./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.itc99_b13.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a 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_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.itc99_b13.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash a98e282f97a500bd5508bb46aaa1001023120ce878501f3889727b27d17dfa18 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-02 21:03:50,267 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 21:03:50,271 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 21:03:50,323 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 21:03:50,324 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 21:03:50,328 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 21:03:50,330 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 21:03:50,334 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 21:03:50,337 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 21:03:50,342 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 21:03:50,343 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 21:03:50,345 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 21:03:50,346 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 21:03:50,348 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 21:03:50,350 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 21:03:50,351 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 21:03:50,354 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 21:03:50,354 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 21:03:50,356 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 21:03:50,366 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 21:03:50,367 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 21:03:50,368 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 21:03:50,372 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 21:03:50,373 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 21:03:50,381 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 21:03:50,383 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 21:03:50,383 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 21:03:50,385 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 21:03:50,386 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 21:03:50,387 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 21:03:50,387 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 21:03:50,388 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 21:03:50,390 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 21:03:50,391 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 21:03:50,393 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 21:03:50,393 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 21:03:50,394 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 21:03:50,394 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 21:03:50,394 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 21:03:50,395 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 21:03:50,396 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 21:03:50,397 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-02 21:03:50,435 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 21:03:50,436 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 21:03:50,436 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 21:03:50,437 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 21:03:50,437 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 21:03:50,438 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 21:03:50,438 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 21:03:50,439 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 21:03:50,439 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 21:03:50,439 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 21:03:50,440 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 21:03:50,440 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 21:03:50,441 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 21:03:50,441 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 21:03:50,441 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 21:03:50,441 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 21:03:50,442 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 21:03:50,442 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 21:03:50,442 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 21:03:50,442 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 21:03:50,443 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 21:03:50,443 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:03:50,443 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 21:03:50,443 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 21:03:50,444 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 21:03:50,444 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 21:03:50,445 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 21:03:50,446 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 21:03:50,446 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 21:03:50,446 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 21:03:50,446 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_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a98e282f97a500bd5508bb46aaa1001023120ce878501f3889727b27d17dfa18 [2022-11-02 21:03:50,717 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 21:03:50,744 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 21:03:50,748 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 21:03:50,750 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 21:03:50,750 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 21:03:50,752 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.itc99_b13.c [2022-11-02 21:03:50,832 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/data/d9ef3d568/0eedd8a4b421405eb21eb35f8a5b7db7/FLAG465d95e99 [2022-11-02 21:03:51,321 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 21:03:51,322 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.itc99_b13.c [2022-11-02 21:03:51,346 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/data/d9ef3d568/0eedd8a4b421405eb21eb35f8a5b7db7/FLAG465d95e99 [2022-11-02 21:03:51,655 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/data/d9ef3d568/0eedd8a4b421405eb21eb35f8a5b7db7 [2022-11-02 21:03:51,658 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 21:03:51,659 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 21:03:51,660 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 21:03:51,661 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 21:03:51,664 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 21:03:51,665 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:03:51" (1/1) ... [2022-11-02 21:03:51,666 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c887532 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:51, skipping insertion in model container [2022-11-02 21:03:51,666 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:03:51" (1/1) ... [2022-11-02 21:03:51,673 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 21:03:51,712 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 21:03:51,903 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.itc99_b13.c[1107,1120] [2022-11-02 21:03:52,156 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:03:52,160 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 21:03:52,171 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.itc99_b13.c[1107,1120] [2022-11-02 21:03:52,259 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:03:52,271 INFO L208 MainTranslator]: Completed translation [2022-11-02 21:03:52,272 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:52 WrapperNode [2022-11-02 21:03:52,272 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 21:03:52,273 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 21:03:52,273 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 21:03:52,273 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 21:03:52,280 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:52" (1/1) ... [2022-11-02 21:03:52,306 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:52" (1/1) ... [2022-11-02 21:03:52,445 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1147 [2022-11-02 21:03:52,446 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 21:03:52,447 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 21:03:52,447 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 21:03:52,447 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 21:03:52,457 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:52" (1/1) ... [2022-11-02 21:03:52,458 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:52" (1/1) ... [2022-11-02 21:03:52,495 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:52" (1/1) ... [2022-11-02 21:03:52,497 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:52" (1/1) ... [2022-11-02 21:03:52,561 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:52" (1/1) ... [2022-11-02 21:03:52,569 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:52" (1/1) ... [2022-11-02 21:03:52,585 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:52" (1/1) ... [2022-11-02 21:03:52,593 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:52" (1/1) ... [2022-11-02 21:03:52,625 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 21:03:52,626 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 21:03:52,627 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 21:03:52,628 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 21:03:52,630 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:52" (1/1) ... [2022-11-02 21:03:52,638 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:03:52,650 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:03:52,665 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 21:03:52,694 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 21:03:52,714 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 21:03:52,715 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 21:03:52,959 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 21:03:52,961 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 21:04:01,129 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 21:04:01,143 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 21:04:01,143 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-02 21:04:01,146 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:04:01 BoogieIcfgContainer [2022-11-02 21:04:01,146 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 21:04:01,150 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 21:04:01,150 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 21:04:01,154 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 21:04:01,154 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 09:03:51" (1/3) ... [2022-11-02 21:04:01,155 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2139bbca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:04:01, skipping insertion in model container [2022-11-02 21:04:01,156 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:52" (2/3) ... [2022-11-02 21:04:01,156 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2139bbca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:04:01, skipping insertion in model container [2022-11-02 21:04:01,156 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:04:01" (3/3) ... [2022-11-02 21:04:01,158 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.itc99_b13.c [2022-11-02 21:04:01,179 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 21:04:01,179 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 21:04:01,250 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 21:04:01,266 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;@1cab2116, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 21:04:01,270 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 21:04:01,279 INFO L276 IsEmpty]: Start isEmpty. Operand has 125 states, 123 states have (on average 1.4959349593495934) internal successors, (184), 124 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:01,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-02 21:04:01,288 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:04:01,289 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-02 21:04:01,290 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:04:01,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:04:01,297 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-11-02 21:04:01,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:04:01,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541484252] [2022-11-02 21:04:01,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:01,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:04:07,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 21:04:07,589 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 21:04:14,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 21:04:14,078 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 21:04:14,080 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-02 21:04:14,081 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-02 21:04:14,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 21:04:14,089 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-02 21:04:14,093 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-02 21:04:14,157 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-02 21:04:14,183 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.11 09:04:14 BoogieIcfgContainer [2022-11-02 21:04:14,187 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-02 21:04:14,188 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-02 21:04:14,188 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-02 21:04:14,188 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-02 21:04:14,189 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:04:01" (3/4) ... [2022-11-02 21:04:14,192 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-02 21:04:14,192 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-02 21:04:14,195 INFO L158 Benchmark]: Toolchain (without parser) took 22534.60ms. Allocated memory was 100.7MB in the beginning and 499.1MB in the end (delta: 398.5MB). Free memory was 68.5MB in the beginning and 278.8MB in the end (delta: -210.3MB). Peak memory consumption was 188.3MB. Max. memory is 16.1GB. [2022-11-02 21:04:14,195 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 100.7MB. Free memory was 54.7MB in the beginning and 54.6MB in the end (delta: 48.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 21:04:14,197 INFO L158 Benchmark]: CACSL2BoogieTranslator took 611.76ms. Allocated memory is still 100.7MB. Free memory was 68.5MB in the beginning and 56.0MB in the end (delta: 12.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-02 21:04:14,198 INFO L158 Benchmark]: Boogie Procedure Inliner took 173.19ms. Allocated memory was 100.7MB in the beginning and 121.6MB in the end (delta: 21.0MB). Free memory was 56.0MB in the beginning and 88.7MB in the end (delta: -32.7MB). Peak memory consumption was 19.5MB. Max. memory is 16.1GB. [2022-11-02 21:04:14,204 INFO L158 Benchmark]: Boogie Preprocessor took 178.37ms. Allocated memory is still 121.6MB. Free memory was 88.7MB in the beginning and 80.4MB in the end (delta: 8.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-02 21:04:14,205 INFO L158 Benchmark]: RCFGBuilder took 8519.61ms. Allocated memory was 121.6MB in the beginning and 222.3MB in the end (delta: 100.7MB). Free memory was 80.4MB in the beginning and 166.4MB in the end (delta: -86.0MB). Peak memory consumption was 132.8MB. Max. memory is 16.1GB. [2022-11-02 21:04:14,206 INFO L158 Benchmark]: TraceAbstraction took 13037.15ms. Allocated memory was 222.3MB in the beginning and 499.1MB in the end (delta: 276.8MB). Free memory was 166.4MB in the beginning and 279.8MB in the end (delta: -113.4MB). Peak memory consumption was 213.8MB. Max. memory is 16.1GB. [2022-11-02 21:04:14,208 INFO L158 Benchmark]: Witness Printer took 4.86ms. Allocated memory is still 499.1MB. Free memory was 279.8MB in the beginning and 278.8MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-02 21:04:14,216 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 100.7MB. Free memory was 54.7MB in the beginning and 54.6MB in the end (delta: 48.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 611.76ms. Allocated memory is still 100.7MB. Free memory was 68.5MB in the beginning and 56.0MB in the end (delta: 12.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 173.19ms. Allocated memory was 100.7MB in the beginning and 121.6MB in the end (delta: 21.0MB). Free memory was 56.0MB in the beginning and 88.7MB in the end (delta: -32.7MB). Peak memory consumption was 19.5MB. Max. memory is 16.1GB. * Boogie Preprocessor took 178.37ms. Allocated memory is still 121.6MB. Free memory was 88.7MB in the beginning and 80.4MB in the end (delta: 8.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 8519.61ms. Allocated memory was 121.6MB in the beginning and 222.3MB in the end (delta: 100.7MB). Free memory was 80.4MB in the beginning and 166.4MB in the end (delta: -86.0MB). Peak memory consumption was 132.8MB. Max. memory is 16.1GB. * TraceAbstraction took 13037.15ms. Allocated memory was 222.3MB in the beginning and 499.1MB in the end (delta: 276.8MB). Free memory was 166.4MB in the beginning and 279.8MB in the end (delta: -113.4MB). Peak memory consumption was 213.8MB. Max. memory is 16.1GB. * Witness Printer took 4.86ms. Allocated memory is still 499.1MB. Free memory was 279.8MB in the beginning and 278.8MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 20]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseComplement at line 179, overapproximation of bitwiseOr at line 188, overapproximation of bitwiseAnd at line 173. Possible FailurePath: [L25] const SORT_1 mask_SORT_1 = (SORT_1)-1 >> (sizeof(SORT_1) * 8 - 1); [L26] const SORT_1 msb_SORT_1 = (SORT_1)1 << (1 - 1); [L28] const SORT_3 mask_SORT_3 = (SORT_3)-1 >> (sizeof(SORT_3) * 8 - 8); [L29] const SORT_3 msb_SORT_3 = (SORT_3)1 << (8 - 1); [L31] const SORT_10 mask_SORT_10 = (SORT_10)-1 >> (sizeof(SORT_10) * 8 - 32); [L32] const SORT_10 msb_SORT_10 = (SORT_10)1 << (32 - 1); [L34] const SORT_20 mask_SORT_20 = (SORT_20)-1 >> (sizeof(SORT_20) * 8 - 4); [L35] const SORT_20 msb_SORT_20 = (SORT_20)1 << (4 - 1); [L37] const SORT_29 mask_SORT_29 = (SORT_29)-1 >> (sizeof(SORT_29) * 8 - 10); [L38] const SORT_29 msb_SORT_29 = (SORT_29)1 << (10 - 1); [L40] const SORT_33 mask_SORT_33 = (SORT_33)-1 >> (sizeof(SORT_33) * 8 - 2); [L41] const SORT_33 msb_SORT_33 = (SORT_33)1 << (2 - 1); [L43] const SORT_1 var_7 = 0; [L44] const SORT_10 var_12 = 1; [L45] const SORT_20 var_21 = 0; [L46] const SORT_10 var_26 = 0; [L47] const SORT_29 var_30 = 0; [L48] const SORT_1 var_122 = 1; [L49] const SORT_20 var_126 = 1; [L50] const SORT_3 var_183 = 0; [L51] const SORT_10 var_254 = 104; [L53] SORT_1 input_2; [L54] SORT_3 input_4; [L55] SORT_1 input_5; [L56] SORT_1 input_6; [L57] SORT_1 input_201; [L58] SORT_1 input_228; [L59] SORT_1 input_234; [L60] SORT_1 input_235; [L61] SORT_29 input_249; [L62] SORT_1 input_262; [L63] SORT_1 input_270; [L64] SORT_1 input_278; [L65] SORT_1 input_284; [L66] SORT_1 input_289; [L67] SORT_1 input_290; [L68] SORT_1 input_291; [L69] SORT_1 input_300; [L70] SORT_1 input_301; [L71] SORT_1 input_302; [L72] SORT_3 input_323; [L73] SORT_1 input_330; [L74] SORT_1 input_336; [L76] SORT_1 state_8 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L77] SORT_1 state_15 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L78] SORT_20 state_22 = __VERIFIER_nondet_uchar() & mask_SORT_20; [L79] SORT_29 state_31 = __VERIFIER_nondet_ushort() & mask_SORT_29; [L80] SORT_1 state_38 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L81] SORT_1 state_43 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L82] SORT_20 state_49 = __VERIFIER_nondet_uchar() & mask_SORT_20; [L83] SORT_1 state_60 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L84] SORT_1 state_64 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L85] SORT_1 state_72 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L86] SORT_1 state_86 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L87] SORT_1 state_100 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L88] SORT_1 state_123 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L89] SORT_1 state_130 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L90] SORT_1 state_135 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L91] SORT_1 state_141 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L92] SORT_1 state_153 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L93] SORT_1 state_166 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L94] SORT_1 state_177 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L95] SORT_3 state_184 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L96] SORT_1 state_197 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L97] SORT_1 state_199 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L98] SORT_1 state_203 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L100] SORT_1 init_9_arg_1 = var_7; [L101] state_8 = init_9_arg_1 [L102] SORT_1 init_16_arg_1 = var_7; [L103] state_15 = init_16_arg_1 [L104] SORT_20 init_23_arg_1 = var_21; [L105] state_22 = init_23_arg_1 [L106] SORT_29 init_32_arg_1 = var_30; [L107] state_31 = init_32_arg_1 [L108] SORT_1 init_39_arg_1 = var_7; [L109] state_38 = init_39_arg_1 [L110] SORT_1 init_44_arg_1 = var_7; [L111] state_43 = init_44_arg_1 [L112] SORT_20 init_50_arg_1 = var_21; [L113] state_49 = init_50_arg_1 [L114] SORT_1 init_61_arg_1 = var_7; [L115] state_60 = init_61_arg_1 [L116] SORT_1 init_65_arg_1 = var_7; [L117] state_64 = init_65_arg_1 [L118] SORT_1 init_73_arg_1 = var_7; [L119] state_72 = init_73_arg_1 [L120] SORT_1 init_87_arg_1 = var_7; [L121] state_86 = init_87_arg_1 [L122] SORT_1 init_101_arg_1 = var_7; [L123] state_100 = init_101_arg_1 [L124] SORT_1 init_124_arg_1 = var_122; [L125] state_123 = init_124_arg_1 [L126] SORT_1 init_131_arg_1 = var_7; [L127] state_130 = init_131_arg_1 [L128] SORT_1 init_136_arg_1 = var_7; [L129] state_135 = init_136_arg_1 [L130] SORT_1 init_142_arg_1 = var_7; [L131] state_141 = init_142_arg_1 [L132] SORT_1 init_154_arg_1 = var_7; [L133] state_153 = init_154_arg_1 [L134] SORT_1 init_167_arg_1 = var_7; [L135] state_166 = init_167_arg_1 [L136] SORT_1 init_178_arg_1 = var_7; [L137] state_177 = init_178_arg_1 [L138] SORT_3 init_185_arg_1 = var_183; [L139] state_184 = init_185_arg_1 [L140] SORT_1 init_198_arg_1 = var_7; [L141] state_197 = init_198_arg_1 [L142] SORT_1 init_200_arg_1 = var_7; [L143] state_199 = init_200_arg_1 [L144] SORT_1 init_204_arg_1 = var_7; [L145] state_203 = init_204_arg_1 VAL [init_101_arg_1=0, init_124_arg_1=1, init_131_arg_1=0, init_136_arg_1=0, init_142_arg_1=0, init_154_arg_1=0, init_167_arg_1=0, init_16_arg_1=0, init_178_arg_1=0, init_185_arg_1=0, init_198_arg_1=0, init_200_arg_1=0, init_204_arg_1=0, init_23_arg_1=0, init_32_arg_1=0, init_39_arg_1=0, init_44_arg_1=0, init_50_arg_1=0, init_61_arg_1=0, init_65_arg_1=0, init_73_arg_1=0, init_87_arg_1=0, init_9_arg_1=0, mask_SORT_1=1, mask_SORT_10=4294967295, mask_SORT_20=15, mask_SORT_29=1023, mask_SORT_3=255, mask_SORT_33=3, msb_SORT_1=1, msb_SORT_10=2147483648, msb_SORT_20=8, msb_SORT_29=512, msb_SORT_3=128, msb_SORT_33=2, state_100=0, state_123=1, state_130=0, state_135=0, state_141=0, state_15=0, state_153=0, state_166=0, state_177=0, state_184=0, state_197=0, state_199=0, state_203=0, state_22=0, state_31=0, state_38=0, state_43=0, state_49=0, state_60=0, state_64=0, state_72=0, state_8=0, state_86=0, var_12=1, var_122=1, var_126=1, var_183=0, var_21=0, var_254=104, var_26=0, var_30=0, var_7=0] [L148] input_2 = __VERIFIER_nondet_uchar() [L149] input_4 = __VERIFIER_nondet_uchar() [L150] input_5 = __VERIFIER_nondet_uchar() [L151] input_6 = __VERIFIER_nondet_uchar() [L152] input_201 = __VERIFIER_nondet_uchar() [L153] input_228 = __VERIFIER_nondet_uchar() [L154] input_234 = __VERIFIER_nondet_uchar() [L155] input_235 = __VERIFIER_nondet_uchar() [L156] input_249 = __VERIFIER_nondet_ushort() [L157] input_262 = __VERIFIER_nondet_uchar() [L158] input_270 = __VERIFIER_nondet_uchar() [L159] input_278 = __VERIFIER_nondet_uchar() [L160] input_284 = __VERIFIER_nondet_uchar() [L161] input_289 = __VERIFIER_nondet_uchar() [L162] input_290 = __VERIFIER_nondet_uchar() [L163] input_291 = __VERIFIER_nondet_uchar() [L164] input_300 = __VERIFIER_nondet_uchar() [L165] input_301 = __VERIFIER_nondet_uchar() [L166] input_302 = __VERIFIER_nondet_uchar() [L167] input_323 = __VERIFIER_nondet_uchar() [L168] input_330 = __VERIFIER_nondet_uchar() [L169] input_336 = __VERIFIER_nondet_uchar() [L172] SORT_1 var_11_arg_0 = state_8; [L173] var_11_arg_0 = var_11_arg_0 & mask_SORT_1 [L174] SORT_10 var_11 = var_11_arg_0; [L175] SORT_10 var_13_arg_0 = var_11; [L176] SORT_10 var_13_arg_1 = var_12; [L177] SORT_1 var_13 = var_13_arg_0 == var_13_arg_1; [L178] SORT_1 var_14_arg_0 = var_13; [L179] SORT_1 var_14 = ~var_14_arg_0; [L180] SORT_1 var_17_arg_0 = state_15; [L181] var_17_arg_0 = var_17_arg_0 & mask_SORT_1 [L182] SORT_10 var_17 = var_17_arg_0; [L183] SORT_10 var_18_arg_0 = var_17; [L184] SORT_10 var_18_arg_1 = var_12; [L185] SORT_1 var_18 = var_18_arg_0 == var_18_arg_1; [L186] SORT_1 var_19_arg_0 = var_14; [L187] SORT_1 var_19_arg_1 = var_18; [L188] SORT_1 var_19 = var_19_arg_0 | var_19_arg_1; [L189] SORT_20 var_24_arg_0 = state_22; [L190] SORT_1 var_24 = var_24_arg_0 >> 3; [L191] SORT_1 var_25_arg_0 = var_24; [L192] var_25_arg_0 = var_25_arg_0 & mask_SORT_1 [L193] SORT_10 var_25 = var_25_arg_0; [L194] SORT_10 var_27_arg_0 = var_25; [L195] SORT_10 var_27_arg_1 = var_26; [L196] SORT_1 var_27 = var_27_arg_0 == var_27_arg_1; [L197] SORT_1 var_28_arg_0 = var_19; [L198] SORT_1 var_28_arg_1 = var_27; [L199] SORT_1 var_28 = var_28_arg_0 & var_28_arg_1; [L200] SORT_29 var_34_arg_0 = state_31; [L201] SORT_33 var_34 = var_34_arg_0 >> 8; [L202] SORT_33 var_35_arg_0 = var_34; [L203] var_35_arg_0 = var_35_arg_0 & mask_SORT_33 [L204] SORT_10 var_35 = var_35_arg_0; [L205] SORT_10 var_36_arg_0 = var_35; [L206] SORT_10 var_36_arg_1 = var_26; [L207] SORT_1 var_36 = var_36_arg_0 == var_36_arg_1; [L208] SORT_1 var_37_arg_0 = var_28; [L209] SORT_1 var_37_arg_1 = var_36; [L210] SORT_1 var_37 = var_37_arg_0 & var_37_arg_1; [L211] SORT_1 var_40_arg_0 = state_38; [L212] var_40_arg_0 = var_40_arg_0 & mask_SORT_1 [L213] SORT_10 var_40 = var_40_arg_0; [L214] SORT_10 var_41_arg_0 = var_40; [L215] SORT_10 var_41_arg_1 = var_12; [L216] SORT_1 var_41 = var_41_arg_0 == var_41_arg_1; [L217] SORT_1 var_42_arg_0 = var_41; [L218] SORT_1 var_42 = ~var_42_arg_0; [L219] SORT_1 var_45_arg_0 = state_43; [L220] var_45_arg_0 = var_45_arg_0 & mask_SORT_1 [L221] SORT_10 var_45 = var_45_arg_0; [L222] SORT_10 var_46_arg_0 = var_45; [L223] SORT_10 var_46_arg_1 = var_12; [L224] SORT_1 var_46 = var_46_arg_0 == var_46_arg_1; [L225] SORT_1 var_47_arg_0 = var_42; [L226] SORT_1 var_47_arg_1 = var_46; [L227] SORT_1 var_47 = var_47_arg_0 | var_47_arg_1; [L228] SORT_1 var_48_arg_0 = var_37; [L229] SORT_1 var_48_arg_1 = var_47; [L230] SORT_1 var_48 = var_48_arg_0 & var_48_arg_1; [L231] SORT_20 var_51_arg_0 = state_22; [L232] SORT_20 var_51_arg_1 = state_49; [L233] SORT_1 var_51 = var_51_arg_0 == var_51_arg_1; [L234] SORT_1 var_52_arg_0 = var_48; [L235] SORT_1 var_52_arg_1 = var_51; [L236] SORT_1 var_52 = var_52_arg_0 & var_52_arg_1; [L237] SORT_1 var_53_arg_0 = state_15; [L238] var_53_arg_0 = var_53_arg_0 & mask_SORT_1 [L239] SORT_10 var_53 = var_53_arg_0; [L240] SORT_10 var_54_arg_0 = var_53; [L241] SORT_10 var_54_arg_1 = var_12; [L242] SORT_1 var_54 = var_54_arg_0 == var_54_arg_1; [L243] SORT_1 var_55_arg_0 = var_54; [L244] SORT_1 var_55 = ~var_55_arg_0; [L245] SORT_1 var_56_arg_0 = state_8; [L246] var_56_arg_0 = var_56_arg_0 & mask_SORT_1 [L247] SORT_10 var_56 = var_56_arg_0; [L248] SORT_10 var_57_arg_0 = var_56; [L249] SORT_10 var_57_arg_1 = var_12; [L250] SORT_1 var_57 = var_57_arg_0 == var_57_arg_1; [L251] SORT_1 var_58_arg_0 = var_55; [L252] SORT_1 var_58_arg_1 = var_57; [L253] SORT_1 var_58 = var_58_arg_0 | var_58_arg_1; [L254] SORT_1 var_59_arg_0 = var_52; [L255] SORT_1 var_59_arg_1 = var_58; [L256] SORT_1 var_59 = var_59_arg_0 & var_59_arg_1; [L257] SORT_1 var_62_arg_0 = state_60; [L258] var_62_arg_0 = var_62_arg_0 & mask_SORT_1 [L259] SORT_10 var_62 = var_62_arg_0; [L260] SORT_10 var_63_arg_0 = var_62; [L261] SORT_10 var_63_arg_1 = var_26; [L262] SORT_1 var_63 = var_63_arg_0 == var_63_arg_1; [L263] SORT_1 var_66_arg_0 = state_64; [L264] var_66_arg_0 = var_66_arg_0 & mask_SORT_1 [L265] SORT_10 var_66 = var_66_arg_0; [L266] SORT_10 var_67_arg_0 = var_66; [L267] SORT_10 var_67_arg_1 = var_26; [L268] SORT_1 var_67 = var_67_arg_0 == var_67_arg_1; [L269] SORT_1 var_68_arg_0 = var_63; [L270] SORT_1 var_68_arg_1 = var_67; [L271] SORT_1 var_68 = var_68_arg_0 | var_68_arg_1; [L272] SORT_1 var_69_arg_0 = var_59; [L273] SORT_1 var_69_arg_1 = var_68; [L274] SORT_1 var_69 = var_69_arg_0 & var_69_arg_1; [L275] SORT_1 var_70_arg_0 = state_60; [L276] var_70_arg_0 = var_70_arg_0 & mask_SORT_1 [L277] SORT_10 var_70 = var_70_arg_0; [L278] SORT_10 var_71_arg_0 = var_70; [L279] SORT_10 var_71_arg_1 = var_26; [L280] SORT_1 var_71 = var_71_arg_0 == var_71_arg_1; [L281] SORT_1 var_74_arg_0 = state_72; [L282] var_74_arg_0 = var_74_arg_0 & mask_SORT_1 [L283] SORT_10 var_74 = var_74_arg_0; [L284] SORT_10 var_75_arg_0 = var_74; [L285] SORT_10 var_75_arg_1 = var_26; [L286] SORT_1 var_75 = var_75_arg_0 == var_75_arg_1; [L287] SORT_1 var_76_arg_0 = var_71; [L288] SORT_1 var_76_arg_1 = var_75; [L289] SORT_1 var_76 = var_76_arg_0 | var_76_arg_1; [L290] SORT_1 var_77_arg_0 = var_69; [L291] SORT_1 var_77_arg_1 = var_76; [L292] SORT_1 var_77 = var_77_arg_0 & var_77_arg_1; [L293] SORT_1 var_78_arg_0 = state_64; [L294] var_78_arg_0 = var_78_arg_0 & mask_SORT_1 [L295] SORT_10 var_78 = var_78_arg_0; [L296] SORT_10 var_79_arg_0 = var_78; [L297] SORT_10 var_79_arg_1 = var_26; [L298] SORT_1 var_79 = var_79_arg_0 == var_79_arg_1; [L299] SORT_1 var_80_arg_0 = state_72; [L300] var_80_arg_0 = var_80_arg_0 & mask_SORT_1 [L301] SORT_10 var_80 = var_80_arg_0; [L302] SORT_10 var_81_arg_0 = var_80; [L303] SORT_10 var_81_arg_1 = var_26; [L304] SORT_1 var_81 = var_81_arg_0 == var_81_arg_1; [L305] SORT_1 var_82_arg_0 = var_79; [L306] SORT_1 var_82_arg_1 = var_81; [L307] SORT_1 var_82 = var_82_arg_0 | var_82_arg_1; [L308] SORT_1 var_83_arg_0 = var_77; [L309] SORT_1 var_83_arg_1 = var_82; [L310] SORT_1 var_83 = var_83_arg_0 & var_83_arg_1; [L311] SORT_1 var_84_arg_0 = state_8; [L312] var_84_arg_0 = var_84_arg_0 & mask_SORT_1 [L313] SORT_10 var_84 = var_84_arg_0; [L314] SORT_10 var_85_arg_0 = var_84; [L315] SORT_10 var_85_arg_1 = var_26; [L316] SORT_1 var_85 = var_85_arg_0 == var_85_arg_1; [L317] SORT_1 var_88_arg_0 = state_86; [L318] var_88_arg_0 = var_88_arg_0 & mask_SORT_1 [L319] SORT_10 var_88 = var_88_arg_0; [L320] SORT_10 var_89_arg_0 = var_88; [L321] SORT_10 var_89_arg_1 = var_26; [L322] SORT_1 var_89 = var_89_arg_0 == var_89_arg_1; [L323] SORT_1 var_90_arg_0 = var_85; [L324] SORT_1 var_90_arg_1 = var_89; [L325] SORT_1 var_90 = var_90_arg_0 | var_90_arg_1; [L326] SORT_1 var_91_arg_0 = var_83; [L327] SORT_1 var_91_arg_1 = var_90; [L328] SORT_1 var_91 = var_91_arg_0 & var_91_arg_1; [L329] SORT_1 var_92_arg_0 = state_8; [L330] var_92_arg_0 = var_92_arg_0 & mask_SORT_1 [L331] SORT_10 var_92 = var_92_arg_0; [L332] SORT_10 var_93_arg_0 = var_92; [L333] SORT_10 var_93_arg_1 = var_26; [L334] SORT_1 var_93 = var_93_arg_0 == var_93_arg_1; [L335] SORT_1 var_94_arg_0 = state_72; [L336] var_94_arg_0 = var_94_arg_0 & mask_SORT_1 [L337] SORT_10 var_94 = var_94_arg_0; [L338] SORT_10 var_95_arg_0 = var_94; [L339] SORT_10 var_95_arg_1 = var_26; [L340] SORT_1 var_95 = var_95_arg_0 == var_95_arg_1; [L341] SORT_1 var_96_arg_0 = var_93; [L342] SORT_1 var_96_arg_1 = var_95; [L343] SORT_1 var_96 = var_96_arg_0 | var_96_arg_1; [L344] SORT_1 var_97_arg_0 = var_91; [L345] SORT_1 var_97_arg_1 = var_96; [L346] SORT_1 var_97 = var_97_arg_0 & var_97_arg_1; [L347] SORT_1 var_98_arg_0 = state_8; [L348] var_98_arg_0 = var_98_arg_0 & mask_SORT_1 [L349] SORT_10 var_98 = var_98_arg_0; [L350] SORT_10 var_99_arg_0 = var_98; [L351] SORT_10 var_99_arg_1 = var_26; [L352] SORT_1 var_99 = var_99_arg_0 == var_99_arg_1; [L353] SORT_1 var_102_arg_0 = state_100; [L354] var_102_arg_0 = var_102_arg_0 & mask_SORT_1 [L355] SORT_10 var_102 = var_102_arg_0; [L356] SORT_10 var_103_arg_0 = var_102; [L357] SORT_10 var_103_arg_1 = var_26; [L358] SORT_1 var_103 = var_103_arg_0 == var_103_arg_1; [L359] SORT_1 var_104_arg_0 = var_99; [L360] SORT_1 var_104_arg_1 = var_103; [L361] SORT_1 var_104 = var_104_arg_0 | var_104_arg_1; [L362] SORT_1 var_105_arg_0 = var_97; [L363] SORT_1 var_105_arg_1 = var_104; [L364] SORT_1 var_105 = var_105_arg_0 & var_105_arg_1; [L365] SORT_1 var_106_arg_0 = state_72; [L366] var_106_arg_0 = var_106_arg_0 & mask_SORT_1 [L367] SORT_10 var_106 = var_106_arg_0; [L368] SORT_10 var_107_arg_0 = var_106; [L369] SORT_10 var_107_arg_1 = var_26; [L370] SORT_1 var_107 = var_107_arg_0 == var_107_arg_1; [L371] SORT_1 var_108_arg_0 = state_86; [L372] var_108_arg_0 = var_108_arg_0 & mask_SORT_1 [L373] SORT_10 var_108 = var_108_arg_0; [L374] SORT_10 var_109_arg_0 = var_108; [L375] SORT_10 var_109_arg_1 = var_26; [L376] SORT_1 var_109 = var_109_arg_0 == var_109_arg_1; [L377] SORT_1 var_110_arg_0 = var_107; [L378] SORT_1 var_110_arg_1 = var_109; [L379] SORT_1 var_110 = var_110_arg_0 | var_110_arg_1; [L380] SORT_1 var_111_arg_0 = var_105; [L381] SORT_1 var_111_arg_1 = var_110; [L382] SORT_1 var_111 = var_111_arg_0 & var_111_arg_1; [L383] SORT_1 var_112_arg_0 = state_86; [L384] var_112_arg_0 = var_112_arg_0 & mask_SORT_1 [L385] SORT_10 var_112 = var_112_arg_0; [L386] SORT_10 var_113_arg_0 = var_112; [L387] SORT_10 var_113_arg_1 = var_26; [L388] SORT_1 var_113 = var_113_arg_0 == var_113_arg_1; [L389] SORT_1 var_114_arg_0 = var_113; [L390] SORT_1 var_114 = ~var_114_arg_0; [L391] SORT_1 var_115_arg_0 = state_100; [L392] var_115_arg_0 = var_115_arg_0 & mask_SORT_1 [L393] SORT_10 var_115 = var_115_arg_0; [L394] SORT_10 var_116_arg_0 = var_115; [L395] SORT_10 var_116_arg_1 = var_26; [L396] SORT_1 var_116 = var_116_arg_0 == var_116_arg_1; [L397] SORT_1 var_117_arg_0 = var_114; [L398] SORT_1 var_117_arg_1 = var_116; [L399] SORT_1 var_117 = var_117_arg_0 | var_117_arg_1; [L400] SORT_1 var_118_arg_0 = var_111; [L401] SORT_1 var_118_arg_1 = var_117; [L402] SORT_1 var_118 = var_118_arg_0 & var_118_arg_1; [L403] SORT_1 var_119_arg_0 = state_100; [L404] var_119_arg_0 = var_119_arg_0 & mask_SORT_1 [L405] SORT_10 var_119 = var_119_arg_0; [L406] SORT_10 var_120_arg_0 = var_119; [L407] SORT_10 var_120_arg_1 = var_12; [L408] SORT_1 var_120 = var_120_arg_0 == var_120_arg_1; [L409] SORT_1 var_121_arg_0 = var_120; [L410] SORT_1 var_121 = ~var_121_arg_0; [L411] SORT_1 var_125_arg_0 = state_123; [L412] var_125_arg_0 = var_125_arg_0 & mask_SORT_1 [L413] SORT_20 var_125 = var_125_arg_0; [L414] SORT_20 var_127_arg_0 = var_125; [L415] SORT_20 var_127_arg_1 = var_126; [L416] SORT_1 var_127 = var_127_arg_0 == var_127_arg_1; [L417] SORT_1 var_128_arg_0 = var_121; [L418] SORT_1 var_128_arg_1 = var_127; [L419] SORT_1 var_128 = var_128_arg_0 | var_128_arg_1; [L420] SORT_1 var_129_arg_0 = var_118; [L421] SORT_1 var_129_arg_1 = var_128; [L422] SORT_1 var_129 = var_129_arg_0 & var_129_arg_1; [L423] SORT_1 var_132_arg_0 = state_130; [L424] var_132_arg_0 = var_132_arg_0 & mask_SORT_1 [L425] SORT_10 var_132 = var_132_arg_0; [L426] SORT_10 var_133_arg_0 = var_132; [L427] SORT_10 var_133_arg_1 = var_12; [L428] SORT_1 var_133 = var_133_arg_0 == var_133_arg_1; [L429] SORT_1 var_134_arg_0 = var_133; [L430] SORT_1 var_134 = ~var_134_arg_0; [L431] SORT_1 var_137_arg_0 = state_135; [L432] var_137_arg_0 = var_137_arg_0 & mask_SORT_1 [L433] SORT_10 var_137 = var_137_arg_0; [L434] SORT_10 var_138_arg_0 = var_137; [L435] SORT_10 var_138_arg_1 = var_12; [L436] SORT_1 var_138 = var_138_arg_0 == var_138_arg_1; [L437] SORT_1 var_139_arg_0 = var_134; [L438] SORT_1 var_139_arg_1 = var_138; [L439] SORT_1 var_139 = var_139_arg_0 | var_139_arg_1; [L440] SORT_1 var_140_arg_0 = var_129; [L441] SORT_1 var_140_arg_1 = var_139; [L442] SORT_1 var_140 = var_140_arg_0 & var_140_arg_1; [L443] SORT_1 var_143_arg_0 = state_141; [L444] var_143_arg_0 = var_143_arg_0 & mask_SORT_1 [L445] SORT_10 var_143 = var_143_arg_0; [L446] SORT_10 var_144_arg_0 = var_143; [L447] SORT_10 var_144_arg_1 = var_26; [L448] SORT_1 var_144 = var_144_arg_0 == var_144_arg_1; [L449] SORT_1 var_145_arg_0 = var_144; [L450] SORT_1 var_145 = ~var_145_arg_0; [L451] SORT_1 var_146_arg_0 = state_135; [L452] var_146_arg_0 = var_146_arg_0 & mask_SORT_1 [L453] SORT_10 var_146 = var_146_arg_0; [L454] SORT_10 var_147_arg_0 = var_146; [L455] SORT_10 var_147_arg_1 = var_26; [L456] SORT_1 var_147 = var_147_arg_0 == var_147_arg_1; [L457] SORT_1 var_148_arg_0 = var_145; [L458] SORT_1 var_148_arg_1 = var_147; [L459] SORT_1 var_148 = var_148_arg_0 | var_148_arg_1; [L460] SORT_1 var_149_arg_0 = var_140; [L461] SORT_1 var_149_arg_1 = var_148; [L462] SORT_1 var_149 = var_149_arg_0 & var_149_arg_1; [L463] SORT_1 var_150_arg_0 = state_38; [L464] var_150_arg_0 = var_150_arg_0 & mask_SORT_1 [L465] SORT_10 var_150 = var_150_arg_0; [L466] SORT_10 var_151_arg_0 = var_150; [L467] SORT_10 var_151_arg_1 = var_12; [L468] SORT_1 var_151 = var_151_arg_0 == var_151_arg_1; [L469] SORT_1 var_152_arg_0 = var_151; [L470] SORT_1 var_152 = ~var_152_arg_0; [L471] SORT_1 var_155_arg_0 = state_153; [L472] var_155_arg_0 = var_155_arg_0 & mask_SORT_1 [L473] SORT_10 var_155 = var_155_arg_0; [L474] SORT_10 var_156_arg_0 = var_155; [L475] SORT_10 var_156_arg_1 = var_12; [L476] SORT_1 var_156 = var_156_arg_0 == var_156_arg_1; [L477] SORT_1 var_157_arg_0 = var_152; [L478] SORT_1 var_157_arg_1 = var_156; [L479] SORT_1 var_157 = var_157_arg_0 | var_157_arg_1; [L480] SORT_1 var_158_arg_0 = var_149; [L481] SORT_1 var_158_arg_1 = var_157; [L482] SORT_1 var_158 = var_158_arg_0 & var_158_arg_1; [L483] SORT_1 var_159_arg_0 = state_153; [L484] var_159_arg_0 = var_159_arg_0 & mask_SORT_1 [L485] SORT_10 var_159 = var_159_arg_0; [L486] SORT_10 var_160_arg_0 = var_159; [L487] SORT_10 var_160_arg_1 = var_12; [L488] SORT_1 var_160 = var_160_arg_0 == var_160_arg_1; [L489] SORT_1 var_161_arg_0 = var_160; [L490] SORT_1 var_161 = ~var_161_arg_0; [L491] SORT_1 var_162_arg_0 = state_15; [L492] var_162_arg_0 = var_162_arg_0 & mask_SORT_1 [L493] SORT_10 var_162 = var_162_arg_0; [L494] SORT_10 var_163_arg_0 = var_162; [L495] SORT_10 var_163_arg_1 = var_12; [L496] SORT_1 var_163 = var_163_arg_0 == var_163_arg_1; [L497] SORT_1 var_164_arg_0 = var_161; [L498] SORT_1 var_164_arg_1 = var_163; [L499] SORT_1 var_164 = var_164_arg_0 | var_164_arg_1; [L500] SORT_1 var_165_arg_0 = var_158; [L501] SORT_1 var_165_arg_1 = var_164; [L502] SORT_1 var_165 = var_165_arg_0 & var_165_arg_1; [L503] SORT_1 var_168_arg_0 = state_166; [L504] var_168_arg_0 = var_168_arg_0 & mask_SORT_1 [L505] SORT_10 var_168 = var_168_arg_0; [L506] SORT_10 var_169_arg_0 = var_168; [L507] SORT_10 var_169_arg_1 = var_12; [L508] SORT_1 var_169 = var_169_arg_0 == var_169_arg_1; [L509] SORT_1 var_170_arg_0 = var_169; [L510] SORT_1 var_170 = ~var_170_arg_0; [L511] SORT_1 var_171_arg_0 = state_43; [L512] var_171_arg_0 = var_171_arg_0 & mask_SORT_1 [L513] SORT_10 var_171 = var_171_arg_0; [L514] SORT_10 var_172_arg_0 = var_171; [L515] SORT_10 var_172_arg_1 = var_12; [L516] SORT_1 var_172 = var_172_arg_0 == var_172_arg_1; [L517] SORT_1 var_173_arg_0 = var_170; [L518] SORT_1 var_173_arg_1 = var_172; [L519] SORT_1 var_173 = var_173_arg_0 | var_173_arg_1; [L520] SORT_1 var_174_arg_0 = var_165; [L521] SORT_1 var_174_arg_1 = var_173; [L522] SORT_1 var_174 = var_174_arg_0 & var_174_arg_1; [L523] SORT_1 var_175_arg_0 = state_130; [L524] var_175_arg_0 = var_175_arg_0 & mask_SORT_1 [L525] SORT_10 var_175 = var_175_arg_0; [L526] SORT_10 var_176_arg_0 = var_175; [L527] SORT_10 var_176_arg_1 = var_26; [L528] SORT_1 var_176 = var_176_arg_0 == var_176_arg_1; [L529] SORT_1 var_179_arg_0 = state_177; [L530] var_179_arg_0 = var_179_arg_0 & mask_SORT_1 [L531] SORT_10 var_179 = var_179_arg_0; [L532] SORT_10 var_180_arg_0 = var_179; [L533] SORT_10 var_180_arg_1 = var_26; [L534] SORT_1 var_180 = var_180_arg_0 == var_180_arg_1; [L535] SORT_1 var_181_arg_0 = var_176; [L536] SORT_1 var_181_arg_1 = var_180; [L537] SORT_1 var_181 = var_181_arg_0 | var_181_arg_1; [L538] SORT_1 var_182_arg_0 = var_174; [L539] SORT_1 var_182_arg_1 = var_181; [L540] SORT_1 var_182 = var_182_arg_0 & var_182_arg_1; [L541] SORT_3 var_186_arg_0 = state_184; [L542] var_186_arg_0 = var_186_arg_0 & mask_SORT_3 [L543] SORT_10 var_186 = var_186_arg_0; [L544] SORT_10 var_187_arg_0 = var_186; [L545] SORT_10 var_187_arg_1 = var_26; [L546] SORT_1 var_187 = var_187_arg_0 == var_187_arg_1; [L547] SORT_1 var_188_arg_0 = state_15; [L548] var_188_arg_0 = var_188_arg_0 & mask_SORT_1 [L549] SORT_10 var_188 = var_188_arg_0; [L550] SORT_10 var_189_arg_0 = var_188; [L551] SORT_10 var_189_arg_1 = var_12; [L552] SORT_1 var_189 = var_189_arg_0 == var_189_arg_1; [L553] SORT_1 var_190_arg_0 = var_187; [L554] SORT_1 var_190_arg_1 = var_189; [L555] SORT_1 var_190 = var_190_arg_0 | var_190_arg_1; [L556] SORT_1 var_191_arg_0 = var_182; [L557] SORT_1 var_191_arg_1 = var_190; [L558] SORT_1 var_191 = var_191_arg_0 & var_191_arg_1; [L559] SORT_1 var_194_arg_0 = var_191; [L560] SORT_1 var_194 = ~var_194_arg_0; [L561] SORT_1 var_195_arg_0 = var_122; [L562] SORT_1 var_195_arg_1 = var_194; [L563] SORT_1 var_195 = var_195_arg_0 & var_195_arg_1; [L564] var_195 = var_195 & mask_SORT_1 [L565] SORT_1 bad_196_arg_0 = var_195; [L566] CALL __VERIFIER_assert(!(bad_196_arg_0)) [L20] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L20] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 125 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 12.9s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=125occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 6.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 5 NumberOfCodeBlocks, 5 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-02 21:04:14,275 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/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_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.itc99_b13.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash a98e282f97a500bd5508bb46aaa1001023120ce878501f3889727b27d17dfa18 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-02 21:04:16,833 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 21:04:16,836 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 21:04:16,885 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 21:04:16,885 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 21:04:16,889 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 21:04:16,892 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 21:04:16,897 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 21:04:16,904 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 21:04:16,909 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 21:04:16,910 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 21:04:16,913 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 21:04:16,913 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 21:04:16,916 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 21:04:16,917 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 21:04:16,919 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 21:04:16,920 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 21:04:16,921 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 21:04:16,923 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 21:04:16,930 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 21:04:16,932 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 21:04:16,933 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 21:04:16,936 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 21:04:16,938 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 21:04:16,947 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 21:04:16,947 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 21:04:16,948 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 21:04:16,950 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 21:04:16,951 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 21:04:16,952 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 21:04:16,952 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 21:04:16,953 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 21:04:16,955 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 21:04:16,956 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 21:04:16,957 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 21:04:16,958 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 21:04:16,959 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 21:04:16,959 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 21:04:16,959 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 21:04:16,961 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 21:04:16,962 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 21:04:16,967 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-11-02 21:04:17,015 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 21:04:17,015 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 21:04:17,016 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 21:04:17,016 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 21:04:17,017 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 21:04:17,017 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 21:04:17,019 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 21:04:17,019 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 21:04:17,019 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 21:04:17,020 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 21:04:17,021 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 21:04:17,021 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 21:04:17,021 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 21:04:17,022 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 21:04:17,022 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-02 21:04:17,022 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-02 21:04:17,023 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-02 21:04:17,023 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 21:04:17,023 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 21:04:17,023 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 21:04:17,024 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 21:04:17,024 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 21:04:17,024 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 21:04:17,024 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:04:17,025 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 21:04:17,025 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 21:04:17,025 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 21:04:17,026 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-02 21:04:17,026 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-02 21:04:17,026 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 21:04:17,026 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 21:04:17,027 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 21:04:17,027 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-02 21:04:17,027 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_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a98e282f97a500bd5508bb46aaa1001023120ce878501f3889727b27d17dfa18 [2022-11-02 21:04:17,432 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 21:04:17,459 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 21:04:17,463 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 21:04:17,464 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 21:04:17,467 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 21:04:17,468 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.itc99_b13.c [2022-11-02 21:04:17,541 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/data/2b170d15e/7f9f614f135a491489d2d346622cee4f/FLAG616cc7998 [2022-11-02 21:04:18,266 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 21:04:18,267 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.itc99_b13.c [2022-11-02 21:04:18,281 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/data/2b170d15e/7f9f614f135a491489d2d346622cee4f/FLAG616cc7998 [2022-11-02 21:04:18,462 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/data/2b170d15e/7f9f614f135a491489d2d346622cee4f [2022-11-02 21:04:18,465 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 21:04:18,466 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 21:04:18,468 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 21:04:18,468 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 21:04:18,473 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 21:04:18,474 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:04:18" (1/1) ... [2022-11-02 21:04:18,475 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72562891 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:04:18, skipping insertion in model container [2022-11-02 21:04:18,476 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:04:18" (1/1) ... [2022-11-02 21:04:18,485 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 21:04:18,548 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 21:04:18,718 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.itc99_b13.c[1107,1120] [2022-11-02 21:04:19,026 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:04:19,030 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 21:04:19,043 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.itc99_b13.c[1107,1120] [2022-11-02 21:04:19,165 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:04:19,178 INFO L208 MainTranslator]: Completed translation [2022-11-02 21:04:19,178 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:04:19 WrapperNode [2022-11-02 21:04:19,178 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 21:04:19,179 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 21:04:19,180 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 21:04:19,180 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 21:04:19,187 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:04:19" (1/1) ... [2022-11-02 21:04:19,208 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:04:19" (1/1) ... [2022-11-02 21:04:19,280 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1147 [2022-11-02 21:04:19,280 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 21:04:19,281 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 21:04:19,281 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 21:04:19,281 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 21:04:19,290 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:04:19" (1/1) ... [2022-11-02 21:04:19,291 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:04:19" (1/1) ... [2022-11-02 21:04:19,300 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:04:19" (1/1) ... [2022-11-02 21:04:19,300 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:04:19" (1/1) ... [2022-11-02 21:04:19,320 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:04:19" (1/1) ... [2022-11-02 21:04:19,327 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:04:19" (1/1) ... [2022-11-02 21:04:19,331 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:04:19" (1/1) ... [2022-11-02 21:04:19,336 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:04:19" (1/1) ... [2022-11-02 21:04:19,344 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 21:04:19,345 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 21:04:19,345 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 21:04:19,346 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 21:04:19,346 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:04:19" (1/1) ... [2022-11-02 21:04:19,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:04:19,365 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:04:19,377 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 21:04:19,430 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 21:04:19,448 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 21:04:19,448 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 21:04:19,839 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 21:04:19,841 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 21:04:21,221 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 21:04:21,232 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 21:04:21,233 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-02 21:04:21,238 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:04:21 BoogieIcfgContainer [2022-11-02 21:04:21,239 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 21:04:21,244 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 21:04:21,245 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 21:04:21,249 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 21:04:21,249 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 09:04:18" (1/3) ... [2022-11-02 21:04:21,250 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f64b102 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:04:21, skipping insertion in model container [2022-11-02 21:04:21,250 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:04:19" (2/3) ... [2022-11-02 21:04:21,251 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f64b102 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:04:21, skipping insertion in model container [2022-11-02 21:04:21,251 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:04:21" (3/3) ... [2022-11-02 21:04:21,253 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.itc99_b13.c [2022-11-02 21:04:21,275 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 21:04:21,275 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 21:04:21,377 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 21:04:21,385 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;@2077cbc7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 21:04:21,386 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 21:04:21,391 INFO L276 IsEmpty]: Start isEmpty. Operand has 125 states, 123 states have (on average 1.4959349593495934) internal successors, (184), 124 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:21,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-02 21:04:21,399 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:04:21,399 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-02 21:04:21,400 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:04:21,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:04:21,407 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-11-02 21:04:21,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:04:21,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1632479120] [2022-11-02 21:04:21,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:21,426 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:04:21,426 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:04:21,431 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:04:21,436 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-02 21:04:21,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:21,971 WARN L261 TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 277 conjunts are in the unsatisfiable core [2022-11-02 21:04:21,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:04:27,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:04:27,553 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:04:27,554 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:04:27,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1632479120] [2022-11-02 21:04:27,555 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1632479120] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:04:27,556 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:04:27,556 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:04:27,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777120951] [2022-11-02 21:04:27,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:04:27,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:04:27,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:04:27,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:04:27,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:04:27,614 INFO L87 Difference]: Start difference. First operand has 125 states, 123 states have (on average 1.4959349593495934) internal successors, (184), 124 states have internal predecessors, (184), 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) [2022-11-02 21:04:28,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:04:28,263 INFO L93 Difference]: Finished difference Result 362 states and 543 transitions. [2022-11-02 21:04:28,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:04:28,268 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 [2022-11-02 21:04:28,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:04:28,281 INFO L225 Difference]: With dead ends: 362 [2022-11-02 21:04:28,288 INFO L226 Difference]: Without dead ends: 239 [2022-11-02 21:04:28,292 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:04:28,298 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 345 mSDsluCounter, 310 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 345 SdHoareTripleChecker+Valid, 446 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-02 21:04:28,301 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [345 Valid, 446 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-02 21:04:28,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2022-11-02 21:04:28,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 123. [2022-11-02 21:04:28,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 122 states have (on average 1.4754098360655739) internal successors, (180), 122 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:28,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 180 transitions. [2022-11-02 21:04:28,364 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 180 transitions. Word has length 5 [2022-11-02 21:04:28,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:04:28,365 INFO L495 AbstractCegarLoop]: Abstraction has 123 states and 180 transitions. [2022-11-02 21:04:28,365 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) [2022-11-02 21:04:28,365 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 180 transitions. [2022-11-02 21:04:28,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-02 21:04:28,369 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:04:28,370 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 21:04:28,382 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-02 21:04:28,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:04:28,574 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:04:28,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:04:28,575 INFO L85 PathProgramCache]: Analyzing trace with hash 1660830703, now seen corresponding path program 1 times [2022-11-02 21:04:28,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:04:28,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1749701414] [2022-11-02 21:04:28,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:28,579 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:04:28,579 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:04:28,581 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:04:28,614 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-02 21:04:29,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:29,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 1257 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 21:04:29,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:04:29,265 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:04:29,270 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:04:29,271 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:04:29,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1749701414] [2022-11-02 21:04:29,272 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1749701414] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:04:29,272 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:04:29,272 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:04:29,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106493743] [2022-11-02 21:04:29,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:04:29,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:04:29,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:04:29,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:04:29,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:04:29,283 INFO L87 Difference]: Start difference. First operand 123 states and 180 transitions. Second operand has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:29,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:04:29,445 INFO L93 Difference]: Finished difference Result 475 states and 702 transitions. [2022-11-02 21:04:29,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:04:29,455 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 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 122 [2022-11-02 21:04:29,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:04:29,457 INFO L225 Difference]: With dead ends: 475 [2022-11-02 21:04:29,457 INFO L226 Difference]: Without dead ends: 356 [2022-11-02 21:04:29,458 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:04:29,459 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 513 mSDsluCounter, 513 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 513 SdHoareTripleChecker+Valid, 690 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:04:29,460 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [513 Valid, 690 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:04:29,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2022-11-02 21:04:29,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 125. [2022-11-02 21:04:29,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 124 states have (on average 1.467741935483871) internal successors, (182), 124 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:29,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 182 transitions. [2022-11-02 21:04:29,480 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 182 transitions. Word has length 122 [2022-11-02 21:04:29,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:04:29,480 INFO L495 AbstractCegarLoop]: Abstraction has 125 states and 182 transitions. [2022-11-02 21:04:29,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:29,480 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 182 transitions. [2022-11-02 21:04:29,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-02 21:04:29,483 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:04:29,483 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 21:04:29,516 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-02 21:04:29,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:04:29,699 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:04:29,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:04:29,700 INFO L85 PathProgramCache]: Analyzing trace with hash -61171983, now seen corresponding path program 1 times [2022-11-02 21:04:29,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:04:29,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [813729521] [2022-11-02 21:04:29,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:29,702 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:04:29,702 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:04:29,703 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:04:29,726 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-02 21:04:30,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:30,407 INFO L263 TraceCheckSpWp]: Trace formula consists of 1257 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 21:04:30,417 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:04:30,505 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:04:30,506 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:04:30,506 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:04:30,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [813729521] [2022-11-02 21:04:30,506 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [813729521] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:04:30,506 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:04:30,507 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 21:04:30,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163307157] [2022-11-02 21:04:30,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:04:30,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 21:04:30,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:04:30,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 21:04:30,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 21:04:30,509 INFO L87 Difference]: Start difference. First operand 125 states and 182 transitions. Second operand has 6 states, 6 states have (on average 20.333333333333332) internal successors, (122), 6 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:30,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:04:30,912 INFO L93 Difference]: Finished difference Result 364 states and 535 transitions. [2022-11-02 21:04:30,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 21:04:30,913 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 20.333333333333332) internal successors, (122), 6 states have internal predecessors, (122), 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 122 [2022-11-02 21:04:30,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:04:30,914 INFO L225 Difference]: With dead ends: 364 [2022-11-02 21:04:30,915 INFO L226 Difference]: Without dead ends: 245 [2022-11-02 21:04:30,915 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-02 21:04:30,917 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 512 mSDsluCounter, 658 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 512 SdHoareTripleChecker+Valid, 824 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 21:04:30,917 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [512 Valid, 824 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 21:04:30,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2022-11-02 21:04:30,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 127. [2022-11-02 21:04:30,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 126 states have (on average 1.4603174603174602) internal successors, (184), 126 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:30,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 184 transitions. [2022-11-02 21:04:30,926 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 184 transitions. Word has length 122 [2022-11-02 21:04:30,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:04:30,935 INFO L495 AbstractCegarLoop]: Abstraction has 127 states and 184 transitions. [2022-11-02 21:04:30,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.333333333333332) internal successors, (122), 6 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:30,938 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 184 transitions. [2022-11-02 21:04:30,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-02 21:04:30,944 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:04:30,945 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 21:04:30,974 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-02 21:04:31,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:04:31,168 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:04:31,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:04:31,169 INFO L85 PathProgramCache]: Analyzing trace with hash -1990104209, now seen corresponding path program 1 times [2022-11-02 21:04:31,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:04:31,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1483419579] [2022-11-02 21:04:31,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:31,171 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:04:31,171 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:04:31,172 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:04:31,173 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-02 21:04:31,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:31,870 INFO L263 TraceCheckSpWp]: Trace formula consists of 1257 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 21:04:31,878 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:04:31,917 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:04:31,917 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:04:31,918 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:04:31,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1483419579] [2022-11-02 21:04:31,918 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1483419579] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:04:31,918 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:04:31,918 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:04:31,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380421710] [2022-11-02 21:04:31,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:04:31,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:04:31,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:04:31,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:04:31,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:04:31,921 INFO L87 Difference]: Start difference. First operand 127 states and 184 transitions. Second operand has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:32,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:04:32,132 INFO L93 Difference]: Finished difference Result 475 states and 700 transitions. [2022-11-02 21:04:32,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:04:32,133 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 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 122 [2022-11-02 21:04:32,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:04:32,135 INFO L225 Difference]: With dead ends: 475 [2022-11-02 21:04:32,135 INFO L226 Difference]: Without dead ends: 356 [2022-11-02 21:04:32,136 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:04:32,137 INFO L413 NwaCegarLoop]: 176 mSDtfsCounter, 501 mSDsluCounter, 497 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 501 SdHoareTripleChecker+Valid, 673 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:04:32,138 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [501 Valid, 673 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 21:04:32,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2022-11-02 21:04:32,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 129. [2022-11-02 21:04:32,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 128 states have (on average 1.453125) internal successors, (186), 128 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:32,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 186 transitions. [2022-11-02 21:04:32,150 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 186 transitions. Word has length 122 [2022-11-02 21:04:32,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:04:32,150 INFO L495 AbstractCegarLoop]: Abstraction has 129 states and 186 transitions. [2022-11-02 21:04:32,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:32,151 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 186 transitions. [2022-11-02 21:04:32,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-02 21:04:32,153 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:04:32,153 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 21:04:32,183 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-02 21:04:32,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:04:32,377 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:04:32,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:04:32,378 INFO L85 PathProgramCache]: Analyzing trace with hash -262959247, now seen corresponding path program 1 times [2022-11-02 21:04:32,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:04:32,379 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1824140401] [2022-11-02 21:04:32,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:32,380 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:04:32,380 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:04:32,381 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:04:32,382 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-02 21:04:33,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:33,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 1257 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 21:04:33,138 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:04:33,193 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:04:33,194 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:04:33,194 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:04:33,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1824140401] [2022-11-02 21:04:33,199 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1824140401] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:04:33,200 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:04:33,200 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:04:33,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014850228] [2022-11-02 21:04:33,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:04:33,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:04:33,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:04:33,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:04:33,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:04:33,209 INFO L87 Difference]: Start difference. First operand 129 states and 186 transitions. Second operand has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:33,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:04:33,428 INFO L93 Difference]: Finished difference Result 475 states and 699 transitions. [2022-11-02 21:04:33,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:04:33,429 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 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 122 [2022-11-02 21:04:33,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:04:33,431 INFO L225 Difference]: With dead ends: 475 [2022-11-02 21:04:33,431 INFO L226 Difference]: Without dead ends: 356 [2022-11-02 21:04:33,432 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:04:33,433 INFO L413 NwaCegarLoop]: 178 mSDtfsCounter, 495 mSDsluCounter, 494 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 495 SdHoareTripleChecker+Valid, 672 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:04:33,434 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [495 Valid, 672 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 21:04:33,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2022-11-02 21:04:33,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 131. [2022-11-02 21:04:33,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 130 states have (on average 1.4461538461538461) internal successors, (188), 130 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:33,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 188 transitions. [2022-11-02 21:04:33,447 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 188 transitions. Word has length 122 [2022-11-02 21:04:33,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:04:33,447 INFO L495 AbstractCegarLoop]: Abstraction has 131 states and 188 transitions. [2022-11-02 21:04:33,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:33,448 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 188 transitions. [2022-11-02 21:04:33,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-02 21:04:33,450 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:04:33,451 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 21:04:33,479 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-02 21:04:33,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:04:33,675 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:04:33,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:04:33,676 INFO L85 PathProgramCache]: Analyzing trace with hash -1910322189, now seen corresponding path program 1 times [2022-11-02 21:04:33,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:04:33,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1734353686] [2022-11-02 21:04:33,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:33,678 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:04:33,679 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:04:33,680 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:04:33,681 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-02 21:04:34,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:34,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 1257 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 21:04:34,368 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:04:34,414 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:04:34,415 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:04:34,415 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:04:34,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1734353686] [2022-11-02 21:04:34,416 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1734353686] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:04:34,416 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:04:34,416 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:04:34,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880875265] [2022-11-02 21:04:34,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:04:34,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:04:34,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:04:34,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:04:34,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:04:34,419 INFO L87 Difference]: Start difference. First operand 131 states and 188 transitions. Second operand has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:34,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:04:34,621 INFO L93 Difference]: Finished difference Result 475 states and 698 transitions. [2022-11-02 21:04:34,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:04:34,622 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 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 122 [2022-11-02 21:04:34,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:04:34,624 INFO L225 Difference]: With dead ends: 475 [2022-11-02 21:04:34,624 INFO L226 Difference]: Without dead ends: 356 [2022-11-02 21:04:34,625 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:04:34,626 INFO L413 NwaCegarLoop]: 185 mSDtfsCounter, 484 mSDsluCounter, 492 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 484 SdHoareTripleChecker+Valid, 677 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:04:34,626 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [484 Valid, 677 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 21:04:34,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2022-11-02 21:04:34,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 135. [2022-11-02 21:04:34,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 134 states have (on average 1.4402985074626866) internal successors, (193), 134 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:34,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 193 transitions. [2022-11-02 21:04:34,636 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 193 transitions. Word has length 122 [2022-11-02 21:04:34,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:04:34,636 INFO L495 AbstractCegarLoop]: Abstraction has 135 states and 193 transitions. [2022-11-02 21:04:34,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:34,637 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 193 transitions. [2022-11-02 21:04:34,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-02 21:04:34,639 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:04:34,639 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 21:04:34,666 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-02 21:04:34,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:04:34,863 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:04:34,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:04:34,864 INFO L85 PathProgramCache]: Analyzing trace with hash 242784629, now seen corresponding path program 1 times [2022-11-02 21:04:34,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:04:34,866 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1188267325] [2022-11-02 21:04:34,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:34,866 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:04:34,866 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:04:34,868 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:04:34,877 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-02 21:04:35,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:35,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 1257 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 21:04:35,626 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:04:35,681 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:04:35,681 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:04:35,681 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:04:35,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1188267325] [2022-11-02 21:04:35,682 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1188267325] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:04:35,682 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:04:35,682 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:04:35,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332983870] [2022-11-02 21:04:35,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:04:35,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:04:35,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:04:35,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:04:35,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:04:35,684 INFO L87 Difference]: Start difference. First operand 135 states and 193 transitions. Second operand has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:35,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:04:35,879 INFO L93 Difference]: Finished difference Result 475 states and 697 transitions. [2022-11-02 21:04:35,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:04:35,880 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 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 122 [2022-11-02 21:04:35,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:04:35,882 INFO L225 Difference]: With dead ends: 475 [2022-11-02 21:04:35,883 INFO L226 Difference]: Without dead ends: 356 [2022-11-02 21:04:35,883 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:04:35,884 INFO L413 NwaCegarLoop]: 188 mSDtfsCounter, 473 mSDsluCounter, 482 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 473 SdHoareTripleChecker+Valid, 670 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:04:35,885 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [473 Valid, 670 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 21:04:35,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2022-11-02 21:04:35,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 139. [2022-11-02 21:04:35,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 138 states have (on average 1.434782608695652) internal successors, (198), 138 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:35,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 198 transitions. [2022-11-02 21:04:35,894 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 198 transitions. Word has length 122 [2022-11-02 21:04:35,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:04:35,894 INFO L495 AbstractCegarLoop]: Abstraction has 139 states and 198 transitions. [2022-11-02 21:04:35,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:35,895 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 198 transitions. [2022-11-02 21:04:35,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-02 21:04:35,896 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:04:35,897 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 21:04:35,930 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-02 21:04:36,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:04:36,111 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:04:36,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:04:36,111 INFO L85 PathProgramCache]: Analyzing trace with hash -1790609417, now seen corresponding path program 1 times [2022-11-02 21:04:36,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:04:36,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [943274599] [2022-11-02 21:04:36,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:36,112 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:04:36,113 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:04:36,113 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:04:36,115 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-02 21:04:36,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:36,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 1257 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 21:04:36,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:04:36,899 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:04:36,900 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:04:36,900 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:04:36,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [943274599] [2022-11-02 21:04:36,901 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [943274599] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:04:36,901 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:04:36,901 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:04:36,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765194678] [2022-11-02 21:04:36,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:04:36,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:04:36,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:04:36,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:04:36,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:04:36,903 INFO L87 Difference]: Start difference. First operand 139 states and 198 transitions. Second operand has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:37,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:04:37,060 INFO L93 Difference]: Finished difference Result 475 states and 696 transitions. [2022-11-02 21:04:37,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:04:37,061 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 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 122 [2022-11-02 21:04:37,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:04:37,063 INFO L225 Difference]: With dead ends: 475 [2022-11-02 21:04:37,063 INFO L226 Difference]: Without dead ends: 356 [2022-11-02 21:04:37,063 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:04:37,064 INFO L413 NwaCegarLoop]: 195 mSDtfsCounter, 462 mSDsluCounter, 480 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 462 SdHoareTripleChecker+Valid, 675 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:04:37,065 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [462 Valid, 675 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:04:37,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2022-11-02 21:04:37,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 143. [2022-11-02 21:04:37,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 142 states have (on average 1.4295774647887325) internal successors, (203), 142 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:37,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 203 transitions. [2022-11-02 21:04:37,073 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 203 transitions. Word has length 122 [2022-11-02 21:04:37,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:04:37,074 INFO L495 AbstractCegarLoop]: Abstraction has 143 states and 203 transitions. [2022-11-02 21:04:37,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:37,074 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 203 transitions. [2022-11-02 21:04:37,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-02 21:04:37,076 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:04:37,076 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 21:04:37,110 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-02 21:04:37,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:04:37,303 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:04:37,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:04:37,303 INFO L85 PathProgramCache]: Analyzing trace with hash -759568519, now seen corresponding path program 1 times [2022-11-02 21:04:37,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:04:37,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1294275796] [2022-11-02 21:04:37,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:37,305 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:04:37,305 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:04:37,306 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:04:37,308 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-02 21:04:38,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:38,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 1257 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 21:04:38,058 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:04:38,130 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:04:38,130 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:04:38,131 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:04:38,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1294275796] [2022-11-02 21:04:38,131 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1294275796] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:04:38,131 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:04:38,132 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:04:38,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111002419] [2022-11-02 21:04:38,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:04:38,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:04:38,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:04:38,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:04:38,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:04:38,135 INFO L87 Difference]: Start difference. First operand 143 states and 203 transitions. Second operand has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:38,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:04:38,212 INFO L93 Difference]: Finished difference Result 475 states and 695 transitions. [2022-11-02 21:04:38,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:04:38,213 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 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 122 [2022-11-02 21:04:38,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:04:38,218 INFO L225 Difference]: With dead ends: 475 [2022-11-02 21:04:38,218 INFO L226 Difference]: Without dead ends: 356 [2022-11-02 21:04:38,219 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:04:38,222 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 456 mSDsluCounter, 475 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 456 SdHoareTripleChecker+Valid, 671 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:04:38,223 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [456 Valid, 671 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:04:38,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2022-11-02 21:04:38,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 145. [2022-11-02 21:04:38,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 144 states have (on average 1.4236111111111112) internal successors, (205), 144 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:38,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 205 transitions. [2022-11-02 21:04:38,231 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 205 transitions. Word has length 122 [2022-11-02 21:04:38,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:04:38,232 INFO L495 AbstractCegarLoop]: Abstraction has 145 states and 205 transitions. [2022-11-02 21:04:38,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:38,232 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 205 transitions. [2022-11-02 21:04:38,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-02 21:04:38,234 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:04:38,234 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 21:04:38,264 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-02 21:04:38,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:04:38,458 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:04:38,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:04:38,459 INFO L85 PathProgramCache]: Analyzing trace with hash 841502587, now seen corresponding path program 1 times [2022-11-02 21:04:38,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:04:38,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1047514177] [2022-11-02 21:04:38,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:38,461 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:04:38,461 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:04:38,463 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:04:38,471 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-02 21:04:39,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:39,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 1257 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 21:04:39,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:04:39,296 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:04:39,297 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:04:39,297 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:04:39,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1047514177] [2022-11-02 21:04:39,298 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1047514177] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:04:39,298 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:04:39,298 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:04:39,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276883557] [2022-11-02 21:04:39,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:04:39,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:04:39,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:04:39,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:04:39,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:04:39,300 INFO L87 Difference]: Start difference. First operand 145 states and 205 transitions. Second operand has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:39,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:04:39,481 INFO L93 Difference]: Finished difference Result 475 states and 694 transitions. [2022-11-02 21:04:39,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:04:39,482 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 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 122 [2022-11-02 21:04:39,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:04:39,484 INFO L225 Difference]: With dead ends: 475 [2022-11-02 21:04:39,484 INFO L226 Difference]: Without dead ends: 356 [2022-11-02 21:04:39,485 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:04:39,486 INFO L413 NwaCegarLoop]: 202 mSDtfsCounter, 450 mSDsluCounter, 480 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 450 SdHoareTripleChecker+Valid, 682 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:04:39,486 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [450 Valid, 682 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 21:04:39,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2022-11-02 21:04:39,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 147. [2022-11-02 21:04:39,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 146 states have (on average 1.417808219178082) internal successors, (207), 146 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:39,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 207 transitions. [2022-11-02 21:04:39,494 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 207 transitions. Word has length 122 [2022-11-02 21:04:39,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:04:39,495 INFO L495 AbstractCegarLoop]: Abstraction has 147 states and 207 transitions. [2022-11-02 21:04:39,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:39,495 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 207 transitions. [2022-11-02 21:04:39,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-02 21:04:39,497 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:04:39,497 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 21:04:39,523 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-02 21:04:39,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:04:39,711 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:04:39,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:04:39,711 INFO L85 PathProgramCache]: Analyzing trace with hash -2102079491, now seen corresponding path program 1 times [2022-11-02 21:04:39,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:04:39,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [869112591] [2022-11-02 21:04:39,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:39,713 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:04:39,713 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:04:39,714 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:04:39,721 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-02 21:04:40,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:40,398 INFO L263 TraceCheckSpWp]: Trace formula consists of 1257 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 21:04:40,406 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:04:40,496 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:04:40,496 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:04:40,497 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:04:40,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [869112591] [2022-11-02 21:04:40,497 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [869112591] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:04:40,497 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:04:40,497 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:04:40,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422449168] [2022-11-02 21:04:40,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:04:40,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:04:40,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:04:40,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:04:40,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:04:40,500 INFO L87 Difference]: Start difference. First operand 147 states and 207 transitions. Second operand has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:40,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:04:40,705 INFO L93 Difference]: Finished difference Result 475 states and 693 transitions. [2022-11-02 21:04:40,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:04:40,706 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 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 122 [2022-11-02 21:04:40,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:04:40,707 INFO L225 Difference]: With dead ends: 475 [2022-11-02 21:04:40,708 INFO L226 Difference]: Without dead ends: 356 [2022-11-02 21:04:40,708 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:04:40,709 INFO L413 NwaCegarLoop]: 197 mSDtfsCounter, 444 mSDsluCounter, 463 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 444 SdHoareTripleChecker+Valid, 660 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:04:40,709 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [444 Valid, 660 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 21:04:40,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2022-11-02 21:04:40,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 149. [2022-11-02 21:04:40,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 148 states have (on average 1.412162162162162) internal successors, (209), 148 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:40,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 209 transitions. [2022-11-02 21:04:40,717 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 209 transitions. Word has length 122 [2022-11-02 21:04:40,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:04:40,718 INFO L495 AbstractCegarLoop]: Abstraction has 149 states and 209 transitions. [2022-11-02 21:04:40,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:40,718 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 209 transitions. [2022-11-02 21:04:40,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-02 21:04:40,720 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:04:40,720 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 21:04:40,750 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-11-02 21:04:40,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:04:40,945 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:04:40,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:04:40,945 INFO L85 PathProgramCache]: Analyzing trace with hash 1309378815, now seen corresponding path program 1 times [2022-11-02 21:04:40,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:04:40,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1033645897] [2022-11-02 21:04:40,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:40,947 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:04:40,947 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:04:40,949 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:04:40,993 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-02 21:04:41,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:41,525 INFO L263 TraceCheckSpWp]: Trace formula consists of 1257 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 21:04:41,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:04:41,618 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:04:41,618 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:04:41,618 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:04:41,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1033645897] [2022-11-02 21:04:41,619 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1033645897] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:04:41,619 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:04:41,619 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:04:41,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420704281] [2022-11-02 21:04:41,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:04:41,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:04:41,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:04:41,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:04:41,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:04:41,621 INFO L87 Difference]: Start difference. First operand 149 states and 209 transitions. Second operand has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:41,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:04:41,784 INFO L93 Difference]: Finished difference Result 475 states and 692 transitions. [2022-11-02 21:04:41,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:04:41,784 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 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 122 [2022-11-02 21:04:41,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:04:41,786 INFO L225 Difference]: With dead ends: 475 [2022-11-02 21:04:41,786 INFO L226 Difference]: Without dead ends: 356 [2022-11-02 21:04:41,787 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:04:41,787 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 438 mSDsluCounter, 460 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 438 SdHoareTripleChecker+Valid, 659 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:04:41,788 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [438 Valid, 659 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:04:41,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2022-11-02 21:04:41,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 151. [2022-11-02 21:04:41,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 150 states have (on average 1.4066666666666667) internal successors, (211), 150 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:41,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 211 transitions. [2022-11-02 21:04:41,796 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 211 transitions. Word has length 122 [2022-11-02 21:04:41,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:04:41,796 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 211 transitions. [2022-11-02 21:04:41,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:41,797 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 211 transitions. [2022-11-02 21:04:41,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-02 21:04:41,798 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:04:41,798 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 21:04:41,823 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-11-02 21:04:42,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:04:42,023 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:04:42,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:04:42,023 INFO L85 PathProgramCache]: Analyzing trace with hash -631203199, now seen corresponding path program 1 times [2022-11-02 21:04:42,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:04:42,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2051875434] [2022-11-02 21:04:42,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:42,024 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:04:42,024 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:04:42,025 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:04:42,026 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-11-02 21:04:42,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:42,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 1257 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 21:04:42,550 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:04:42,618 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:04:42,618 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:04:42,618 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:04:42,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2051875434] [2022-11-02 21:04:42,619 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2051875434] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:04:42,619 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:04:42,619 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:04:42,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508230422] [2022-11-02 21:04:42,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:04:42,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:04:42,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:04:42,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:04:42,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:04:42,621 INFO L87 Difference]: Start difference. First operand 151 states and 211 transitions. Second operand has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:42,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:04:42,693 INFO L93 Difference]: Finished difference Result 475 states and 691 transitions. [2022-11-02 21:04:42,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:04:42,694 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 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 122 [2022-11-02 21:04:42,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:04:42,697 INFO L225 Difference]: With dead ends: 475 [2022-11-02 21:04:42,697 INFO L226 Difference]: Without dead ends: 356 [2022-11-02 21:04:42,698 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:04:42,699 INFO L413 NwaCegarLoop]: 204 mSDtfsCounter, 432 mSDsluCounter, 463 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 432 SdHoareTripleChecker+Valid, 667 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:04:42,699 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [432 Valid, 667 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:04:42,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2022-11-02 21:04:42,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 153. [2022-11-02 21:04:42,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 152 states have (on average 1.4013157894736843) internal successors, (213), 152 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:42,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 213 transitions. [2022-11-02 21:04:42,708 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 213 transitions. Word has length 122 [2022-11-02 21:04:42,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:04:42,709 INFO L495 AbstractCegarLoop]: Abstraction has 153 states and 213 transitions. [2022-11-02 21:04:42,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:42,709 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 213 transitions. [2022-11-02 21:04:42,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-02 21:04:42,711 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:04:42,711 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 21:04:42,737 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-11-02 21:04:42,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:04:42,927 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:04:42,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:04:42,927 INFO L85 PathProgramCache]: Analyzing trace with hash -1401936765, now seen corresponding path program 1 times [2022-11-02 21:04:42,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:04:42,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [825678242] [2022-11-02 21:04:42,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:42,929 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:04:42,929 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:04:42,930 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:04:42,968 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-11-02 21:04:43,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:43,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 1257 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 21:04:43,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:04:43,634 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:04:43,634 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:04:43,634 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:04:43,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [825678242] [2022-11-02 21:04:43,634 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [825678242] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:04:43,634 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:04:43,635 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:04:43,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639235511] [2022-11-02 21:04:43,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:04:43,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:04:43,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:04:43,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:04:43,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:04:43,637 INFO L87 Difference]: Start difference. First operand 153 states and 213 transitions. Second operand has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:43,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:04:43,787 INFO L93 Difference]: Finished difference Result 475 states and 690 transitions. [2022-11-02 21:04:43,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:04:43,788 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 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 122 [2022-11-02 21:04:43,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:04:43,790 INFO L225 Difference]: With dead ends: 475 [2022-11-02 21:04:43,790 INFO L226 Difference]: Without dead ends: 356 [2022-11-02 21:04:43,791 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:04:43,791 INFO L413 NwaCegarLoop]: 209 mSDtfsCounter, 426 mSDsluCounter, 466 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 426 SdHoareTripleChecker+Valid, 675 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:04:43,792 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [426 Valid, 675 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:04:43,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2022-11-02 21:04:43,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 155. [2022-11-02 21:04:43,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 154 states have (on average 1.396103896103896) internal successors, (215), 154 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:43,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 215 transitions. [2022-11-02 21:04:43,800 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 215 transitions. Word has length 122 [2022-11-02 21:04:43,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:04:43,800 INFO L495 AbstractCegarLoop]: Abstraction has 155 states and 215 transitions. [2022-11-02 21:04:43,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:43,801 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 215 transitions. [2022-11-02 21:04:43,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-02 21:04:43,802 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:04:43,802 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 21:04:43,833 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-11-02 21:04:44,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:04:44,019 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:04:44,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:04:44,019 INFO L85 PathProgramCache]: Analyzing trace with hash -1988212987, now seen corresponding path program 1 times [2022-11-02 21:04:44,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:04:44,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [381708854] [2022-11-02 21:04:44,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:44,020 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:04:44,020 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:04:44,021 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:04:44,023 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-11-02 21:04:44,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:44,595 INFO L263 TraceCheckSpWp]: Trace formula consists of 1257 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 21:04:44,598 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:04:44,683 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:04:44,683 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:04:44,684 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:04:44,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [381708854] [2022-11-02 21:04:44,684 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [381708854] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:04:44,684 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:04:44,684 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:04:44,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871408075] [2022-11-02 21:04:44,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:04:44,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:04:44,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:04:44,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:04:44,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:04:44,687 INFO L87 Difference]: Start difference. First operand 155 states and 215 transitions. Second operand has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:44,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:04:44,759 INFO L93 Difference]: Finished difference Result 475 states and 689 transitions. [2022-11-02 21:04:44,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:04:44,760 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 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 122 [2022-11-02 21:04:44,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:04:44,762 INFO L225 Difference]: With dead ends: 475 [2022-11-02 21:04:44,762 INFO L226 Difference]: Without dead ends: 356 [2022-11-02 21:04:44,763 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:04:44,764 INFO L413 NwaCegarLoop]: 214 mSDtfsCounter, 410 mSDsluCounter, 451 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 410 SdHoareTripleChecker+Valid, 665 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:04:44,764 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [410 Valid, 665 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:04:44,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2022-11-02 21:04:44,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 161. [2022-11-02 21:04:44,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 160 states have (on average 1.39375) internal successors, (223), 160 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:44,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 223 transitions. [2022-11-02 21:04:44,772 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 223 transitions. Word has length 122 [2022-11-02 21:04:44,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:04:44,773 INFO L495 AbstractCegarLoop]: Abstraction has 161 states and 223 transitions. [2022-11-02 21:04:44,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:44,773 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 223 transitions. [2022-11-02 21:04:44,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-02 21:04:44,775 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:04:44,775 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 21:04:44,808 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-11-02 21:04:44,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:04:44,989 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:04:44,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:04:44,990 INFO L85 PathProgramCache]: Analyzing trace with hash 1248916231, now seen corresponding path program 1 times [2022-11-02 21:04:44,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:04:44,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [537086499] [2022-11-02 21:04:44,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:44,992 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:04:44,992 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:04:44,993 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:04:44,996 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-11-02 21:04:45,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:45,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 1257 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 21:04:45,635 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:04:45,756 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:04:45,756 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:04:45,756 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:04:45,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [537086499] [2022-11-02 21:04:45,757 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [537086499] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:04:45,757 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:04:45,757 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:04:45,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032864468] [2022-11-02 21:04:45,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:04:45,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:04:45,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:04:45,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:04:45,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:04:45,760 INFO L87 Difference]: Start difference. First operand 161 states and 223 transitions. Second operand has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:45,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:04:45,946 INFO L93 Difference]: Finished difference Result 475 states and 688 transitions. [2022-11-02 21:04:45,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:04:45,947 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 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 122 [2022-11-02 21:04:45,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:04:45,949 INFO L225 Difference]: With dead ends: 475 [2022-11-02 21:04:45,949 INFO L226 Difference]: Without dead ends: 356 [2022-11-02 21:04:45,950 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:04:45,951 INFO L413 NwaCegarLoop]: 219 mSDtfsCounter, 404 mSDsluCounter, 454 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 404 SdHoareTripleChecker+Valid, 673 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:04:45,951 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [404 Valid, 673 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 21:04:45,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2022-11-02 21:04:45,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 163. [2022-11-02 21:04:45,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 162 states have (on average 1.3888888888888888) internal successors, (225), 162 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:45,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 225 transitions. [2022-11-02 21:04:45,960 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 225 transitions. Word has length 122 [2022-11-02 21:04:45,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:04:45,960 INFO L495 AbstractCegarLoop]: Abstraction has 163 states and 225 transitions. [2022-11-02 21:04:45,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:45,961 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 225 transitions. [2022-11-02 21:04:45,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-02 21:04:45,962 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:04:45,963 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 21:04:45,998 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-11-02 21:04:46,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:04:46,183 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:04:46,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:04:46,183 INFO L85 PathProgramCache]: Analyzing trace with hash 1489155977, now seen corresponding path program 1 times [2022-11-02 21:04:46,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:04:46,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [622195165] [2022-11-02 21:04:46,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:46,185 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:04:46,185 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:04:46,186 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:04:46,187 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-11-02 21:04:46,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:46,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 1257 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 21:04:46,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:04:46,927 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:04:46,927 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:04:46,928 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:04:46,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [622195165] [2022-11-02 21:04:46,928 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [622195165] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:04:46,928 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:04:46,929 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:04:46,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847598160] [2022-11-02 21:04:46,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:04:46,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:04:46,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:04:46,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:04:46,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:04:46,931 INFO L87 Difference]: Start difference. First operand 163 states and 225 transitions. Second operand has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:47,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:04:47,002 INFO L93 Difference]: Finished difference Result 475 states and 687 transitions. [2022-11-02 21:04:47,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:04:47,003 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 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 122 [2022-11-02 21:04:47,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:04:47,004 INFO L225 Difference]: With dead ends: 475 [2022-11-02 21:04:47,005 INFO L226 Difference]: Without dead ends: 356 [2022-11-02 21:04:47,005 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:04:47,006 INFO L413 NwaCegarLoop]: 221 mSDtfsCounter, 393 mSDsluCounter, 442 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 393 SdHoareTripleChecker+Valid, 663 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:04:47,006 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [393 Valid, 663 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:04:47,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2022-11-02 21:04:47,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 167. [2022-11-02 21:04:47,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 166 states have (on average 1.3855421686746987) internal successors, (230), 166 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:47,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 230 transitions. [2022-11-02 21:04:47,015 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 230 transitions. Word has length 122 [2022-11-02 21:04:47,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:04:47,015 INFO L495 AbstractCegarLoop]: Abstraction has 167 states and 230 transitions. [2022-11-02 21:04:47,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:47,016 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 230 transitions. [2022-11-02 21:04:47,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-02 21:04:47,017 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:04:47,017 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 21:04:47,047 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-11-02 21:04:47,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:04:47,231 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:04:47,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:04:47,231 INFO L85 PathProgramCache]: Analyzing trace with hash -1071706869, now seen corresponding path program 1 times [2022-11-02 21:04:47,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:04:47,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [415195803] [2022-11-02 21:04:47,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:47,233 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:04:47,233 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:04:47,234 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:04:47,235 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-11-02 21:04:47,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:47,859 INFO L263 TraceCheckSpWp]: Trace formula consists of 1257 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 21:04:47,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:04:47,971 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:04:47,971 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:04:47,971 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:04:47,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [415195803] [2022-11-02 21:04:47,971 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [415195803] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:04:47,971 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:04:47,972 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:04:47,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391471271] [2022-11-02 21:04:47,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:04:47,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:04:47,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:04:47,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:04:47,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:04:47,973 INFO L87 Difference]: Start difference. First operand 167 states and 230 transitions. Second operand has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:48,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:04:48,037 INFO L93 Difference]: Finished difference Result 475 states and 686 transitions. [2022-11-02 21:04:48,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:04:48,038 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 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 122 [2022-11-02 21:04:48,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:04:48,039 INFO L225 Difference]: With dead ends: 475 [2022-11-02 21:04:48,040 INFO L226 Difference]: Without dead ends: 356 [2022-11-02 21:04:48,040 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:04:48,041 INFO L413 NwaCegarLoop]: 223 mSDtfsCounter, 387 mSDsluCounter, 439 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 387 SdHoareTripleChecker+Valid, 662 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:04:48,041 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [387 Valid, 662 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 21:04:48,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2022-11-02 21:04:48,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 169. [2022-11-02 21:04:48,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 168 states have (on average 1.380952380952381) internal successors, (232), 168 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:48,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 232 transitions. [2022-11-02 21:04:48,048 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 232 transitions. Word has length 122 [2022-11-02 21:04:48,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:04:48,049 INFO L495 AbstractCegarLoop]: Abstraction has 169 states and 232 transitions. [2022-11-02 21:04:48,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:48,049 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 232 transitions. [2022-11-02 21:04:48,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-02 21:04:48,050 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:04:48,050 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 21:04:48,078 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-11-02 21:04:48,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:04:48,263 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:04:48,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:04:48,263 INFO L85 PathProgramCache]: Analyzing trace with hash 1312217869, now seen corresponding path program 1 times [2022-11-02 21:04:48,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:04:48,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2032701138] [2022-11-02 21:04:48,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:48,264 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:04:48,264 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:04:48,265 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:04:48,271 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-11-02 21:04:48,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:48,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 1257 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 21:04:48,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:04:48,893 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:04:48,893 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:04:48,894 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:04:48,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2032701138] [2022-11-02 21:04:48,894 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2032701138] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:04:48,894 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:04:48,894 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:04:48,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121337052] [2022-11-02 21:04:48,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:04:48,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:04:48,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:04:48,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:04:48,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:04:48,896 INFO L87 Difference]: Start difference. First operand 169 states and 232 transitions. Second operand has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:49,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:04:49,034 INFO L93 Difference]: Finished difference Result 475 states and 685 transitions. [2022-11-02 21:04:49,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:04:49,035 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 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 122 [2022-11-02 21:04:49,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:04:49,036 INFO L225 Difference]: With dead ends: 475 [2022-11-02 21:04:49,037 INFO L226 Difference]: Without dead ends: 356 [2022-11-02 21:04:49,037 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:04:49,038 INFO L413 NwaCegarLoop]: 235 mSDtfsCounter, 371 mSDsluCounter, 438 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 371 SdHoareTripleChecker+Valid, 673 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:04:49,038 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [371 Valid, 673 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:04:49,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2022-11-02 21:04:49,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 175. [2022-11-02 21:04:49,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 174 states have (on average 1.3793103448275863) internal successors, (240), 174 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:49,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 240 transitions. [2022-11-02 21:04:49,045 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 240 transitions. Word has length 122 [2022-11-02 21:04:49,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:04:49,046 INFO L495 AbstractCegarLoop]: Abstraction has 175 states and 240 transitions. [2022-11-02 21:04:49,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:49,046 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 240 transitions. [2022-11-02 21:04:49,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-02 21:04:49,047 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:04:49,047 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 21:04:49,075 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-11-02 21:04:49,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:04:49,275 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:04:49,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:04:49,275 INFO L85 PathProgramCache]: Analyzing trace with hash 96064143, now seen corresponding path program 1 times [2022-11-02 21:04:49,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:04:49,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [56935171] [2022-11-02 21:04:49,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:49,277 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:04:49,277 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:04:49,278 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:04:49,321 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-11-02 21:04:49,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:49,865 INFO L263 TraceCheckSpWp]: Trace formula consists of 1257 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 21:04:49,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:04:49,991 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:04:49,991 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:04:49,991 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:04:49,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [56935171] [2022-11-02 21:04:49,992 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [56935171] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:04:49,992 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:04:49,992 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:04:49,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986419105] [2022-11-02 21:04:49,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:04:49,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:04:49,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:04:49,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:04:49,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:04:49,994 INFO L87 Difference]: Start difference. First operand 175 states and 240 transitions. Second operand has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:50,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:04:50,144 INFO L93 Difference]: Finished difference Result 475 states and 684 transitions. [2022-11-02 21:04:50,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:04:50,145 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 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 122 [2022-11-02 21:04:50,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:04:50,146 INFO L225 Difference]: With dead ends: 475 [2022-11-02 21:04:50,146 INFO L226 Difference]: Without dead ends: 356 [2022-11-02 21:04:50,147 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:04:50,148 INFO L413 NwaCegarLoop]: 237 mSDtfsCounter, 360 mSDsluCounter, 426 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 360 SdHoareTripleChecker+Valid, 663 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:04:50,148 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [360 Valid, 663 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:04:50,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2022-11-02 21:04:50,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 179. [2022-11-02 21:04:50,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 178 states have (on average 1.3764044943820224) internal successors, (245), 178 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:50,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 245 transitions. [2022-11-02 21:04:50,156 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 245 transitions. Word has length 122 [2022-11-02 21:04:50,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:04:50,157 INFO L495 AbstractCegarLoop]: Abstraction has 179 states and 245 transitions. [2022-11-02 21:04:50,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:50,157 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 245 transitions. [2022-11-02 21:04:50,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-02 21:04:50,158 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:04:50,158 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 21:04:50,186 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-11-02 21:04:50,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:04:50,373 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:04:50,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:04:50,374 INFO L85 PathProgramCache]: Analyzing trace with hash -321332463, now seen corresponding path program 1 times [2022-11-02 21:04:50,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:04:50,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1631246630] [2022-11-02 21:04:50,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:50,376 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:04:50,376 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:04:50,377 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:04:50,403 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-11-02 21:04:50,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:51,007 INFO L263 TraceCheckSpWp]: Trace formula consists of 1257 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 21:04:51,010 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:04:51,151 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:04:51,152 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:04:51,152 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:04:51,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1631246630] [2022-11-02 21:04:51,152 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1631246630] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:04:51,152 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:04:51,152 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:04:51,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604636787] [2022-11-02 21:04:51,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:04:51,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:04:51,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:04:51,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:04:51,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:04:51,154 INFO L87 Difference]: Start difference. First operand 179 states and 245 transitions. Second operand has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:51,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:04:51,322 INFO L93 Difference]: Finished difference Result 475 states and 683 transitions. [2022-11-02 21:04:51,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:04:51,323 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 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 122 [2022-11-02 21:04:51,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:04:51,325 INFO L225 Difference]: With dead ends: 475 [2022-11-02 21:04:51,325 INFO L226 Difference]: Without dead ends: 356 [2022-11-02 21:04:51,326 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:04:51,326 INFO L413 NwaCegarLoop]: 239 mSDtfsCounter, 354 mSDsluCounter, 423 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 354 SdHoareTripleChecker+Valid, 662 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:04:51,327 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [354 Valid, 662 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 21:04:51,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2022-11-02 21:04:51,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 181. [2022-11-02 21:04:51,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 180 states have (on average 1.3722222222222222) internal successors, (247), 180 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:51,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 247 transitions. [2022-11-02 21:04:51,335 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 247 transitions. Word has length 122 [2022-11-02 21:04:51,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:04:51,335 INFO L495 AbstractCegarLoop]: Abstraction has 181 states and 247 transitions. [2022-11-02 21:04:51,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:51,336 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 247 transitions. [2022-11-02 21:04:51,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-02 21:04:51,337 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:04:51,337 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 21:04:51,360 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (22)] Ended with exit code 0 [2022-11-02 21:04:51,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:04:51,551 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:04:51,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:04:51,551 INFO L85 PathProgramCache]: Analyzing trace with hash 1640242195, now seen corresponding path program 1 times [2022-11-02 21:04:51,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:04:51,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1087570838] [2022-11-02 21:04:51,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:51,553 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:04:51,553 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:04:51,554 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:04:51,555 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-11-02 21:04:52,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:52,141 INFO L263 TraceCheckSpWp]: Trace formula consists of 1257 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 21:04:52,145 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:04:52,427 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:04:52,428 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:04:52,428 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:04:52,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1087570838] [2022-11-02 21:04:52,428 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1087570838] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:04:52,429 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:04:52,429 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:04:52,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797137845] [2022-11-02 21:04:52,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:04:52,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:04:52,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:04:52,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:04:52,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:04:52,431 INFO L87 Difference]: Start difference. First operand 181 states and 247 transitions. Second operand has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:52,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:04:52,688 INFO L93 Difference]: Finished difference Result 475 states and 682 transitions. [2022-11-02 21:04:52,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:04:52,689 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 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 122 [2022-11-02 21:04:52,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:04:52,691 INFO L225 Difference]: With dead ends: 475 [2022-11-02 21:04:52,691 INFO L226 Difference]: Without dead ends: 356 [2022-11-02 21:04:52,692 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:04:52,692 INFO L413 NwaCegarLoop]: 228 mSDtfsCounter, 348 mSDsluCounter, 394 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 348 SdHoareTripleChecker+Valid, 622 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:04:52,693 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [348 Valid, 622 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 21:04:52,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2022-11-02 21:04:52,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 183. [2022-11-02 21:04:52,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 182 states have (on average 1.3681318681318682) internal successors, (249), 182 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:52,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 249 transitions. [2022-11-02 21:04:52,701 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 249 transitions. Word has length 122 [2022-11-02 21:04:52,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:04:52,701 INFO L495 AbstractCegarLoop]: Abstraction has 183 states and 249 transitions. [2022-11-02 21:04:52,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:52,702 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 249 transitions. [2022-11-02 21:04:52,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-02 21:04:52,703 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:04:52,703 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 21:04:52,729 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2022-11-02 21:04:52,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:04:52,929 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:04:52,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:04:52,930 INFO L85 PathProgramCache]: Analyzing trace with hash -2094025323, now seen corresponding path program 1 times [2022-11-02 21:04:52,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:04:52,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [637134485] [2022-11-02 21:04:52,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:52,931 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:04:52,932 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:04:52,932 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:04:52,935 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-11-02 21:04:53,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:53,581 INFO L263 TraceCheckSpWp]: Trace formula consists of 1257 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 21:04:53,585 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:04:53,818 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:04:53,818 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:04:53,818 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:04:53,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [637134485] [2022-11-02 21:04:53,819 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [637134485] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:04:53,819 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:04:53,819 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:04:53,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988908129] [2022-11-02 21:04:53,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:04:53,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:04:53,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:04:53,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:04:53,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:04:53,821 INFO L87 Difference]: Start difference. First operand 183 states and 249 transitions. Second operand has 5 states, 5 states have (on average 24.4) internal successors, (122), 5 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:54,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:04:54,058 INFO L93 Difference]: Finished difference Result 502 states and 719 transitions. [2022-11-02 21:04:54,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:04:54,059 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.4) internal successors, (122), 5 states have internal predecessors, (122), 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 122 [2022-11-02 21:04:54,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:04:54,061 INFO L225 Difference]: With dead ends: 502 [2022-11-02 21:04:54,062 INFO L226 Difference]: Without dead ends: 383 [2022-11-02 21:04:54,062 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:04:54,063 INFO L413 NwaCegarLoop]: 242 mSDtfsCounter, 542 mSDsluCounter, 706 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 542 SdHoareTripleChecker+Valid, 948 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:04:54,064 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [542 Valid, 948 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 21:04:54,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2022-11-02 21:04:54,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 185. [2022-11-02 21:04:54,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 184 states have (on average 1.3641304347826086) internal successors, (251), 184 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:54,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 251 transitions. [2022-11-02 21:04:54,071 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 251 transitions. Word has length 122 [2022-11-02 21:04:54,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:04:54,072 INFO L495 AbstractCegarLoop]: Abstraction has 185 states and 251 transitions. [2022-11-02 21:04:54,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.4) internal successors, (122), 5 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:54,072 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 251 transitions. [2022-11-02 21:04:54,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-02 21:04:54,073 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:04:54,073 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 21:04:54,100 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (24)] Ended with exit code 0 [2022-11-02 21:04:54,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:04:54,288 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:04:54,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:04:54,288 INFO L85 PathProgramCache]: Analyzing trace with hash -833108073, now seen corresponding path program 1 times [2022-11-02 21:04:54,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:04:54,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1894255855] [2022-11-02 21:04:54,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:54,289 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:04:54,289 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:04:54,290 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:04:54,292 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-11-02 21:04:54,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:54,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 1257 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 21:04:54,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:04:55,043 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:04:55,043 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:04:55,044 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:04:55,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1894255855] [2022-11-02 21:04:55,044 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1894255855] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:04:55,044 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:04:55,045 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:04:55,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792858107] [2022-11-02 21:04:55,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:04:55,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:04:55,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:04:55,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:04:55,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:04:55,047 INFO L87 Difference]: Start difference. First operand 185 states and 251 transitions. Second operand has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:55,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:04:55,258 INFO L93 Difference]: Finished difference Result 475 states and 680 transitions. [2022-11-02 21:04:55,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:04:55,259 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 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 122 [2022-11-02 21:04:55,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:04:55,261 INFO L225 Difference]: With dead ends: 475 [2022-11-02 21:04:55,261 INFO L226 Difference]: Without dead ends: 356 [2022-11-02 21:04:55,262 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:04:55,262 INFO L413 NwaCegarLoop]: 241 mSDtfsCounter, 336 mSDsluCounter, 406 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 336 SdHoareTripleChecker+Valid, 647 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:04:55,263 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [336 Valid, 647 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 21:04:55,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2022-11-02 21:04:55,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 187. [2022-11-02 21:04:55,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 186 states have (on average 1.3602150537634408) internal successors, (253), 186 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:55,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 253 transitions. [2022-11-02 21:04:55,271 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 253 transitions. Word has length 122 [2022-11-02 21:04:55,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:04:55,272 INFO L495 AbstractCegarLoop]: Abstraction has 187 states and 253 transitions. [2022-11-02 21:04:55,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:55,272 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 253 transitions. [2022-11-02 21:04:55,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-02 21:04:55,273 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:04:55,273 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 21:04:55,305 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2022-11-02 21:04:55,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:04:55,487 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:04:55,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:04:55,487 INFO L85 PathProgramCache]: Analyzing trace with hash 553677337, now seen corresponding path program 1 times [2022-11-02 21:04:55,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:04:55,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [546284138] [2022-11-02 21:04:55,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:55,488 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:04:55,488 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:04:55,490 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:04:55,491 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-11-02 21:04:56,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:56,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 1257 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 21:04:56,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:04:56,366 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:04:56,366 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:04:56,366 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:04:56,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [546284138] [2022-11-02 21:04:56,366 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [546284138] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:04:56,367 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:04:56,367 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:04:56,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522776650] [2022-11-02 21:04:56,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:04:56,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:04:56,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:04:56,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:04:56,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:04:56,368 INFO L87 Difference]: Start difference. First operand 187 states and 253 transitions. Second operand has 5 states, 5 states have (on average 24.4) internal successors, (122), 5 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:56,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:04:56,669 INFO L93 Difference]: Finished difference Result 502 states and 717 transitions. [2022-11-02 21:04:56,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:04:56,670 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.4) internal successors, (122), 5 states have internal predecessors, (122), 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 122 [2022-11-02 21:04:56,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:04:56,672 INFO L225 Difference]: With dead ends: 502 [2022-11-02 21:04:56,672 INFO L226 Difference]: Without dead ends: 383 [2022-11-02 21:04:56,672 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:04:56,673 INFO L413 NwaCegarLoop]: 246 mSDtfsCounter, 528 mSDsluCounter, 694 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 528 SdHoareTripleChecker+Valid, 940 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 21:04:56,675 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [528 Valid, 940 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 21:04:56,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2022-11-02 21:04:56,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 189. [2022-11-02 21:04:56,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 188 states have (on average 1.3563829787234043) internal successors, (255), 188 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:56,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 255 transitions. [2022-11-02 21:04:56,691 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 255 transitions. Word has length 122 [2022-11-02 21:04:56,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:04:56,691 INFO L495 AbstractCegarLoop]: Abstraction has 189 states and 255 transitions. [2022-11-02 21:04:56,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.4) internal successors, (122), 5 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:56,692 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 255 transitions. [2022-11-02 21:04:56,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-02 21:04:56,693 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:04:56,693 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 21:04:56,719 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (26)] Ended with exit code 0 [2022-11-02 21:04:56,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:04:56,912 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:04:56,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:04:56,912 INFO L85 PathProgramCache]: Analyzing trace with hash 997578011, now seen corresponding path program 1 times [2022-11-02 21:04:56,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:04:56,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1034417430] [2022-11-02 21:04:56,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:56,913 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:04:56,914 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:04:56,914 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:04:56,916 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-11-02 21:04:57,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:57,525 INFO L263 TraceCheckSpWp]: Trace formula consists of 1257 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 21:04:57,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:04:57,714 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:04:57,714 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:04:57,714 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:04:57,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1034417430] [2022-11-02 21:04:57,715 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1034417430] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:04:57,715 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:04:57,715 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:04:57,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739276604] [2022-11-02 21:04:57,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:04:57,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:04:57,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:04:57,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:04:57,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:04:57,716 INFO L87 Difference]: Start difference. First operand 189 states and 255 transitions. Second operand has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:57,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:04:57,887 INFO L93 Difference]: Finished difference Result 475 states and 678 transitions. [2022-11-02 21:04:57,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:04:57,887 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 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 122 [2022-11-02 21:04:57,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:04:57,889 INFO L225 Difference]: With dead ends: 475 [2022-11-02 21:04:57,889 INFO L226 Difference]: Without dead ends: 356 [2022-11-02 21:04:57,890 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:04:57,892 INFO L413 NwaCegarLoop]: 248 mSDtfsCounter, 319 mSDsluCounter, 397 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 319 SdHoareTripleChecker+Valid, 645 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:04:57,895 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [319 Valid, 645 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 21:04:57,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2022-11-02 21:04:57,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 193. [2022-11-02 21:04:57,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 192 states have (on average 1.3541666666666667) internal successors, (260), 192 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:57,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 260 transitions. [2022-11-02 21:04:57,912 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 260 transitions. Word has length 122 [2022-11-02 21:04:57,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:04:57,913 INFO L495 AbstractCegarLoop]: Abstraction has 193 states and 260 transitions. [2022-11-02 21:04:57,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:57,913 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 260 transitions. [2022-11-02 21:04:57,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-02 21:04:57,914 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:04:57,914 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 21:04:57,941 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (27)] Ended with exit code 0 [2022-11-02 21:04:58,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:04:58,135 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:04:58,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:04:58,135 INFO L85 PathProgramCache]: Analyzing trace with hash 982059293, now seen corresponding path program 1 times [2022-11-02 21:04:58,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:04:58,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1717610015] [2022-11-02 21:04:58,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:58,137 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:04:58,137 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:04:58,138 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:04:58,142 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2022-11-02 21:04:58,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:58,758 INFO L263 TraceCheckSpWp]: Trace formula consists of 1257 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 21:04:58,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:04:59,128 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:04:59,128 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:04:59,129 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:04:59,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1717610015] [2022-11-02 21:04:59,129 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1717610015] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:04:59,129 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:04:59,129 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:04:59,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953755165] [2022-11-02 21:04:59,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:04:59,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:04:59,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:04:59,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:04:59,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:04:59,131 INFO L87 Difference]: Start difference. First operand 193 states and 260 transitions. Second operand has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:59,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:04:59,375 INFO L93 Difference]: Finished difference Result 475 states and 677 transitions. [2022-11-02 21:04:59,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:04:59,376 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 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 122 [2022-11-02 21:04:59,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:04:59,378 INFO L225 Difference]: With dead ends: 475 [2022-11-02 21:04:59,378 INFO L226 Difference]: Without dead ends: 356 [2022-11-02 21:04:59,378 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:04:59,379 INFO L413 NwaCegarLoop]: 241 mSDtfsCounter, 313 mSDsluCounter, 376 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 313 SdHoareTripleChecker+Valid, 617 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:04:59,379 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [313 Valid, 617 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 21:04:59,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2022-11-02 21:04:59,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 195. [2022-11-02 21:04:59,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 194 states have (on average 1.3505154639175259) internal successors, (262), 194 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:59,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 262 transitions. [2022-11-02 21:04:59,388 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 262 transitions. Word has length 122 [2022-11-02 21:04:59,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:04:59,389 INFO L495 AbstractCegarLoop]: Abstraction has 195 states and 262 transitions. [2022-11-02 21:04:59,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:59,389 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 262 transitions. [2022-11-02 21:04:59,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-02 21:04:59,390 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:04:59,390 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 21:04:59,418 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2022-11-02 21:04:59,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:04:59,615 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:04:59,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:04:59,616 INFO L85 PathProgramCache]: Analyzing trace with hash 628970911, now seen corresponding path program 1 times [2022-11-02 21:04:59,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:04:59,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1576075309] [2022-11-02 21:04:59,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:59,617 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:04:59,617 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:04:59,618 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:04:59,622 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2022-11-02 21:05:00,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:00,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 1257 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 21:05:00,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:05:00,560 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:05:00,560 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:05:00,561 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:05:00,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1576075309] [2022-11-02 21:05:00,561 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1576075309] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:05:00,561 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:05:00,561 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:05:00,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128693941] [2022-11-02 21:05:00,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:05:00,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:05:00,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:05:00,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:05:00,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:05:00,563 INFO L87 Difference]: Start difference. First operand 195 states and 262 transitions. Second operand has 5 states, 5 states have (on average 24.4) internal successors, (122), 5 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:00,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:05:00,805 INFO L93 Difference]: Finished difference Result 502 states and 714 transitions. [2022-11-02 21:05:00,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:05:00,805 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.4) internal successors, (122), 5 states have internal predecessors, (122), 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 122 [2022-11-02 21:05:00,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:05:00,807 INFO L225 Difference]: With dead ends: 502 [2022-11-02 21:05:00,807 INFO L226 Difference]: Without dead ends: 383 [2022-11-02 21:05:00,808 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:05:00,808 INFO L413 NwaCegarLoop]: 255 mSDtfsCounter, 502 mSDsluCounter, 670 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 502 SdHoareTripleChecker+Valid, 925 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:05:00,809 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [502 Valid, 925 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 21:05:00,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2022-11-02 21:05:00,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 197. [2022-11-02 21:05:00,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 196 states have (on average 1.346938775510204) internal successors, (264), 196 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:00,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 264 transitions. [2022-11-02 21:05:00,815 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 264 transitions. Word has length 122 [2022-11-02 21:05:00,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:05:00,816 INFO L495 AbstractCegarLoop]: Abstraction has 197 states and 264 transitions. [2022-11-02 21:05:00,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.4) internal successors, (122), 5 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:00,816 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 264 transitions. [2022-11-02 21:05:00,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-02 21:05:00,817 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:05:00,817 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 21:05:00,846 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2022-11-02 21:05:01,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:05:01,035 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:05:01,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:05:01,035 INFO L85 PathProgramCache]: Analyzing trace with hash 1522457249, now seen corresponding path program 1 times [2022-11-02 21:05:01,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:05:01,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [472913112] [2022-11-02 21:05:01,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:05:01,037 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:05:01,037 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:05:01,039 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:05:01,079 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2022-11-02 21:05:01,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:01,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 1257 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 21:05:01,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:05:01,860 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:05:01,861 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:05:01,861 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:05:01,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [472913112] [2022-11-02 21:05:01,861 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [472913112] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:05:01,861 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:05:01,861 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:05:01,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434729586] [2022-11-02 21:05:01,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:05:01,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:05:01,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:05:01,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:05:01,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:05:01,863 INFO L87 Difference]: Start difference. First operand 197 states and 264 transitions. Second operand has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:02,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:05:02,044 INFO L93 Difference]: Finished difference Result 475 states and 675 transitions. [2022-11-02 21:05:02,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:05:02,047 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 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 122 [2022-11-02 21:05:02,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:05:02,049 INFO L225 Difference]: With dead ends: 475 [2022-11-02 21:05:02,049 INFO L226 Difference]: Without dead ends: 356 [2022-11-02 21:05:02,050 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:05:02,051 INFO L413 NwaCegarLoop]: 254 mSDtfsCounter, 301 mSDsluCounter, 388 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 301 SdHoareTripleChecker+Valid, 642 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:05:02,051 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [301 Valid, 642 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 21:05:02,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2022-11-02 21:05:02,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 199. [2022-11-02 21:05:02,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 198 states have (on average 1.3434343434343434) internal successors, (266), 198 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:02,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 266 transitions. [2022-11-02 21:05:02,059 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 266 transitions. Word has length 122 [2022-11-02 21:05:02,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:05:02,059 INFO L495 AbstractCegarLoop]: Abstraction has 199 states and 266 transitions. [2022-11-02 21:05:02,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:02,060 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 266 transitions. [2022-11-02 21:05:02,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-02 21:05:02,060 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:05:02,061 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 21:05:02,089 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2022-11-02 21:05:02,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:05:02,279 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:05:02,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:05:02,280 INFO L85 PathProgramCache]: Analyzing trace with hash 625063971, now seen corresponding path program 1 times [2022-11-02 21:05:02,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:05:02,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1382082433] [2022-11-02 21:05:02,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:05:02,282 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:05:02,282 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:05:02,283 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:05:02,310 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2022-11-02 21:05:02,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:02,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 1257 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 21:05:02,947 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:05:03,204 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:05:03,204 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:05:03,204 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:05:03,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1382082433] [2022-11-02 21:05:03,205 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1382082433] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:05:03,205 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:05:03,205 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:05:03,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949425359] [2022-11-02 21:05:03,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:05:03,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:05:03,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:05:03,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:05:03,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:05:03,207 INFO L87 Difference]: Start difference. First operand 199 states and 266 transitions. Second operand has 5 states, 5 states have (on average 24.4) internal successors, (122), 5 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:03,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:05:03,433 INFO L93 Difference]: Finished difference Result 502 states and 712 transitions. [2022-11-02 21:05:03,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:05:03,434 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.4) internal successors, (122), 5 states have internal predecessors, (122), 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 122 [2022-11-02 21:05:03,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:05:03,435 INFO L225 Difference]: With dead ends: 502 [2022-11-02 21:05:03,435 INFO L226 Difference]: Without dead ends: 383 [2022-11-02 21:05:03,436 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:05:03,437 INFO L413 NwaCegarLoop]: 259 mSDtfsCounter, 488 mSDsluCounter, 658 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 488 SdHoareTripleChecker+Valid, 917 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:05:03,437 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [488 Valid, 917 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 21:05:03,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2022-11-02 21:05:03,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 201. [2022-11-02 21:05:03,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 200 states have (on average 1.34) internal successors, (268), 200 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:03,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 268 transitions. [2022-11-02 21:05:03,445 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 268 transitions. Word has length 122 [2022-11-02 21:05:03,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:05:03,446 INFO L495 AbstractCegarLoop]: Abstraction has 201 states and 268 transitions. [2022-11-02 21:05:03,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.4) internal successors, (122), 5 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:03,446 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 268 transitions. [2022-11-02 21:05:03,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-02 21:05:03,447 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:05:03,447 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 21:05:03,475 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2022-11-02 21:05:03,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:05:03,663 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:05:03,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:05:03,663 INFO L85 PathProgramCache]: Analyzing trace with hash 1048710693, now seen corresponding path program 1 times [2022-11-02 21:05:03,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:05:03,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1176541515] [2022-11-02 21:05:03,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:05:03,664 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:05:03,664 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:05:03,665 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:05:03,667 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2022-11-02 21:05:04,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:04,348 INFO L263 TraceCheckSpWp]: Trace formula consists of 1257 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 21:05:04,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:05:04,541 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:05:04,541 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:05:04,541 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:05:04,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1176541515] [2022-11-02 21:05:04,541 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1176541515] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:05:04,541 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:05:04,541 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:05:04,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806547084] [2022-11-02 21:05:04,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:05:04,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:05:04,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:05:04,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:05:04,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:05:04,543 INFO L87 Difference]: Start difference. First operand 201 states and 268 transitions. Second operand has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:04,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:05:04,726 INFO L93 Difference]: Finished difference Result 475 states and 673 transitions. [2022-11-02 21:05:04,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:05:04,727 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 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 122 [2022-11-02 21:05:04,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:05:04,729 INFO L225 Difference]: With dead ends: 475 [2022-11-02 21:05:04,729 INFO L226 Difference]: Without dead ends: 356 [2022-11-02 21:05:04,730 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:05:04,731 INFO L413 NwaCegarLoop]: 258 mSDtfsCounter, 289 mSDsluCounter, 382 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 640 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:05:04,731 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [289 Valid, 640 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 21:05:04,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2022-11-02 21:05:04,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 203. [2022-11-02 21:05:04,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 202 states have (on average 1.3366336633663367) internal successors, (270), 202 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:04,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 270 transitions. [2022-11-02 21:05:04,739 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 270 transitions. Word has length 122 [2022-11-02 21:05:04,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:05:04,739 INFO L495 AbstractCegarLoop]: Abstraction has 203 states and 270 transitions. [2022-11-02 21:05:04,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:04,740 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 270 transitions. [2022-11-02 21:05:04,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-02 21:05:04,740 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:05:04,741 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 21:05:04,769 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2022-11-02 21:05:04,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:05:04,950 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:05:04,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:05:04,950 INFO L85 PathProgramCache]: Analyzing trace with hash -796656473, now seen corresponding path program 1 times [2022-11-02 21:05:04,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:05:04,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1081786451] [2022-11-02 21:05:04,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:05:04,952 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:05:04,952 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:05:04,954 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:05:04,995 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2022-11-02 21:05:05,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:05,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 1257 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 21:05:05,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:05:05,782 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:05:05,782 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:05:05,782 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:05:05,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1081786451] [2022-11-02 21:05:05,783 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1081786451] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:05:05,783 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:05:05,783 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:05:05,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092219104] [2022-11-02 21:05:05,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:05:05,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:05:05,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:05:05,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:05:05,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:05:05,785 INFO L87 Difference]: Start difference. First operand 203 states and 270 transitions. Second operand has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:05,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:05:05,843 INFO L93 Difference]: Finished difference Result 475 states and 672 transitions. [2022-11-02 21:05:05,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:05:05,844 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 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 122 [2022-11-02 21:05:05,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:05:05,846 INFO L225 Difference]: With dead ends: 475 [2022-11-02 21:05:05,846 INFO L226 Difference]: Without dead ends: 356 [2022-11-02 21:05:05,847 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:05:05,848 INFO L413 NwaCegarLoop]: 266 mSDtfsCounter, 278 mSDsluCounter, 382 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 648 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:05:05,848 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [278 Valid, 648 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 21:05:05,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2022-11-02 21:05:05,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 207. [2022-11-02 21:05:05,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 206 states have (on average 1.3349514563106797) internal successors, (275), 206 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:05,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 275 transitions. [2022-11-02 21:05:05,855 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 275 transitions. Word has length 122 [2022-11-02 21:05:05,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:05:05,856 INFO L495 AbstractCegarLoop]: Abstraction has 207 states and 275 transitions. [2022-11-02 21:05:05,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:05,856 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 275 transitions. [2022-11-02 21:05:05,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-02 21:05:05,857 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:05:05,857 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 21:05:05,884 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (33)] Ended with exit code 0 [2022-11-02 21:05:06,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:05:06,071 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:05:06,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:05:06,071 INFO L85 PathProgramCache]: Analyzing trace with hash -1640661975, now seen corresponding path program 1 times [2022-11-02 21:05:06,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:05:06,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [426051182] [2022-11-02 21:05:06,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:05:06,073 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:05:06,073 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:05:06,074 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:05:06,075 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2022-11-02 21:05:06,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:06,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 1257 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 21:05:06,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:05:06,850 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:05:06,850 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:05:06,850 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:05:06,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [426051182] [2022-11-02 21:05:06,851 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [426051182] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:05:06,851 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:05:06,851 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:05:06,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993417849] [2022-11-02 21:05:06,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:05:06,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:05:06,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:05:06,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:05:06,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:05:06,852 INFO L87 Difference]: Start difference. First operand 207 states and 275 transitions. Second operand has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:06,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:05:06,908 INFO L93 Difference]: Finished difference Result 475 states and 671 transitions. [2022-11-02 21:05:06,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:05:06,908 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 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 122 [2022-11-02 21:05:06,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:05:06,909 INFO L225 Difference]: With dead ends: 475 [2022-11-02 21:05:06,909 INFO L226 Difference]: Without dead ends: 356 [2022-11-02 21:05:06,910 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:05:06,910 INFO L413 NwaCegarLoop]: 268 mSDtfsCounter, 272 mSDsluCounter, 379 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 647 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:05:06,910 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [272 Valid, 647 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 21:05:06,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2022-11-02 21:05:06,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 209. [2022-11-02 21:05:06,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 208 states have (on average 1.3317307692307692) internal successors, (277), 208 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:06,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 277 transitions. [2022-11-02 21:05:06,917 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 277 transitions. Word has length 122 [2022-11-02 21:05:06,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:05:06,918 INFO L495 AbstractCegarLoop]: Abstraction has 209 states and 277 transitions. [2022-11-02 21:05:06,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:06,918 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 277 transitions. [2022-11-02 21:05:06,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-02 21:05:06,919 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:05:06,920 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 21:05:06,948 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (34)] Ended with exit code 0 [2022-11-02 21:05:07,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:05:07,143 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:05:07,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:05:07,143 INFO L85 PathProgramCache]: Analyzing trace with hash -1713048533, now seen corresponding path program 1 times [2022-11-02 21:05:07,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:05:07,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [998979759] [2022-11-02 21:05:07,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:05:07,144 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:05:07,145 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:05:07,145 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:05:07,147 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2022-11-02 21:05:07,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:07,774 INFO L263 TraceCheckSpWp]: Trace formula consists of 1257 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 21:05:07,777 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:05:07,931 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:05:07,931 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:05:07,932 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:05:07,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [998979759] [2022-11-02 21:05:07,932 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [998979759] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:05:07,932 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:05:07,932 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:05:07,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639437435] [2022-11-02 21:05:07,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:05:07,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:05:07,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:05:07,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:05:07,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:05:07,934 INFO L87 Difference]: Start difference. First operand 209 states and 277 transitions. Second operand has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:07,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:05:07,987 INFO L93 Difference]: Finished difference Result 475 states and 670 transitions. [2022-11-02 21:05:07,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:05:07,995 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 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 122 [2022-11-02 21:05:07,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:05:07,996 INFO L225 Difference]: With dead ends: 475 [2022-11-02 21:05:07,997 INFO L226 Difference]: Without dead ends: 356 [2022-11-02 21:05:07,997 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:05:07,998 INFO L413 NwaCegarLoop]: 270 mSDtfsCounter, 266 mSDsluCounter, 376 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 266 SdHoareTripleChecker+Valid, 646 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:05:07,998 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [266 Valid, 646 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 21:05:07,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2022-11-02 21:05:08,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 211. [2022-11-02 21:05:08,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 210 states have (on average 1.3285714285714285) internal successors, (279), 210 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:08,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 279 transitions. [2022-11-02 21:05:08,005 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 279 transitions. Word has length 122 [2022-11-02 21:05:08,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:05:08,005 INFO L495 AbstractCegarLoop]: Abstraction has 211 states and 279 transitions. [2022-11-02 21:05:08,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:08,006 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 279 transitions. [2022-11-02 21:05:08,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-02 21:05:08,007 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:05:08,007 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 21:05:08,027 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (35)] Ended with exit code 0 [2022-11-02 21:05:08,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:05:08,219 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:05:08,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:05:08,219 INFO L85 PathProgramCache]: Analyzing trace with hash -1011448659, now seen corresponding path program 1 times [2022-11-02 21:05:08,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:05:08,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1468306577] [2022-11-02 21:05:08,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:05:08,220 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:05:08,221 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:05:08,221 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:05:08,223 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2022-11-02 21:05:08,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:08,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 1257 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 21:05:08,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:05:09,013 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:05:09,013 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:05:09,013 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:05:09,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1468306577] [2022-11-02 21:05:09,014 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1468306577] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:05:09,014 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:05:09,014 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:05:09,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046440352] [2022-11-02 21:05:09,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:05:09,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:05:09,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:05:09,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:05:09,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:05:09,016 INFO L87 Difference]: Start difference. First operand 211 states and 279 transitions. Second operand has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:09,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:05:09,075 INFO L93 Difference]: Finished difference Result 475 states and 669 transitions. [2022-11-02 21:05:09,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:05:09,076 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 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 122 [2022-11-02 21:05:09,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:05:09,076 INFO L225 Difference]: With dead ends: 475 [2022-11-02 21:05:09,077 INFO L226 Difference]: Without dead ends: 356 [2022-11-02 21:05:09,077 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:05:09,077 INFO L413 NwaCegarLoop]: 272 mSDtfsCounter, 260 mSDsluCounter, 373 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 260 SdHoareTripleChecker+Valid, 645 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:05:09,078 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [260 Valid, 645 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 21:05:09,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2022-11-02 21:05:09,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 213. [2022-11-02 21:05:09,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 212 states have (on average 1.3254716981132075) internal successors, (281), 212 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:09,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 281 transitions. [2022-11-02 21:05:09,084 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 281 transitions. Word has length 122 [2022-11-02 21:05:09,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:05:09,085 INFO L495 AbstractCegarLoop]: Abstraction has 213 states and 281 transitions. [2022-11-02 21:05:09,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:09,085 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 281 transitions. [2022-11-02 21:05:09,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-02 21:05:09,086 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:05:09,086 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 21:05:09,120 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (36)] Forceful destruction successful, exit code 0 [2022-11-02 21:05:09,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:05:09,303 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:05:09,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:05:09,303 INFO L85 PathProgramCache]: Analyzing trace with hash 374754735, now seen corresponding path program 1 times [2022-11-02 21:05:09,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:05:09,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [673666010] [2022-11-02 21:05:09,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:05:09,305 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:05:09,305 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:05:09,306 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:05:09,307 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2022-11-02 21:05:09,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:09,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 1257 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 21:05:09,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:05:10,127 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:05:10,127 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:05:10,127 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:05:10,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [673666010] [2022-11-02 21:05:10,128 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [673666010] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:05:10,128 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:05:10,128 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:05:10,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444707876] [2022-11-02 21:05:10,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:05:10,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:05:10,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:05:10,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:05:10,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:05:10,129 INFO L87 Difference]: Start difference. First operand 213 states and 281 transitions. Second operand has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:10,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:05:10,185 INFO L93 Difference]: Finished difference Result 475 states and 668 transitions. [2022-11-02 21:05:10,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:05:10,186 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 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 122 [2022-11-02 21:05:10,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:05:10,188 INFO L225 Difference]: With dead ends: 475 [2022-11-02 21:05:10,188 INFO L226 Difference]: Without dead ends: 356 [2022-11-02 21:05:10,189 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:05:10,190 INFO L413 NwaCegarLoop]: 274 mSDtfsCounter, 254 mSDsluCounter, 370 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 644 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:05:10,190 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [254 Valid, 644 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 21:05:10,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2022-11-02 21:05:10,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 215. [2022-11-02 21:05:10,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 214 states have (on average 1.3224299065420562) internal successors, (283), 214 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:10,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 283 transitions. [2022-11-02 21:05:10,196 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 283 transitions. Word has length 122 [2022-11-02 21:05:10,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:05:10,196 INFO L495 AbstractCegarLoop]: Abstraction has 215 states and 283 transitions. [2022-11-02 21:05:10,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:10,197 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 283 transitions. [2022-11-02 21:05:10,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-02 21:05:10,197 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:05:10,198 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 21:05:10,217 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (37)] Ended with exit code 0 [2022-11-02 21:05:10,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:05:10,403 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:05:10,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:05:10,403 INFO L85 PathProgramCache]: Analyzing trace with hash -1996984527, now seen corresponding path program 1 times [2022-11-02 21:05:10,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:05:10,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2026883049] [2022-11-02 21:05:10,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:05:10,405 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:05:10,405 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:05:10,406 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:05:10,408 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2022-11-02 21:05:10,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:11,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 1257 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 21:05:11,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:05:11,204 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:05:11,204 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:05:11,204 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:05:11,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2026883049] [2022-11-02 21:05:11,205 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2026883049] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:05:11,205 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:05:11,205 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:05:11,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522244373] [2022-11-02 21:05:11,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:05:11,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:05:11,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:05:11,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:05:11,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:05:11,207 INFO L87 Difference]: Start difference. First operand 215 states and 283 transitions. Second operand has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:11,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:05:11,275 INFO L93 Difference]: Finished difference Result 475 states and 667 transitions. [2022-11-02 21:05:11,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:05:11,276 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 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 122 [2022-11-02 21:05:11,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:05:11,278 INFO L225 Difference]: With dead ends: 475 [2022-11-02 21:05:11,278 INFO L226 Difference]: Without dead ends: 356 [2022-11-02 21:05:11,279 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:05:11,279 INFO L413 NwaCegarLoop]: 276 mSDtfsCounter, 248 mSDsluCounter, 367 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 643 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:05:11,280 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [248 Valid, 643 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:05:11,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2022-11-02 21:05:11,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 217. [2022-11-02 21:05:11,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 216 states have (on average 1.3194444444444444) internal successors, (285), 216 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:11,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 285 transitions. [2022-11-02 21:05:11,287 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 285 transitions. Word has length 122 [2022-11-02 21:05:11,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:05:11,288 INFO L495 AbstractCegarLoop]: Abstraction has 217 states and 285 transitions. [2022-11-02 21:05:11,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:11,288 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 285 transitions. [2022-11-02 21:05:11,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-02 21:05:11,289 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:05:11,290 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 21:05:11,317 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (38)] Ended with exit code 0 [2022-11-02 21:05:11,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:05:11,515 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:05:11,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:05:11,515 INFO L85 PathProgramCache]: Analyzing trace with hash -1856435917, now seen corresponding path program 1 times [2022-11-02 21:05:11,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:05:11,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2052911811] [2022-11-02 21:05:11,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:05:11,517 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:05:11,517 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:05:11,518 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:05:11,519 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2022-11-02 21:05:12,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:12,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 1257 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 21:05:12,162 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:05:12,341 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:05:12,341 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:05:12,342 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:05:12,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2052911811] [2022-11-02 21:05:12,342 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2052911811] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:05:12,342 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:05:12,342 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:05:12,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981037973] [2022-11-02 21:05:12,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:05:12,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:05:12,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:05:12,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:05:12,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:05:12,344 INFO L87 Difference]: Start difference. First operand 217 states and 285 transitions. Second operand has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:12,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:05:12,514 INFO L93 Difference]: Finished difference Result 475 states and 666 transitions. [2022-11-02 21:05:12,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:05:12,515 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 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 122 [2022-11-02 21:05:12,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:05:12,517 INFO L225 Difference]: With dead ends: 475 [2022-11-02 21:05:12,517 INFO L226 Difference]: Without dead ends: 356 [2022-11-02 21:05:12,518 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:05:12,518 INFO L413 NwaCegarLoop]: 280 mSDtfsCounter, 237 mSDsluCounter, 359 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 639 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:05:12,518 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [237 Valid, 639 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 21:05:12,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2022-11-02 21:05:12,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 221. [2022-11-02 21:05:12,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 220 states have (on average 1.3181818181818181) internal successors, (290), 220 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:12,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 290 transitions. [2022-11-02 21:05:12,526 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 290 transitions. Word has length 122 [2022-11-02 21:05:12,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:05:12,526 INFO L495 AbstractCegarLoop]: Abstraction has 221 states and 290 transitions. [2022-11-02 21:05:12,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:12,526 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 290 transitions. [2022-11-02 21:05:12,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-02 21:05:12,527 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:05:12,527 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 21:05:12,550 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (39)] Ended with exit code 0 [2022-11-02 21:05:12,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:05:12,728 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:05:12,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:05:12,728 INFO L85 PathProgramCache]: Analyzing trace with hash -1433734091, now seen corresponding path program 1 times [2022-11-02 21:05:12,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:05:12,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [169195206] [2022-11-02 21:05:12,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:05:12,730 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:05:12,730 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:05:12,731 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:05:12,735 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2022-11-02 21:05:13,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:13,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 1257 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 21:05:13,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:05:13,546 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:05:13,546 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:05:13,547 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:05:13,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [169195206] [2022-11-02 21:05:13,547 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [169195206] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:05:13,547 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:05:13,547 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:05:13,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691912628] [2022-11-02 21:05:13,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:05:13,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:05:13,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:05:13,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:05:13,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:05:13,549 INFO L87 Difference]: Start difference. First operand 221 states and 290 transitions. Second operand has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:13,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:05:13,604 INFO L93 Difference]: Finished difference Result 475 states and 665 transitions. [2022-11-02 21:05:13,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:05:13,604 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 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 122 [2022-11-02 21:05:13,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:05:13,607 INFO L225 Difference]: With dead ends: 475 [2022-11-02 21:05:13,607 INFO L226 Difference]: Without dead ends: 356 [2022-11-02 21:05:13,607 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:05:13,608 INFO L413 NwaCegarLoop]: 286 mSDtfsCounter, 226 mSDsluCounter, 355 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 641 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:05:13,608 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [226 Valid, 641 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 21:05:13,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2022-11-02 21:05:13,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 225. [2022-11-02 21:05:13,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 224 states have (on average 1.3169642857142858) internal successors, (295), 224 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:13,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 295 transitions. [2022-11-02 21:05:13,613 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 295 transitions. Word has length 122 [2022-11-02 21:05:13,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:05:13,613 INFO L495 AbstractCegarLoop]: Abstraction has 225 states and 295 transitions. [2022-11-02 21:05:13,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:13,614 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 295 transitions. [2022-11-02 21:05:13,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-02 21:05:13,615 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:05:13,615 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 21:05:13,641 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (40)] Forceful destruction successful, exit code 0 [2022-11-02 21:05:13,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:05:13,836 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:05:13,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:05:13,837 INFO L85 PathProgramCache]: Analyzing trace with hash 1272885303, now seen corresponding path program 1 times [2022-11-02 21:05:13,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:05:13,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [680501176] [2022-11-02 21:05:13,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:05:13,838 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:05:13,839 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:05:13,840 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:05:13,852 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2022-11-02 21:05:14,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:14,486 INFO L263 TraceCheckSpWp]: Trace formula consists of 1257 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 21:05:14,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:05:14,669 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:05:14,670 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:05:14,670 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:05:14,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [680501176] [2022-11-02 21:05:14,670 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [680501176] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:05:14,670 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:05:14,670 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:05:14,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081691731] [2022-11-02 21:05:14,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:05:14,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:05:14,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:05:14,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:05:14,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:05:14,672 INFO L87 Difference]: Start difference. First operand 225 states and 295 transitions. Second operand has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:14,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:05:14,819 INFO L93 Difference]: Finished difference Result 475 states and 664 transitions. [2022-11-02 21:05:14,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:05:14,819 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 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 122 [2022-11-02 21:05:14,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:05:14,821 INFO L225 Difference]: With dead ends: 475 [2022-11-02 21:05:14,821 INFO L226 Difference]: Without dead ends: 356 [2022-11-02 21:05:14,822 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:05:14,822 INFO L413 NwaCegarLoop]: 291 mSDtfsCounter, 220 mSDsluCounter, 358 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 649 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:05:14,823 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [220 Valid, 649 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:05:14,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2022-11-02 21:05:14,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 227. [2022-11-02 21:05:14,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 226 states have (on average 1.3141592920353982) internal successors, (297), 226 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:14,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 297 transitions. [2022-11-02 21:05:14,827 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 297 transitions. Word has length 122 [2022-11-02 21:05:14,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:05:14,828 INFO L495 AbstractCegarLoop]: Abstraction has 227 states and 297 transitions. [2022-11-02 21:05:14,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:14,828 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 297 transitions. [2022-11-02 21:05:14,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-02 21:05:14,829 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:05:14,829 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 21:05:14,856 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (41)] Forceful destruction successful, exit code 0 [2022-11-02 21:05:15,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:05:15,056 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:05:15,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:05:15,057 INFO L85 PathProgramCache]: Analyzing trace with hash -6978375, now seen corresponding path program 1 times [2022-11-02 21:05:15,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:05:15,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1053190883] [2022-11-02 21:05:15,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:05:15,058 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:05:15,059 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:05:15,060 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:05:15,061 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2022-11-02 21:05:15,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:15,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 1257 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 21:05:15,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:05:15,903 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:05:15,903 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:05:15,904 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:05:15,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1053190883] [2022-11-02 21:05:15,904 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1053190883] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:05:15,904 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:05:15,904 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:05:15,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278455400] [2022-11-02 21:05:15,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:05:15,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:05:15,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:05:15,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:05:15,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:05:15,906 INFO L87 Difference]: Start difference. First operand 227 states and 297 transitions. Second operand has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:15,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:05:15,966 INFO L93 Difference]: Finished difference Result 475 states and 663 transitions. [2022-11-02 21:05:15,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:05:15,966 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 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 122 [2022-11-02 21:05:15,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:05:15,969 INFO L225 Difference]: With dead ends: 475 [2022-11-02 21:05:15,969 INFO L226 Difference]: Without dead ends: 356 [2022-11-02 21:05:15,970 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:05:15,970 INFO L413 NwaCegarLoop]: 293 mSDtfsCounter, 209 mSDsluCounter, 346 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 639 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:05:15,971 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [209 Valid, 639 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 21:05:15,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2022-11-02 21:05:15,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 231. [2022-11-02 21:05:15,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 230 states have (on average 1.3130434782608695) internal successors, (302), 230 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) [2022-11-02 21:05:15,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 302 transitions. [2022-11-02 21:05:15,978 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 302 transitions. Word has length 122 [2022-11-02 21:05:15,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:05:15,978 INFO L495 AbstractCegarLoop]: Abstraction has 231 states and 302 transitions. [2022-11-02 21:05:15,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:15,979 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 302 transitions. [2022-11-02 21:05:15,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-02 21:05:15,980 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:05:15,980 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 21:05:16,007 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (42)] Ended with exit code 0 [2022-11-02 21:05:16,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:05:16,207 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:05:16,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:05:16,207 INFO L85 PathProgramCache]: Analyzing trace with hash 694086203, now seen corresponding path program 1 times [2022-11-02 21:05:16,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:05:16,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [854304029] [2022-11-02 21:05:16,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:05:16,208 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:05:16,209 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:05:16,210 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:05:16,214 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (43)] Waiting until timeout for monitored process [2022-11-02 21:05:16,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:16,829 INFO L263 TraceCheckSpWp]: Trace formula consists of 1257 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 21:05:16,832 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:05:17,012 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:05:17,012 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:05:17,013 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:05:17,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [854304029] [2022-11-02 21:05:17,013 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [854304029] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:05:17,013 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:05:17,013 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:05:17,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280087728] [2022-11-02 21:05:17,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:05:17,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:05:17,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:05:17,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:05:17,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:05:17,015 INFO L87 Difference]: Start difference. First operand 231 states and 302 transitions. Second operand has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:17,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:05:17,162 INFO L93 Difference]: Finished difference Result 475 states and 662 transitions. [2022-11-02 21:05:17,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:05:17,162 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 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 122 [2022-11-02 21:05:17,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:05:17,163 INFO L225 Difference]: With dead ends: 475 [2022-11-02 21:05:17,163 INFO L226 Difference]: Without dead ends: 356 [2022-11-02 21:05:17,164 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:05:17,164 INFO L413 NwaCegarLoop]: 298 mSDtfsCounter, 203 mSDsluCounter, 349 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 647 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:05:17,164 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [203 Valid, 647 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:05:17,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2022-11-02 21:05:17,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 233. [2022-11-02 21:05:17,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 232 states have (on average 1.3103448275862069) internal successors, (304), 232 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:17,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 304 transitions. [2022-11-02 21:05:17,171 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 304 transitions. Word has length 122 [2022-11-02 21:05:17,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:05:17,172 INFO L495 AbstractCegarLoop]: Abstraction has 233 states and 304 transitions. [2022-11-02 21:05:17,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:17,172 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 304 transitions. [2022-11-02 21:05:17,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-02 21:05:17,173 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:05:17,173 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 21:05:17,196 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (43)] Ended with exit code 0 [2022-11-02 21:05:17,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:05:17,387 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:05:17,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:05:17,387 INFO L85 PathProgramCache]: Analyzing trace with hash 1374144573, now seen corresponding path program 1 times [2022-11-02 21:05:17,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:05:17,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [518684039] [2022-11-02 21:05:17,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:05:17,389 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:05:17,389 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:05:17,390 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:05:17,391 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9a6dd24-81db-4646-b1bc-2e6314ff1426/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (44)] Waiting until timeout for monitored process [2022-11-02 21:05:17,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:18,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 1257 conjuncts, 372 conjunts are in the unsatisfiable core [2022-11-02 21:05:18,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:05:42,061 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:05:42,062 INFO L328 TraceCheckSpWp]: Computing backward predicates...