./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.05.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65187e84-0479-42f5-bf3f-ca5d6a91b609/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65187e84-0479-42f5-bf3f-ca5d6a91b609/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_65187e84-0479-42f5-bf3f-ca5d6a91b609/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65187e84-0479-42f5-bf3f-ca5d6a91b609/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.05.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65187e84-0479-42f5-bf3f-ca5d6a91b609/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_65187e84-0479-42f5-bf3f-ca5d6a91b609/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 b5bbf318bd4a4e295f88f23f80bb9f32022c2eeb214e815b87206f6eafbbf272 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 12:41:39,335 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:41:39,337 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:41:39,378 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:41:39,380 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:41:39,385 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:41:39,387 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:41:39,390 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:41:39,393 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:41:39,398 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:41:39,400 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:41:39,401 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:41:39,402 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:41:39,404 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:41:39,405 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:41:39,407 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:41:39,409 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:41:39,410 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:41:39,411 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:41:39,418 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:41:39,420 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:41:39,421 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:41:39,424 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:41:39,425 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:41:39,431 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:41:39,433 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:41:39,434 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:41:39,435 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:41:39,437 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:41:39,438 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:41:39,438 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:41:39,439 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:41:39,441 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:41:39,442 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:41:39,444 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:41:39,444 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:41:39,445 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:41:39,445 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:41:39,446 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:41:39,446 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:41:39,447 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:41:39,448 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65187e84-0479-42f5-bf3f-ca5d6a91b609/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-16 12:41:39,485 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:41:39,485 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:41:39,486 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:41:39,486 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:41:39,487 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:41:39,487 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:41:39,488 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:41:39,488 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:41:39,488 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:41:39,488 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:41:39,489 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 12:41:39,490 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:41:39,490 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 12:41:39,490 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:41:39,490 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 12:41:39,490 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:41:39,490 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 12:41:39,491 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 12:41:39,491 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 12:41:39,491 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:41:39,491 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 12:41:39,491 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:41:39,492 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:41:39,492 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:41:39,492 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:41:39,492 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:41:39,494 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:41:39,494 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 12:41:39,494 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 12:41:39,494 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 12:41:39,494 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 12:41:39,495 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 12:41:39,495 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 12:41:39,495 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_65187e84-0479-42f5-bf3f-ca5d6a91b609/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65187e84-0479-42f5-bf3f-ca5d6a91b609/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b5bbf318bd4a4e295f88f23f80bb9f32022c2eeb214e815b87206f6eafbbf272 [2022-11-16 12:41:39,788 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:41:39,811 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:41:39,814 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:41:39,815 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:41:39,816 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:41:39,817 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65187e84-0479-42f5-bf3f-ca5d6a91b609/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.05.cil-1.c [2022-11-16 12:41:39,899 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65187e84-0479-42f5-bf3f-ca5d6a91b609/bin/uautomizer-tPACEb0tL8/data/4fe2c4f68/f48950d9e42941e9931ba51012f0dd23/FLAGf780b2c6c [2022-11-16 12:41:40,394 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:41:40,395 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65187e84-0479-42f5-bf3f-ca5d6a91b609/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.05.cil-1.c [2022-11-16 12:41:40,406 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65187e84-0479-42f5-bf3f-ca5d6a91b609/bin/uautomizer-tPACEb0tL8/data/4fe2c4f68/f48950d9e42941e9931ba51012f0dd23/FLAGf780b2c6c [2022-11-16 12:41:40,735 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65187e84-0479-42f5-bf3f-ca5d6a91b609/bin/uautomizer-tPACEb0tL8/data/4fe2c4f68/f48950d9e42941e9931ba51012f0dd23 [2022-11-16 12:41:40,738 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:41:40,739 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:41:40,741 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:41:40,741 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:41:40,745 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:41:40,745 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:41:40" (1/1) ... [2022-11-16 12:41:40,747 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1df6b66c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:41:40, skipping insertion in model container [2022-11-16 12:41:40,747 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:41:40" (1/1) ... [2022-11-16 12:41:40,754 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:41:40,792 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:41:41,017 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_65187e84-0479-42f5-bf3f-ca5d6a91b609/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.05.cil-1.c[913,926] [2022-11-16 12:41:41,096 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_65187e84-0479-42f5-bf3f-ca5d6a91b609/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.05.cil-1.c[5977,5990] [2022-11-16 12:41:41,171 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:41:41,192 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:41:41,203 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_65187e84-0479-42f5-bf3f-ca5d6a91b609/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.05.cil-1.c[913,926] [2022-11-16 12:41:41,221 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_65187e84-0479-42f5-bf3f-ca5d6a91b609/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.05.cil-1.c[5977,5990] [2022-11-16 12:41:41,258 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:41:41,285 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:41:41,286 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:41:41 WrapperNode [2022-11-16 12:41:41,287 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:41:41,288 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:41:41,288 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:41:41,288 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:41:41,294 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:41:41" (1/1) ... [2022-11-16 12:41:41,304 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:41:41" (1/1) ... [2022-11-16 12:41:41,346 INFO L138 Inliner]: procedures = 58, calls = 63, calls flagged for inlining = 33, calls inlined = 33, statements flattened = 649 [2022-11-16 12:41:41,346 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:41:41,347 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:41:41,347 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:41:41,347 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:41:41,356 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:41:41" (1/1) ... [2022-11-16 12:41:41,357 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:41:41" (1/1) ... [2022-11-16 12:41:41,360 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:41:41" (1/1) ... [2022-11-16 12:41:41,361 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:41:41" (1/1) ... [2022-11-16 12:41:41,369 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:41:41" (1/1) ... [2022-11-16 12:41:41,394 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:41:41" (1/1) ... [2022-11-16 12:41:41,397 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:41:41" (1/1) ... [2022-11-16 12:41:41,399 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:41:41" (1/1) ... [2022-11-16 12:41:41,412 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:41:41,413 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:41:41,413 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:41:41,413 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:41:41,414 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:41:41" (1/1) ... [2022-11-16 12:41:41,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:41:41,434 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65187e84-0479-42f5-bf3f-ca5d6a91b609/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:41:41,447 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65187e84-0479-42f5-bf3f-ca5d6a91b609/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:41:41,459 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65187e84-0479-42f5-bf3f-ca5d6a91b609/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:41:41,486 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 12:41:41,486 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-11-16 12:41:41,486 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-11-16 12:41:41,487 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify_threads [2022-11-16 12:41:41,487 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify_threads [2022-11-16 12:41:41,487 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2022-11-16 12:41:41,487 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2022-11-16 12:41:41,487 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2022-11-16 12:41:41,487 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2022-11-16 12:41:41,488 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2022-11-16 12:41:41,488 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2022-11-16 12:41:41,488 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2022-11-16 12:41:41,488 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2022-11-16 12:41:41,488 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2022-11-16 12:41:41,489 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2022-11-16 12:41:41,489 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 12:41:41,489 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2022-11-16 12:41:41,489 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2022-11-16 12:41:41,489 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:41:41,489 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:41:41,490 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2022-11-16 12:41:41,490 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2022-11-16 12:41:41,602 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:41:41,604 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:41:42,350 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:41:42,359 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:41:42,360 INFO L300 CfgBuilder]: Removed 12 assume(true) statements. [2022-11-16 12:41:42,362 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:41:42 BoogieIcfgContainer [2022-11-16 12:41:42,362 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:41:42,364 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:41:42,365 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:41:42,368 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:41:42,368 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:41:40" (1/3) ... [2022-11-16 12:41:42,369 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ef67580 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:41:42, skipping insertion in model container [2022-11-16 12:41:42,369 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:41:41" (2/3) ... [2022-11-16 12:41:42,370 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ef67580 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:41:42, skipping insertion in model container [2022-11-16 12:41:42,370 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:41:42" (3/3) ... [2022-11-16 12:41:42,371 INFO L112 eAbstractionObserver]: Analyzing ICFG pc_sfifo_1.cil-2+token_ring.05.cil-1.c [2022-11-16 12:41:42,389 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:41:42,390 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-16 12:41:42,472 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:41:42,478 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;@28a09e06, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:41:42,478 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-16 12:41:42,483 INFO L276 IsEmpty]: Start isEmpty. Operand has 279 states, 242 states have (on average 1.6074380165289257) internal successors, (389), 247 states have internal predecessors, (389), 25 states have call successors, (25), 9 states have call predecessors, (25), 9 states have return successors, (25), 24 states have call predecessors, (25), 25 states have call successors, (25) [2022-11-16 12:41:42,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-16 12:41:42,493 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:41:42,494 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:41:42,495 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:41:42,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:41:42,500 INFO L85 PathProgramCache]: Analyzing trace with hash -196001466, now seen corresponding path program 1 times [2022-11-16 12:41:42,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:41:42,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746610936] [2022-11-16 12:41:42,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:41:42,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:41:42,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:42,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-16 12:41:42,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:42,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-16 12:41:42,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:42,809 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 12:41:42,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:41:42,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746610936] [2022-11-16 12:41:42,811 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746610936] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:41:42,812 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:41:42,812 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 12:41:42,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142784855] [2022-11-16 12:41:42,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:41:42,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:41:42,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:41:42,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:41:42,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:41:42,852 INFO L87 Difference]: Start difference. First operand has 279 states, 242 states have (on average 1.6074380165289257) internal successors, (389), 247 states have internal predecessors, (389), 25 states have call successors, (25), 9 states have call predecessors, (25), 9 states have return successors, (25), 24 states have call predecessors, (25), 25 states have call successors, (25) Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 12:41:43,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:41:43,457 INFO L93 Difference]: Finished difference Result 610 states and 960 transitions. [2022-11-16 12:41:43,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:41:43,460 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 44 [2022-11-16 12:41:43,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:41:43,481 INFO L225 Difference]: With dead ends: 610 [2022-11-16 12:41:43,481 INFO L226 Difference]: Without dead ends: 339 [2022-11-16 12:41:43,491 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:41:43,495 INFO L413 NwaCegarLoop]: 292 mSDtfsCounter, 524 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 543 SdHoareTripleChecker+Valid, 574 SdHoareTripleChecker+Invalid, 265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 12:41:43,496 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [543 Valid, 574 Invalid, 265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-16 12:41:43,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2022-11-16 12:41:43,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 333. [2022-11-16 12:41:43,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333 states, 291 states have (on average 1.47766323024055) internal successors, (430), 295 states have internal predecessors, (430), 29 states have call successors, (29), 11 states have call predecessors, (29), 11 states have return successors, (33), 27 states have call predecessors, (33), 27 states have call successors, (33) [2022-11-16 12:41:43,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 492 transitions. [2022-11-16 12:41:43,601 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 492 transitions. Word has length 44 [2022-11-16 12:41:43,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:41:43,603 INFO L495 AbstractCegarLoop]: Abstraction has 333 states and 492 transitions. [2022-11-16 12:41:43,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 12:41:43,603 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 492 transitions. [2022-11-16 12:41:43,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-16 12:41:43,614 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:41:43,614 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:41:43,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 12:41:43,615 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:41:43,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:41:43,615 INFO L85 PathProgramCache]: Analyzing trace with hash 1414910090, now seen corresponding path program 1 times [2022-11-16 12:41:43,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:41:43,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984470542] [2022-11-16 12:41:43,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:41:43,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:41:43,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:43,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-16 12:41:43,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:43,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 12:41:43,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:43,852 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 12:41:43,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:41:43,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984470542] [2022-11-16 12:41:43,853 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984470542] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:41:43,853 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:41:43,854 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 12:41:43,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120315404] [2022-11-16 12:41:43,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:41:43,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:41:43,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:41:43,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:41:43,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:41:43,862 INFO L87 Difference]: Start difference. First operand 333 states and 492 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 12:41:44,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:41:44,312 INFO L93 Difference]: Finished difference Result 581 states and 832 transitions. [2022-11-16 12:41:44,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:41:44,317 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 45 [2022-11-16 12:41:44,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:41:44,323 INFO L225 Difference]: With dead ends: 581 [2022-11-16 12:41:44,323 INFO L226 Difference]: Without dead ends: 457 [2022-11-16 12:41:44,326 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:41:44,327 INFO L413 NwaCegarLoop]: 314 mSDtfsCounter, 229 mSDsluCounter, 441 mSDsCounter, 0 mSdLazyCounter, 346 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 231 SdHoareTripleChecker+Valid, 755 SdHoareTripleChecker+Invalid, 376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 12:41:44,328 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [231 Valid, 755 Invalid, 376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 346 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-16 12:41:44,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 457 states. [2022-11-16 12:41:44,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 457 to 400. [2022-11-16 12:41:44,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 400 states, 352 states have (on average 1.4602272727272727) internal successors, (514), 356 states have internal predecessors, (514), 32 states have call successors, (32), 14 states have call predecessors, (32), 14 states have return successors, (36), 30 states have call predecessors, (36), 30 states have call successors, (36) [2022-11-16 12:41:44,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 582 transitions. [2022-11-16 12:41:44,389 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 582 transitions. Word has length 45 [2022-11-16 12:41:44,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:41:44,390 INFO L495 AbstractCegarLoop]: Abstraction has 400 states and 582 transitions. [2022-11-16 12:41:44,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 12:41:44,390 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 582 transitions. [2022-11-16 12:41:44,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-16 12:41:44,392 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:41:44,392 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:41:44,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 12:41:44,392 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:41:44,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:41:44,393 INFO L85 PathProgramCache]: Analyzing trace with hash 130552629, now seen corresponding path program 1 times [2022-11-16 12:41:44,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:41:44,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453258516] [2022-11-16 12:41:44,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:41:44,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:41:44,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:44,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-16 12:41:44,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:44,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 12:41:44,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:44,497 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 12:41:44,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:41:44,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453258516] [2022-11-16 12:41:44,497 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453258516] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:41:44,498 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:41:44,498 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 12:41:44,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353942446] [2022-11-16 12:41:44,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:41:44,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:41:44,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:41:44,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:41:44,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:41:44,500 INFO L87 Difference]: Start difference. First operand 400 states and 582 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 12:41:44,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:41:44,963 INFO L93 Difference]: Finished difference Result 808 states and 1141 transitions. [2022-11-16 12:41:44,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:41:44,964 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 45 [2022-11-16 12:41:44,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:41:44,968 INFO L225 Difference]: With dead ends: 808 [2022-11-16 12:41:44,969 INFO L226 Difference]: Without dead ends: 617 [2022-11-16 12:41:44,974 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:41:44,978 INFO L413 NwaCegarLoop]: 288 mSDtfsCounter, 533 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 552 SdHoareTripleChecker+Valid, 568 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 12:41:44,980 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [552 Valid, 568 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-16 12:41:44,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 617 states. [2022-11-16 12:41:45,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 617 to 565. [2022-11-16 12:41:45,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 565 states, 498 states have (on average 1.4136546184738956) internal successors, (704), 505 states have internal predecessors, (704), 43 states have call successors, (43), 21 states have call predecessors, (43), 22 states have return successors, (53), 39 states have call predecessors, (53), 41 states have call successors, (53) [2022-11-16 12:41:45,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 565 states to 565 states and 800 transitions. [2022-11-16 12:41:45,051 INFO L78 Accepts]: Start accepts. Automaton has 565 states and 800 transitions. Word has length 45 [2022-11-16 12:41:45,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:41:45,053 INFO L495 AbstractCegarLoop]: Abstraction has 565 states and 800 transitions. [2022-11-16 12:41:45,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 12:41:45,053 INFO L276 IsEmpty]: Start isEmpty. Operand 565 states and 800 transitions. [2022-11-16 12:41:45,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-16 12:41:45,059 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:41:45,059 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:41:45,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 12:41:45,060 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:41:45,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:41:45,061 INFO L85 PathProgramCache]: Analyzing trace with hash -1692231402, now seen corresponding path program 1 times [2022-11-16 12:41:45,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:41:45,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084094180] [2022-11-16 12:41:45,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:41:45,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:41:45,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:45,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-16 12:41:45,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:45,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-16 12:41:45,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:45,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-16 12:41:45,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:45,248 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-16 12:41:45,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:41:45,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084094180] [2022-11-16 12:41:45,261 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084094180] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:41:45,261 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:41:45,261 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 12:41:45,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105151345] [2022-11-16 12:41:45,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:41:45,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:41:45,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:41:45,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:41:45,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:41:45,263 INFO L87 Difference]: Start difference. First operand 565 states and 800 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 12:41:45,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:41:45,695 INFO L93 Difference]: Finished difference Result 1149 states and 1585 transitions. [2022-11-16 12:41:45,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:41:45,696 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 62 [2022-11-16 12:41:45,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:41:45,700 INFO L225 Difference]: With dead ends: 1149 [2022-11-16 12:41:45,700 INFO L226 Difference]: Without dead ends: 793 [2022-11-16 12:41:45,702 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:41:45,703 INFO L413 NwaCegarLoop]: 335 mSDtfsCounter, 213 mSDsluCounter, 472 mSDsCounter, 0 mSdLazyCounter, 367 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 807 SdHoareTripleChecker+Invalid, 393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 12:41:45,703 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 807 Invalid, 393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 367 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 12:41:45,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 793 states. [2022-11-16 12:41:45,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 793 to 755. [2022-11-16 12:41:45,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 755 states, 664 states have (on average 1.3614457831325302) internal successors, (904), 673 states have internal predecessors, (904), 57 states have call successors, (57), 29 states have call predecessors, (57), 32 states have return successors, (77), 53 states have call predecessors, (77), 55 states have call successors, (77) [2022-11-16 12:41:45,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 755 states to 755 states and 1038 transitions. [2022-11-16 12:41:45,757 INFO L78 Accepts]: Start accepts. Automaton has 755 states and 1038 transitions. Word has length 62 [2022-11-16 12:41:45,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:41:45,758 INFO L495 AbstractCegarLoop]: Abstraction has 755 states and 1038 transitions. [2022-11-16 12:41:45,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 12:41:45,759 INFO L276 IsEmpty]: Start isEmpty. Operand 755 states and 1038 transitions. [2022-11-16 12:41:45,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-16 12:41:45,761 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:41:45,761 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:41:45,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 12:41:45,761 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:41:45,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:41:45,762 INFO L85 PathProgramCache]: Analyzing trace with hash 492946489, now seen corresponding path program 1 times [2022-11-16 12:41:45,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:41:45,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557501726] [2022-11-16 12:41:45,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:41:45,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:41:45,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:45,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-16 12:41:45,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:45,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-16 12:41:45,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:45,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-16 12:41:45,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:45,832 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-16 12:41:45,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:41:45,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557501726] [2022-11-16 12:41:45,833 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557501726] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:41:45,833 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:41:45,833 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 12:41:45,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868035535] [2022-11-16 12:41:45,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:41:45,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:41:45,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:41:45,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:41:45,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:41:45,835 INFO L87 Difference]: Start difference. First operand 755 states and 1038 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-16 12:41:46,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:41:46,216 INFO L93 Difference]: Finished difference Result 1408 states and 1891 transitions. [2022-11-16 12:41:46,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:41:46,216 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 67 [2022-11-16 12:41:46,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:41:46,221 INFO L225 Difference]: With dead ends: 1408 [2022-11-16 12:41:46,222 INFO L226 Difference]: Without dead ends: 954 [2022-11-16 12:41:46,223 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:41:46,224 INFO L413 NwaCegarLoop]: 284 mSDtfsCounter, 520 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 539 SdHoareTripleChecker+Valid, 566 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 12:41:46,225 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [539 Valid, 566 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 12:41:46,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 954 states. [2022-11-16 12:41:46,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 954 to 899. [2022-11-16 12:41:46,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 899 states, 792 states have (on average 1.332070707070707) internal successors, (1055), 803 states have internal predecessors, (1055), 65 states have call successors, (65), 35 states have call predecessors, (65), 40 states have return successors, (91), 61 states have call predecessors, (91), 63 states have call successors, (91) [2022-11-16 12:41:46,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 899 states to 899 states and 1211 transitions. [2022-11-16 12:41:46,312 INFO L78 Accepts]: Start accepts. Automaton has 899 states and 1211 transitions. Word has length 67 [2022-11-16 12:41:46,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:41:46,312 INFO L495 AbstractCegarLoop]: Abstraction has 899 states and 1211 transitions. [2022-11-16 12:41:46,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-16 12:41:46,313 INFO L276 IsEmpty]: Start isEmpty. Operand 899 states and 1211 transitions. [2022-11-16 12:41:46,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-16 12:41:46,315 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:41:46,315 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:41:46,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 12:41:46,315 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:41:46,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:41:46,316 INFO L85 PathProgramCache]: Analyzing trace with hash 1766542515, now seen corresponding path program 1 times [2022-11-16 12:41:46,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:41:46,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530650562] [2022-11-16 12:41:46,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:41:46,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:41:46,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:46,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-16 12:41:46,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:46,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-16 12:41:46,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:46,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-16 12:41:46,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:46,449 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 12:41:46,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:41:46,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530650562] [2022-11-16 12:41:46,450 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530650562] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:41:46,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1156037946] [2022-11-16 12:41:46,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:41:46,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:41:46,451 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65187e84-0479-42f5-bf3f-ca5d6a91b609/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:41:46,454 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65187e84-0479-42f5-bf3f-ca5d6a91b609/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:41:46,464 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65187e84-0479-42f5-bf3f-ca5d6a91b609/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 12:41:46,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:46,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 12:41:46,593 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:41:46,759 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:41:46,759 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:41:46,825 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-16 12:41:46,830 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1156037946] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-16 12:41:46,830 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:41:46,831 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6, 4] total 8 [2022-11-16 12:41:46,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070540753] [2022-11-16 12:41:46,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:41:46,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:41:46,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:41:46,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:41:46,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:41:46,833 INFO L87 Difference]: Start difference. First operand 899 states and 1211 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 12:41:47,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:41:47,026 INFO L93 Difference]: Finished difference Result 955 states and 1279 transitions. [2022-11-16 12:41:47,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:41:47,027 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 68 [2022-11-16 12:41:47,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:41:47,031 INFO L225 Difference]: With dead ends: 955 [2022-11-16 12:41:47,032 INFO L226 Difference]: Without dead ends: 952 [2022-11-16 12:41:47,032 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:41:47,033 INFO L413 NwaCegarLoop]: 426 mSDtfsCounter, 713 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 713 SdHoareTripleChecker+Valid, 493 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:41:47,034 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [713 Valid, 493 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:41:47,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 952 states. [2022-11-16 12:41:47,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 952 to 898. [2022-11-16 12:41:47,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 898 states, 792 states have (on average 1.3295454545454546) internal successors, (1053), 802 states have internal predecessors, (1053), 64 states have call successors, (64), 35 states have call predecessors, (64), 40 states have return successors, (91), 61 states have call predecessors, (91), 63 states have call successors, (91) [2022-11-16 12:41:47,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 898 states to 898 states and 1208 transitions. [2022-11-16 12:41:47,125 INFO L78 Accepts]: Start accepts. Automaton has 898 states and 1208 transitions. Word has length 68 [2022-11-16 12:41:47,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:41:47,128 INFO L495 AbstractCegarLoop]: Abstraction has 898 states and 1208 transitions. [2022-11-16 12:41:47,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 12:41:47,128 INFO L276 IsEmpty]: Start isEmpty. Operand 898 states and 1208 transitions. [2022-11-16 12:41:47,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-16 12:41:47,130 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:41:47,131 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:41:47,148 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65187e84-0479-42f5-bf3f-ca5d6a91b609/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-16 12:41:47,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65187e84-0479-42f5-bf3f-ca5d6a91b609/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:41:47,336 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:41:47,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:41:47,337 INFO L85 PathProgramCache]: Analyzing trace with hash -1072636420, now seen corresponding path program 1 times [2022-11-16 12:41:47,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:41:47,338 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031577105] [2022-11-16 12:41:47,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:41:47,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:41:47,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:47,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-16 12:41:47,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:47,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-16 12:41:47,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:47,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-16 12:41:47,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:47,487 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 12:41:47,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:41:47,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031577105] [2022-11-16 12:41:47,503 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031577105] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:41:47,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1167821183] [2022-11-16 12:41:47,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:41:47,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:41:47,504 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65187e84-0479-42f5-bf3f-ca5d6a91b609/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:41:47,512 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65187e84-0479-42f5-bf3f-ca5d6a91b609/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:41:47,535 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65187e84-0479-42f5-bf3f-ca5d6a91b609/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 12:41:47,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:47,634 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-16 12:41:47,640 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:41:47,977 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:41:47,977 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:41:48,070 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-16 12:41:48,070 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1167821183] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:41:48,070 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:41:48,071 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 4] total 11 [2022-11-16 12:41:48,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018183788] [2022-11-16 12:41:48,071 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:41:48,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-16 12:41:48,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:41:48,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-16 12:41:48,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-11-16 12:41:48,073 INFO L87 Difference]: Start difference. First operand 898 states and 1208 transitions. Second operand has 11 states, 11 states have (on average 13.727272727272727) internal successors, (151), 10 states have internal predecessors, (151), 7 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2022-11-16 12:41:49,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:41:49,914 INFO L93 Difference]: Finished difference Result 2598 states and 3428 transitions. [2022-11-16 12:41:49,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-11-16 12:41:49,914 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 13.727272727272727) internal successors, (151), 10 states have internal predecessors, (151), 7 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) Word has length 69 [2022-11-16 12:41:49,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:41:49,923 INFO L225 Difference]: With dead ends: 2598 [2022-11-16 12:41:49,923 INFO L226 Difference]: Without dead ends: 2054 [2022-11-16 12:41:49,926 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 460 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=324, Invalid=1482, Unknown=0, NotChecked=0, Total=1806 [2022-11-16 12:41:49,926 INFO L413 NwaCegarLoop]: 392 mSDtfsCounter, 877 mSDsluCounter, 2426 mSDsCounter, 0 mSdLazyCounter, 1551 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 903 SdHoareTripleChecker+Valid, 2818 SdHoareTripleChecker+Invalid, 1592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1551 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:41:49,927 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [903 Valid, 2818 Invalid, 1592 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 1551 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-16 12:41:49,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2054 states. [2022-11-16 12:41:50,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2054 to 1287. [2022-11-16 12:41:50,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1287 states, 1142 states have (on average 1.3021015761821366) internal successors, (1487), 1160 states have internal predecessors, (1487), 84 states have call successors, (84), 49 states have call predecessors, (84), 59 states have return successors, (125), 78 states have call predecessors, (125), 83 states have call successors, (125) [2022-11-16 12:41:50,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1287 states to 1287 states and 1696 transitions. [2022-11-16 12:41:50,050 INFO L78 Accepts]: Start accepts. Automaton has 1287 states and 1696 transitions. Word has length 69 [2022-11-16 12:41:50,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:41:50,050 INFO L495 AbstractCegarLoop]: Abstraction has 1287 states and 1696 transitions. [2022-11-16 12:41:50,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.727272727272727) internal successors, (151), 10 states have internal predecessors, (151), 7 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2022-11-16 12:41:50,050 INFO L276 IsEmpty]: Start isEmpty. Operand 1287 states and 1696 transitions. [2022-11-16 12:41:50,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-11-16 12:41:50,054 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:41:50,054 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:41:50,064 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65187e84-0479-42f5-bf3f-ca5d6a91b609/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-16 12:41:50,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65187e84-0479-42f5-bf3f-ca5d6a91b609/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:41:50,259 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:41:50,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:41:50,260 INFO L85 PathProgramCache]: Analyzing trace with hash -357727812, now seen corresponding path program 1 times [2022-11-16 12:41:50,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:41:50,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502212363] [2022-11-16 12:41:50,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:41:50,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:41:50,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:50,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-16 12:41:50,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:50,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-16 12:41:50,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:50,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-16 12:41:50,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:50,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-16 12:41:50,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:50,405 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-11-16 12:41:50,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:41:50,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502212363] [2022-11-16 12:41:50,406 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502212363] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:41:50,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1124444514] [2022-11-16 12:41:50,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:41:50,407 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:41:50,407 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65187e84-0479-42f5-bf3f-ca5d6a91b609/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:41:50,408 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65187e84-0479-42f5-bf3f-ca5d6a91b609/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:41:50,435 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65187e84-0479-42f5-bf3f-ca5d6a91b609/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 12:41:50,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:50,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 12:41:50,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:41:50,571 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-16 12:41:50,571 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:41:50,572 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1124444514] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:41:50,572 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:41:50,572 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-11-16 12:41:50,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090463585] [2022-11-16 12:41:50,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:41:50,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:41:50,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:41:50,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:41:50,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:41:50,574 INFO L87 Difference]: Start difference. First operand 1287 states and 1696 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-16 12:41:50,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:41:50,684 INFO L93 Difference]: Finished difference Result 2010 states and 2634 transitions. [2022-11-16 12:41:50,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:41:50,684 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 88 [2022-11-16 12:41:50,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:41:50,690 INFO L225 Difference]: With dead ends: 2010 [2022-11-16 12:41:50,690 INFO L226 Difference]: Without dead ends: 1165 [2022-11-16 12:41:50,692 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:41:50,693 INFO L413 NwaCegarLoop]: 432 mSDtfsCounter, 361 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 361 SdHoareTripleChecker+Valid, 507 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:41:50,693 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [361 Valid, 507 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:41:50,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1165 states. [2022-11-16 12:41:50,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1165 to 1150. [2022-11-16 12:41:50,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1150 states, 1021 states have (on average 1.3016650342801175) internal successors, (1329), 1038 states have internal predecessors, (1329), 76 states have call successors, (76), 43 states have call predecessors, (76), 51 states have return successors, (111), 69 states have call predecessors, (111), 75 states have call successors, (111) [2022-11-16 12:41:50,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1150 states to 1150 states and 1516 transitions. [2022-11-16 12:41:50,787 INFO L78 Accepts]: Start accepts. Automaton has 1150 states and 1516 transitions. Word has length 88 [2022-11-16 12:41:50,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:41:50,788 INFO L495 AbstractCegarLoop]: Abstraction has 1150 states and 1516 transitions. [2022-11-16 12:41:50,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-16 12:41:50,788 INFO L276 IsEmpty]: Start isEmpty. Operand 1150 states and 1516 transitions. [2022-11-16 12:41:50,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-11-16 12:41:50,822 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:41:50,822 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:41:50,832 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65187e84-0479-42f5-bf3f-ca5d6a91b609/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-16 12:41:51,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65187e84-0479-42f5-bf3f-ca5d6a91b609/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-16 12:41:51,028 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:41:51,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:41:51,028 INFO L85 PathProgramCache]: Analyzing trace with hash -884291044, now seen corresponding path program 1 times [2022-11-16 12:41:51,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:41:51,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948339756] [2022-11-16 12:41:51,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:41:51,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:41:51,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:51,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-16 12:41:51,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:51,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-16 12:41:51,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:51,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-16 12:41:51,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:51,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-16 12:41:51,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:51,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-16 12:41:51,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:51,195 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 12:41:51,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:41:51,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948339756] [2022-11-16 12:41:51,195 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948339756] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:41:51,196 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:41:51,196 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 12:41:51,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571002823] [2022-11-16 12:41:51,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:41:51,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:41:51,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:41:51,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:41:51,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:41:51,198 INFO L87 Difference]: Start difference. First operand 1150 states and 1516 transitions. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 12:41:52,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:41:52,995 INFO L93 Difference]: Finished difference Result 1662 states and 2323 transitions. [2022-11-16 12:41:52,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 12:41:52,995 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 101 [2022-11-16 12:41:52,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:41:53,009 INFO L225 Difference]: With dead ends: 1662 [2022-11-16 12:41:53,010 INFO L226 Difference]: Without dead ends: 1473 [2022-11-16 12:41:53,011 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-11-16 12:41:53,012 INFO L413 NwaCegarLoop]: 253 mSDtfsCounter, 901 mSDsluCounter, 664 mSDsCounter, 0 mSdLazyCounter, 1237 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 917 SdHoareTripleChecker+Valid, 917 SdHoareTripleChecker+Invalid, 1327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 1237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-16 12:41:53,012 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [917 Valid, 917 Invalid, 1327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 1237 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-16 12:41:53,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1473 states. [2022-11-16 12:41:53,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1473 to 1344. [2022-11-16 12:41:53,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1344 states, 1194 states have (on average 1.338358458961474) internal successors, (1598), 1212 states have internal predecessors, (1598), 90 states have call successors, (90), 49 states have call predecessors, (90), 58 states have return successors, (128), 83 states have call predecessors, (128), 89 states have call successors, (128) [2022-11-16 12:41:53,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1344 states to 1344 states and 1816 transitions. [2022-11-16 12:41:53,202 INFO L78 Accepts]: Start accepts. Automaton has 1344 states and 1816 transitions. Word has length 101 [2022-11-16 12:41:53,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:41:53,202 INFO L495 AbstractCegarLoop]: Abstraction has 1344 states and 1816 transitions. [2022-11-16 12:41:53,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 12:41:53,202 INFO L276 IsEmpty]: Start isEmpty. Operand 1344 states and 1816 transitions. [2022-11-16 12:41:53,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-11-16 12:41:53,206 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:41:53,207 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:41:53,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 12:41:53,208 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:41:53,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:41:53,209 INFO L85 PathProgramCache]: Analyzing trace with hash 1693791648, now seen corresponding path program 1 times [2022-11-16 12:41:53,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:41:53,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227356565] [2022-11-16 12:41:53,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:41:53,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:41:53,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:53,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-16 12:41:53,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:53,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-16 12:41:53,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:53,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-16 12:41:53,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:53,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-16 12:41:53,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:53,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-16 12:41:53,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:53,421 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 12:41:53,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:41:53,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227356565] [2022-11-16 12:41:53,422 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227356565] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:41:53,422 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:41:53,422 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:41:53,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306325799] [2022-11-16 12:41:53,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:41:53,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:41:53,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:41:53,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:41:53,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:41:53,424 INFO L87 Difference]: Start difference. First operand 1344 states and 1816 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 12:41:55,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:41:55,639 INFO L93 Difference]: Finished difference Result 2120 states and 3034 transitions. [2022-11-16 12:41:55,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-16 12:41:55,640 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 101 [2022-11-16 12:41:55,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:41:55,648 INFO L225 Difference]: With dead ends: 2120 [2022-11-16 12:41:55,649 INFO L226 Difference]: Without dead ends: 1737 [2022-11-16 12:41:55,651 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-16 12:41:55,651 INFO L413 NwaCegarLoop]: 358 mSDtfsCounter, 916 mSDsluCounter, 1191 mSDsCounter, 0 mSdLazyCounter, 1860 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 932 SdHoareTripleChecker+Valid, 1549 SdHoareTripleChecker+Invalid, 1919 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 1860 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-16 12:41:55,669 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [932 Valid, 1549 Invalid, 1919 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 1860 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-16 12:41:55,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1737 states. [2022-11-16 12:41:55,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1737 to 1525. [2022-11-16 12:41:55,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1525 states, 1354 states have (on average 1.3596750369276218) internal successors, (1841), 1373 states have internal predecessors, (1841), 104 states have call successors, (104), 55 states have call predecessors, (104), 65 states have return successors, (144), 98 states have call predecessors, (144), 103 states have call successors, (144) [2022-11-16 12:41:55,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1525 states to 1525 states and 2089 transitions. [2022-11-16 12:41:55,840 INFO L78 Accepts]: Start accepts. Automaton has 1525 states and 2089 transitions. Word has length 101 [2022-11-16 12:41:55,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:41:55,841 INFO L495 AbstractCegarLoop]: Abstraction has 1525 states and 2089 transitions. [2022-11-16 12:41:55,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 12:41:55,841 INFO L276 IsEmpty]: Start isEmpty. Operand 1525 states and 2089 transitions. [2022-11-16 12:41:55,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-11-16 12:41:55,844 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:41:55,844 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:41:55,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-16 12:41:55,845 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:41:55,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:41:55,846 INFO L85 PathProgramCache]: Analyzing trace with hash -185339298, now seen corresponding path program 1 times [2022-11-16 12:41:55,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:41:55,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398739233] [2022-11-16 12:41:55,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:41:55,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:41:55,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:55,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-16 12:41:55,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:55,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-16 12:41:55,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:55,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-16 12:41:55,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:56,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-16 12:41:56,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:56,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-16 12:41:56,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:56,013 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 12:41:56,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:41:56,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398739233] [2022-11-16 12:41:56,014 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398739233] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:41:56,014 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:41:56,014 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:41:56,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972802914] [2022-11-16 12:41:56,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:41:56,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:41:56,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:41:56,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:41:56,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:41:56,017 INFO L87 Difference]: Start difference. First operand 1525 states and 2089 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 12:41:57,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:41:57,273 INFO L93 Difference]: Finished difference Result 2305 states and 3321 transitions. [2022-11-16 12:41:57,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:41:57,273 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 101 [2022-11-16 12:41:57,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:41:57,281 INFO L225 Difference]: With dead ends: 2305 [2022-11-16 12:41:57,281 INFO L226 Difference]: Without dead ends: 1741 [2022-11-16 12:41:57,283 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-11-16 12:41:57,284 INFO L413 NwaCegarLoop]: 217 mSDtfsCounter, 709 mSDsluCounter, 698 mSDsCounter, 0 mSdLazyCounter, 968 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 726 SdHoareTripleChecker+Valid, 915 SdHoareTripleChecker+Invalid, 1030 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 968 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-16 12:41:57,284 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [726 Valid, 915 Invalid, 1030 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 968 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-16 12:41:57,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1741 states. [2022-11-16 12:41:57,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1741 to 1525. [2022-11-16 12:41:57,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1525 states, 1354 states have (on average 1.3574593796159526) internal successors, (1838), 1373 states have internal predecessors, (1838), 104 states have call successors, (104), 55 states have call predecessors, (104), 65 states have return successors, (144), 98 states have call predecessors, (144), 103 states have call successors, (144) [2022-11-16 12:41:57,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1525 states to 1525 states and 2086 transitions. [2022-11-16 12:41:57,485 INFO L78 Accepts]: Start accepts. Automaton has 1525 states and 2086 transitions. Word has length 101 [2022-11-16 12:41:57,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:41:57,486 INFO L495 AbstractCegarLoop]: Abstraction has 1525 states and 2086 transitions. [2022-11-16 12:41:57,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 12:41:57,486 INFO L276 IsEmpty]: Start isEmpty. Operand 1525 states and 2086 transitions. [2022-11-16 12:41:57,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-11-16 12:41:57,489 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:41:57,489 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:41:57,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-16 12:41:57,490 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:41:57,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:41:57,490 INFO L85 PathProgramCache]: Analyzing trace with hash 1381418652, now seen corresponding path program 1 times [2022-11-16 12:41:57,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:41:57,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214758141] [2022-11-16 12:41:57,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:41:57,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:41:57,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:57,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-16 12:41:57,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:57,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-16 12:41:57,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:57,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-16 12:41:57,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:57,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-16 12:41:57,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:57,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-16 12:41:57,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:57,684 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 12:41:57,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:41:57,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214758141] [2022-11-16 12:41:57,684 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214758141] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:41:57,685 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:41:57,685 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:41:57,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325695749] [2022-11-16 12:41:57,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:41:57,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:41:57,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:41:57,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:41:57,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:41:57,686 INFO L87 Difference]: Start difference. First operand 1525 states and 2086 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 12:41:59,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:41:59,952 INFO L93 Difference]: Finished difference Result 2789 states and 4053 transitions. [2022-11-16 12:41:59,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-16 12:41:59,953 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 101 [2022-11-16 12:41:59,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:41:59,963 INFO L225 Difference]: With dead ends: 2789 [2022-11-16 12:41:59,964 INFO L226 Difference]: Without dead ends: 2225 [2022-11-16 12:41:59,966 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-16 12:41:59,967 INFO L413 NwaCegarLoop]: 356 mSDtfsCounter, 903 mSDsluCounter, 1191 mSDsCounter, 0 mSdLazyCounter, 1814 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 919 SdHoareTripleChecker+Valid, 1547 SdHoareTripleChecker+Invalid, 1875 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 1814 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-16 12:41:59,968 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [919 Valid, 1547 Invalid, 1875 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 1814 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-16 12:41:59,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2225 states. [2022-11-16 12:42:00,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2225 to 1894. [2022-11-16 12:42:00,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1894 states, 1681 states have (on average 1.3878643664485426) internal successors, (2333), 1702 states have internal predecessors, (2333), 132 states have call successors, (132), 67 states have call predecessors, (132), 79 states have return successors, (180), 128 states have call predecessors, (180), 131 states have call successors, (180) [2022-11-16 12:42:00,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1894 states to 1894 states and 2645 transitions. [2022-11-16 12:42:00,297 INFO L78 Accepts]: Start accepts. Automaton has 1894 states and 2645 transitions. Word has length 101 [2022-11-16 12:42:00,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:42:00,298 INFO L495 AbstractCegarLoop]: Abstraction has 1894 states and 2645 transitions. [2022-11-16 12:42:00,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 12:42:00,298 INFO L276 IsEmpty]: Start isEmpty. Operand 1894 states and 2645 transitions. [2022-11-16 12:42:00,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-11-16 12:42:00,302 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:42:00,302 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:42:00,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-16 12:42:00,303 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:42:00,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:42:00,303 INFO L85 PathProgramCache]: Analyzing trace with hash 323580574, now seen corresponding path program 1 times [2022-11-16 12:42:00,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:42:00,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763869731] [2022-11-16 12:42:00,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:42:00,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:42:00,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:42:00,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-16 12:42:00,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:42:00,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-16 12:42:00,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:42:00,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-16 12:42:00,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:42:00,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-16 12:42:00,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:42:00,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-16 12:42:00,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:42:00,480 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 12:42:00,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:42:00,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763869731] [2022-11-16 12:42:00,480 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763869731] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:42:00,480 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:42:00,480 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:42:00,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462019539] [2022-11-16 12:42:00,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:42:00,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:42:00,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:42:00,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:42:00,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:42:00,485 INFO L87 Difference]: Start difference. First operand 1894 states and 2645 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 12:42:02,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:42:02,763 INFO L93 Difference]: Finished difference Result 4094 states and 6052 transitions. [2022-11-16 12:42:02,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-16 12:42:02,764 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 101 [2022-11-16 12:42:02,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:42:02,779 INFO L225 Difference]: With dead ends: 4094 [2022-11-16 12:42:02,780 INFO L226 Difference]: Without dead ends: 3161 [2022-11-16 12:42:02,783 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-16 12:42:02,785 INFO L413 NwaCegarLoop]: 356 mSDtfsCounter, 902 mSDsluCounter, 1191 mSDsCounter, 0 mSdLazyCounter, 1801 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 918 SdHoareTripleChecker+Valid, 1547 SdHoareTripleChecker+Invalid, 1862 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 1801 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-16 12:42:02,786 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [918 Valid, 1547 Invalid, 1862 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 1801 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-16 12:42:02,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3161 states. [2022-11-16 12:42:03,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3161 to 2631. [2022-11-16 12:42:03,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2631 states, 2334 states have (on average 1.4220222793487576) internal successors, (3319), 2359 states have internal predecessors, (3319), 188 states have call successors, (188), 91 states have call predecessors, (188), 107 states have return successors, (258), 188 states have call predecessors, (258), 187 states have call successors, (258) [2022-11-16 12:42:03,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2631 states to 2631 states and 3765 transitions. [2022-11-16 12:42:03,143 INFO L78 Accepts]: Start accepts. Automaton has 2631 states and 3765 transitions. Word has length 101 [2022-11-16 12:42:03,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:42:03,143 INFO L495 AbstractCegarLoop]: Abstraction has 2631 states and 3765 transitions. [2022-11-16 12:42:03,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 12:42:03,144 INFO L276 IsEmpty]: Start isEmpty. Operand 2631 states and 3765 transitions. [2022-11-16 12:42:03,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-11-16 12:42:03,147 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:42:03,148 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:42:03,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-16 12:42:03,148 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:42:03,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:42:03,149 INFO L85 PathProgramCache]: Analyzing trace with hash -818921892, now seen corresponding path program 1 times [2022-11-16 12:42:03,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:42:03,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277279199] [2022-11-16 12:42:03,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:42:03,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:42:03,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:42:03,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-16 12:42:03,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:42:03,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-16 12:42:03,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:42:03,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-16 12:42:03,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:42:03,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-16 12:42:03,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:42:03,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-16 12:42:03,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:42:03,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:42:03,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:42:03,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277279199] [2022-11-16 12:42:03,298 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277279199] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:42:03,298 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:42:03,298 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:42:03,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762691521] [2022-11-16 12:42:03,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:42:03,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:42:03,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:42:03,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:42:03,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:42:03,300 INFO L87 Difference]: Start difference. First operand 2631 states and 3765 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 12:42:06,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:42:06,315 INFO L93 Difference]: Finished difference Result 7333 states and 11008 transitions. [2022-11-16 12:42:06,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-16 12:42:06,316 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 101 [2022-11-16 12:42:06,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:42:06,342 INFO L225 Difference]: With dead ends: 7333 [2022-11-16 12:42:06,342 INFO L226 Difference]: Without dead ends: 5663 [2022-11-16 12:42:06,349 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-11-16 12:42:06,349 INFO L413 NwaCegarLoop]: 354 mSDtfsCounter, 954 mSDsluCounter, 1183 mSDsCounter, 0 mSdLazyCounter, 2130 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 969 SdHoareTripleChecker+Valid, 1537 SdHoareTripleChecker+Invalid, 2193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 2130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-16 12:42:06,350 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [969 Valid, 1537 Invalid, 2193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 2130 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-16 12:42:06,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5663 states. [2022-11-16 12:42:06,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5663 to 4088. [2022-11-16 12:42:06,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4088 states, 3631 states have (on average 1.4555218947948223) internal successors, (5285), 3664 states have internal predecessors, (5285), 292 states have call successors, (292), 139 states have call predecessors, (292), 163 states have return successors, (424), 300 states have call predecessors, (424), 291 states have call successors, (424) [2022-11-16 12:42:06,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4088 states to 4088 states and 6001 transitions. [2022-11-16 12:42:06,978 INFO L78 Accepts]: Start accepts. Automaton has 4088 states and 6001 transitions. Word has length 101 [2022-11-16 12:42:06,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:42:06,978 INFO L495 AbstractCegarLoop]: Abstraction has 4088 states and 6001 transitions. [2022-11-16 12:42:06,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 12:42:06,978 INFO L276 IsEmpty]: Start isEmpty. Operand 4088 states and 6001 transitions. [2022-11-16 12:42:06,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-11-16 12:42:06,984 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:42:06,984 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:42:06,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-16 12:42:06,984 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:42:06,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:42:06,985 INFO L85 PathProgramCache]: Analyzing trace with hash -578682146, now seen corresponding path program 1 times [2022-11-16 12:42:06,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:42:06,985 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647985915] [2022-11-16 12:42:06,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:42:06,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:42:07,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:42:07,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-16 12:42:07,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:42:07,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-16 12:42:07,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:42:07,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-16 12:42:07,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:42:07,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-16 12:42:07,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:42:07,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-16 12:42:07,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:42:07,182 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 12:42:07,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:42:07,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647985915] [2022-11-16 12:42:07,183 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647985915] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:42:07,183 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:42:07,183 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:42:07,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487888111] [2022-11-16 12:42:07,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:42:07,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:42:07,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:42:07,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:42:07,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:42:07,213 INFO L87 Difference]: Start difference. First operand 4088 states and 6001 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 12:42:08,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:42:08,757 INFO L93 Difference]: Finished difference Result 8151 states and 12358 transitions. [2022-11-16 12:42:08,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:42:08,757 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 101 [2022-11-16 12:42:08,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:42:08,778 INFO L225 Difference]: With dead ends: 8151 [2022-11-16 12:42:08,779 INFO L226 Difference]: Without dead ends: 5024 [2022-11-16 12:42:08,788 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-11-16 12:42:08,789 INFO L413 NwaCegarLoop]: 216 mSDtfsCounter, 837 mSDsluCounter, 539 mSDsCounter, 0 mSdLazyCounter, 819 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 854 SdHoareTripleChecker+Valid, 755 SdHoareTripleChecker+Invalid, 908 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 819 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-16 12:42:08,789 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [854 Valid, 755 Invalid, 908 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 819 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-16 12:42:08,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5024 states. [2022-11-16 12:42:09,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5024 to 4088. [2022-11-16 12:42:09,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4088 states, 3631 states have (on average 1.450839988983751) internal successors, (5268), 3664 states have internal predecessors, (5268), 292 states have call successors, (292), 139 states have call predecessors, (292), 163 states have return successors, (424), 300 states have call predecessors, (424), 291 states have call successors, (424) [2022-11-16 12:42:09,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4088 states to 4088 states and 5984 transitions. [2022-11-16 12:42:09,435 INFO L78 Accepts]: Start accepts. Automaton has 4088 states and 5984 transitions. Word has length 101 [2022-11-16 12:42:09,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:42:09,435 INFO L495 AbstractCegarLoop]: Abstraction has 4088 states and 5984 transitions. [2022-11-16 12:42:09,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 12:42:09,437 INFO L276 IsEmpty]: Start isEmpty. Operand 4088 states and 5984 transitions. [2022-11-16 12:42:09,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-11-16 12:42:09,444 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:42:09,444 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:42:09,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-16 12:42:09,445 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:42:09,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:42:09,445 INFO L85 PathProgramCache]: Analyzing trace with hash 260351516, now seen corresponding path program 1 times [2022-11-16 12:42:09,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:42:09,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261156981] [2022-11-16 12:42:09,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:42:09,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:42:09,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:42:09,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-16 12:42:09,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:42:09,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-16 12:42:09,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:42:09,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-16 12:42:09,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:42:09,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-16 12:42:09,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:42:09,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-16 12:42:09,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:42:09,624 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 12:42:09,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:42:09,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261156981] [2022-11-16 12:42:09,624 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261156981] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:42:09,625 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:42:09,625 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:42:09,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87167040] [2022-11-16 12:42:09,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:42:09,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:42:09,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:42:09,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:42:09,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:42:09,627 INFO L87 Difference]: Start difference. First operand 4088 states and 5984 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 12:42:11,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:42:11,296 INFO L93 Difference]: Finished difference Result 8133 states and 12271 transitions. [2022-11-16 12:42:11,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:42:11,296 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 101 [2022-11-16 12:42:11,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:42:11,327 INFO L225 Difference]: With dead ends: 8133 [2022-11-16 12:42:11,328 INFO L226 Difference]: Without dead ends: 5006 [2022-11-16 12:42:11,336 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-11-16 12:42:11,337 INFO L413 NwaCegarLoop]: 217 mSDtfsCounter, 706 mSDsluCounter, 696 mSDsCounter, 0 mSdLazyCounter, 908 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 723 SdHoareTripleChecker+Valid, 913 SdHoareTripleChecker+Invalid, 972 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 908 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-16 12:42:11,337 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [723 Valid, 913 Invalid, 972 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 908 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-16 12:42:11,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5006 states. [2022-11-16 12:42:11,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5006 to 4088. [2022-11-16 12:42:11,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4088 states, 3631 states have (on average 1.4461580831726797) internal successors, (5251), 3664 states have internal predecessors, (5251), 292 states have call successors, (292), 139 states have call predecessors, (292), 163 states have return successors, (424), 300 states have call predecessors, (424), 291 states have call successors, (424) [2022-11-16 12:42:11,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4088 states to 4088 states and 5967 transitions. [2022-11-16 12:42:11,976 INFO L78 Accepts]: Start accepts. Automaton has 4088 states and 5967 transitions. Word has length 101 [2022-11-16 12:42:11,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:42:11,977 INFO L495 AbstractCegarLoop]: Abstraction has 4088 states and 5967 transitions. [2022-11-16 12:42:11,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 12:42:11,977 INFO L276 IsEmpty]: Start isEmpty. Operand 4088 states and 5967 transitions. [2022-11-16 12:42:11,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-11-16 12:42:11,983 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:42:11,983 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:42:11,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-16 12:42:11,983 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:42:11,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:42:11,984 INFO L85 PathProgramCache]: Analyzing trace with hash 287417118, now seen corresponding path program 1 times [2022-11-16 12:42:11,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:42:11,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727431531] [2022-11-16 12:42:11,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:42:11,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:42:11,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:42:12,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-16 12:42:12,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:42:12,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-16 12:42:12,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:42:12,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-16 12:42:12,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:42:12,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-16 12:42:12,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:42:12,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-16 12:42:12,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:42:12,132 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 12:42:12,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:42:12,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727431531] [2022-11-16 12:42:12,133 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727431531] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:42:12,133 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:42:12,133 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:42:12,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272164573] [2022-11-16 12:42:12,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:42:12,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:42:12,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:42:12,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:42:12,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:42:12,135 INFO L87 Difference]: Start difference. First operand 4088 states and 5967 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 12:42:15,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:42:15,287 INFO L93 Difference]: Finished difference Result 12448 states and 18770 transitions. [2022-11-16 12:42:15,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-16 12:42:15,288 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 101 [2022-11-16 12:42:15,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:42:15,325 INFO L225 Difference]: With dead ends: 12448 [2022-11-16 12:42:15,325 INFO L226 Difference]: Without dead ends: 9321 [2022-11-16 12:42:15,337 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-11-16 12:42:15,338 INFO L413 NwaCegarLoop]: 354 mSDtfsCounter, 988 mSDsluCounter, 1183 mSDsCounter, 0 mSdLazyCounter, 1713 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1010 SdHoareTripleChecker+Valid, 1537 SdHoareTripleChecker+Invalid, 1779 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 1713 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-16 12:42:15,338 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1010 Valid, 1537 Invalid, 1779 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 1713 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-16 12:42:15,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9321 states. [2022-11-16 12:42:16,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9321 to 7027. [2022-11-16 12:42:16,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7027 states, 6258 states have (on average 1.4689996804090764) internal successors, (9193), 6307 states have internal predecessors, (9193), 492 states have call successors, (492), 235 states have call predecessors, (492), 275 states have return successors, (802), 516 states have call predecessors, (802), 491 states have call successors, (802) [2022-11-16 12:42:16,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7027 states to 7027 states and 10487 transitions. [2022-11-16 12:42:16,409 INFO L78 Accepts]: Start accepts. Automaton has 7027 states and 10487 transitions. Word has length 101 [2022-11-16 12:42:16,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:42:16,409 INFO L495 AbstractCegarLoop]: Abstraction has 7027 states and 10487 transitions. [2022-11-16 12:42:16,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 12:42:16,410 INFO L276 IsEmpty]: Start isEmpty. Operand 7027 states and 10487 transitions. [2022-11-16 12:42:16,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-11-16 12:42:16,417 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:42:16,417 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:42:16,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-16 12:42:16,417 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:42:16,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:42:16,418 INFO L85 PathProgramCache]: Analyzing trace with hash -1789919780, now seen corresponding path program 1 times [2022-11-16 12:42:16,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:42:16,418 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649046003] [2022-11-16 12:42:16,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:42:16,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:42:16,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:42:16,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-16 12:42:16,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:42:16,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-16 12:42:16,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:42:16,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-16 12:42:16,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:42:16,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-16 12:42:16,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:42:16,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-16 12:42:16,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:42:16,573 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 12:42:16,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:42:16,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649046003] [2022-11-16 12:42:16,573 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649046003] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:42:16,574 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:42:16,574 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:42:16,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990750540] [2022-11-16 12:42:16,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:42:16,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:42:16,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:42:16,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:42:16,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:42:16,576 INFO L87 Difference]: Start difference. First operand 7027 states and 10487 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 12:42:20,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:42:20,490 INFO L93 Difference]: Finished difference Result 22375 states and 34200 transitions. [2022-11-16 12:42:20,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-16 12:42:20,490 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 101 [2022-11-16 12:42:20,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:42:20,547 INFO L225 Difference]: With dead ends: 22375 [2022-11-16 12:42:20,547 INFO L226 Difference]: Without dead ends: 16309 [2022-11-16 12:42:20,566 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-11-16 12:42:20,567 INFO L413 NwaCegarLoop]: 354 mSDtfsCounter, 902 mSDsluCounter, 1183 mSDsCounter, 0 mSdLazyCounter, 1684 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 924 SdHoareTripleChecker+Valid, 1537 SdHoareTripleChecker+Invalid, 1751 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 1684 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-16 12:42:20,567 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [924 Valid, 1537 Invalid, 1751 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 1684 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-16 12:42:20,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16309 states. [2022-11-16 12:42:22,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16309 to 12917. [2022-11-16 12:42:22,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12917 states, 11540 states have (on average 1.486048526863085) internal successors, (17149), 11621 states have internal predecessors, (17149), 876 states have call successors, (876), 427 states have call predecessors, (876), 499 states have return successors, (1704), 932 states have call predecessors, (1704), 875 states have call successors, (1704) [2022-11-16 12:42:22,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12917 states to 12917 states and 19729 transitions. [2022-11-16 12:42:22,089 INFO L78 Accepts]: Start accepts. Automaton has 12917 states and 19729 transitions. Word has length 101 [2022-11-16 12:42:22,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:42:22,089 INFO L495 AbstractCegarLoop]: Abstraction has 12917 states and 19729 transitions. [2022-11-16 12:42:22,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 12:42:22,089 INFO L276 IsEmpty]: Start isEmpty. Operand 12917 states and 19729 transitions. [2022-11-16 12:42:22,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-11-16 12:42:22,100 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:42:22,100 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:42:22,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-16 12:42:22,101 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:42:22,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:42:22,101 INFO L85 PathProgramCache]: Analyzing trace with hash -902696934, now seen corresponding path program 1 times [2022-11-16 12:42:22,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:42:22,101 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116509177] [2022-11-16 12:42:22,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:42:22,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:42:22,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:42:22,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-16 12:42:22,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:42:22,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-16 12:42:22,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:42:22,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-16 12:42:22,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:42:22,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-16 12:42:22,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:42:22,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-16 12:42:22,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:42:22,239 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 12:42:22,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:42:22,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116509177] [2022-11-16 12:42:22,240 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116509177] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:42:22,240 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:42:22,240 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:42:22,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342651282] [2022-11-16 12:42:22,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:42:22,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:42:22,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:42:22,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:42:22,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:42:22,242 INFO L87 Difference]: Start difference. First operand 12917 states and 19729 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 12:42:27,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:42:27,492 INFO L93 Difference]: Finished difference Result 34200 states and 52177 transitions. [2022-11-16 12:42:27,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 12:42:27,493 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 101 [2022-11-16 12:42:27,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:42:27,588 INFO L225 Difference]: With dead ends: 34200 [2022-11-16 12:42:27,588 INFO L226 Difference]: Without dead ends: 22245 [2022-11-16 12:42:27,624 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2022-11-16 12:42:27,625 INFO L413 NwaCegarLoop]: 251 mSDtfsCounter, 611 mSDsluCounter, 969 mSDsCounter, 0 mSdLazyCounter, 1317 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 611 SdHoareTripleChecker+Valid, 1220 SdHoareTripleChecker+Invalid, 1368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 1317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:42:27,625 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [611 Valid, 1220 Invalid, 1368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 1317 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-16 12:42:27,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22245 states. [2022-11-16 12:42:29,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22245 to 13112. [2022-11-16 12:42:29,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13112 states, 11735 states have (on average 1.477971878994461) internal successors, (17344), 11816 states have internal predecessors, (17344), 876 states have call successors, (876), 427 states have call predecessors, (876), 499 states have return successors, (1704), 932 states have call predecessors, (1704), 875 states have call successors, (1704) [2022-11-16 12:42:29,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13112 states to 13112 states and 19924 transitions. [2022-11-16 12:42:29,345 INFO L78 Accepts]: Start accepts. Automaton has 13112 states and 19924 transitions. Word has length 101 [2022-11-16 12:42:29,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:42:29,346 INFO L495 AbstractCegarLoop]: Abstraction has 13112 states and 19924 transitions. [2022-11-16 12:42:29,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 12:42:29,346 INFO L276 IsEmpty]: Start isEmpty. Operand 13112 states and 19924 transitions. [2022-11-16 12:42:29,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-11-16 12:42:29,357 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:42:29,358 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:42:29,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-16 12:42:29,358 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:42:29,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:42:29,358 INFO L85 PathProgramCache]: Analyzing trace with hash 1706090524, now seen corresponding path program 1 times [2022-11-16 12:42:29,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:42:29,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442988829] [2022-11-16 12:42:29,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:42:29,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:42:29,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:42:29,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-16 12:42:29,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:42:29,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-16 12:42:29,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:42:29,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-16 12:42:29,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:42:29,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-16 12:42:29,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:42:29,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-16 12:42:29,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:42:29,522 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 12:42:29,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:42:29,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442988829] [2022-11-16 12:42:29,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442988829] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:42:29,523 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:42:29,523 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:42:29,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709354942] [2022-11-16 12:42:29,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:42:29,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:42:29,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:42:29,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:42:29,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:42:29,524 INFO L87 Difference]: Start difference. First operand 13112 states and 19924 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 12:42:40,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:42:40,561 INFO L93 Difference]: Finished difference Result 69895 states and 110267 transitions. [2022-11-16 12:42:40,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-16 12:42:40,561 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 101 [2022-11-16 12:42:40,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:42:40,790 INFO L225 Difference]: With dead ends: 69895 [2022-11-16 12:42:40,790 INFO L226 Difference]: Without dead ends: 57745 [2022-11-16 12:42:40,838 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=87, Invalid=219, Unknown=0, NotChecked=0, Total=306 [2022-11-16 12:42:40,839 INFO L413 NwaCegarLoop]: 451 mSDtfsCounter, 2055 mSDsluCounter, 896 mSDsCounter, 0 mSdLazyCounter, 1989 mSolverCounterSat, 262 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2082 SdHoareTripleChecker+Valid, 1347 SdHoareTripleChecker+Invalid, 2251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 262 IncrementalHoareTripleChecker+Valid, 1989 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-16 12:42:40,839 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2082 Valid, 1347 Invalid, 2251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [262 Valid, 1989 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-11-16 12:42:40,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57745 states. [2022-11-16 12:42:47,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57745 to 47148. [2022-11-16 12:42:47,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47148 states, 42094 states have (on average 1.4848909583313536) internal successors, (62505), 42562 states have internal predecessors, (62505), 3191 states have call successors, (3191), 1597 states have call predecessors, (3191), 1861 states have return successors, (7419), 3052 states have call predecessors, (7419), 3190 states have call successors, (7419) [2022-11-16 12:42:47,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47148 states to 47148 states and 73115 transitions. [2022-11-16 12:42:47,639 INFO L78 Accepts]: Start accepts. Automaton has 47148 states and 73115 transitions. Word has length 101 [2022-11-16 12:42:47,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:42:47,640 INFO L495 AbstractCegarLoop]: Abstraction has 47148 states and 73115 transitions. [2022-11-16 12:42:47,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 12:42:47,640 INFO L276 IsEmpty]: Start isEmpty. Operand 47148 states and 73115 transitions. [2022-11-16 12:42:47,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-11-16 12:42:47,653 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:42:47,654 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:42:47,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-16 12:42:47,654 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:42:47,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:42:47,655 INFO L85 PathProgramCache]: Analyzing trace with hash 924470242, now seen corresponding path program 1 times [2022-11-16 12:42:47,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:42:47,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967947144] [2022-11-16 12:42:47,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:42:47,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:42:47,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:42:47,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-16 12:42:47,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:42:47,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-16 12:42:47,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:42:47,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-16 12:42:47,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:42:47,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-16 12:42:47,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:42:47,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-11-16 12:42:47,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:42:47,769 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 13 proven. 10 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-16 12:42:47,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:42:47,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967947144] [2022-11-16 12:42:47,770 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967947144] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:42:47,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [935810900] [2022-11-16 12:42:47,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:42:47,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:42:47,771 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65187e84-0479-42f5-bf3f-ca5d6a91b609/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:42:47,776 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65187e84-0479-42f5-bf3f-ca5d6a91b609/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:42:47,780 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65187e84-0479-42f5-bf3f-ca5d6a91b609/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 12:42:47,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:42:47,917 INFO L263 TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-16 12:42:47,925 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:42:47,956 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-16 12:42:47,957 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:42:47,957 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [935810900] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:42:47,957 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:42:47,957 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-11-16 12:42:47,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556881879] [2022-11-16 12:42:47,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:42:47,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:42:47,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:42:47,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:42:47,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:42:47,959 INFO L87 Difference]: Start difference. First operand 47148 states and 73115 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2022-11-16 12:42:53,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:42:53,745 INFO L93 Difference]: Finished difference Result 47527 states and 73583 transitions. [2022-11-16 12:42:53,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:42:53,745 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) Word has length 103 [2022-11-16 12:42:53,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:42:53,889 INFO L225 Difference]: With dead ends: 47527 [2022-11-16 12:42:53,889 INFO L226 Difference]: Without dead ends: 46201 [2022-11-16 12:42:53,911 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:42:53,912 INFO L413 NwaCegarLoop]: 443 mSDtfsCounter, 62 mSDsluCounter, 373 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 816 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:42:53,912 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 816 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:42:53,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46201 states.