./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.train-gate.4.prop1-back-serstep.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9aa866e-f9da-4e70-b1a3-ba09fadf1970/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9aa866e-f9da-4e70-b1a3-ba09fadf1970/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9aa866e-f9da-4e70-b1a3-ba09fadf1970/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9aa866e-f9da-4e70-b1a3-ba09fadf1970/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.train-gate.4.prop1-back-serstep.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9aa866e-f9da-4e70-b1a3-ba09fadf1970/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9aa866e-f9da-4e70-b1a3-ba09fadf1970/bin/uautomizer-tPACEb0tL8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 2bedabf9da912e74ecbc6dbab46ef1378d8a6db48cb084dcd5e9d59e252a2d0d --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 11:22:21,371 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:22:21,374 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:22:21,403 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:22:21,410 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:22:21,415 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:22:21,419 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:22:21,429 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:22:21,431 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:22:21,433 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:22:21,435 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:22:21,437 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:22:21,438 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:22:21,443 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:22:21,445 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:22:21,447 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:22:21,452 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:22:21,459 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:22:21,461 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:22:21,463 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:22:21,470 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:22:21,472 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:22:21,474 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:22:21,475 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:22:21,480 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:22:21,488 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:22:21,488 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:22:21,489 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:22:21,490 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:22:21,491 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:22:21,493 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:22:21,494 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:22:21,496 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:22:21,498 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:22:21,500 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:22:21,501 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:22:21,502 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:22:21,502 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:22:21,502 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:22:21,504 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:22:21,505 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:22:21,506 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9aa866e-f9da-4e70-b1a3-ba09fadf1970/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-16 11:22:21,554 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:22:21,558 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:22:21,559 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:22:21,559 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:22:21,560 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:22:21,560 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:22:21,561 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:22:21,561 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:22:21,562 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:22:21,562 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:22:21,563 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 11:22:21,564 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:22:21,564 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 11:22:21,564 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:22:21,565 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 11:22:21,565 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 11:22:21,565 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:22:21,565 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 11:22:21,566 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:22:21,566 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:22:21,566 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:22:21,566 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:22:21,567 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:22:21,567 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:22:21,567 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 11:22:21,568 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 11:22:21,568 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 11:22:21,570 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 11:22:21,570 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 11:22:21,571 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 11:22:21,571 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_f9aa866e-f9da-4e70-b1a3-ba09fadf1970/bin/uautomizer-tPACEb0tL8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9aa866e-f9da-4e70-b1a3-ba09fadf1970/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2bedabf9da912e74ecbc6dbab46ef1378d8a6db48cb084dcd5e9d59e252a2d0d [2022-11-16 11:22:21,997 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:22:22,038 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:22:22,042 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:22:22,044 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:22:22,045 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:22:22,046 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9aa866e-f9da-4e70-b1a3-ba09fadf1970/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.train-gate.4.prop1-back-serstep.c [2022-11-16 11:22:22,120 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9aa866e-f9da-4e70-b1a3-ba09fadf1970/bin/uautomizer-tPACEb0tL8/data/cabdbdf4c/17805967cc7947409e633be9343fa8c4/FLAG3f4cf7db0 [2022-11-16 11:22:23,073 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:22:23,073 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9aa866e-f9da-4e70-b1a3-ba09fadf1970/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.train-gate.4.prop1-back-serstep.c [2022-11-16 11:22:23,114 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9aa866e-f9da-4e70-b1a3-ba09fadf1970/bin/uautomizer-tPACEb0tL8/data/cabdbdf4c/17805967cc7947409e633be9343fa8c4/FLAG3f4cf7db0 [2022-11-16 11:22:23,534 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9aa866e-f9da-4e70-b1a3-ba09fadf1970/bin/uautomizer-tPACEb0tL8/data/cabdbdf4c/17805967cc7947409e633be9343fa8c4 [2022-11-16 11:22:23,537 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:22:23,541 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:22:23,546 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:22:23,547 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:22:23,551 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:22:23,552 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:22:23" (1/1) ... [2022-11-16 11:22:23,553 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@644012ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:22:23, skipping insertion in model container [2022-11-16 11:22:23,554 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:22:23" (1/1) ... [2022-11-16 11:22:23,563 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:22:23,716 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:22:24,042 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9aa866e-f9da-4e70-b1a3-ba09fadf1970/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.train-gate.4.prop1-back-serstep.c[1014,1027] [2022-11-16 11:22:24,926 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:22:24,931 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:22:24,957 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9aa866e-f9da-4e70-b1a3-ba09fadf1970/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.train-gate.4.prop1-back-serstep.c[1014,1027] [2022-11-16 11:22:25,357 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:22:25,373 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:22:25,374 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:22:25 WrapperNode [2022-11-16 11:22:25,376 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:22:25,377 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:22:25,378 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:22:25,378 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:22:25,389 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:22:25" (1/1) ... [2022-11-16 11:22:25,516 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:22:25" (1/1) ... [2022-11-16 11:22:25,989 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 7872 [2022-11-16 11:22:25,989 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:22:25,990 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:22:25,990 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:22:25,990 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:22:26,002 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:22:25" (1/1) ... [2022-11-16 11:22:26,002 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:22:25" (1/1) ... [2022-11-16 11:22:26,062 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:22:25" (1/1) ... [2022-11-16 11:22:26,063 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:22:25" (1/1) ... [2022-11-16 11:22:26,340 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:22:25" (1/1) ... [2022-11-16 11:22:26,382 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:22:25" (1/1) ... [2022-11-16 11:22:26,428 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:22:25" (1/1) ... [2022-11-16 11:22:26,454 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:22:25" (1/1) ... [2022-11-16 11:22:26,529 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:22:26,530 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:22:26,530 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:22:26,531 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:22:26,532 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:22:25" (1/1) ... [2022-11-16 11:22:26,541 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:22:26,554 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9aa866e-f9da-4e70-b1a3-ba09fadf1970/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:22:26,574 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9aa866e-f9da-4e70-b1a3-ba09fadf1970/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 11:22:26,608 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9aa866e-f9da-4e70-b1a3-ba09fadf1970/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 11:22:26,641 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:22:26,641 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:22:27,944 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:22:27,947 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:22:39,112 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:22:39,142 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:22:39,142 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-16 11:22:39,148 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:22:39 BoogieIcfgContainer [2022-11-16 11:22:39,148 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:22:39,152 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 11:22:39,153 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 11:22:39,157 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 11:22:39,157 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:22:23" (1/3) ... [2022-11-16 11:22:39,158 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49efd17c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:22:39, skipping insertion in model container [2022-11-16 11:22:39,159 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:22:25" (2/3) ... [2022-11-16 11:22:39,159 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49efd17c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:22:39, skipping insertion in model container [2022-11-16 11:22:39,159 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:22:39" (3/3) ... [2022-11-16 11:22:39,161 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.train-gate.4.prop1-back-serstep.c [2022-11-16 11:22:39,191 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 11:22:39,191 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 11:22:39,286 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:22:39,294 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;@948e744, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:22:39,294 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-16 11:22:39,306 INFO L276 IsEmpty]: Start isEmpty. Operand has 1349 states, 1347 states have (on average 1.6651818856718634) internal successors, (2243), 1348 states have internal predecessors, (2243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:22:39,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2022-11-16 11:22:39,331 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:22:39,332 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:22:39,333 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:22:39,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:22:39,340 INFO L85 PathProgramCache]: Analyzing trace with hash 1983780285, now seen corresponding path program 1 times [2022-11-16 11:22:39,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:22:39,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351170700] [2022-11-16 11:22:39,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:22:39,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:22:39,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:22:41,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:22:41,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:22:41,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351170700] [2022-11-16 11:22:41,951 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351170700] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:22:41,951 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:22:41,952 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:22:41,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851506279] [2022-11-16 11:22:41,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:22:41,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:22:41,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:22:42,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:22:42,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:22:42,012 INFO L87 Difference]: Start difference. First operand has 1349 states, 1347 states have (on average 1.6651818856718634) internal successors, (2243), 1348 states have internal predecessors, (2243), 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 75.25) internal successors, (301), 4 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:22:43,243 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-16 11:22:45,262 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.83s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-16 11:22:45,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:22:45,290 INFO L93 Difference]: Finished difference Result 4477 states and 7457 transitions. [2022-11-16 11:22:45,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:22:45,293 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 75.25) internal successors, (301), 4 states have internal predecessors, (301), 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 301 [2022-11-16 11:22:45,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:22:45,377 INFO L225 Difference]: With dead ends: 4477 [2022-11-16 11:22:45,392 INFO L226 Difference]: Without dead ends: 3130 [2022-11-16 11:22:45,402 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:22:45,405 INFO L413 NwaCegarLoop]: 2975 mSDtfsCounter, 6687 mSDsluCounter, 3708 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6687 SdHoareTripleChecker+Valid, 6683 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:22:45,421 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6687 Valid, 6683 Invalid, 18 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-11-16 11:22:45,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3130 states. [2022-11-16 11:22:45,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3130 to 1347. [2022-11-16 11:22:45,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1347 states, 1346 states have (on average 1.6634472511144132) internal successors, (2239), 1346 states have internal predecessors, (2239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:22:45,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1347 states to 1347 states and 2239 transitions. [2022-11-16 11:22:45,655 INFO L78 Accepts]: Start accepts. Automaton has 1347 states and 2239 transitions. Word has length 301 [2022-11-16 11:22:45,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:22:45,660 INFO L495 AbstractCegarLoop]: Abstraction has 1347 states and 2239 transitions. [2022-11-16 11:22:45,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 75.25) internal successors, (301), 4 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:22:45,661 INFO L276 IsEmpty]: Start isEmpty. Operand 1347 states and 2239 transitions. [2022-11-16 11:22:45,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2022-11-16 11:22:45,668 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:22:45,668 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:22:45,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 11:22:45,680 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:22:45,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:22:45,685 INFO L85 PathProgramCache]: Analyzing trace with hash 1369373415, now seen corresponding path program 1 times [2022-11-16 11:22:45,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:22:45,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741664135] [2022-11-16 11:22:45,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:22:45,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:22:45,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:22:47,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:22:47,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:22:47,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741664135] [2022-11-16 11:22:47,892 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741664135] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:22:47,893 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:22:47,893 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:22:47,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263452025] [2022-11-16 11:22:47,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:22:47,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:22:47,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:22:47,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:22:47,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:22:47,898 INFO L87 Difference]: Start difference. First operand 1347 states and 2239 transitions. Second operand has 4 states, 4 states have (on average 75.5) internal successors, (302), 4 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:22:51,353 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-16 11:22:51,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:22:51,453 INFO L93 Difference]: Finished difference Result 5369 states and 8934 transitions. [2022-11-16 11:22:51,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:22:51,454 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 75.5) internal successors, (302), 4 states have internal predecessors, (302), 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 302 [2022-11-16 11:22:51,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:22:51,472 INFO L225 Difference]: With dead ends: 5369 [2022-11-16 11:22:51,473 INFO L226 Difference]: Without dead ends: 4024 [2022-11-16 11:22:51,478 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 [2022-11-16 11:22:51,479 INFO L413 NwaCegarLoop]: 2969 mSDtfsCounter, 5656 mSDsluCounter, 4463 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5656 SdHoareTripleChecker+Valid, 7432 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-11-16 11:22:51,480 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5656 Valid, 7432 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 12 Invalid, 1 Unknown, 0 Unchecked, 3.4s Time] [2022-11-16 11:22:51,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4024 states. [2022-11-16 11:22:51,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4024 to 1790. [2022-11-16 11:22:51,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1790 states, 1789 states have (on average 1.6634991615427612) internal successors, (2976), 1789 states have internal predecessors, (2976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:22:51,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1790 states to 1790 states and 2976 transitions. [2022-11-16 11:22:51,553 INFO L78 Accepts]: Start accepts. Automaton has 1790 states and 2976 transitions. Word has length 302 [2022-11-16 11:22:51,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:22:51,554 INFO L495 AbstractCegarLoop]: Abstraction has 1790 states and 2976 transitions. [2022-11-16 11:22:51,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 75.5) internal successors, (302), 4 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:22:51,555 INFO L276 IsEmpty]: Start isEmpty. Operand 1790 states and 2976 transitions. [2022-11-16 11:22:51,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1198 [2022-11-16 11:22:51,620 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:22:51,622 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:22:51,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 11:22:51,623 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:22:51,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:22:51,624 INFO L85 PathProgramCache]: Analyzing trace with hash -965546885, now seen corresponding path program 1 times [2022-11-16 11:22:51,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:22:51,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206314811] [2022-11-16 11:22:51,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:22:51,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:22:54,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:23:02,424 INFO L134 CoverageAnalysis]: Checked inductivity of 298 backedges. 298 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:23:02,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:23:02,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206314811] [2022-11-16 11:23:02,435 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206314811] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:23:02,436 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:23:02,437 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:23:02,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99779731] [2022-11-16 11:23:02,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:23:02,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:23:02,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:23:02,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:23:02,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:23:02,442 INFO L87 Difference]: Start difference. First operand 1790 states and 2976 transitions. Second operand has 5 states, 5 states have (on average 239.4) internal successors, (1197), 5 states have internal predecessors, (1197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:23:03,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:23:03,470 INFO L93 Difference]: Finished difference Result 4478 states and 7446 transitions. [2022-11-16 11:23:03,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:23:03,472 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 239.4) internal successors, (1197), 5 states have internal predecessors, (1197), 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 1197 [2022-11-16 11:23:03,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:23:03,486 INFO L225 Difference]: With dead ends: 4478 [2022-11-16 11:23:03,486 INFO L226 Difference]: Without dead ends: 3133 [2022-11-16 11:23:03,489 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:23:03,494 INFO L413 NwaCegarLoop]: 2842 mSDtfsCounter, 5587 mSDsluCounter, 4927 mSDsCounter, 0 mSdLazyCounter, 512 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5587 SdHoareTripleChecker+Valid, 7769 SdHoareTripleChecker+Invalid, 513 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 512 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-16 11:23:03,497 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5587 Valid, 7769 Invalid, 513 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 512 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-16 11:23:03,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3133 states. [2022-11-16 11:23:03,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3133 to 1799. [2022-11-16 11:23:03,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1799 states, 1798 states have (on average 1.6624026696329255) internal successors, (2989), 1798 states have internal predecessors, (2989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:23:03,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1799 states to 1799 states and 2989 transitions. [2022-11-16 11:23:03,561 INFO L78 Accepts]: Start accepts. Automaton has 1799 states and 2989 transitions. Word has length 1197 [2022-11-16 11:23:03,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:23:03,562 INFO L495 AbstractCegarLoop]: Abstraction has 1799 states and 2989 transitions. [2022-11-16 11:23:03,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 239.4) internal successors, (1197), 5 states have internal predecessors, (1197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:23:03,564 INFO L276 IsEmpty]: Start isEmpty. Operand 1799 states and 2989 transitions. [2022-11-16 11:23:03,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1199 [2022-11-16 11:23:03,619 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:23:03,620 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:23:03,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 11:23:03,621 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:23:03,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:23:03,623 INFO L85 PathProgramCache]: Analyzing trace with hash -1285345605, now seen corresponding path program 1 times [2022-11-16 11:23:03,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:23:03,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66962142] [2022-11-16 11:23:03,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:23:03,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:24:27,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:46,815 INFO L134 CoverageAnalysis]: Checked inductivity of 298 backedges. 2 proven. 296 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:24:46,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:24:46,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66962142] [2022-11-16 11:24:46,819 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66962142] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:24:46,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [488804106] [2022-11-16 11:24:46,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:24:46,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:24:46,824 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9aa866e-f9da-4e70-b1a3-ba09fadf1970/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:24:46,828 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9aa866e-f9da-4e70-b1a3-ba09fadf1970/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:24:46,853 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9aa866e-f9da-4e70-b1a3-ba09fadf1970/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 11:24:51,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:51,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 9983 conjuncts, 119 conjunts are in the unsatisfiable core [2022-11-16 11:24:51,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:25:01,059 WARN L319 FreeRefinementEngine]: Global settings require throwing the following exception [2022-11-16 11:25:01,117 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9aa866e-f9da-4e70-b1a3-ba09fadf1970/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 11:25:01,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9aa866e-f9da-4e70-b1a3-ba09fadf1970/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:25:01,260 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: Maybe an infinite loop at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.sequentialSubsetPush(QuantifierPushUtilsForSubsetPush.java:130) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:345) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:188) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:169) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:77) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:61) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:295) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:281) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.eliminate(PartialQuantifierElimination.java:90) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:238) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:420) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:199) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:299) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:185) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:163) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-16 11:25:01,265 INFO L158 Benchmark]: Toolchain (without parser) took 157723.97ms. Allocated memory was 146.8MB in the beginning and 2.1GB in the end (delta: 1.9GB). Free memory was 103.5MB in the beginning and 1.7GB in the end (delta: -1.6GB). Peak memory consumption was 1.4GB. Max. memory is 16.1GB. [2022-11-16 11:25:01,265 INFO L158 Benchmark]: CDTParser took 0.40ms. Allocated memory is still 146.8MB. Free memory is still 128.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 11:25:01,266 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1830.24ms. Allocated memory was 146.8MB in the beginning and 224.4MB in the end (delta: 77.6MB). Free memory was 103.3MB in the beginning and 152.5MB in the end (delta: -49.2MB). Peak memory consumption was 78.9MB. Max. memory is 16.1GB. [2022-11-16 11:25:01,266 INFO L158 Benchmark]: Boogie Procedure Inliner took 612.14ms. Allocated memory is still 224.4MB. Free memory was 152.5MB in the beginning and 128.6MB in the end (delta: 23.9MB). Peak memory consumption was 84.8MB. Max. memory is 16.1GB. [2022-11-16 11:25:01,267 INFO L158 Benchmark]: Boogie Preprocessor took 539.30ms. Allocated memory is still 224.4MB. Free memory was 128.6MB in the beginning and 103.3MB in the end (delta: 25.2MB). Peak memory consumption was 32.7MB. Max. memory is 16.1GB. [2022-11-16 11:25:01,267 INFO L158 Benchmark]: RCFGBuilder took 12618.43ms. Allocated memory was 224.4MB in the beginning and 780.1MB in the end (delta: 555.7MB). Free memory was 102.5MB in the beginning and 368.7MB in the end (delta: -266.2MB). Peak memory consumption was 454.7MB. Max. memory is 16.1GB. [2022-11-16 11:25:01,268 INFO L158 Benchmark]: TraceAbstraction took 142112.06ms. Allocated memory was 780.1MB in the beginning and 2.1GB in the end (delta: 1.3GB). Free memory was 368.7MB in the beginning and 1.7GB in the end (delta: -1.4GB). Peak memory consumption was 1.1GB. Max. memory is 16.1GB. [2022-11-16 11:25:01,270 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.40ms. Allocated memory is still 146.8MB. Free memory is still 128.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1830.24ms. Allocated memory was 146.8MB in the beginning and 224.4MB in the end (delta: 77.6MB). Free memory was 103.3MB in the beginning and 152.5MB in the end (delta: -49.2MB). Peak memory consumption was 78.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 612.14ms. Allocated memory is still 224.4MB. Free memory was 152.5MB in the beginning and 128.6MB in the end (delta: 23.9MB). Peak memory consumption was 84.8MB. Max. memory is 16.1GB. * Boogie Preprocessor took 539.30ms. Allocated memory is still 224.4MB. Free memory was 128.6MB in the beginning and 103.3MB in the end (delta: 25.2MB). Peak memory consumption was 32.7MB. Max. memory is 16.1GB. * RCFGBuilder took 12618.43ms. Allocated memory was 224.4MB in the beginning and 780.1MB in the end (delta: 555.7MB). Free memory was 102.5MB in the beginning and 368.7MB in the end (delta: -266.2MB). Peak memory consumption was 454.7MB. Max. memory is 16.1GB. * TraceAbstraction took 142112.06ms. Allocated memory was 780.1MB in the beginning and 2.1GB in the end (delta: 1.3GB). Free memory was 368.7MB in the beginning and 1.7GB in the end (delta: -1.4GB). Peak memory consumption was 1.1GB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: Maybe an infinite loop de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: Maybe an infinite loop: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.sequentialSubsetPush(QuantifierPushUtilsForSubsetPush.java:130) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-11-16 11:25:01,320 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9aa866e-f9da-4e70-b1a3-ba09fadf1970/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9aa866e-f9da-4e70-b1a3-ba09fadf1970/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9aa866e-f9da-4e70-b1a3-ba09fadf1970/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9aa866e-f9da-4e70-b1a3-ba09fadf1970/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9aa866e-f9da-4e70-b1a3-ba09fadf1970/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.train-gate.4.prop1-back-serstep.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9aa866e-f9da-4e70-b1a3-ba09fadf1970/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9aa866e-f9da-4e70-b1a3-ba09fadf1970/bin/uautomizer-tPACEb0tL8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 2bedabf9da912e74ecbc6dbab46ef1378d8a6db48cb084dcd5e9d59e252a2d0d --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 11:25:04,175 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:25:04,178 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:25:04,212 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:25:04,213 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:25:04,219 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:25:04,222 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:25:04,226 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:25:04,230 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:25:04,234 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:25:04,237 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:25:04,240 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:25:04,240 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:25:04,247 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:25:04,249 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:25:04,251 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:25:04,254 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:25:04,255 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:25:04,258 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:25:04,264 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:25:04,269 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:25:04,275 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:25:04,276 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:25:04,278 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:25:04,283 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:25:04,289 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:25:04,290 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:25:04,291 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:25:04,293 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:25:04,294 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:25:04,295 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:25:04,297 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:25:04,299 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:25:04,300 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:25:04,304 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:25:04,305 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:25:04,306 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:25:04,307 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:25:04,307 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:25:04,309 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:25:04,310 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:25:04,311 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9aa866e-f9da-4e70-b1a3-ba09fadf1970/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-11-16 11:25:04,363 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:25:04,363 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:25:04,364 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:25:04,365 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:25:04,366 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:25:04,367 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:25:04,369 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:25:04,369 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:25:04,370 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:25:04,370 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:25:04,372 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:25:04,372 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 11:25:04,373 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:25:04,373 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 11:25:04,373 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-16 11:25:04,374 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-16 11:25:04,374 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-16 11:25:04,374 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 11:25:04,375 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:25:04,375 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 11:25:04,375 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:25:04,376 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:25:04,376 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:25:04,376 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:25:04,377 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:25:04,377 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:25:04,377 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 11:25:04,378 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-16 11:25:04,378 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-16 11:25:04,378 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 11:25:04,379 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 11:25:04,379 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 11:25:04,380 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-16 11:25:04,380 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_f9aa866e-f9da-4e70-b1a3-ba09fadf1970/bin/uautomizer-tPACEb0tL8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9aa866e-f9da-4e70-b1a3-ba09fadf1970/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2bedabf9da912e74ecbc6dbab46ef1378d8a6db48cb084dcd5e9d59e252a2d0d [2022-11-16 11:25:04,930 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:25:04,970 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:25:04,973 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:25:04,976 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:25:04,979 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:25:04,982 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9aa866e-f9da-4e70-b1a3-ba09fadf1970/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.train-gate.4.prop1-back-serstep.c [2022-11-16 11:25:05,076 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9aa866e-f9da-4e70-b1a3-ba09fadf1970/bin/uautomizer-tPACEb0tL8/data/5728bf8c0/c0d994902c3a419cb6aa15995e53d04e/FLAGdb1b35e96 [2022-11-16 11:25:05,968 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:25:05,969 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9aa866e-f9da-4e70-b1a3-ba09fadf1970/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.train-gate.4.prop1-back-serstep.c [2022-11-16 11:25:05,999 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9aa866e-f9da-4e70-b1a3-ba09fadf1970/bin/uautomizer-tPACEb0tL8/data/5728bf8c0/c0d994902c3a419cb6aa15995e53d04e/FLAGdb1b35e96 [2022-11-16 11:25:06,072 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9aa866e-f9da-4e70-b1a3-ba09fadf1970/bin/uautomizer-tPACEb0tL8/data/5728bf8c0/c0d994902c3a419cb6aa15995e53d04e [2022-11-16 11:25:06,076 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:25:06,079 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:25:06,085 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:25:06,086 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:25:06,090 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:25:06,091 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:25:06" (1/1) ... [2022-11-16 11:25:06,094 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@329aea35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:25:06, skipping insertion in model container [2022-11-16 11:25:06,094 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:25:06" (1/1) ... [2022-11-16 11:25:06,103 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:25:06,254 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:25:06,502 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9aa866e-f9da-4e70-b1a3-ba09fadf1970/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.train-gate.4.prop1-back-serstep.c[1014,1027] [2022-11-16 11:25:07,299 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:25:07,308 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:25:07,322 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9aa866e-f9da-4e70-b1a3-ba09fadf1970/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.train-gate.4.prop1-back-serstep.c[1014,1027] [2022-11-16 11:25:07,684 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:25:07,701 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:25:07,702 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:25:07 WrapperNode [2022-11-16 11:25:07,702 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:25:07,704 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:25:07,704 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:25:07,704 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:25:07,714 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:25:07" (1/1) ... [2022-11-16 11:25:07,841 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:25:07" (1/1) ... [2022-11-16 11:25:08,068 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 4750 [2022-11-16 11:25:08,078 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:25:08,080 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:25:08,080 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:25:08,080 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:25:08,091 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:25:07" (1/1) ... [2022-11-16 11:25:08,092 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:25:07" (1/1) ... [2022-11-16 11:25:08,114 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:25:07" (1/1) ... [2022-11-16 11:25:08,115 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:25:07" (1/1) ... [2022-11-16 11:25:08,256 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:25:07" (1/1) ... [2022-11-16 11:25:08,275 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:25:07" (1/1) ... [2022-11-16 11:25:08,326 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:25:07" (1/1) ... [2022-11-16 11:25:08,362 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:25:07" (1/1) ... [2022-11-16 11:25:08,455 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:25:08,457 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:25:08,457 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:25:08,457 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:25:08,458 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:25:07" (1/1) ... [2022-11-16 11:25:08,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:25:08,480 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9aa866e-f9da-4e70-b1a3-ba09fadf1970/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:25:08,534 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9aa866e-f9da-4e70-b1a3-ba09fadf1970/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 11:25:08,624 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9aa866e-f9da-4e70-b1a3-ba09fadf1970/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 11:25:08,645 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:25:08,646 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:25:09,737 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:25:09,740 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:25:22,920 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:25:22,931 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:25:22,931 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-16 11:25:22,940 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:25:22 BoogieIcfgContainer [2022-11-16 11:25:22,940 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:25:22,944 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 11:25:22,944 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 11:25:22,948 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 11:25:22,948 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:25:06" (1/3) ... [2022-11-16 11:25:22,950 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31d366e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:25:22, skipping insertion in model container [2022-11-16 11:25:22,950 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:25:07" (2/3) ... [2022-11-16 11:25:22,951 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31d366e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:25:22, skipping insertion in model container [2022-11-16 11:25:22,951 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:25:22" (3/3) ... [2022-11-16 11:25:22,953 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.train-gate.4.prop1-back-serstep.c [2022-11-16 11:25:22,978 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 11:25:22,979 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 11:25:23,066 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:25:23,077 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;@4617eb70, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:25:23,077 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-16 11:25:23,083 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:25:23,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-16 11:25:23,092 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:25:23,093 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-16 11:25:23,094 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:25:23,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:25:23,104 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-11-16 11:25:23,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:25:23,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1737658904] [2022-11-16 11:25:23,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:25:23,127 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:25:23,127 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9aa866e-f9da-4e70-b1a3-ba09fadf1970/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:25:23,136 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9aa866e-f9da-4e70-b1a3-ba09fadf1970/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:25:23,179 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9aa866e-f9da-4e70-b1a3-ba09fadf1970/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-16 11:25:24,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:25:24,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 552 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-16 11:25:24,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:25:24,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:25:24,701 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:25:24,702 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:25:24,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1737658904] [2022-11-16 11:25:24,703 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1737658904] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:25:24,703 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:25:24,704 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:25:24,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170431145] [2022-11-16 11:25:24,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:25:24,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:25:24,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:25:24,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:25:24,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:25:24,770 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 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 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:25:26,746 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.86s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-16 11:25:26,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:25:26,988 INFO L93 Difference]: Finished difference Result 20 states and 30 transitions. [2022-11-16 11:25:26,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:25:26,993 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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 5 [2022-11-16 11:25:26,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:25:27,017 INFO L225 Difference]: With dead ends: 20 [2022-11-16 11:25:27,017 INFO L226 Difference]: Without dead ends: 11 [2022-11-16 11:25:27,020 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:25:27,024 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 4 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:25:27,025 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 13 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-16 11:25:27,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-11-16 11:25:27,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 9. [2022-11-16 11:25:27,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:25:27,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2022-11-16 11:25:27,060 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2022-11-16 11:25:27,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:25:27,061 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2022-11-16 11:25:27,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:25:27,061 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2022-11-16 11:25:27,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-16 11:25:27,062 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:25:27,062 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-11-16 11:25:27,082 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9aa866e-f9da-4e70-b1a3-ba09fadf1970/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-11-16 11:25:27,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9aa866e-f9da-4e70-b1a3-ba09fadf1970/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:25:27,277 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:25:27,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:25:27,278 INFO L85 PathProgramCache]: Analyzing trace with hash 271073635, now seen corresponding path program 1 times [2022-11-16 11:25:27,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:25:27,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2124855864] [2022-11-16 11:25:27,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:25:27,283 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:25:27,283 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9aa866e-f9da-4e70-b1a3-ba09fadf1970/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:25:27,285 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9aa866e-f9da-4e70-b1a3-ba09fadf1970/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:25:27,308 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9aa866e-f9da-4e70-b1a3-ba09fadf1970/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-16 11:25:30,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:25:30,210 INFO L263 TraceCheckSpWp]: Trace formula consists of 4315 conjuncts, 112 conjunts are in the unsatisfiable core [2022-11-16 11:25:30,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:25:31,000 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:25:31,001 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:25:33,902 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:25:33,902 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:25:33,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2124855864] [2022-11-16 11:25:33,903 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2124855864] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:25:33,903 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:25:33,904 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-11-16 11:25:33,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487654085] [2022-11-16 11:25:33,904 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:25:33,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 11:25:33,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:25:33,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 11:25:33,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:25:33,908 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 8 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:25:37,076 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-16 11:25:37,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:25:37,180 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2022-11-16 11:25:37,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:25:37,181 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 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 8 [2022-11-16 11:25:37,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:25:37,181 INFO L225 Difference]: With dead ends: 16 [2022-11-16 11:25:37,181 INFO L226 Difference]: Without dead ends: 14 [2022-11-16 11:25:37,182 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-11-16 11:25:37,183 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 4 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 11 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:25:37,184 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 24 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 1 Unknown, 11 Unchecked, 3.1s Time] [2022-11-16 11:25:37,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-11-16 11:25:37,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 12. [2022-11-16 11:25:37,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:25:37,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2022-11-16 11:25:37,190 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 8 [2022-11-16 11:25:37,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:25:37,190 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2022-11-16 11:25:37,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:25:37,191 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2022-11-16 11:25:37,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-16 11:25:37,192 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:25:37,192 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-11-16 11:25:37,236 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9aa866e-f9da-4e70-b1a3-ba09fadf1970/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-16 11:25:37,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9aa866e-f9da-4e70-b1a3-ba09fadf1970/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:25:37,417 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:25:37,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:25:37,417 INFO L85 PathProgramCache]: Analyzing trace with hash 1020920393, now seen corresponding path program 2 times [2022-11-16 11:25:37,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:25:37,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1785907554] [2022-11-16 11:25:37,425 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:25:37,425 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:25:37,425 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9aa866e-f9da-4e70-b1a3-ba09fadf1970/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:25:37,426 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9aa866e-f9da-4e70-b1a3-ba09fadf1970/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:25:37,471 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9aa866e-f9da-4e70-b1a3-ba09fadf1970/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-16 11:25:41,567 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 11:25:41,568 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:25:41,771 INFO L263 TraceCheckSpWp]: Trace formula consists of 8078 conjuncts, 332 conjunts are in the unsatisfiable core [2022-11-16 11:25:41,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:25:55,206 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:25:55,206 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:27:19,174 WARN L233 SmtUtils]: Spent 1.16m on a formula simplification. DAG size of input: 783 DAG size of output: 781 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 11:27:34,376 WARN L233 SmtUtils]: Spent 7.15s on a formula simplification that was a NOOP. DAG size: 787 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 11:27:35,411 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:27:35,412 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:27:35,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1785907554] [2022-11-16 11:27:35,414 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1785907554] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:27:35,414 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:27:35,414 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2022-11-16 11:27:35,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051880079] [2022-11-16 11:27:35,416 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:27:35,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 11:27:35,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:27:35,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 11:27:35,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=68, Unknown=1, NotChecked=0, Total=90 [2022-11-16 11:27:35,421 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand has 10 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:38,579 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-16 11:27:40,822 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-16 11:27:43,141 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-16 11:27:43,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:27:43,143 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2022-11-16 11:27:43,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 11:27:43,185 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 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 11 [2022-11-16 11:27:43,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:27:43,186 INFO L225 Difference]: With dead ends: 19 [2022-11-16 11:27:43,186 INFO L226 Difference]: Without dead ends: 17 [2022-11-16 11:27:43,187 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 100.2s TimeCoverageRelationStatistics Valid=26, Invalid=83, Unknown=1, NotChecked=0, Total=110 [2022-11-16 11:27:43,188 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 3 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 38 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2022-11-16 11:27:43,188 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 41 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 3 Unknown, 38 Unchecked, 6.8s Time] [2022-11-16 11:27:43,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-11-16 11:27:43,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 15. [2022-11-16 11:27:43,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 14 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:43,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2022-11-16 11:27:43,205 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 11 [2022-11-16 11:27:43,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:27:43,206 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2022-11-16 11:27:43,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:43,207 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2022-11-16 11:27:43,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-16 11:27:43,209 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:27:43,209 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1] [2022-11-16 11:27:43,271 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9aa866e-f9da-4e70-b1a3-ba09fadf1970/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-16 11:27:43,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9aa866e-f9da-4e70-b1a3-ba09fadf1970/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:27:43,424 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:27:43,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:27:43,425 INFO L85 PathProgramCache]: Analyzing trace with hash 1580781475, now seen corresponding path program 3 times [2022-11-16 11:27:43,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:27:43,435 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1121553569] [2022-11-16 11:27:43,435 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 11:27:43,435 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:27:43,435 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9aa866e-f9da-4e70-b1a3-ba09fadf1970/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:27:43,441 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9aa866e-f9da-4e70-b1a3-ba09fadf1970/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:27:43,442 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9aa866e-f9da-4e70-b1a3-ba09fadf1970/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-16 11:27:48,774 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-16 11:27:48,774 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:27:49,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 11841 conjuncts, 733 conjunts are in the unsatisfiable core [2022-11-16 11:27:49,154 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:28:05,919 WARN L233 SmtUtils]: Spent 10.51s on a formula simplification. DAG size of input: 660 DAG size of output: 652 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 11:29:31,465 WARN L230 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9aa866e-f9da-4e70-b1a3-ba09fadf1970/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2022-11-16 11:29:31,467 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9aa866e-f9da-4e70-b1a3-ba09fadf1970/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 101 [2022-11-16 11:29:31,467 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:29:31,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1121553569] [2022-11-16 11:29:31,468 WARN L319 FreeRefinementEngine]: Global settings require throwing the following exception [2022-11-16 11:29:31,535 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9aa866e-f9da-4e70-b1a3-ba09fadf1970/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-16 11:29:31,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9aa866e-f9da-4e70-b1a3-ba09fadf1970/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:29:31,669 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9aa866e-f9da-4e70-b1a3-ba09fadf1970/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:243) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseSuccess(Executor.java:258) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.push(Scriptor.java:133) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.push(DiffWrapperScript.java:90) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.push(WrapperScript.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.push(HistoryRecordingScript.java:107) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.push(WrapperScript.java:148) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.UndoableWrapperScript.push(UndoableWrapperScript.java:54) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA.pushContext(SimplifyDDA.java:736) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA$Simplifier.walkParam(SimplifyDDA.java:525) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA$Simplifier.walk(SimplifyDDA.java:411) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:115) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:106) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA.simplifyOnce(SimplifyDDA.java:649) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.simplify.SimplifyDDAWithTimeout.getSimplifiedTerm(SimplifyDDAWithTimeout.java:180) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:198) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:360) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:305) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp$UnifyPostprocessor.postprocess(TraceCheckSpWp.java:582) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:420) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:199) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:299) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:185) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:163) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:121) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1465) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:658) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:239) ... 52 more [2022-11-16 11:29:31,672 INFO L158 Benchmark]: Toolchain (without parser) took 265593.19ms. Allocated memory was 58.7MB in the beginning and 2.7GB in the end (delta: 2.6GB). Free memory was 29.9MB in the beginning and 1.4GB in the end (delta: -1.4GB). Peak memory consumption was 1.7GB. Max. memory is 16.1GB. [2022-11-16 11:29:31,673 INFO L158 Benchmark]: CDTParser took 0.37ms. Allocated memory is still 58.7MB. Free memory is still 40.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 11:29:31,673 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1617.61ms. Allocated memory was 58.7MB in the beginning and 115.3MB in the end (delta: 56.6MB). Free memory was 29.7MB in the beginning and 50.6MB in the end (delta: -20.8MB). Peak memory consumption was 35.3MB. Max. memory is 16.1GB. [2022-11-16 11:29:31,674 INFO L158 Benchmark]: Boogie Procedure Inliner took 374.23ms. Allocated memory is still 115.3MB. Free memory was 50.6MB in the beginning and 51.8MB in the end (delta: -1.2MB). Peak memory consumption was 22.2MB. Max. memory is 16.1GB. [2022-11-16 11:29:31,674 INFO L158 Benchmark]: Boogie Preprocessor took 376.16ms. Allocated memory is still 115.3MB. Free memory was 51.8MB in the beginning and 43.5MB in the end (delta: 8.3MB). Peak memory consumption was 21.8MB. Max. memory is 16.1GB. [2022-11-16 11:29:31,675 INFO L158 Benchmark]: RCFGBuilder took 14483.96ms. Allocated memory was 115.3MB in the beginning and 738.2MB in the end (delta: 622.9MB). Free memory was 43.3MB in the beginning and 468.6MB in the end (delta: -425.3MB). Peak memory consumption was 439.9MB. Max. memory is 16.1GB. [2022-11-16 11:29:31,675 INFO L158 Benchmark]: TraceAbstraction took 248727.81ms. Allocated memory was 738.2MB in the beginning and 2.7GB in the end (delta: 1.9GB). Free memory was 467.5MB in the beginning and 1.4GB in the end (delta: -977.6MB). Peak memory consumption was 1.5GB. Max. memory is 16.1GB. [2022-11-16 11:29:31,678 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37ms. Allocated memory is still 58.7MB. Free memory is still 40.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1617.61ms. Allocated memory was 58.7MB in the beginning and 115.3MB in the end (delta: 56.6MB). Free memory was 29.7MB in the beginning and 50.6MB in the end (delta: -20.8MB). Peak memory consumption was 35.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 374.23ms. Allocated memory is still 115.3MB. Free memory was 50.6MB in the beginning and 51.8MB in the end (delta: -1.2MB). Peak memory consumption was 22.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 376.16ms. Allocated memory is still 115.3MB. Free memory was 51.8MB in the beginning and 43.5MB in the end (delta: 8.3MB). Peak memory consumption was 21.8MB. Max. memory is 16.1GB. * RCFGBuilder took 14483.96ms. Allocated memory was 115.3MB in the beginning and 738.2MB in the end (delta: 622.9MB). Free memory was 43.3MB in the beginning and 468.6MB in the end (delta: -425.3MB). Peak memory consumption was 439.9MB. Max. memory is 16.1GB. * TraceAbstraction took 248727.81ms. Allocated memory was 738.2MB in the beginning and 2.7GB in the end (delta: 1.9GB). Free memory was 467.5MB in the beginning and 1.4GB in the end (delta: -977.6MB). Peak memory consumption was 1.5GB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9aa866e-f9da-4e70-b1a3-ba09fadf1970/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9aa866e-f9da-4e70-b1a3-ba09fadf1970/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:243) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9aa866e-f9da-4e70-b1a3-ba09fadf1970/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory")