 INFO L93 Difference]: Finished difference Result 8950 states and 13283 transitions. [2022-11-16 12:08:06,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:08:06,483 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 135 [2022-11-16 12:08:06,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:08:06,509 INFO L225 Difference]: With dead ends: 8950 [2022-11-16 12:08:06,509 INFO L226 Difference]: Without dead ends: 6617 [2022-11-16 12:08:06,518 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:08:06,519 INFO L413 NwaCegarLoop]: 4205 mSDtfsCounter, 99 mSDsluCounter, 4087 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 8292 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:08:06,519 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 8292 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:08:06,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6617 states. [2022-11-16 12:08:06,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6617 to 6559. [2022-11-16 12:08:06,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6559 states, 5694 states have (on average 1.5175623463294696) internal successors, (8641), 5755 states have internal predecessors, (8641), 479 states have call successors, (479), 336 states have call predecessors, (479), 384 states have return successors, (720), 483 states have call predecessors, (720), 479 states have call successors, (720) [2022-11-16 12:08:06,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6559 states to 6559 states and 9840 transitions. [2022-11-16 12:08:06,930 INFO L78 Accepts]: Start accepts. Automaton has 6559 states and 9840 transitions. Word has length 135 [2022-11-16 12:08:06,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:08:06,931 INFO L495 AbstractCegarLoop]: Abstraction has 6559 states and 9840 transitions. [2022-11-16 12:08:06,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-16 12:08:06,931 INFO L276 IsEmpty]: Start isEmpty. Operand 6559 states and 9840 transitions. [2022-11-16 12:08:06,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-11-16 12:08:06,943 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:08:06,943 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-16 12:08:06,956 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f913eba-e910-46f3-a90e-eb9a87058b80/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-16 12:08:07,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f913eba-e910-46f3-a90e-eb9a87058b80/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:08:07,163 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:08:07,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:08:07,163 INFO L85 PathProgramCache]: Analyzing trace with hash 1285829934, now seen corresponding path program 1 times [2022-11-16 12:08:07,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:08:07,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372579153] [2022-11-16 12:08:07,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:08:07,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:08:07,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:07,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-16 12:08:07,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:07,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-16 12:08:07,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:07,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 12:08:07,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:07,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-16 12:08:07,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:07,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-16 12:08:07,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:07,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-16 12:08:07,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:07,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-16 12:08:07,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:07,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-11-16 12:08:07,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:07,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-16 12:08:07,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:07,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-11-16 12:08:07,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:07,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-11-16 12:08:07,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:07,358 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-11-16 12:08:07,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:08:07,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372579153] [2022-11-16 12:08:07,359 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372579153] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:08:07,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1080984247] [2022-11-16 12:08:07,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:08:07,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:08:07,360 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f913eba-e910-46f3-a90e-eb9a87058b80/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:08:07,361 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f913eba-e910-46f3-a90e-eb9a87058b80/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:08:07,367 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f913eba-e910-46f3-a90e-eb9a87058b80/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-16 12:08:07,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:07,495 INFO L263 TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-16 12:08:07,498 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:08:07,543 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-16 12:08:07,544 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:08:07,544 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1080984247] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:08:07,544 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:08:07,544 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-11-16 12:08:07,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760906455] [2022-11-16 12:08:07,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:08:07,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:08:07,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:08:07,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:08:07,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:08:07,546 INFO L87 Difference]: Start difference. First operand 6559 states and 9840 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 3 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-16 12:08:07,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:08:07,887 INFO L93 Difference]: Finished difference Result 9831 states and 14294 transitions. [2022-11-16 12:08:07,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:08:07,888 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 3 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 135 [2022-11-16 12:08:07,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:08:07,910 INFO L225 Difference]: With dead ends: 9831 [2022-11-16 12:08:07,910 INFO L226 Difference]: Without dead ends: 5941 [2022-11-16 12:08:07,924 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:08:07,925 INFO L413 NwaCegarLoop]: 4100 mSDtfsCounter, 4077 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4077 SdHoareTripleChecker+Valid, 4124 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:08:07,926 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4077 Valid, 4124 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:08:07,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5941 states. [2022-11-16 12:08:08,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5941 to 5711. [2022-11-16 12:08:08,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5711 states, 5012 states have (on average 1.5157621707901037) internal successors, (7597), 5057 states have internal predecessors, (7597), 391 states have call successors, (391), 274 states have call predecessors, (391), 306 states have return successors, (510), 387 states have call predecessors, (510), 391 states have call successors, (510) [2022-11-16 12:08:08,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5711 states to 5711 states and 8498 transitions. [2022-11-16 12:08:08,252 INFO L78 Accepts]: Start accepts. Automaton has 5711 states and 8498 transitions. Word has length 135 [2022-11-16 12:08:08,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:08:08,253 INFO L495 AbstractCegarLoop]: Abstraction has 5711 states and 8498 transitions. [2022-11-16 12:08:08,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 3 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-16 12:08:08,253 INFO L276 IsEmpty]: Start isEmpty. Operand 5711 states and 8498 transitions. [2022-11-16 12:08:08,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-11-16 12:08:08,262 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:08:08,262 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:08:08,278 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f913eba-e910-46f3-a90e-eb9a87058b80/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-16 12:08:08,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f913eba-e910-46f3-a90e-eb9a87058b80/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-16 12:08:08,473 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:08:08,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:08:08,474 INFO L85 PathProgramCache]: Analyzing trace with hash -371269117, now seen corresponding path program 1 times [2022-11-16 12:08:08,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:08:08,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066732864] [2022-11-16 12:08:08,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:08:08,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:08:08,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:08,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-16 12:08:08,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:08,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-16 12:08:08,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:08,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 12:08:08,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:08,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-16 12:08:08,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:08,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-16 12:08:08,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:08,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-16 12:08:08,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:08,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-16 12:08:08,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:08,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-11-16 12:08:08,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:08,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-16 12:08:08,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:08,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-11-16 12:08:08,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:08,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-11-16 12:08:08,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:08,650 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-11-16 12:08:08,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:08:08,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066732864] [2022-11-16 12:08:08,651 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066732864] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:08:08,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1368575570] [2022-11-16 12:08:08,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:08:08,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:08:08,652 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f913eba-e910-46f3-a90e-eb9a87058b80/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:08:08,653 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f913eba-e910-46f3-a90e-eb9a87058b80/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:08:08,679 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f913eba-e910-46f3-a90e-eb9a87058b80/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-16 12:08:08,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:08,784 INFO L263 TraceCheckSpWp]: Trace formula consists of 445 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-16 12:08:08,787 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:08:08,924 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2022-11-16 12:08:08,924 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:08:08,925 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1368575570] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:08:08,925 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:08:08,925 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 10 [2022-11-16 12:08:08,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307936067] [2022-11-16 12:08:08,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:08:08,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:08:08,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:08:08,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:08:08,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:08:08,930 INFO L87 Difference]: Start difference. First operand 5711 states and 8498 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-16 12:08:09,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:08:09,359 INFO L93 Difference]: Finished difference Result 7117 states and 10335 transitions. [2022-11-16 12:08:09,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:08:09,360 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 136 [2022-11-16 12:08:09,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:08:09,376 INFO L225 Difference]: With dead ends: 7117 [2022-11-16 12:08:09,376 INFO L226 Difference]: Without dead ends: 4791 [2022-11-16 12:08:09,384 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-11-16 12:08:09,384 INFO L413 NwaCegarLoop]: 4047 mSDtfsCounter, 4094 mSDsluCounter, 8053 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4102 SdHoareTripleChecker+Valid, 12100 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:08:09,385 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4102 Valid, 12100 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:08:09,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4791 states. [2022-11-16 12:08:09,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4791 to 4779. [2022-11-16 12:08:09,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4779 states, 4262 states have (on average 1.544580009385265) internal successors, (6583), 4289 states have internal predecessors, (6583), 295 states have call successors, (295), 204 states have call predecessors, (295), 220 states have return successors, (354), 289 states have call predecessors, (354), 295 states have call successors, (354) [2022-11-16 12:08:09,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4779 states to 4779 states and 7232 transitions. [2022-11-16 12:08:09,810 INFO L78 Accepts]: Start accepts. Automaton has 4779 states and 7232 transitions. Word has length 136 [2022-11-16 12:08:09,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:08:09,811 INFO L495 AbstractCegarLoop]: Abstraction has 4779 states and 7232 transitions. [2022-11-16 12:08:09,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-16 12:08:09,811 INFO L276 IsEmpty]: Start isEmpty. Operand 4779 states and 7232 transitions. [2022-11-16 12:08:09,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-11-16 12:08:09,817 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:08:09,818 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:08:09,832 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f913eba-e910-46f3-a90e-eb9a87058b80/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-16 12:08:10,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f913eba-e910-46f3-a90e-eb9a87058b80/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-16 12:08:10,025 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:08:10,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:08:10,025 INFO L85 PathProgramCache]: Analyzing trace with hash -1678411515, now seen corresponding path program 1 times [2022-11-16 12:08:10,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:08:10,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121388683] [2022-11-16 12:08:10,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:08:10,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:08:10,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:10,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-16 12:08:10,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:10,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-16 12:08:10,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:10,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 12:08:10,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:10,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-16 12:08:10,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:10,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-16 12:08:10,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:10,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-16 12:08:10,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:10,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-16 12:08:10,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:10,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-11-16 12:08:10,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:10,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-16 12:08:10,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:10,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-11-16 12:08:10,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:10,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-11-16 12:08:10,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:10,209 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-11-16 12:08:10,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:08:10,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121388683] [2022-11-16 12:08:10,213 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121388683] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:08:10,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1687155870] [2022-11-16 12:08:10,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:08:10,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:08:10,214 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f913eba-e910-46f3-a90e-eb9a87058b80/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:08:10,215 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f913eba-e910-46f3-a90e-eb9a87058b80/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:08:10,235 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f913eba-e910-46f3-a90e-eb9a87058b80/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-16 12:08:10,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:10,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 442 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-16 12:08:10,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:08:10,481 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2022-11-16 12:08:10,481 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:08:10,482 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1687155870] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:08:10,482 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:08:10,482 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 10 [2022-11-16 12:08:10,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031951403] [2022-11-16 12:08:10,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:08:10,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:08:10,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:08:10,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:08:10,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:08:10,485 INFO L87 Difference]: Start difference. First operand 4779 states and 7232 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-16 12:08:11,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:08:11,144 INFO L93 Difference]: Finished difference Result 7083 states and 10147 transitions. [2022-11-16 12:08:11,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:08:11,145 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 136 [2022-11-16 12:08:11,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:08:11,161 INFO L225 Difference]: With dead ends: 7083 [2022-11-16 12:08:11,162 INFO L226 Difference]: Without dead ends: 4732 [2022-11-16 12:08:11,170 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-11-16 12:08:11,171 INFO L413 NwaCegarLoop]: 4046 mSDtfsCounter, 4116 mSDsluCounter, 8048 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4124 SdHoareTripleChecker+Valid, 12094 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:08:11,171 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4124 Valid, 12094 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 12:08:11,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4732 states. [2022-11-16 12:08:11,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4732 to 3773. [2022-11-16 12:08:11,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3773 states, 3468 states have (on average 1.6000576701268743) internal successors, (5549), 3483 states have internal predecessors, (5549), 173 states have call successors, (173), 122 states have call predecessors, (173), 130 states have return successors, (203), 169 states have call predecessors, (203), 173 states have call successors, (203) [2022-11-16 12:08:11,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3773 states to 3773 states and 5925 transitions. [2022-11-16 12:08:11,494 INFO L78 Accepts]: Start accepts. Automaton has 3773 states and 5925 transitions. Word has length 136 [2022-11-16 12:08:11,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:08:11,495 INFO L495 AbstractCegarLoop]: Abstraction has 3773 states and 5925 transitions. [2022-11-16 12:08:11,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-16 12:08:11,495 INFO L276 IsEmpty]: Start isEmpty. Operand 3773 states and 5925 transitions. [2022-11-16 12:08:11,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-11-16 12:08:11,501 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:08:11,501 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:08:11,508 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f913eba-e910-46f3-a90e-eb9a87058b80/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-16 12:08:11,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f913eba-e910-46f3-a90e-eb9a87058b80/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-16 12:08:11,707 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:08:11,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:08:11,708 INFO L85 PathProgramCache]: Analyzing trace with hash 219085251, now seen corresponding path program 1 times [2022-11-16 12:08:11,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:08:11,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067846559] [2022-11-16 12:08:11,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:08:11,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:08:11,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:11,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-16 12:08:11,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:11,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-16 12:08:11,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:11,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 12:08:11,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:11,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-16 12:08:11,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:11,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-16 12:08:11,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:11,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-16 12:08:11,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:11,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-16 12:08:11,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:11,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-11-16 12:08:11,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:11,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-16 12:08:11,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:11,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-11-16 12:08:11,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:11,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-11-16 12:08:11,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:11,922 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-11-16 12:08:11,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:08:11,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067846559] [2022-11-16 12:08:11,923 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067846559] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:08:11,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [252666558] [2022-11-16 12:08:11,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:08:11,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:08:11,924 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f913eba-e910-46f3-a90e-eb9a87058b80/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:08:11,925 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f913eba-e910-46f3-a90e-eb9a87058b80/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:08:11,951 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f913eba-e910-46f3-a90e-eb9a87058b80/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-16 12:08:12,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:12,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 439 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 12:08:12,079 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:08:12,129 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2022-11-16 12:08:12,129 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:08:12,129 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [252666558] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:08:12,130 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:08:12,130 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 7 [2022-11-16 12:08:12,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589969726] [2022-11-16 12:08:12,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:08:12,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:08:12,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:08:12,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:08:12,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:08:12,132 INFO L87 Difference]: Start difference. First operand 3773 states and 5925 transitions. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-16 12:08:12,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:08:12,502 INFO L93 Difference]: Finished difference Result 4900 states and 7289 transitions. [2022-11-16 12:08:12,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:08:12,503 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 136 [2022-11-16 12:08:12,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:08:12,512 INFO L225 Difference]: With dead ends: 4900 [2022-11-16 12:08:12,513 INFO L226 Difference]: Without dead ends: 3258 [2022-11-16 12:08:12,518 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 156 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:08:12,519 INFO L413 NwaCegarLoop]: 4090 mSDtfsCounter, 48 mSDsluCounter, 12279 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 16369 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:08:12,519 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 16369 Invalid, 14 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:08:12,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3258 states. [2022-11-16 12:08:12,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3258 to 3222. [2022-11-16 12:08:12,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3222 states, 3024 states have (on average 1.6537698412698412) internal successors, (5001), 3035 states have internal predecessors, (5001), 110 states have call successors, (110), 79 states have call predecessors, (110), 86 states have return successors, (121), 108 states have call predecessors, (121), 110 states have call successors, (121) [2022-11-16 12:08:12,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3222 states to 3222 states and 5232 transitions. [2022-11-16 12:08:12,717 INFO L78 Accepts]: Start accepts. Automaton has 3222 states and 5232 transitions. Word has length 136 [2022-11-16 12:08:12,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:08:12,717 INFO L495 AbstractCegarLoop]: Abstraction has 3222 states and 5232 transitions. [2022-11-16 12:08:12,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-16 12:08:12,718 INFO L276 IsEmpty]: Start isEmpty. Operand 3222 states and 5232 transitions. [2022-11-16 12:08:12,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-11-16 12:08:12,720 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:08:12,721 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:08:12,733 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f913eba-e910-46f3-a90e-eb9a87058b80/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-16 12:08:12,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f913eba-e910-46f3-a90e-eb9a87058b80/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-16 12:08:12,928 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:08:12,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:08:12,928 INFO L85 PathProgramCache]: Analyzing trace with hash 731116351, now seen corresponding path program 1 times [2022-11-16 12:08:12,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:08:12,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894957983] [2022-11-16 12:08:12,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:08:12,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:08:12,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:12,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-16 12:08:12,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:12,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-16 12:08:12,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:13,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 12:08:13,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:13,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-16 12:08:13,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:13,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-16 12:08:13,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:13,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-16 12:08:13,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:13,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-16 12:08:13,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:13,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-11-16 12:08:13,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:13,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-16 12:08:13,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:13,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-11-16 12:08:13,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:13,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-11-16 12:08:13,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:13,112 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-11-16 12:08:13,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:08:13,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894957983] [2022-11-16 12:08:13,113 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894957983] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:08:13,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1249764211] [2022-11-16 12:08:13,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:08:13,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:08:13,113 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f913eba-e910-46f3-a90e-eb9a87058b80/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:08:13,114 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f913eba-e910-46f3-a90e-eb9a87058b80/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:08:13,118 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f913eba-e910-46f3-a90e-eb9a87058b80/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-16 12:08:13,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:13,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 12:08:13,231 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:08:13,261 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-16 12:08:13,261 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:08:13,261 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1249764211] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:08:13,262 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:08:13,262 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 7 [2022-11-16 12:08:13,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406551301] [2022-11-16 12:08:13,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:08:13,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:08:13,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:08:13,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:08:13,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:08:13,264 INFO L87 Difference]: Start difference. First operand 3222 states and 5232 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-16 12:08:13,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:08:13,505 INFO L93 Difference]: Finished difference Result 4341 states and 6571 transitions. [2022-11-16 12:08:13,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:08:13,506 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 136 [2022-11-16 12:08:13,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:08:13,515 INFO L225 Difference]: With dead ends: 4341 [2022-11-16 12:08:13,515 INFO L226 Difference]: Without dead ends: 3250 [2022-11-16 12:08:13,518 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 156 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:08:13,519 INFO L413 NwaCegarLoop]: 4089 mSDtfsCounter, 10 mSDsluCounter, 12266 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 16355 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:08:13,520 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 16355 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:08:13,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3250 states. [2022-11-16 12:08:13,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3250 to 3234. [2022-11-16 12:08:13,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3234 states, 3036 states have (on average 1.6442687747035574) internal successors, (4992), 3047 states have internal predecessors, (4992), 110 states have call successors, (110), 79 states have call predecessors, (110), 86 states have return successors, (121), 108 states have call predecessors, (121), 110 states have call successors, (121) [2022-11-16 12:08:13,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3234 states to 3234 states and 5223 transitions. [2022-11-16 12:08:13,705 INFO L78 Accepts]: Start accepts. Automaton has 3234 states and 5223 transitions. Word has length 136 [2022-11-16 12:08:13,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:08:13,706 INFO L495 AbstractCegarLoop]: Abstraction has 3234 states and 5223 transitions. [2022-11-16 12:08:13,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-16 12:08:13,706 INFO L276 IsEmpty]: Start isEmpty. Operand 3234 states and 5223 transitions. [2022-11-16 12:08:13,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-11-16 12:08:13,710 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:08:13,710 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:08:13,723 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f913eba-e910-46f3-a90e-eb9a87058b80/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-16 12:08:13,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f913eba-e910-46f3-a90e-eb9a87058b80/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-16 12:08:13,916 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:08:13,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:08:13,917 INFO L85 PathProgramCache]: Analyzing trace with hash -26178757, now seen corresponding path program 1 times [2022-11-16 12:08:13,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:08:13,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040766064] [2022-11-16 12:08:13,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:08:13,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:08:13,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:14,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-16 12:08:14,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:14,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-16 12:08:14,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:14,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 12:08:14,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:14,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-16 12:08:14,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:14,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-16 12:08:14,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:14,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-16 12:08:14,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:14,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-16 12:08:14,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:14,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-11-16 12:08:14,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:14,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-16 12:08:14,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:14,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-11-16 12:08:14,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:14,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-11-16 12:08:14,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:14,135 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2022-11-16 12:08:14,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:08:14,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040766064] [2022-11-16 12:08:14,137 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040766064] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:08:14,137 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:08:14,137 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 12:08:14,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694041372] [2022-11-16 12:08:14,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:08:14,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:08:14,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:08:14,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:08:14,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:08:14,140 INFO L87 Difference]: Start difference. First operand 3234 states and 5223 transitions. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 4 states have internal predecessors, (81), 4 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) [2022-11-16 12:08:15,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:08:15,093 INFO L93 Difference]: Finished difference Result 4191 states and 6295 transitions. [2022-11-16 12:08:15,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-16 12:08:15,093 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 4 states have internal predecessors, (81), 4 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) Word has length 136 [2022-11-16 12:08:15,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:08:15,104 INFO L225 Difference]: With dead ends: 4191 [2022-11-16 12:08:15,104 INFO L226 Difference]: Without dead ends: 4189 [2022-11-16 12:08:15,108 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2022-11-16 12:08:15,109 INFO L413 NwaCegarLoop]: 4113 mSDtfsCounter, 4438 mSDsluCounter, 12146 mSDsCounter, 0 mSdLazyCounter, 385 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4461 SdHoareTripleChecker+Valid, 16259 SdHoareTripleChecker+Invalid, 462 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 12:08:15,110 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4461 Valid, 16259 Invalid, 462 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [77 Valid, 385 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-16 12:08:15,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4189 states. [2022-11-16 12:08:15,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4189 to 3610. [2022-11-16 12:08:15,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3610 states, 3346 states have (on average 1.5971309025702332) internal successors, (5344), 3361 states have internal predecessors, (5344), 144 states have call successors, (144), 103 states have call predecessors, (144), 118 states have return successors, (163), 146 states have call predecessors, (163), 144 states have call successors, (163) [2022-11-16 12:08:15,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3610 states to 3610 states and 5651 transitions. [2022-11-16 12:08:15,356 INFO L78 Accepts]: Start accepts. Automaton has 3610 states and 5651 transitions. Word has length 136 [2022-11-16 12:08:15,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:08:15,356 INFO L495 AbstractCegarLoop]: Abstraction has 3610 states and 5651 transitions. [2022-11-16 12:08:15,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 4 states have internal predecessors, (81), 4 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) [2022-11-16 12:08:15,357 INFO L276 IsEmpty]: Start isEmpty. Operand 3610 states and 5651 transitions. [2022-11-16 12:08:15,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-11-16 12:08:15,361 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:08:15,361 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:08:15,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-16 12:08:15,362 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:08:15,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:08:15,362 INFO L85 PathProgramCache]: Analyzing trace with hash -970573154, now seen corresponding path program 2 times [2022-11-16 12:08:15,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:08:15,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217274836] [2022-11-16 12:08:15,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:08:15,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:08:15,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:15,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-16 12:08:15,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:15,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-16 12:08:15,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:15,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 12:08:15,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:15,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-16 12:08:15,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:15,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-16 12:08:15,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:15,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-16 12:08:15,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:15,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-16 12:08:15,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:15,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-11-16 12:08:15,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:15,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-16 12:08:15,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:15,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-11-16 12:08:15,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:15,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-11-16 12:08:15,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:15,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-11-16 12:08:15,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:15,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-11-16 12:08:15,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:15,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-11-16 12:08:15,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:15,552 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-11-16 12:08:15,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:08:15,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217274836] [2022-11-16 12:08:15,552 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217274836] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:08:15,553 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:08:15,553 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 12:08:15,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572572224] [2022-11-16 12:08:15,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:08:15,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:08:15,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:08:15,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:08:15,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:08:15,555 INFO L87 Difference]: Start difference. First operand 3610 states and 5651 transitions. Second operand has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 4 states have internal predecessors, (92), 5 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (11), 4 states have call predecessors, (11), 5 states have call successors, (11) [2022-11-16 12:08:16,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:08:16,566 INFO L93 Difference]: Finished difference Result 5333 states and 7624 transitions. [2022-11-16 12:08:16,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-16 12:08:16,566 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 4 states have internal predecessors, (92), 5 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (11), 4 states have call predecessors, (11), 5 states have call successors, (11) Word has length 175 [2022-11-16 12:08:16,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:08:16,572 INFO L225 Difference]: With dead ends: 5333 [2022-11-16 12:08:16,572 INFO L226 Difference]: Without dead ends: 2123 [2022-11-16 12:08:16,579 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2022-11-16 12:08:16,580 INFO L413 NwaCegarLoop]: 4074 mSDtfsCounter, 4545 mSDsluCounter, 12130 mSDsCounter, 0 mSdLazyCounter, 426 mSolverCounterSat, 159 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4560 SdHoareTripleChecker+Valid, 16204 SdHoareTripleChecker+Invalid, 585 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 159 IncrementalHoareTripleChecker+Valid, 426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-16 12:08:16,580 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4560 Valid, 16204 Invalid, 585 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [159 Valid, 426 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-16 12:08:16,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2123 states. [2022-11-16 12:08:16,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2123 to 2123. [2022-11-16 12:08:16,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2123 states, 2122 states have (on average 1.8656927426955703) internal successors, (3959), 2122 states have internal predecessors, (3959), 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) [2022-11-16 12:08:16,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2123 states to 2123 states and 3959 transitions. [2022-11-16 12:08:16,622 INFO L78 Accepts]: Start accepts. Automaton has 2123 states and 3959 transitions. Word has length 175 [2022-11-16 12:08:16,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:08:16,622 INFO L495 AbstractCegarLoop]: Abstraction has 2123 states and 3959 transitions. [2022-11-16 12:08:16,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 4 states have internal predecessors, (92), 5 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (11), 4 states have call predecessors, (11), 5 states have call successors, (11) [2022-11-16 12:08:16,623 INFO L276 IsEmpty]: Start isEmpty. Operand 2123 states and 3959 transitions. [2022-11-16 12:08:16,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1655 [2022-11-16 12:08:16,731 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:08:16,732 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:08:16,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-16 12:08:16,733 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:08:16,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:08:16,734 INFO L85 PathProgramCache]: Analyzing trace with hash 829492429, now seen corresponding path program 1 times [2022-11-16 12:08:16,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:08:16,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873712164] [2022-11-16 12:08:16,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:08:16,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:08:17,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:19,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:08:19,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:08:19,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873712164] [2022-11-16 12:08:19,775 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873712164] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:08:19,775 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:08:19,776 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:08:19,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457556074] [2022-11-16 12:08:19,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:08:19,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:08:19,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:08:19,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:08:19,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:08:19,779 INFO L87 Difference]: Start difference. First operand 2123 states and 3959 transitions. Second operand has 3 states, 3 states have (on average 551.3333333333334) internal successors, (1654), 2 states have internal predecessors, (1654), 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) [2022-11-16 12:08:28,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:08:28,135 INFO L93 Difference]: Finished difference Result 6077 states and 11442 transitions. [2022-11-16 12:08:28,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:08:28,136 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 551.3333333333334) internal successors, (1654), 2 states have internal predecessors, (1654), 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 1654 [2022-11-16 12:08:28,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:08:28,155 INFO L225 Difference]: With dead ends: 6077 [2022-11-16 12:08:28,155 INFO L226 Difference]: Without dead ends: 3957 [2022-11-16 12:08:28,159 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:08:28,160 INFO L413 NwaCegarLoop]: 738 mSDtfsCounter, 517 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 5893 mSolverCounterSat, 1830 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 517 SdHoareTripleChecker+Valid, 826 SdHoareTripleChecker+Invalid, 7723 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1830 IncrementalHoareTripleChecker+Valid, 5893 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:08:28,160 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [517 Valid, 826 Invalid, 7723 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1830 Valid, 5893 Invalid, 0 Unknown, 0 Unchecked, 8.2s Time] [2022-11-16 12:08:28,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3957 states. [2022-11-16 12:08:28,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3957 to 3894. [2022-11-16 12:08:28,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3894 states, 3893 states have (on average 1.8659131774980735) internal successors, (7264), 3893 states have internal predecessors, (7264), 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) [2022-11-16 12:08:28,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3894 states to 3894 states and 7264 transitions. [2022-11-16 12:08:28,237 INFO L78 Accepts]: Start accepts. Automaton has 3894 states and 7264 transitions. Word has length 1654 [2022-11-16 12:08:28,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:08:28,240 INFO L495 AbstractCegarLoop]: Abstraction has 3894 states and 7264 transitions. [2022-11-16 12:08:28,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 551.3333333333334) internal successors, (1654), 2 states have internal predecessors, (1654), 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) [2022-11-16 12:08:28,241 INFO L276 IsEmpty]: Start isEmpty. Operand 3894 states and 7264 transitions. [2022-11-16 12:08:28,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1661 [2022-11-16 12:08:28,346 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:08:28,347 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:08:28,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-16 12:08:28,347 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:08:28,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:08:28,349 INFO L85 PathProgramCache]: Analyzing trace with hash 2076117814, now seen corresponding path program 1 times [2022-11-16 12:08:28,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:08:28,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536696701] [2022-11-16 12:08:28,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:08:28,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:08:28,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:30,276 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:08:30,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:08:30,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536696701] [2022-11-16 12:08:30,277 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536696701] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:08:30,277 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:08:30,277 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:08:30,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964792491] [2022-11-16 12:08:30,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:08:30,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:08:30,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:08:30,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:08:30,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:08:30,281 INFO L87 Difference]: Start difference. First operand 3894 states and 7264 transitions. Second operand has 3 states, 3 states have (on average 553.3333333333334) internal successors, (1660), 2 states have internal predecessors, (1660), 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) [2022-11-16 12:08:38,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:08:38,579 INFO L93 Difference]: Finished difference Result 9618 states and 17979 transitions. [2022-11-16 12:08:38,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:08:38,580 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 553.3333333333334) internal successors, (1660), 2 states have internal predecessors, (1660), 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 1660 [2022-11-16 12:08:38,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:08:38,595 INFO L225 Difference]: With dead ends: 9618 [2022-11-16 12:08:38,595 INFO L226 Difference]: Without dead ends: 5727 [2022-11-16 12:08:38,601 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:08:38,602 INFO L413 NwaCegarLoop]: 1353 mSDtfsCounter, 1998 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 5245 mSolverCounterSat, 2286 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1998 SdHoareTripleChecker+Valid, 1574 SdHoareTripleChecker+Invalid, 7531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2286 IncrementalHoareTripleChecker+Valid, 5245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:08:38,602 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1998 Valid, 1574 Invalid, 7531 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2286 Valid, 5245 Invalid, 0 Unknown, 0 Unchecked, 8.1s Time] [2022-11-16 12:08:38,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5727 states. [2022-11-16 12:08:38,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5727 to 5644. [2022-11-16 12:08:38,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5644 states, 5643 states have (on average 1.6266170476696793) internal successors, (9179), 5643 states have internal predecessors, (9179), 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) [2022-11-16 12:08:38,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5644 states to 5644 states and 9179 transitions. [2022-11-16 12:08:38,701 INFO L78 Accepts]: Start accepts. Automaton has 5644 states and 9179 transitions. Word has length 1660 [2022-11-16 12:08:38,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:08:38,702 INFO L495 AbstractCegarLoop]: Abstraction has 5644 states and 9179 transitions. [2022-11-16 12:08:38,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 553.3333333333334) internal successors, (1660), 2 states have internal predecessors, (1660), 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) [2022-11-16 12:08:38,703 INFO L276 IsEmpty]: Start isEmpty. Operand 5644 states and 9179 transitions. [2022-11-16 12:08:38,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1662 [2022-11-16 12:08:38,734 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:08:38,735 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:08:38,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-16 12:08:38,736 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:08:38,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:08:38,737 INFO L85 PathProgramCache]: Analyzing trace with hash 999087907, now seen corresponding path program 1 times [2022-11-16 12:08:38,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:08:38,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959650246] [2022-11-16 12:08:38,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:08:38,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:08:39,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:43,842 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:08:43,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:08:43,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959650246] [2022-11-16 12:08:43,842 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959650246] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:08:43,843 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:08:43,843 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:08:43,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679005943] [2022-11-16 12:08:43,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:08:43,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:08:43,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:08:43,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:08:43,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:08:43,850 INFO L87 Difference]: Start difference. First operand 5644 states and 9179 transitions. Second operand has 4 states, 4 states have (on average 415.25) internal successors, (1661), 3 states have internal predecessors, (1661), 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) [2022-11-16 12:08:57,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:08:57,849 INFO L93 Difference]: Finished difference Result 18023 states and 29367 transitions. [2022-11-16 12:08:57,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:08:57,850 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 415.25) internal successors, (1661), 3 states have internal predecessors, (1661), 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 1661 [2022-11-16 12:08:57,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:08:57,876 INFO L225 Difference]: With dead ends: 18023 [2022-11-16 12:08:57,877 INFO L226 Difference]: Without dead ends: 10730 [2022-11-16 12:08:57,885 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:08:57,886 INFO L413 NwaCegarLoop]: 1044 mSDtfsCounter, 3047 mSDsluCounter, 271 mSDsCounter, 0 mSdLazyCounter, 9251 mSolverCounterSat, 3900 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3047 SdHoareTripleChecker+Valid, 1315 SdHoareTripleChecker+Invalid, 13151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3900 IncrementalHoareTripleChecker+Valid, 9251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.7s IncrementalHoareTripleChecker+Time [2022-11-16 12:08:57,887 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3047 Valid, 1315 Invalid, 13151 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3900 Valid, 9251 Invalid, 0 Unknown, 0 Unchecked, 13.7s Time] [2022-11-16 12:08:57,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10730 states. [2022-11-16 12:08:58,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10730 to 10730. [2022-11-16 12:08:58,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10730 states, 10729 states have (on average 1.3039425855158915) internal successors, (13990), 10729 states have internal predecessors, (13990), 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) [2022-11-16 12:08:58,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10730 states to 10730 states and 13990 transitions. [2022-11-16 12:08:58,059 INFO L78 Accepts]: Start accepts. Automaton has 10730 states and 13990 transitions. Word has length 1661 [2022-11-16 12:08:58,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:08:58,059 INFO L495 AbstractCegarLoop]: Abstraction has 10730 states and 13990 transitions. [2022-11-16 12:08:58,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 415.25) internal successors, (1661), 3 states have internal predecessors, (1661), 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) [2022-11-16 12:08:58,060 INFO L276 IsEmpty]: Start isEmpty. Operand 10730 states and 13990 transitions. [2022-11-16 12:08:58,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1673 [2022-11-16 12:08:58,100 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:08:58,102 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:08:58,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-16 12:08:58,102 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:08:58,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:08:58,103 INFO L85 PathProgramCache]: Analyzing trace with hash 2010037851, now seen corresponding path program 1 times [2022-11-16 12:08:58,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:08:58,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234452215] [2022-11-16 12:08:58,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:08:58,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:08:58,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:09:00,420 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:09:00,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:09:00,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234452215] [2022-11-16 12:09:00,421 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234452215] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:09:00,421 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:09:00,421 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:09:00,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667832632] [2022-11-16 12:09:00,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:09:00,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:09:00,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:09:00,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:09:00,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:09:00,425 INFO L87 Difference]: Start difference. First operand 10730 states and 13990 transitions. Second operand has 3 states, 3 states have (on average 557.3333333333334) internal successors, (1672), 3 states have internal predecessors, (1672), 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) [2022-11-16 12:09:07,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:09:07,701 INFO L93 Difference]: Finished difference Result 31696 states and 41305 transitions. [2022-11-16 12:09:07,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:09:07,703 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 557.3333333333334) internal successors, (1672), 3 states have internal predecessors, (1672), 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 1672 [2022-11-16 12:09:07,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:09:07,739 INFO L225 Difference]: With dead ends: 31696 [2022-11-16 12:09:07,739 INFO L226 Difference]: Without dead ends: 20969 [2022-11-16 12:09:07,754 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 [2022-11-16 12:09:07,754 INFO L413 NwaCegarLoop]: 3093 mSDtfsCounter, 344 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 4531 mSolverCounterSat, 1137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 344 SdHoareTripleChecker+Valid, 3332 SdHoareTripleChecker+Invalid, 5668 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1137 IncrementalHoareTripleChecker+Valid, 4531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:09:07,755 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [344 Valid, 3332 Invalid, 5668 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1137 Valid, 4531 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2022-11-16 12:09:07,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20969 states. [2022-11-16 12:09:08,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20969 to 20962. [2022-11-16 12:09:08,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20962 states, 20961 states have (on average 1.2017079337817853) internal successors, (25189), 20961 states have internal predecessors, (25189), 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) [2022-11-16 12:09:08,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20962 states to 20962 states and 25189 transitions. [2022-11-16 12:09:08,081 INFO L78 Accepts]: Start accepts. Automaton has 20962 states and 25189 transitions. Word has length 1672 [2022-11-16 12:09:08,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:09:08,083 INFO L495 AbstractCegarLoop]: Abstraction has 20962 states and 25189 transitions. [2022-11-16 12:09:08,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 557.3333333333334) internal successors, (1672), 3 states have internal predecessors, (1672), 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) [2022-11-16 12:09:08,084 INFO L276 IsEmpty]: Start isEmpty. Operand 20962 states and 25189 transitions. [2022-11-16 12:09:08,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1674 [2022-11-16 12:09:08,139 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:09:08,141 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:09:08,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-16 12:09:08,142 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:09:08,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:09:08,143 INFO L85 PathProgramCache]: Analyzing trace with hash -36266618, now seen corresponding path program 1 times [2022-11-16 12:09:08,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:09:08,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350301746] [2022-11-16 12:09:08,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:09:08,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:09:08,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:09:09,670 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-16 12:09:09,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:09:09,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350301746] [2022-11-16 12:09:09,670 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350301746] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:09:09,671 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:09:09,671 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:09:09,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599184273] [2022-11-16 12:09:09,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:09:09,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:09:09,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:09:09,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:09:09,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:09:09,675 INFO L87 Difference]: Start difference. First operand 20962 states and 25189 transitions. Second operand has 3 states, 3 states have (on average 554.3333333333334) internal successors, (1663), 2 states have internal predecessors, (1663), 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) [2022-11-16 12:09:16,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:09:16,818 INFO L93 Difference]: Finished difference Result 62298 states and 74805 transitions. [2022-11-16 12:09:16,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:09:16,819 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 554.3333333333334) internal successors, (1663), 2 states have internal predecessors, (1663), 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 1673 [2022-11-16 12:09:16,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:09:16,868 INFO L225 Difference]: With dead ends: 62298 [2022-11-16 12:09:16,868 INFO L226 Difference]: Without dead ends: 41339 [2022-11-16 12:09:16,880 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:09:16,881 INFO L413 NwaCegarLoop]: 1233 mSDtfsCounter, 2244 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 4644 mSolverCounterSat, 912 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2244 SdHoareTripleChecker+Valid, 1408 SdHoareTripleChecker+Invalid, 5556 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 912 IncrementalHoareTripleChecker+Valid, 4644 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2022-11-16 12:09:16,882 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2244 Valid, 1408 Invalid, 5556 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [912 Valid, 4644 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2022-11-16 12:09:16,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41339 states. [2022-11-16 12:09:17,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41339 to 41337. [2022-11-16 12:09:17,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41337 states, 41336 states have (on average 1.1456357654344882) internal successors, (47356), 41336 states have internal predecessors, (47356), 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) [2022-11-16 12:09:17,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41337 states to 41337 states and 47356 transitions. [2022-11-16 12:09:17,486 INFO L78 Accepts]: Start accepts. Automaton has 41337 states and 47356 transitions. Word has length 1673 [2022-11-16 12:09:17,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:09:17,487 INFO L495 AbstractCegarLoop]: Abstraction has 41337 states and 47356 transitions. [2022-11-16 12:09:17,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 554.3333333333334) internal successors, (1663), 2 states have internal predecessors, (1663), 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) [2022-11-16 12:09:17,488 INFO L276 IsEmpty]: Start isEmpty. Operand 41337 states and 47356 transitions. [2022-11-16 12:09:17,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1736 [2022-11-16 12:09:17,562 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:09:17,563 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:09:17,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-16 12:09:17,564 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:09:17,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:09:17,565 INFO L85 PathProgramCache]: Analyzing trace with hash 1157163599, now seen corresponding path program 1 times [2022-11-16 12:09:17,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:09:17,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539382991] [2022-11-16 12:09:17,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:09:17,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:09:17,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:09:18,982 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-16 12:09:18,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:09:18,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539382991] [2022-11-16 12:09:18,982 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539382991] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:09:18,982 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:09:18,983 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:09:18,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418156859] [2022-11-16 12:09:18,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:09:18,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:09:18,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:09:18,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:09:18,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:09:18,987 INFO L87 Difference]: Start difference. First operand 41337 states and 47356 transitions. Second operand has 3 states, 3 states have (on average 575.0) internal successors, (1725), 2 states have internal predecessors, (1725), 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) [2022-11-16 12:09:26,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:09:26,604 INFO L93 Difference]: Finished difference Result 120030 states and 137668 transitions. [2022-11-16 12:09:26,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:09:26,608 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 575.0) internal successors, (1725), 2 states have internal predecessors, (1725), 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 1735 [2022-11-16 12:09:26,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:09:26,703 INFO L225 Difference]: With dead ends: 120030 [2022-11-16 12:09:26,703 INFO L226 Difference]: Without dead ends: 78696 [2022-11-16 12:09:26,736 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:09:26,737 INFO L413 NwaCegarLoop]: 1282 mSDtfsCounter, 2233 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 4275 mSolverCounterSat, 1277 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2233 SdHoareTripleChecker+Valid, 1415 SdHoareTripleChecker+Invalid, 5552 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1277 IncrementalHoareTripleChecker+Valid, 4275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2022-11-16 12:09:26,738 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2233 Valid, 1415 Invalid, 5552 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1277 Valid, 4275 Invalid, 0 Unknown, 0 Unchecked, 6.9s Time] [2022-11-16 12:09:26,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78696 states. [2022-11-16 12:09:27,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78696 to 75296. [2022-11-16 12:09:27,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75296 states, 75295 states have (on average 1.1140314761936383) internal successors, (83881), 75295 states have internal predecessors, (83881), 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) [2022-11-16 12:09:27,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75296 states to 75296 states and 83881 transitions. [2022-11-16 12:09:27,949 INFO L78 Accepts]: Start accepts. Automaton has 75296 states and 83881 transitions. Word has length 1735 [2022-11-16 12:09:27,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:09:27,950 INFO L495 AbstractCegarLoop]: Abstraction has 75296 states and 83881 transitions. [2022-11-16 12:09:27,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 575.0) internal successors, (1725), 2 states have internal predecessors, (1725), 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) [2022-11-16 12:09:27,951 INFO L276 IsEmpty]: Start isEmpty. Operand 75296 states and 83881 transitions. [2022-11-16 12:09:28,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1757 [2022-11-16 12:09:28,063 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:09:28,069 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:09:28,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-16 12:09:28,070 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:09:28,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:09:28,071 INFO L85 PathProgramCache]: Analyzing trace with hash 1970493138, now seen corresponding path program 1 times [2022-11-16 12:09:28,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:09:28,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868809116] [2022-11-16 12:09:28,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:09:28,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:09:28,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:09:30,304 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2022-11-16 12:09:30,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:09:30,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868809116] [2022-11-16 12:09:30,305 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868809116] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:09:30,305 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:09:30,306 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:09:30,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145037539] [2022-11-16 12:09:30,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:09:30,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:09:30,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:09:30,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:09:30,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:09:30,309 INFO L87 Difference]: Start difference. First operand 75296 states and 83881 transitions. Second operand has 3 states, 3 states have (on average 564.0) internal successors, (1692), 2 states have internal predecessors, (1692), 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) [2022-11-16 12:09:38,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:09:38,436 INFO L93 Difference]: Finished difference Result 216832 states and 241610 transitions. [2022-11-16 12:09:38,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:09:38,437 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 564.0) internal successors, (1692), 2 states have internal predecessors, (1692), 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 1756 [2022-11-16 12:09:38,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:09:38,599 INFO L225 Difference]: With dead ends: 216832 [2022-11-16 12:09:38,599 INFO L226 Difference]: Without dead ends: 141539 [2022-11-16 12:09:38,624 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:09:38,625 INFO L413 NwaCegarLoop]: 993 mSDtfsCounter, 2090 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 4516 mSolverCounterSat, 1361 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2090 SdHoareTripleChecker+Valid, 1126 SdHoareTripleChecker+Invalid, 5877 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1361 IncrementalHoareTripleChecker+Valid, 4516 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:09:38,625 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2090 Valid, 1126 Invalid, 5877 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1361 Valid, 4516 Invalid, 0 Unknown, 0 Unchecked, 7.1s Time] [2022-11-16 12:09:38,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141539 states. [2022-11-16 12:09:40,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141539 to 136426. [2022-11-16 12:09:40,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136426 states, 136425 states have (on average 1.0975627634231262) internal successors, (149735), 136425 states have internal predecessors, (149735), 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) [2022-11-16 12:09:40,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136426 states to 136426 states and 149735 transitions. [2022-11-16 12:09:40,882 INFO L78 Accepts]: Start accepts. Automaton has 136426 states and 149735 transitions. Word has length 1756 [2022-11-16 12:09:40,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:09:40,883 INFO L495 AbstractCegarLoop]: Abstraction has 136426 states and 149735 transitions. [2022-11-16 12:09:40,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 564.0) internal successors, (1692), 2 states have internal predecessors, (1692), 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) [2022-11-16 12:09:40,883 INFO L276 IsEmpty]: Start isEmpty. Operand 136426 states and 149735 transitions. [2022-11-16 12:09:41,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2028 [2022-11-16 12:09:41,375 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:09:41,377 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:09:41,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-16 12:09:41,377 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:09:41,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:09:41,379 INFO L85 PathProgramCache]: Analyzing trace with hash 1572315472, now seen corresponding path program 1 times [2022-11-16 12:09:41,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:09:41,379 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18291167] [2022-11-16 12:09:41,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:09:41,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:09:41,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:09:44,178 INFO L134 CoverageAnalysis]: Checked inductivity of 550 backedges. 515 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-16 12:09:44,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:09:44,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18291167] [2022-11-16 12:09:44,179 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18291167] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:09:44,179 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:09:44,179 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:09:44,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324792173] [2022-11-16 12:09:44,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:09:44,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:09:44,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:09:44,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:09:44,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:09:44,183 INFO L87 Difference]: Start difference. First operand 136426 states and 149735 transitions. Second operand has 3 states, 3 states have (on average 664.3333333333334) internal successors, (1993), 3 states have internal predecessors, (1993), 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) [2022-11-16 12:09:53,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:09:53,200 INFO L93 Difference]: Finished difference Result 332288 states and 367142 transitions. [2022-11-16 12:09:53,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:09:53,201 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 664.3333333333334) internal successors, (1993), 3 states have internal predecessors, (1993), 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 2027 [2022-11-16 12:09:53,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:09:53,460 INFO L225 Difference]: With dead ends: 332288 [2022-11-16 12:09:53,461 INFO L226 Difference]: Without dead ends: 195865 [2022-11-16 12:09:53,491 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 [2022-11-16 12:09:53,492 INFO L413 NwaCegarLoop]: 2979 mSDtfsCounter, 1878 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 4472 mSolverCounterSat, 1296 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1878 SdHoareTripleChecker+Valid, 3085 SdHoareTripleChecker+Invalid, 5768 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1296 IncrementalHoareTripleChecker+Valid, 4472 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:09:53,493 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1878 Valid, 3085 Invalid, 5768 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1296 Valid, 4472 Invalid, 0 Unknown, 0 Unchecked, 7.2s Time] [2022-11-16 12:09:53,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195865 states. [2022-11-16 12:09:55,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195865 to 190764. [2022-11-16 12:09:55,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190764 states, 190763 states have (on average 1.094232110000367) internal successors, (208739), 190763 states have internal predecessors, (208739), 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) [2022-11-16 12:09:56,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190764 states to 190764 states and 208739 transitions. [2022-11-16 12:09:56,623 INFO L78 Accepts]: Start accepts. Automaton has 190764 states and 208739 transitions. Word has length 2027 [2022-11-16 12:09:56,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:09:56,624 INFO L495 AbstractCegarLoop]: Abstraction has 190764 states and 208739 transitions. [2022-11-16 12:09:56,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 664.3333333333334) internal successors, (1993), 3 states have internal predecessors, (1993), 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) [2022-11-16 12:09:56,625 INFO L276 IsEmpty]: Start isEmpty. Operand 190764 states and 208739 transitions. [2022-11-16 12:09:56,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2034 [2022-11-16 12:09:56,778 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:09:56,779 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:09:56,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-16 12:09:56,780 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:09:56,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:09:56,781 INFO L85 PathProgramCache]: Analyzing trace with hash -494931878, now seen corresponding path program 1 times [2022-11-16 12:09:56,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:09:56,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064369262] [2022-11-16 12:09:56,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:09:56,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:09:57,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:10:00,073 INFO L134 CoverageAnalysis]: Checked inductivity of 556 backedges. 377 proven. 0 refuted. 0 times theorem prover too weak. 179 trivial. 0 not checked. [2022-11-16 12:10:00,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:10:00,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064369262] [2022-11-16 12:10:00,074 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064369262] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:10:00,075 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:10:00,075 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:10:00,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164526034] [2022-11-16 12:10:00,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:10:00,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:10:00,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:10:00,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:10:00,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:10:00,080 INFO L87 Difference]: Start difference. First operand 190764 states and 208739 transitions. Second operand has 3 states, 3 states have (on average 630.3333333333334) internal successors, (1891), 3 states have internal predecessors, (1891), 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) [2022-11-16 12:10:08,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:10:08,787 INFO L93 Difference]: Finished difference Result 379825 states and 415395 transitions. [2022-11-16 12:10:08,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:10:08,788 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 630.3333333333334) internal successors, (1891), 3 states have internal predecessors, (1891), 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 2033 [2022-11-16 12:10:08,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:10:09,047 INFO L225 Difference]: With dead ends: 379825 [2022-11-16 12:10:09,047 INFO L226 Difference]: Without dead ends: 189064 [2022-11-16 12:10:09,126 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 [2022-11-16 12:10:09,127 INFO L413 NwaCegarLoop]: 1210 mSDtfsCounter, 292 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 4628 mSolverCounterSat, 840 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 292 SdHoareTripleChecker+Valid, 1487 SdHoareTripleChecker+Invalid, 5468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 840 IncrementalHoareTripleChecker+Valid, 4628 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2022-11-16 12:10:09,127 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [292 Valid, 1487 Invalid, 5468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [840 Valid, 4628 Invalid, 0 Unknown, 0 Unchecked, 6.9s Time] [2022-11-16 12:10:09,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189064 states. [2022-11-16 12:10:11,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189064 to 187359. [2022-11-16 12:10:11,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187359 states, 187358 states have (on average 1.0663222280340312) internal successors, (199784), 187358 states have internal predecessors, (199784), 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) [2022-11-16 12:10:11,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187359 states to 187359 states and 199784 transitions. [2022-11-16 12:10:11,975 INFO L78 Accepts]: Start accepts. Automaton has 187359 states and 199784 transitions. Word has length 2033 [2022-11-16 12:10:11,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:10:11,977 INFO L495 AbstractCegarLoop]: Abstraction has 187359 states and 199784 transitions. [2022-11-16 12:10:11,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 630.3333333333334) internal successors, (1891), 3 states have internal predecessors, (1891), 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) [2022-11-16 12:10:11,978 INFO L276 IsEmpty]: Start isEmpty. Operand 187359 states and 199784 transitions. [2022-11-16 12:10:12,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2146 [2022-11-16 12:10:12,164 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:10:12,165 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:10:12,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-16 12:10:12,165 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:10:12,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:10:12,167 INFO L85 PathProgramCache]: Analyzing trace with hash 1812687511, now seen corresponding path program 1 times [2022-11-16 12:10:12,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:10:12,167 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070384986] [2022-11-16 12:10:12,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:10:12,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:10:13,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:10:16,876 INFO L134 CoverageAnalysis]: Checked inductivity of 1256 backedges. 882 proven. 0 refuted. 0 times theorem prover too weak. 374 trivial. 0 not checked. [2022-11-16 12:10:16,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:10:16,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070384986] [2022-11-16 12:10:16,877 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070384986] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:10:16,877 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:10:16,878 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:10:16,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030741005] [2022-11-16 12:10:16,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:10:16,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:10:16,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:10:16,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:10:16,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:10:16,882 INFO L87 Difference]: Start difference. First operand 187359 states and 199784 transitions. Second operand has 3 states, 3 states have (on average 625.6666666666666) internal successors, (1877), 3 states have internal predecessors, (1877), 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) [2022-11-16 12:10:25,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:10:25,521 INFO L93 Difference]: Finished difference Result 439319 states and 469252 transitions. [2022-11-16 12:10:25,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:10:25,522 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 625.6666666666666) internal successors, (1877), 3 states have internal predecessors, (1877), 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 2145 [2022-11-16 12:10:25,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:10:26,345 INFO L225 Difference]: With dead ends: 439319 [2022-11-16 12:10:26,345 INFO L226 Difference]: Without dead ends: 251963 [2022-11-16 12:10:26,381 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 [2022-11-16 12:10:26,381 INFO L413 NwaCegarLoop]: 3029 mSDtfsCounter, 1808 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 4889 mSolverCounterSat, 755 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1808 SdHoareTripleChecker+Valid, 3210 SdHoareTripleChecker+Invalid, 5644 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 755 IncrementalHoareTripleChecker+Valid, 4889 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2022-11-16 12:10:26,382 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1808 Valid, 3210 Invalid, 5644 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [755 Valid, 4889 Invalid, 0 Unknown, 0 Unchecked, 6.9s Time] [2022-11-16 12:10:26,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251963 states. [2022-11-16 12:10:29,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251963 to 243421. [2022-11-16 12:10:29,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243421 states, 243420 states have (on average 1.0671925067784076) internal successors, (259776), 243420 states have internal predecessors, (259776), 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) [2022-11-16 12:10:30,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243421 states to 243421 states and 259776 transitions. [2022-11-16 12:10:30,577 INFO L78 Accepts]: Start accepts. Automaton has 243421 states and 259776 transitions. Word has length 2145 [2022-11-16 12:10:30,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:10:30,578 INFO L495 AbstractCegarLoop]: Abstraction has 243421 states and 259776 transitions. [2022-11-16 12:10:30,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 625.6666666666666) internal successors, (1877), 3 states have internal predecessors, (1877), 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) [2022-11-16 12:10:30,579 INFO L276 IsEmpty]: Start isEmpty. Operand 243421 states and 259776 transitions. [2022-11-16 12:10:30,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2157 [2022-11-16 12:10:30,744 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:10:30,746 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:10:30,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-16 12:10:30,746 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:10:30,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:10:30,747 INFO L85 PathProgramCache]: Analyzing trace with hash -2043264482, now seen corresponding path program 1 times [2022-11-16 12:10:30,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:10:30,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902020341] [2022-11-16 12:10:30,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:10:30,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:10:30,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:10:33,215 INFO L134 CoverageAnalysis]: Checked inductivity of 761 backedges. 533 proven. 0 refuted. 0 times theorem prover too weak. 228 trivial. 0 not checked. [2022-11-16 12:10:33,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:10:33,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902020341] [2022-11-16 12:10:33,216 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902020341] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:10:33,216 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:10:33,216 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:10:33,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475103559] [2022-11-16 12:10:33,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:10:33,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:10:33,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:10:33,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:10:33,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:10:33,221 INFO L87 Difference]: Start difference. First operand 243421 states and 259776 transitions. Second operand has 3 states, 3 states have (on average 643.0) internal successors, (1929), 3 states have internal predecessors, (1929), 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)