./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal20.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6b1ed89-6639-469d-bedf-85635c3a0a80/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6b1ed89-6639-469d-bedf-85635c3a0a80/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6b1ed89-6639-469d-bedf-85635c3a0a80/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6b1ed89-6639-469d-bedf-85635c3a0a80/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal20.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6b1ed89-6639-469d-bedf-85635c3a0a80/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6b1ed89-6639-469d-bedf-85635c3a0a80/bin/uautomizer-Dbtcem3rbc --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 407f079cfeef5f20438e38393e8e31b0b38db95f65d747092bdbd6427eef85bc --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-02 20:08:15,364 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:08:15,368 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:08:15,436 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:08:15,437 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:08:15,442 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:08:15,445 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:08:15,449 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:08:15,455 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:08:15,459 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:08:15,460 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:08:15,463 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:08:15,464 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:08:15,470 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:08:15,472 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:08:15,475 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:08:15,477 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:08:15,478 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:08:15,481 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:08:15,486 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:08:15,491 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:08:15,493 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:08:15,497 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:08:15,499 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:08:15,507 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:08:15,513 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:08:15,514 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:08:15,515 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:08:15,517 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:08:15,519 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:08:15,519 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:08:15,520 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:08:15,522 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:08:15,523 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:08:15,526 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:08:15,527 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:08:15,528 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:08:15,529 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:08:15,529 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:08:15,530 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:08:15,531 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:08:15,532 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6b1ed89-6639-469d-bedf-85635c3a0a80/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-02 20:08:15,587 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:08:15,588 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:08:15,589 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:08:15,589 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:08:15,590 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:08:15,590 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:08:15,591 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:08:15,592 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:08:15,592 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:08:15,592 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:08:15,594 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:08:15,594 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:08:15,594 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:08:15,595 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:08:15,595 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:08:15,595 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:08:15,595 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:08:15,596 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:08:15,596 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:08:15,596 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:08:15,596 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:08:15,597 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:08:15,597 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:08:15,597 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:08:15,598 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:08:15,598 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:08:15,598 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:08:15,598 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:08:15,599 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:08:15,599 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:08:15,601 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_a6b1ed89-6639-469d-bedf-85635c3a0a80/bin/uautomizer-Dbtcem3rbc/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6b1ed89-6639-469d-bedf-85635c3a0a80/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 407f079cfeef5f20438e38393e8e31b0b38db95f65d747092bdbd6427eef85bc [2022-11-02 20:08:15,975 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:08:16,002 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:08:16,006 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:08:16,007 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:08:16,019 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:08:16,021 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6b1ed89-6639-469d-bedf-85635c3a0a80/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal20.c [2022-11-02 20:08:16,114 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6b1ed89-6639-469d-bedf-85635c3a0a80/bin/uautomizer-Dbtcem3rbc/data/27e57efa9/27992b310ac64acb854ae570c2b23681/FLAG629cd1da7 [2022-11-02 20:08:16,988 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:08:16,989 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6b1ed89-6639-469d-bedf-85635c3a0a80/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal20.c [2022-11-02 20:08:17,009 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6b1ed89-6639-469d-bedf-85635c3a0a80/bin/uautomizer-Dbtcem3rbc/data/27e57efa9/27992b310ac64acb854ae570c2b23681/FLAG629cd1da7 [2022-11-02 20:08:17,135 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6b1ed89-6639-469d-bedf-85635c3a0a80/bin/uautomizer-Dbtcem3rbc/data/27e57efa9/27992b310ac64acb854ae570c2b23681 [2022-11-02 20:08:17,139 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:08:17,143 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:08:17,150 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:08:17,150 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:08:17,155 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:08:17,156 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:08:17" (1/1) ... [2022-11-02 20:08:17,158 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4bdb3c18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:08:17, skipping insertion in model container [2022-11-02 20:08:17,158 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:08:17" (1/1) ... [2022-11-02 20:08:17,170 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:08:17,260 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:08:17,540 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6b1ed89-6639-469d-bedf-85635c3a0a80/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal20.c[1107,1120] [2022-11-02 20:08:17,968 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:08:17,981 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:08:17,997 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6b1ed89-6639-469d-bedf-85635c3a0a80/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal20.c[1107,1120] [2022-11-02 20:08:18,214 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:08:18,227 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:08:18,228 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:08:18 WrapperNode [2022-11-02 20:08:18,228 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:08:18,229 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:08:18,230 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:08:18,230 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:08:18,249 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:08:18" (1/1) ... [2022-11-02 20:08:18,314 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:08:18" (1/1) ... [2022-11-02 20:08:18,599 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1809 [2022-11-02 20:08:18,600 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:08:18,601 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:08:18,601 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:08:18,602 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:08:18,613 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:08:18" (1/1) ... [2022-11-02 20:08:18,614 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:08:18" (1/1) ... [2022-11-02 20:08:18,667 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:08:18" (1/1) ... [2022-11-02 20:08:18,668 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:08:18" (1/1) ... [2022-11-02 20:08:18,750 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:08:18" (1/1) ... [2022-11-02 20:08:18,775 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:08:18" (1/1) ... [2022-11-02 20:08:18,803 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:08:18" (1/1) ... [2022-11-02 20:08:18,828 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:08:18" (1/1) ... [2022-11-02 20:08:18,872 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:08:18,880 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:08:18,881 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:08:18,881 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:08:18,882 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:08:18" (1/1) ... [2022-11-02 20:08:18,895 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:08:18,915 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6b1ed89-6639-469d-bedf-85635c3a0a80/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:08:18,933 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6b1ed89-6639-469d-bedf-85635c3a0a80/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:08:18,961 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6b1ed89-6639-469d-bedf-85635c3a0a80/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:08:19,002 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:08:19,002 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:08:19,580 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:08:19,583 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:08:27,038 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:08:27,049 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:08:27,049 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-02 20:08:27,052 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:08:27 BoogieIcfgContainer [2022-11-02 20:08:27,052 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:08:27,055 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:08:27,055 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:08:27,060 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:08:27,060 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:08:17" (1/3) ... [2022-11-02 20:08:27,061 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64a57fdf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:08:27, skipping insertion in model container [2022-11-02 20:08:27,061 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:08:18" (2/3) ... [2022-11-02 20:08:27,062 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64a57fdf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:08:27, skipping insertion in model container [2022-11-02 20:08:27,062 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:08:27" (3/3) ... [2022-11-02 20:08:27,064 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.cal20.c [2022-11-02 20:08:27,089 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:08:27,089 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 20:08:27,190 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:08:27,198 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;@590ff39b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:08:27,198 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 20:08:27,220 INFO L276 IsEmpty]: Start isEmpty. Operand has 209 states, 207 states have (on average 1.497584541062802) internal successors, (310), 208 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:08:27,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-02 20:08:27,243 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:08:27,244 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:08:27,244 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:08:27,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:08:27,252 INFO L85 PathProgramCache]: Analyzing trace with hash 1747459213, now seen corresponding path program 1 times [2022-11-02 20:08:27,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:08:27,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774238521] [2022-11-02 20:08:27,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:08:27,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:08:28,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:31,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:08:31,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:08:31,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774238521] [2022-11-02 20:08:31,673 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774238521] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:08:31,674 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:08:31,674 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:08:31,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836657347] [2022-11-02 20:08:31,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:08:31,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:08:31,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:08:31,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:08:31,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:08:31,726 INFO L87 Difference]: Start difference. First operand has 209 states, 207 states have (on average 1.497584541062802) internal successors, (310), 208 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:08:32,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:08:32,405 INFO L93 Difference]: Finished difference Result 702 states and 1052 transitions. [2022-11-02 20:08:32,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:08:32,419 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2022-11-02 20:08:32,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:08:32,439 INFO L225 Difference]: With dead ends: 702 [2022-11-02 20:08:32,445 INFO L226 Difference]: Without dead ends: 495 [2022-11-02 20:08:32,449 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:08:32,454 INFO L413 NwaCegarLoop]: 428 mSDtfsCounter, 514 mSDsluCounter, 597 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 514 SdHoareTripleChecker+Valid, 1025 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-02 20:08:32,455 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [514 Valid, 1025 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-02 20:08:32,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2022-11-02 20:08:32,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 293. [2022-11-02 20:08:32,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 292 states have (on average 1.4897260273972603) internal successors, (435), 292 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:08:32,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 435 transitions. [2022-11-02 20:08:32,534 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 435 transitions. Word has length 109 [2022-11-02 20:08:32,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:08:32,535 INFO L495 AbstractCegarLoop]: Abstraction has 293 states and 435 transitions. [2022-11-02 20:08:32,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:08:32,536 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 435 transitions. [2022-11-02 20:08:32,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-02 20:08:32,540 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:08:32,541 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:08:32,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:08:32,542 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:08:32,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:08:32,542 INFO L85 PathProgramCache]: Analyzing trace with hash 929810763, now seen corresponding path program 1 times [2022-11-02 20:08:32,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:08:32,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728858942] [2022-11-02 20:08:32,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:08:32,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:08:33,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:34,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:08:34,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:08:34,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728858942] [2022-11-02 20:08:34,984 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728858942] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:08:34,984 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:08:34,985 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:08:34,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85047519] [2022-11-02 20:08:34,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:08:34,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:08:34,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:08:34,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:08:34,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:08:34,989 INFO L87 Difference]: Start difference. First operand 293 states and 435 transitions. Second operand has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:08:35,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:08:35,650 INFO L93 Difference]: Finished difference Result 700 states and 1040 transitions. [2022-11-02 20:08:35,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:08:35,661 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2022-11-02 20:08:35,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:08:35,664 INFO L225 Difference]: With dead ends: 700 [2022-11-02 20:08:35,665 INFO L226 Difference]: Without dead ends: 497 [2022-11-02 20:08:35,666 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:08:35,668 INFO L413 NwaCegarLoop]: 430 mSDtfsCounter, 511 mSDsluCounter, 596 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 511 SdHoareTripleChecker+Valid, 1026 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-02 20:08:35,669 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [511 Valid, 1026 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-02 20:08:35,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 497 states. [2022-11-02 20:08:35,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 497 to 295. [2022-11-02 20:08:35,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 294 states have (on average 1.4863945578231292) internal successors, (437), 294 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:08:35,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 437 transitions. [2022-11-02 20:08:35,690 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 437 transitions. Word has length 109 [2022-11-02 20:08:35,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:08:35,691 INFO L495 AbstractCegarLoop]: Abstraction has 295 states and 437 transitions. [2022-11-02 20:08:35,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:08:35,692 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 437 transitions. [2022-11-02 20:08:35,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-02 20:08:35,694 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:08:35,695 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:08:35,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 20:08:35,696 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:08:35,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:08:35,697 INFO L85 PathProgramCache]: Analyzing trace with hash -1064333943, now seen corresponding path program 1 times [2022-11-02 20:08:35,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:08:35,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915479180] [2022-11-02 20:08:35,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:08:35,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:08:36,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:37,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:08:37,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:08:37,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915479180] [2022-11-02 20:08:37,753 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915479180] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:08:37,755 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:08:37,761 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:08:37,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54147146] [2022-11-02 20:08:37,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:08:37,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:08:37,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:08:37,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:08:37,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:08:37,766 INFO L87 Difference]: Start difference. First operand 295 states and 437 transitions. Second operand has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:08:38,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:08:38,314 INFO L93 Difference]: Finished difference Result 708 states and 1051 transitions. [2022-11-02 20:08:38,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:08:38,322 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2022-11-02 20:08:38,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:08:38,325 INFO L225 Difference]: With dead ends: 708 [2022-11-02 20:08:38,325 INFO L226 Difference]: Without dead ends: 505 [2022-11-02 20:08:38,326 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:08:38,328 INFO L413 NwaCegarLoop]: 441 mSDtfsCounter, 502 mSDsluCounter, 595 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 502 SdHoareTripleChecker+Valid, 1036 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-02 20:08:38,328 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [502 Valid, 1036 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-02 20:08:38,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 505 states. [2022-11-02 20:08:38,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 505 to 303. [2022-11-02 20:08:38,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 302 states have (on average 1.4834437086092715) internal successors, (448), 302 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:08:38,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 448 transitions. [2022-11-02 20:08:38,351 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 448 transitions. Word has length 109 [2022-11-02 20:08:38,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:08:38,352 INFO L495 AbstractCegarLoop]: Abstraction has 303 states and 448 transitions. [2022-11-02 20:08:38,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:08:38,352 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 448 transitions. [2022-11-02 20:08:38,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-02 20:08:38,354 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:08:38,355 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:08:38,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 20:08:38,356 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:08:38,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:08:38,356 INFO L85 PathProgramCache]: Analyzing trace with hash -1457360953, now seen corresponding path program 1 times [2022-11-02 20:08:38,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:08:38,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479517333] [2022-11-02 20:08:38,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:08:38,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:08:39,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:47,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:08:47,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:08:47,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479517333] [2022-11-02 20:08:47,042 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479517333] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:08:47,042 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:08:47,042 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-02 20:08:47,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202768477] [2022-11-02 20:08:47,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:08:47,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 20:08:47,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:08:47,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 20:08:47,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:08:47,045 INFO L87 Difference]: Start difference. First operand 303 states and 448 transitions. Second operand has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 9 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:08:52,317 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-02 20:08:52,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:08:52,575 INFO L93 Difference]: Finished difference Result 727 states and 1077 transitions. [2022-11-02 20:08:52,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:08:52,576 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 9 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2022-11-02 20:08:52,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:08:52,579 INFO L225 Difference]: With dead ends: 727 [2022-11-02 20:08:52,579 INFO L226 Difference]: Without dead ends: 524 [2022-11-02 20:08:52,580 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=80, Invalid=130, Unknown=0, NotChecked=0, Total=210 [2022-11-02 20:08:52,582 INFO L413 NwaCegarLoop]: 416 mSDtfsCounter, 1580 mSDsluCounter, 1076 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1580 SdHoareTripleChecker+Valid, 1492 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:08:52,582 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1580 Valid, 1492 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2022-11-02 20:08:52,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2022-11-02 20:08:52,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 315. [2022-11-02 20:08:52,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 314 states have (on average 1.4777070063694266) internal successors, (464), 314 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:08:52,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 464 transitions. [2022-11-02 20:08:52,598 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 464 transitions. Word has length 109 [2022-11-02 20:08:52,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:08:52,599 INFO L495 AbstractCegarLoop]: Abstraction has 315 states and 464 transitions. [2022-11-02 20:08:52,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 9 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:08:52,600 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 464 transitions. [2022-11-02 20:08:52,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-02 20:08:52,602 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:08:52,602 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:08:52,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-02 20:08:52,603 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:08:52,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:08:52,604 INFO L85 PathProgramCache]: Analyzing trace with hash -1400102651, now seen corresponding path program 1 times [2022-11-02 20:08:52,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:08:52,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138296132] [2022-11-02 20:08:52,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:08:52,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:09:03,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:09:08,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:09:08,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:09:08,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138296132] [2022-11-02 20:09:08,995 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138296132] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:09:08,996 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:09:08,996 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:09:08,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90530513] [2022-11-02 20:09:08,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:09:08,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:09:08,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:09:08,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:09:08,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:09:08,998 INFO L87 Difference]: Start difference. First operand 315 states and 464 transitions. Second operand has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:09:11,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:09:11,806 INFO L93 Difference]: Finished difference Result 901 states and 1327 transitions. [2022-11-02 20:09:11,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:09:11,808 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2022-11-02 20:09:11,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:09:11,811 INFO L225 Difference]: With dead ends: 901 [2022-11-02 20:09:11,811 INFO L226 Difference]: Without dead ends: 628 [2022-11-02 20:09:11,813 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=58, Invalid=98, Unknown=0, NotChecked=0, Total=156 [2022-11-02 20:09:11,814 INFO L413 NwaCegarLoop]: 350 mSDtfsCounter, 1752 mSDsluCounter, 745 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1752 SdHoareTripleChecker+Valid, 1095 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-02 20:09:11,815 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1752 Valid, 1095 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-11-02 20:09:11,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2022-11-02 20:09:11,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 343. [2022-11-02 20:09:11,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 342 states have (on average 1.4736842105263157) internal successors, (504), 342 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:09:11,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 504 transitions. [2022-11-02 20:09:11,833 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 504 transitions. Word has length 109 [2022-11-02 20:09:11,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:09:11,834 INFO L495 AbstractCegarLoop]: Abstraction has 343 states and 504 transitions. [2022-11-02 20:09:11,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:09:11,835 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 504 transitions. [2022-11-02 20:09:11,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-02 20:09:11,837 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:09:11,838 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:09:11,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-02 20:09:11,838 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:09:11,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:09:11,839 INFO L85 PathProgramCache]: Analyzing trace with hash -446162493, now seen corresponding path program 1 times [2022-11-02 20:09:11,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:09:11,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134689851] [2022-11-02 20:09:11,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:09:11,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:09:18,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:09:23,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:09:23,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:09:23,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134689851] [2022-11-02 20:09:23,364 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134689851] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:09:23,364 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:09:23,364 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-02 20:09:23,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151152703] [2022-11-02 20:09:23,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:09:23,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-02 20:09:23,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:09:23,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-02 20:09:23,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2022-11-02 20:09:23,366 INFO L87 Difference]: Start difference. First operand 343 states and 504 transitions. Second operand has 15 states, 15 states have (on average 7.266666666666667) internal successors, (109), 15 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:09:35,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:09:35,768 INFO L93 Difference]: Finished difference Result 2530 states and 3722 transitions. [2022-11-02 20:09:35,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-11-02 20:09:35,769 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 7.266666666666667) internal successors, (109), 15 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2022-11-02 20:09:35,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:09:35,779 INFO L225 Difference]: With dead ends: 2530 [2022-11-02 20:09:35,780 INFO L226 Difference]: Without dead ends: 2295 [2022-11-02 20:09:35,783 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 909 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=843, Invalid=2579, Unknown=0, NotChecked=0, Total=3422 [2022-11-02 20:09:35,785 INFO L413 NwaCegarLoop]: 378 mSDtfsCounter, 10191 mSDsluCounter, 4414 mSDsCounter, 0 mSdLazyCounter, 687 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10191 SdHoareTripleChecker+Valid, 4792 SdHoareTripleChecker+Invalid, 796 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 687 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2022-11-02 20:09:35,785 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10191 Valid, 4792 Invalid, 796 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 687 Invalid, 0 Unknown, 0 Unchecked, 7.8s Time] [2022-11-02 20:09:35,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2295 states. [2022-11-02 20:09:35,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2295 to 694. [2022-11-02 20:09:35,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 694 states, 693 states have (on average 1.4733044733044733) internal successors, (1021), 693 states have internal predecessors, (1021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:09:35,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 694 states to 694 states and 1021 transitions. [2022-11-02 20:09:35,823 INFO L78 Accepts]: Start accepts. Automaton has 694 states and 1021 transitions. Word has length 109 [2022-11-02 20:09:35,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:09:35,824 INFO L495 AbstractCegarLoop]: Abstraction has 694 states and 1021 transitions. [2022-11-02 20:09:35,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 7.266666666666667) internal successors, (109), 15 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:09:35,824 INFO L276 IsEmpty]: Start isEmpty. Operand 694 states and 1021 transitions. [2022-11-02 20:09:35,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-02 20:09:35,826 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:09:35,827 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:09:35,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-02 20:09:35,827 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:09:35,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:09:35,828 INFO L85 PathProgramCache]: Analyzing trace with hash -1467230847, now seen corresponding path program 1 times [2022-11-02 20:09:35,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:09:35,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914928719] [2022-11-02 20:09:35,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:09:35,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:09:36,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:09:40,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:09:40,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:09:40,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914928719] [2022-11-02 20:09:40,866 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914928719] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:09:40,867 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:09:40,867 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-02 20:09:40,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443421002] [2022-11-02 20:09:40,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:09:40,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 20:09:40,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:09:40,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 20:09:40,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:09:40,870 INFO L87 Difference]: Start difference. First operand 694 states and 1021 transitions. Second operand has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 9 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:09:42,710 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-02 20:09:45,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:09:45,406 INFO L93 Difference]: Finished difference Result 1578 states and 2320 transitions. [2022-11-02 20:09:45,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-02 20:09:45,407 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 9 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2022-11-02 20:09:45,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:09:45,412 INFO L225 Difference]: With dead ends: 1578 [2022-11-02 20:09:45,413 INFO L226 Difference]: Without dead ends: 1102 [2022-11-02 20:09:45,417 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=132, Invalid=248, Unknown=0, NotChecked=0, Total=380 [2022-11-02 20:09:45,422 INFO L413 NwaCegarLoop]: 420 mSDtfsCounter, 3898 mSDsluCounter, 1276 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3898 SdHoareTripleChecker+Valid, 1696 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:09:45,423 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3898 Valid, 1696 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-11-02 20:09:45,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1102 states. [2022-11-02 20:09:45,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1102 to 718. [2022-11-02 20:09:45,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 718 states, 717 states have (on average 1.4658298465829847) internal successors, (1051), 717 states have internal predecessors, (1051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:09:45,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 718 states to 718 states and 1051 transitions. [2022-11-02 20:09:45,458 INFO L78 Accepts]: Start accepts. Automaton has 718 states and 1051 transitions. Word has length 109 [2022-11-02 20:09:45,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:09:45,459 INFO L495 AbstractCegarLoop]: Abstraction has 718 states and 1051 transitions. [2022-11-02 20:09:45,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 9 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:09:45,459 INFO L276 IsEmpty]: Start isEmpty. Operand 718 states and 1051 transitions. [2022-11-02 20:09:45,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-02 20:09:45,462 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:09:45,462 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:09:45,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-02 20:09:45,462 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:09:45,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:09:45,463 INFO L85 PathProgramCache]: Analyzing trace with hash 2018389823, now seen corresponding path program 1 times [2022-11-02 20:09:45,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:09:45,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827285432] [2022-11-02 20:09:45,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:09:45,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:09:49,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:09:52,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:09:52,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:09:52,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827285432] [2022-11-02 20:09:52,640 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827285432] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:09:52,640 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:09:52,640 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 20:09:52,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477109631] [2022-11-02 20:09:52,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:09:52,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 20:09:52,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:09:52,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 20:09:52,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:09:52,642 INFO L87 Difference]: Start difference. First operand 718 states and 1051 transitions. Second operand has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:09:55,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:09:55,423 INFO L93 Difference]: Finished difference Result 2014 states and 2941 transitions. [2022-11-02 20:09:55,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-02 20:09:55,424 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2022-11-02 20:09:55,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:09:55,430 INFO L225 Difference]: With dead ends: 2014 [2022-11-02 20:09:55,430 INFO L226 Difference]: Without dead ends: 1436 [2022-11-02 20:09:55,432 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=92, Invalid=180, Unknown=0, NotChecked=0, Total=272 [2022-11-02 20:09:55,433 INFO L413 NwaCegarLoop]: 369 mSDtfsCounter, 2172 mSDsluCounter, 1017 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2172 SdHoareTripleChecker+Valid, 1386 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-02 20:09:55,433 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2172 Valid, 1386 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-11-02 20:09:55,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1436 states. [2022-11-02 20:09:55,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1436 to 814. [2022-11-02 20:09:55,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 814 states, 813 states have (on average 1.4600246002460024) internal successors, (1187), 813 states have internal predecessors, (1187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:09:55,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 814 states to 814 states and 1187 transitions. [2022-11-02 20:09:55,465 INFO L78 Accepts]: Start accepts. Automaton has 814 states and 1187 transitions. Word has length 109 [2022-11-02 20:09:55,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:09:55,466 INFO L495 AbstractCegarLoop]: Abstraction has 814 states and 1187 transitions. [2022-11-02 20:09:55,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:09:55,466 INFO L276 IsEmpty]: Start isEmpty. Operand 814 states and 1187 transitions. [2022-11-02 20:09:55,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-02 20:09:55,468 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:09:55,468 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:09:55,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-02 20:09:55,469 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:09:55,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:09:55,470 INFO L85 PathProgramCache]: Analyzing trace with hash -738237443, now seen corresponding path program 1 times [2022-11-02 20:09:55,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:09:55,470 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959538245] [2022-11-02 20:09:55,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:09:55,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:09:58,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:10:04,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:10:04,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:10:04,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959538245] [2022-11-02 20:10:04,388 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959538245] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:10:04,388 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:10:04,388 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:10:04,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39132285] [2022-11-02 20:10:04,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:10:04,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:10:04,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:10:04,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:10:04,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:10:04,390 INFO L87 Difference]: Start difference. First operand 814 states and 1187 transitions. Second operand has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:10:05,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:10:05,417 INFO L93 Difference]: Finished difference Result 2275 states and 3318 transitions. [2022-11-02 20:10:05,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:10:05,419 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2022-11-02 20:10:05,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:10:05,425 INFO L225 Difference]: With dead ends: 2275 [2022-11-02 20:10:05,425 INFO L226 Difference]: Without dead ends: 1477 [2022-11-02 20:10:05,427 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=58, Invalid=98, Unknown=0, NotChecked=0, Total=156 [2022-11-02 20:10:05,430 INFO L413 NwaCegarLoop]: 302 mSDtfsCounter, 2362 mSDsluCounter, 599 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2362 SdHoareTripleChecker+Valid, 901 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-02 20:10:05,431 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2362 Valid, 901 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-02 20:10:05,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1477 states. [2022-11-02 20:10:05,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1477 to 820. [2022-11-02 20:10:05,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 820 states, 819 states have (on average 1.4542124542124542) internal successors, (1191), 819 states have internal predecessors, (1191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:10:05,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 820 states to 820 states and 1191 transitions. [2022-11-02 20:10:05,465 INFO L78 Accepts]: Start accepts. Automaton has 820 states and 1191 transitions. Word has length 109 [2022-11-02 20:10:05,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:10:05,466 INFO L495 AbstractCegarLoop]: Abstraction has 820 states and 1191 transitions. [2022-11-02 20:10:05,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:10:05,466 INFO L276 IsEmpty]: Start isEmpty. Operand 820 states and 1191 transitions. [2022-11-02 20:10:05,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-02 20:10:05,468 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:10:05,469 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:10:05,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-02 20:10:05,469 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:10:05,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:10:05,476 INFO L85 PathProgramCache]: Analyzing trace with hash 1159259323, now seen corresponding path program 1 times [2022-11-02 20:10:05,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:10:05,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402425453] [2022-11-02 20:10:05,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:10:05,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:10:09,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:10:17,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:10:17,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:10:17,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402425453] [2022-11-02 20:10:17,820 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402425453] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:10:17,820 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:10:17,820 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-02 20:10:17,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148386045] [2022-11-02 20:10:17,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:10:17,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:10:17,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:10:17,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:10:17,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:10:17,822 INFO L87 Difference]: Start difference. First operand 820 states and 1191 transitions. Second operand has 10 states, 10 states have (on average 10.9) internal successors, (109), 10 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:10:22,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:10:22,086 INFO L93 Difference]: Finished difference Result 2896 states and 4202 transitions. [2022-11-02 20:10:22,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-02 20:10:22,087 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.9) internal successors, (109), 10 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2022-11-02 20:10:22,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:10:22,092 INFO L225 Difference]: With dead ends: 2896 [2022-11-02 20:10:22,093 INFO L226 Difference]: Without dead ends: 2302 [2022-11-02 20:10:22,094 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=116, Invalid=226, Unknown=0, NotChecked=0, Total=342 [2022-11-02 20:10:22,095 INFO L413 NwaCegarLoop]: 381 mSDtfsCounter, 4010 mSDsluCounter, 1548 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4010 SdHoareTripleChecker+Valid, 1929 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-11-02 20:10:22,096 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4010 Valid, 1929 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-11-02 20:10:22,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2302 states. [2022-11-02 20:10:22,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2302 to 1540. [2022-11-02 20:10:22,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1540 states, 1539 states have (on average 1.450942170240416) internal successors, (2233), 1539 states have internal predecessors, (2233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:10:22,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1540 states to 1540 states and 2233 transitions. [2022-11-02 20:10:22,154 INFO L78 Accepts]: Start accepts. Automaton has 1540 states and 2233 transitions. Word has length 109 [2022-11-02 20:10:22,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:10:22,155 INFO L495 AbstractCegarLoop]: Abstraction has 1540 states and 2233 transitions. [2022-11-02 20:10:22,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.9) internal successors, (109), 10 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:10:22,155 INFO L276 IsEmpty]: Start isEmpty. Operand 1540 states and 2233 transitions. [2022-11-02 20:10:22,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-02 20:10:22,158 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:10:22,158 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:10:22,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-02 20:10:22,159 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:10:22,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:10:22,159 INFO L85 PathProgramCache]: Analyzing trace with hash -1084723975, now seen corresponding path program 1 times [2022-11-02 20:10:22,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:10:22,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275045572] [2022-11-02 20:10:22,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:10:22,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:10:23,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:10:28,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:10:28,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:10:28,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275045572] [2022-11-02 20:10:28,220 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275045572] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:10:28,220 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:10:28,220 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:10:28,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770991961] [2022-11-02 20:10:28,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:10:28,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:10:28,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:10:28,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:10:28,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:10:28,223 INFO L87 Difference]: Start difference. First operand 1540 states and 2233 transitions. Second operand has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:10:31,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:10:31,542 INFO L93 Difference]: Finished difference Result 3488 states and 5051 transitions. [2022-11-02 20:10:31,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:10:31,543 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2022-11-02 20:10:31,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:10:31,553 INFO L225 Difference]: With dead ends: 3488 [2022-11-02 20:10:31,554 INFO L226 Difference]: Without dead ends: 2280 [2022-11-02 20:10:31,556 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:10:31,557 INFO L413 NwaCegarLoop]: 661 mSDtfsCounter, 1140 mSDsluCounter, 859 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1140 SdHoareTripleChecker+Valid, 1520 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:10:31,558 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1140 Valid, 1520 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-11-02 20:10:31,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2280 states. [2022-11-02 20:10:31,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2280 to 1556. [2022-11-02 20:10:31,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1556 states, 1555 states have (on average 1.4463022508038585) internal successors, (2249), 1555 states have internal predecessors, (2249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:10:31,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1556 states to 1556 states and 2249 transitions. [2022-11-02 20:10:31,651 INFO L78 Accepts]: Start accepts. Automaton has 1556 states and 2249 transitions. Word has length 109 [2022-11-02 20:10:31,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:10:31,652 INFO L495 AbstractCegarLoop]: Abstraction has 1556 states and 2249 transitions. [2022-11-02 20:10:31,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:10:31,652 INFO L276 IsEmpty]: Start isEmpty. Operand 1556 states and 2249 transitions. [2022-11-02 20:10:31,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-02 20:10:31,655 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:10:31,655 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:10:31,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-02 20:10:31,655 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:10:31,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:10:31,656 INFO L85 PathProgramCache]: Analyzing trace with hash -2114083273, now seen corresponding path program 1 times [2022-11-02 20:10:31,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:10:31,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486267821] [2022-11-02 20:10:31,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:10:31,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:10:38,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:10:43,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:10:43,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:10:43,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486267821] [2022-11-02 20:10:43,757 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486267821] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:10:43,757 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:10:43,757 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:10:43,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983332838] [2022-11-02 20:10:43,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:10:43,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:10:43,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:10:43,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:10:43,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:10:43,758 INFO L87 Difference]: Start difference. First operand 1556 states and 2249 transitions. Second operand has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:10:45,852 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-02 20:10:47,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:10:47,302 INFO L93 Difference]: Finished difference Result 4210 states and 6091 transitions. [2022-11-02 20:10:47,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:10:47,302 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2022-11-02 20:10:47,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:10:47,313 INFO L225 Difference]: With dead ends: 4210 [2022-11-02 20:10:47,313 INFO L226 Difference]: Without dead ends: 2840 [2022-11-02 20:10:47,316 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=58, Invalid=98, Unknown=0, NotChecked=0, Total=156 [2022-11-02 20:10:47,317 INFO L413 NwaCegarLoop]: 356 mSDtfsCounter, 2303 mSDsluCounter, 707 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2303 SdHoareTripleChecker+Valid, 1063 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:10:47,317 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2303 Valid, 1063 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-11-02 20:10:47,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2840 states. [2022-11-02 20:10:47,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2840 to 1604. [2022-11-02 20:10:47,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1604 states, 1603 states have (on average 1.4379288833437305) internal successors, (2305), 1603 states have internal predecessors, (2305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:10:47,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1604 states to 1604 states and 2305 transitions. [2022-11-02 20:10:47,382 INFO L78 Accepts]: Start accepts. Automaton has 1604 states and 2305 transitions. Word has length 109 [2022-11-02 20:10:47,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:10:47,383 INFO L495 AbstractCegarLoop]: Abstraction has 1604 states and 2305 transitions. [2022-11-02 20:10:47,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:10:47,383 INFO L276 IsEmpty]: Start isEmpty. Operand 1604 states and 2305 transitions. [2022-11-02 20:10:47,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-02 20:10:47,386 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:10:47,386 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:10:47,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-02 20:10:47,386 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:10:47,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:10:47,387 INFO L85 PathProgramCache]: Analyzing trace with hash 2126491125, now seen corresponding path program 1 times [2022-11-02 20:10:47,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:10:47,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200739329] [2022-11-02 20:10:47,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:10:47,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:10:49,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:10:57,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:10:57,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:10:57,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200739329] [2022-11-02 20:10:57,474 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200739329] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:10:57,474 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:10:57,475 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:10:57,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856245591] [2022-11-02 20:10:57,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:10:57,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:10:57,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:10:57,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:10:57,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:10:57,477 INFO L87 Difference]: Start difference. First operand 1604 states and 2305 transitions. Second operand has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:11:02,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:11:02,166 INFO L93 Difference]: Finished difference Result 2224 states and 3199 transitions. [2022-11-02 20:11:02,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:11:02,167 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2022-11-02 20:11:02,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:11:02,172 INFO L225 Difference]: With dead ends: 2224 [2022-11-02 20:11:02,172 INFO L226 Difference]: Without dead ends: 1486 [2022-11-02 20:11:02,173 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=98, Unknown=0, NotChecked=0, Total=156 [2022-11-02 20:11:02,175 INFO L413 NwaCegarLoop]: 318 mSDtfsCounter, 2006 mSDsluCounter, 649 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2006 SdHoareTripleChecker+Valid, 967 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:11:02,175 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2006 Valid, 967 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2022-11-02 20:11:02,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1486 states. [2022-11-02 20:11:02,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1486 to 868. [2022-11-02 20:11:02,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 868 states, 867 states have (on average 1.4382929642445212) internal successors, (1247), 867 states have internal predecessors, (1247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:11:02,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 868 states to 868 states and 1247 transitions. [2022-11-02 20:11:02,212 INFO L78 Accepts]: Start accepts. Automaton has 868 states and 1247 transitions. Word has length 109 [2022-11-02 20:11:02,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:11:02,212 INFO L495 AbstractCegarLoop]: Abstraction has 868 states and 1247 transitions. [2022-11-02 20:11:02,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:11:02,213 INFO L276 IsEmpty]: Start isEmpty. Operand 868 states and 1247 transitions. [2022-11-02 20:11:02,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-02 20:11:02,214 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:11:02,215 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:11:02,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-02 20:11:02,215 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:11:02,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:11:02,216 INFO L85 PathProgramCache]: Analyzing trace with hash 265832763, now seen corresponding path program 1 times [2022-11-02 20:11:02,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:11:02,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520140491] [2022-11-02 20:11:02,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:11:02,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:11:06,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:11:18,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:11:18,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:11:18,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520140491] [2022-11-02 20:11:18,385 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520140491] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:11:18,385 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:11:18,385 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 20:11:18,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518877755] [2022-11-02 20:11:18,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:11:18,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 20:11:18,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:11:18,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 20:11:18,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:11:18,387 INFO L87 Difference]: Start difference. First operand 868 states and 1247 transitions. Second operand has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:11:22,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:11:22,023 INFO L93 Difference]: Finished difference Result 3298 states and 4745 transitions. [2022-11-02 20:11:22,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 20:11:22,024 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2022-11-02 20:11:22,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:11:22,032 INFO L225 Difference]: With dead ends: 3298 [2022-11-02 20:11:22,032 INFO L226 Difference]: Without dead ends: 2468 [2022-11-02 20:11:22,034 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=87, Invalid=153, Unknown=0, NotChecked=0, Total=240 [2022-11-02 20:11:22,035 INFO L413 NwaCegarLoop]: 311 mSDtfsCounter, 3536 mSDsluCounter, 1213 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3536 SdHoareTripleChecker+Valid, 1524 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:11:22,036 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3536 Valid, 1524 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-11-02 20:11:22,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2468 states. [2022-11-02 20:11:22,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2468 to 924. [2022-11-02 20:11:22,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 924 states, 923 states have (on average 1.4366197183098592) internal successors, (1326), 923 states have internal predecessors, (1326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:11:22,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 924 states to 924 states and 1326 transitions. [2022-11-02 20:11:22,076 INFO L78 Accepts]: Start accepts. Automaton has 924 states and 1326 transitions. Word has length 109 [2022-11-02 20:11:22,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:11:22,077 INFO L495 AbstractCegarLoop]: Abstraction has 924 states and 1326 transitions. [2022-11-02 20:11:22,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:11:22,077 INFO L276 IsEmpty]: Start isEmpty. Operand 924 states and 1326 transitions. [2022-11-02 20:11:22,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-02 20:11:22,079 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:11:22,079 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:11:22,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-02 20:11:22,080 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:11:22,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:11:22,080 INFO L85 PathProgramCache]: Analyzing trace with hash 2142895993, now seen corresponding path program 1 times [2022-11-02 20:11:22,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:11:22,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064156342] [2022-11-02 20:11:22,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:11:22,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:11:27,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:11:32,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:11:32,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:11:32,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064156342] [2022-11-02 20:11:32,844 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064156342] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:11:32,844 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:11:32,845 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-02 20:11:32,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171405400] [2022-11-02 20:11:32,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:11:32,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-02 20:11:32,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:11:32,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-02 20:11:32,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-11-02 20:11:32,847 INFO L87 Difference]: Start difference. First operand 924 states and 1326 transitions. Second operand has 14 states, 14 states have (on average 7.785714285714286) internal successors, (109), 14 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)