./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.krebs.3.prop1-func-interl.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/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_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.krebs.3.prop1-func-interl.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/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_7468bb83-0c67-4e2c-ad41-849d91b0ea73/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 00dd9581d22f64efd69082a191ec7029f41a290244aef7e9060b3ab5ce6080c4 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-02 20:58:27,232 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:58:27,234 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:58:27,277 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:58:27,278 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:58:27,279 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:58:27,280 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:58:27,282 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:58:27,284 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:58:27,285 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:58:27,287 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:58:27,289 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:58:27,291 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:58:27,295 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:58:27,297 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:58:27,299 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:58:27,302 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:58:27,308 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:58:27,310 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:58:27,312 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:58:27,320 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:58:27,321 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:58:27,322 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:58:27,323 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:58:27,327 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:58:27,330 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:58:27,331 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:58:27,332 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:58:27,333 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:58:27,334 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:58:27,335 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:58:27,336 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:58:27,338 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:58:27,339 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:58:27,341 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:58:27,342 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:58:27,343 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:58:27,343 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:58:27,344 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:58:27,345 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:58:27,346 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:58:27,347 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-02 20:58:27,398 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:58:27,400 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:58:27,400 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:58:27,401 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:58:27,402 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:58:27,402 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:58:27,403 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:58:27,403 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:58:27,404 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:58:27,404 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:58:27,405 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:58:27,406 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:58:27,406 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:58:27,406 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:58:27,406 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:58:27,407 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:58:27,407 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:58:27,407 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:58:27,407 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:58:27,408 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:58:27,408 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:58:27,408 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:58:27,409 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:58:27,409 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:58:27,409 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:58:27,409 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:58:27,410 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:58:27,410 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:58:27,410 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:58:27,411 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:58:27,411 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_7468bb83-0c67-4e2c-ad41-849d91b0ea73/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 00dd9581d22f64efd69082a191ec7029f41a290244aef7e9060b3ab5ce6080c4 [2022-11-02 20:58:27,829 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:58:27,870 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:58:27,874 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:58:27,876 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:58:27,877 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:58:27,879 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.krebs.3.prop1-func-interl.c [2022-11-02 20:58:27,965 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/data/f0501a64b/58fada61d14f41fca7d96e47c348407b/FLAGba223f127 [2022-11-02 20:58:28,701 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:58:28,701 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.krebs.3.prop1-func-interl.c [2022-11-02 20:58:28,717 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/data/f0501a64b/58fada61d14f41fca7d96e47c348407b/FLAGba223f127 [2022-11-02 20:58:28,876 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/data/f0501a64b/58fada61d14f41fca7d96e47c348407b [2022-11-02 20:58:28,880 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:58:28,884 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:58:28,901 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:58:28,901 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:58:28,905 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:58:28,906 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:58:28" (1/1) ... [2022-11-02 20:58:28,907 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2fbebed4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:58:28, skipping insertion in model container [2022-11-02 20:58:28,908 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:58:28" (1/1) ... [2022-11-02 20:58:28,915 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:58:28,968 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:58:29,227 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_7468bb83-0c67-4e2c-ad41-849d91b0ea73/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.krebs.3.prop1-func-interl.c[1014,1027] [2022-11-02 20:58:29,618 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:58:29,622 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:58:29,650 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_7468bb83-0c67-4e2c-ad41-849d91b0ea73/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.krebs.3.prop1-func-interl.c[1014,1027] [2022-11-02 20:58:29,869 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:58:29,886 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:58:29,887 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:58:29 WrapperNode [2022-11-02 20:58:29,889 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:58:29,891 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:58:29,891 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:58:29,892 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:58:29,900 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:58:29" (1/1) ... [2022-11-02 20:58:29,944 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:58:29" (1/1) ... [2022-11-02 20:58:30,129 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1661 [2022-11-02 20:58:30,130 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:58:30,131 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:58:30,131 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:58:30,131 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:58:30,142 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:58:29" (1/1) ... [2022-11-02 20:58:30,142 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:58:29" (1/1) ... [2022-11-02 20:58:30,186 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:58:29" (1/1) ... [2022-11-02 20:58:30,186 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:58:29" (1/1) ... [2022-11-02 20:58:30,267 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:58:29" (1/1) ... [2022-11-02 20:58:30,274 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:58:29" (1/1) ... [2022-11-02 20:58:30,298 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:58:29" (1/1) ... [2022-11-02 20:58:30,316 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:58:29" (1/1) ... [2022-11-02 20:58:30,401 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:58:30,402 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:58:30,402 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:58:30,403 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:58:30,404 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:58:29" (1/1) ... [2022-11-02 20:58:30,411 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:58:30,423 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:58:30,440 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:58:30,470 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:58:30,496 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:58:30,497 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:58:30,997 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:58:30,999 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:59:48,670 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:59:48,682 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:59:48,683 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-02 20:59:48,686 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:59:48 BoogieIcfgContainer [2022-11-02 20:59:48,686 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:59:48,690 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:59:48,690 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:59:48,695 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:59:48,695 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:58:28" (1/3) ... [2022-11-02 20:59:48,697 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a658cea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:59:48, skipping insertion in model container [2022-11-02 20:59:48,697 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:58:29" (2/3) ... [2022-11-02 20:59:48,697 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a658cea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:59:48, skipping insertion in model container [2022-11-02 20:59:48,698 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:59:48" (3/3) ... [2022-11-02 20:59:48,701 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.krebs.3.prop1-func-interl.c [2022-11-02 20:59:48,723 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:59:48,723 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 20:59:48,797 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:59:48,806 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;@5ec23588, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:59:48,806 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 20:59:48,823 INFO L276 IsEmpty]: Start isEmpty. Operand has 101 states, 99 states have (on average 1.494949494949495) internal successors, (148), 100 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:59:48,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-02 20:59:48,832 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:59:48,832 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-02 20:59:48,833 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:59:48,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:59:48,841 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-11-02 20:59:48,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:59:48,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947401773] [2022-11-02 20:59:48,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:48,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:59:49,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:59:49,319 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:59:49,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:59:49,663 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:59:49,665 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-02 20:59:49,667 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-02 20:59:49,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:59:49,674 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-02 20:59:49,678 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-02 20:59:49,702 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-02 20:59:49,712 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.11 08:59:49 BoogieIcfgContainer [2022-11-02 20:59:49,713 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-02 20:59:49,713 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-02 20:59:49,713 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-02 20:59:49,714 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-02 20:59:49,714 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:59:48" (3/4) ... [2022-11-02 20:59:49,718 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-02 20:59:49,718 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-02 20:59:49,720 INFO L158 Benchmark]: Toolchain (without parser) took 80835.08ms. Allocated memory was 83.9MB in the beginning and 539.0MB in the end (delta: 455.1MB). Free memory was 44.3MB in the beginning and 460.4MB in the end (delta: -416.1MB). Peak memory consumption was 39.0MB. Max. memory is 16.1GB. [2022-11-02 20:59:49,720 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 83.9MB. Free memory was 63.2MB in the beginning and 63.2MB in the end (delta: 45.5kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 20:59:49,721 INFO L158 Benchmark]: CACSL2BoogieTranslator took 988.88ms. Allocated memory was 83.9MB in the beginning and 102.8MB in the end (delta: 18.9MB). Free memory was 62.6MB in the beginning and 65.5MB in the end (delta: -2.9MB). Peak memory consumption was 46.3MB. Max. memory is 16.1GB. [2022-11-02 20:59:49,722 INFO L158 Benchmark]: Boogie Procedure Inliner took 239.52ms. Allocated memory is still 102.8MB. Free memory was 65.5MB in the beginning and 49.6MB in the end (delta: 15.9MB). Peak memory consumption was 37.6MB. Max. memory is 16.1GB. [2022-11-02 20:59:49,723 INFO L158 Benchmark]: Boogie Preprocessor took 270.49ms. Allocated memory is still 102.8MB. Free memory was 49.6MB in the beginning and 44.2MB in the end (delta: 5.4MB). Peak memory consumption was 28.9MB. Max. memory is 16.1GB. [2022-11-02 20:59:49,723 INFO L158 Benchmark]: RCFGBuilder took 78284.48ms. Allocated memory was 102.8MB in the beginning and 539.0MB in the end (delta: 436.2MB). Free memory was 44.2MB in the beginning and 207.8MB in the end (delta: -163.6MB). Peak memory consumption was 327.0MB. Max. memory is 16.1GB. [2022-11-02 20:59:49,724 INFO L158 Benchmark]: TraceAbstraction took 1023.14ms. Allocated memory is still 539.0MB. Free memory was 206.7MB in the beginning and 460.4MB in the end (delta: -253.7MB). Peak memory consumption was 52.5MB. Max. memory is 16.1GB. [2022-11-02 20:59:49,725 INFO L158 Benchmark]: Witness Printer took 5.19ms. Allocated memory is still 539.0MB. Free memory is still 460.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 20:59:49,728 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36ms. Allocated memory is still 83.9MB. Free memory was 63.2MB in the beginning and 63.2MB in the end (delta: 45.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 988.88ms. Allocated memory was 83.9MB in the beginning and 102.8MB in the end (delta: 18.9MB). Free memory was 62.6MB in the beginning and 65.5MB in the end (delta: -2.9MB). Peak memory consumption was 46.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 239.52ms. Allocated memory is still 102.8MB. Free memory was 65.5MB in the beginning and 49.6MB in the end (delta: 15.9MB). Peak memory consumption was 37.6MB. Max. memory is 16.1GB. * Boogie Preprocessor took 270.49ms. Allocated memory is still 102.8MB. Free memory was 49.6MB in the beginning and 44.2MB in the end (delta: 5.4MB). Peak memory consumption was 28.9MB. Max. memory is 16.1GB. * RCFGBuilder took 78284.48ms. Allocated memory was 102.8MB in the beginning and 539.0MB in the end (delta: 436.2MB). Free memory was 44.2MB in the beginning and 207.8MB in the end (delta: -163.6MB). Peak memory consumption was 327.0MB. Max. memory is 16.1GB. * TraceAbstraction took 1023.14ms. Allocated memory is still 539.0MB. Free memory was 206.7MB in the beginning and 460.4MB in the end (delta: -253.7MB). Peak memory consumption was 52.5MB. Max. memory is 16.1GB. * Witness Printer took 5.19ms. Allocated memory is still 539.0MB. Free memory is still 460.4MB. There was no memory consumed. 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 210, overapproximation of bitwiseOr at line 205, overapproximation of bitwiseAnd at line 172. 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_2 mask_SORT_2 = (SORT_2)-1 >> (sizeof(SORT_2) * 8 - 8); [L29] const SORT_2 msb_SORT_2 = (SORT_2)1 << (8 - 1); [L31] const SORT_3 mask_SORT_3 = (SORT_3)-1 >> (sizeof(SORT_3) * 8 - 24); [L32] const SORT_3 msb_SORT_3 = (SORT_3)1 << (24 - 1); [L34] const SORT_4 mask_SORT_4 = (SORT_4)-1 >> (sizeof(SORT_4) * 8 - 32); [L35] const SORT_4 msb_SORT_4 = (SORT_4)1 << (32 - 1); [L37] const SORT_2 var_5 = 0; [L38] const SORT_1 var_30 = 0; [L39] const SORT_3 var_75 = 0; [L40] const SORT_4 var_77 = 50; [L41] const SORT_2 var_81 = 10; [L42] const SORT_4 var_85 = 1; [L43] const SORT_2 var_91 = 4; [L44] const SORT_4 var_93 = 2; [L45] const SORT_2 var_117 = 12; [L46] const SORT_2 var_140 = 2; [L47] const SORT_2 var_181 = 15; [L49] SORT_1 input_82; [L50] SORT_1 input_92; [L51] SORT_1 input_98; [L52] SORT_1 input_122; [L53] SORT_1 input_125; [L54] SORT_1 input_126; [L55] SORT_1 input_127; [L56] SORT_1 input_128; [L57] SORT_1 input_147; [L58] SORT_1 input_148; [L59] SORT_1 input_170; [L60] SORT_1 input_174; [L61] SORT_1 input_216; [L62] SORT_1 input_219; [L63] SORT_1 input_240; [L64] SORT_1 input_261; [L66] SORT_2 state_6 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L67] SORT_2 state_8 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L68] SORT_2 state_10 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L69] SORT_2 state_12 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L70] SORT_2 state_14 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L71] SORT_2 state_16 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L72] SORT_2 state_18 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L73] SORT_2 state_20 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L74] SORT_2 state_22 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L75] SORT_2 state_24 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L76] SORT_2 state_26 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L77] SORT_2 state_28 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L78] SORT_1 state_31 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L79] SORT_1 state_33 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L80] SORT_1 state_35 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L81] SORT_1 state_37 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L82] SORT_1 state_39 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L83] SORT_1 state_41 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L84] SORT_1 state_43 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L85] SORT_1 state_45 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L86] SORT_1 state_47 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L87] SORT_1 state_49 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L88] SORT_1 state_51 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L89] SORT_1 state_53 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L90] SORT_1 state_55 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L91] SORT_1 state_57 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L92] SORT_1 state_59 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L93] SORT_1 state_61 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L94] SORT_1 state_63 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L95] SORT_1 state_65 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L96] SORT_1 state_67 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L97] SORT_1 state_69 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L98] SORT_1 state_71 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L99] SORT_1 state_73 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L101] SORT_2 init_7_arg_1 = var_5; [L102] state_6 = init_7_arg_1 [L103] SORT_2 init_9_arg_1 = var_5; [L104] state_8 = init_9_arg_1 [L105] SORT_2 init_11_arg_1 = var_5; [L106] state_10 = init_11_arg_1 [L107] SORT_2 init_13_arg_1 = var_5; [L108] state_12 = init_13_arg_1 [L109] SORT_2 init_15_arg_1 = var_5; [L110] state_14 = init_15_arg_1 [L111] SORT_2 init_17_arg_1 = var_5; [L112] state_16 = init_17_arg_1 [L113] SORT_2 init_19_arg_1 = var_5; [L114] state_18 = init_19_arg_1 [L115] SORT_2 init_21_arg_1 = var_5; [L116] state_20 = init_21_arg_1 [L117] SORT_2 init_23_arg_1 = var_5; [L118] state_22 = init_23_arg_1 [L119] SORT_2 init_25_arg_1 = var_5; [L120] state_24 = init_25_arg_1 [L121] SORT_2 init_27_arg_1 = var_5; [L122] state_26 = init_27_arg_1 [L123] SORT_2 init_29_arg_1 = var_5; [L124] state_28 = init_29_arg_1 [L125] SORT_1 init_32_arg_1 = var_30; [L126] state_31 = init_32_arg_1 [L127] SORT_1 init_34_arg_1 = var_30; [L128] state_33 = init_34_arg_1 [L129] SORT_1 init_36_arg_1 = var_30; [L130] state_35 = init_36_arg_1 [L131] SORT_1 init_38_arg_1 = var_30; [L132] state_37 = init_38_arg_1 [L133] SORT_1 init_40_arg_1 = var_30; [L134] state_39 = init_40_arg_1 [L135] SORT_1 init_42_arg_1 = var_30; [L136] state_41 = init_42_arg_1 [L137] SORT_1 init_44_arg_1 = var_30; [L138] state_43 = init_44_arg_1 [L139] SORT_1 init_46_arg_1 = var_30; [L140] state_45 = init_46_arg_1 [L141] SORT_1 init_48_arg_1 = var_30; [L142] state_47 = init_48_arg_1 [L143] SORT_1 init_50_arg_1 = var_30; [L144] state_49 = init_50_arg_1 [L145] SORT_1 init_52_arg_1 = var_30; [L146] state_51 = init_52_arg_1 [L147] SORT_1 init_54_arg_1 = var_30; [L148] state_53 = init_54_arg_1 [L149] SORT_1 init_56_arg_1 = var_30; [L150] state_55 = init_56_arg_1 [L151] SORT_1 init_58_arg_1 = var_30; [L152] state_57 = init_58_arg_1 [L153] SORT_1 init_60_arg_1 = var_30; [L154] state_59 = init_60_arg_1 [L155] SORT_1 init_62_arg_1 = var_30; [L156] state_61 = init_62_arg_1 [L157] SORT_1 init_64_arg_1 = var_30; [L158] state_63 = init_64_arg_1 [L159] SORT_1 init_66_arg_1 = var_30; [L160] state_65 = init_66_arg_1 [L161] SORT_1 init_68_arg_1 = var_30; [L162] state_67 = init_68_arg_1 [L163] SORT_1 init_70_arg_1 = var_30; [L164] state_69 = init_70_arg_1 [L165] SORT_1 init_72_arg_1 = var_30; [L166] state_71 = init_72_arg_1 [L167] SORT_1 init_74_arg_1 = var_30; [L168] state_73 = init_74_arg_1 VAL [init_11_arg_1=0, init_13_arg_1=0, init_15_arg_1=0, init_17_arg_1=0, init_19_arg_1=0, init_21_arg_1=0, init_23_arg_1=0, init_25_arg_1=0, init_27_arg_1=0, init_29_arg_1=0, init_32_arg_1=0, init_34_arg_1=0, init_36_arg_1=0, init_38_arg_1=0, init_40_arg_1=0, init_42_arg_1=0, init_44_arg_1=0, init_46_arg_1=0, init_48_arg_1=0, init_50_arg_1=0, init_52_arg_1=0, init_54_arg_1=0, init_56_arg_1=0, init_58_arg_1=0, init_60_arg_1=0, init_62_arg_1=0, init_64_arg_1=0, init_66_arg_1=0, init_68_arg_1=0, init_70_arg_1=0, init_72_arg_1=0, init_74_arg_1=0, init_7_arg_1=0, init_9_arg_1=0, mask_SORT_1=1, mask_SORT_2=255, mask_SORT_3=4294967295, mask_SORT_4=4294967295, msb_SORT_1=1, msb_SORT_2=128, msb_SORT_3=8388608, msb_SORT_4=2147483648, state_10=0, state_12=0, state_14=0, state_16=0, state_18=0, state_20=0, state_22=0, state_24=0, state_26=0, state_28=0, state_31=0, state_33=0, state_35=0, state_37=0, state_39=0, state_41=0, state_43=0, state_45=0, state_47=0, state_49=0, state_51=0, state_53=0, state_55=0, state_57=0, state_59=0, state_6=0, state_61=0, state_63=0, state_65=0, state_67=0, state_69=0, state_71=0, state_73=0, state_8=0, var_117=12, var_140=2, var_181=15, var_30=0, var_5=0, var_75=0, var_77=50, var_81=10, var_85=1, var_91=4, var_93=2] [L171] input_82 = __VERIFIER_nondet_uchar() [L172] input_82 = input_82 & mask_SORT_1 [L173] input_92 = __VERIFIER_nondet_uchar() [L174] input_92 = input_92 & mask_SORT_1 [L175] input_98 = __VERIFIER_nondet_uchar() [L176] input_98 = input_98 & mask_SORT_1 [L177] input_122 = __VERIFIER_nondet_uchar() [L178] input_122 = input_122 & mask_SORT_1 [L179] input_125 = __VERIFIER_nondet_uchar() [L180] input_125 = input_125 & mask_SORT_1 [L181] input_126 = __VERIFIER_nondet_uchar() [L182] input_126 = input_126 & mask_SORT_1 [L183] input_127 = __VERIFIER_nondet_uchar() [L184] input_127 = input_127 & mask_SORT_1 [L185] input_128 = __VERIFIER_nondet_uchar() [L186] input_128 = input_128 & mask_SORT_1 [L187] input_147 = __VERIFIER_nondet_uchar() [L188] input_147 = input_147 & mask_SORT_1 [L189] input_148 = __VERIFIER_nondet_uchar() [L190] input_148 = input_148 & mask_SORT_1 [L191] input_170 = __VERIFIER_nondet_uchar() [L192] input_170 = input_170 & mask_SORT_1 [L193] input_174 = __VERIFIER_nondet_uchar() [L194] input_174 = input_174 & mask_SORT_1 [L195] input_216 = __VERIFIER_nondet_uchar() [L196] input_216 = input_216 & mask_SORT_1 [L197] input_219 = __VERIFIER_nondet_uchar() [L198] input_219 = input_219 & mask_SORT_1 [L199] input_240 = __VERIFIER_nondet_uchar() [L200] input_261 = __VERIFIER_nondet_uchar() [L203] SORT_3 var_76_arg_0 = var_75; [L204] SORT_2 var_76_arg_1 = state_28; [L205] SORT_4 var_76 = ((SORT_4)var_76_arg_0 << 8) | var_76_arg_1; [L206] var_76 = var_76 & mask_SORT_4 [L207] SORT_4 var_78_arg_0 = var_76; [L208] SORT_4 var_78_arg_1 = var_77; [L209] SORT_1 var_78 = var_78_arg_0 <= var_78_arg_1; [L210] SORT_1 var_79_arg_0 = ~state_73; [L211] var_79_arg_0 = var_79_arg_0 & mask_SORT_1 [L212] SORT_1 var_79_arg_1 = ~var_78; [L213] var_79_arg_1 = var_79_arg_1 & mask_SORT_1 [L214] SORT_1 var_79 = var_79_arg_0 & var_79_arg_1; [L215] var_79 = var_79 & mask_SORT_1 [L216] SORT_1 bad_80_arg_0 = var_79; [L217] CALL __VERIFIER_assert(!(bad_80_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, 101 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.9s, 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=101occurred 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: 0.0s SsaConstructionTime, 0.4s 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 20:59:49,757 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with 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-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/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_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.krebs.3.prop1-func-interl.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/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_7468bb83-0c67-4e2c-ad41-849d91b0ea73/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 00dd9581d22f64efd69082a191ec7029f41a290244aef7e9060b3ab5ce6080c4 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-02 20:59:52,172 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:59:52,174 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:59:52,204 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:59:52,205 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:59:52,206 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:59:52,208 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:59:52,210 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:59:52,212 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:59:52,213 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:59:52,214 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:59:52,215 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:59:52,216 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:59:52,217 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:59:52,218 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:59:52,220 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:59:52,221 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:59:52,222 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:59:52,224 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:59:52,227 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:59:52,229 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:59:52,235 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:59:52,236 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:59:52,237 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:59:52,242 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:59:52,242 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:59:52,242 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:59:52,244 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:59:52,244 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:59:52,245 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:59:52,246 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:59:52,256 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:59:52,257 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:59:52,259 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:59:52,261 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:59:52,261 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:59:52,262 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:59:52,262 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:59:52,262 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:59:52,264 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:59:52,265 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:59:52,267 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-11-02 20:59:52,323 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:59:52,324 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:59:52,324 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:59:52,324 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:59:52,325 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:59:52,325 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:59:52,326 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:59:52,326 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:59:52,327 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:59:52,327 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:59:52,327 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:59:52,327 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:59:52,328 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:59:52,328 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:59:52,328 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-02 20:59:52,328 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-02 20:59:52,328 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-02 20:59:52,328 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:59:52,329 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:59:52,329 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:59:52,329 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:59:52,329 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:59:52,329 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:59:52,330 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:59:52,333 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:59:52,334 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:59:52,334 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:59:52,334 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-02 20:59:52,335 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-02 20:59:52,335 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:59:52,335 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:59:52,336 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:59:52,336 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-02 20:59:52,336 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_7468bb83-0c67-4e2c-ad41-849d91b0ea73/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 00dd9581d22f64efd69082a191ec7029f41a290244aef7e9060b3ab5ce6080c4 [2022-11-02 20:59:52,708 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:59:52,728 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:59:52,731 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:59:52,732 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:59:52,733 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:59:52,735 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.krebs.3.prop1-func-interl.c [2022-11-02 20:59:52,804 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/data/51c9d6ebf/2b092d965a9c410e8e28e26fef472d81/FLAGdd5851f31 [2022-11-02 20:59:53,531 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:59:53,531 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.krebs.3.prop1-func-interl.c [2022-11-02 20:59:53,545 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/data/51c9d6ebf/2b092d965a9c410e8e28e26fef472d81/FLAGdd5851f31 [2022-11-02 20:59:53,702 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/data/51c9d6ebf/2b092d965a9c410e8e28e26fef472d81 [2022-11-02 20:59:53,705 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:59:53,706 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:59:53,707 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:59:53,707 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:59:53,713 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:59:53,714 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:59:53" (1/1) ... [2022-11-02 20:59:53,717 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a1a1069 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:59:53, skipping insertion in model container [2022-11-02 20:59:53,717 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:59:53" (1/1) ... [2022-11-02 20:59:53,725 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:59:53,805 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:59:53,955 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_7468bb83-0c67-4e2c-ad41-849d91b0ea73/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.krebs.3.prop1-func-interl.c[1014,1027] [2022-11-02 20:59:54,382 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:59:54,402 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:59:54,415 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_7468bb83-0c67-4e2c-ad41-849d91b0ea73/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.krebs.3.prop1-func-interl.c[1014,1027] [2022-11-02 20:59:54,589 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:59:54,605 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:59:54,605 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:59:54 WrapperNode [2022-11-02 20:59:54,605 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:59:54,607 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:59:54,607 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:59:54,607 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:59:54,614 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:59:54" (1/1) ... [2022-11-02 20:59:54,645 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:59:54" (1/1) ... [2022-11-02 20:59:54,740 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1661 [2022-11-02 20:59:54,740 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:59:54,741 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:59:54,741 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:59:54,741 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:59:54,751 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:59:54" (1/1) ... [2022-11-02 20:59:54,752 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:59:54" (1/1) ... [2022-11-02 20:59:54,761 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:59:54" (1/1) ... [2022-11-02 20:59:54,762 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:59:54" (1/1) ... [2022-11-02 20:59:54,794 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:59:54" (1/1) ... [2022-11-02 20:59:54,807 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:59:54" (1/1) ... [2022-11-02 20:59:54,830 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:59:54" (1/1) ... [2022-11-02 20:59:54,837 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:59:54" (1/1) ... [2022-11-02 20:59:54,881 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:59:54,903 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:59:54,903 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:59:54,903 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:59:54,904 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:59:54" (1/1) ... [2022-11-02 20:59:54,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:59:54,924 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:59:54,944 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:59:54,962 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:59:55,005 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:59:55,005 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:59:55,467 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:59:55,469 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:59:57,700 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:59:57,709 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:59:57,710 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-02 20:59:57,714 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:59:57 BoogieIcfgContainer [2022-11-02 20:59:57,714 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:59:57,718 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:59:57,718 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:59:57,722 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:59:57,722 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:59:53" (1/3) ... [2022-11-02 20:59:57,723 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d7305b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:59:57, skipping insertion in model container [2022-11-02 20:59:57,723 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:59:54" (2/3) ... [2022-11-02 20:59:57,723 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d7305b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:59:57, skipping insertion in model container [2022-11-02 20:59:57,724 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:59:57" (3/3) ... [2022-11-02 20:59:57,725 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.krebs.3.prop1-func-interl.c [2022-11-02 20:59:57,748 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:59:57,748 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 20:59:57,826 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:59:57,834 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;@5fe9057d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:59:57,835 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 20:59:57,839 INFO L276 IsEmpty]: Start isEmpty. Operand has 101 states, 99 states have (on average 1.494949494949495) internal successors, (148), 100 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:59:57,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-02 20:59:57,847 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:59:57,847 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-02 20:59:57,848 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:59:57,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:59:57,855 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-11-02 20:59:57,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:59:57,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1866645550] [2022-11-02 20:59:57,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:57,871 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:59:57,871 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:59:57,878 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:59:57,932 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-02 20:59:58,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:58,337 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-02 20:59:58,349 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:59:58,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:59:58,545 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:59:58,547 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:59:58,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1866645550] [2022-11-02 20:59:58,548 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1866645550] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:59:58,548 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:59:58,549 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:59:58,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341083238] [2022-11-02 20:59:58,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:59:58,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:59:58,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:59:58,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:59:58,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:59:58,630 INFO L87 Difference]: Start difference. First operand has 101 states, 99 states have (on average 1.494949494949495) internal successors, (148), 100 states have internal predecessors, (148), 0 states have call successors, (0), 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 20:59:59,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:59:59,063 INFO L93 Difference]: Finished difference Result 290 states and 435 transitions. [2022-11-02 20:59:59,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:59:59,066 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 20:59:59,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:59:59,077 INFO L225 Difference]: With dead ends: 290 [2022-11-02 20:59:59,078 INFO L226 Difference]: Without dead ends: 191 [2022-11-02 20:59:59,081 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:59:59,085 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 273 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 394 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:59:59,086 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [273 Valid, 394 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 20:59:59,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2022-11-02 20:59:59,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 99. [2022-11-02 20:59:59,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 98 states have (on average 1.469387755102041) internal successors, (144), 98 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:59:59,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 144 transitions. [2022-11-02 20:59:59,130 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 144 transitions. Word has length 5 [2022-11-02 20:59:59,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:59:59,131 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 144 transitions. [2022-11-02 20:59:59,131 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 20:59:59,131 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 144 transitions. [2022-11-02 20:59:59,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-02 20:59:59,134 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:59:59,134 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] [2022-11-02 20:59:59,156 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-02 20:59:59,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:59:59,350 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:59:59,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:59:59,351 INFO L85 PathProgramCache]: Analyzing trace with hash -1387976869, now seen corresponding path program 1 times [2022-11-02 20:59:59,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:59:59,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [559621428] [2022-11-02 20:59:59,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:59,355 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:59:59,355 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:59:59,356 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:59:59,358 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-02 21:00:00,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:00,305 INFO L263 TraceCheckSpWp]: Trace formula consists of 1393 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 21:00:00,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:00:00,521 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 21:00:00,521 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:00:00,521 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:00:00,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [559621428] [2022-11-02 21:00:00,522 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [559621428] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:00,522 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:00,522 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:00:00,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127994349] [2022-11-02 21:00:00,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:00,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:00:00,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:00:00,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:00:00,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:00:00,526 INFO L87 Difference]: Start difference. First operand 99 states and 144 transitions. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 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 21:00:00,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:00:00,688 INFO L93 Difference]: Finished difference Result 198 states and 290 transitions. [2022-11-02 21:00:00,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:00:00,690 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 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 98 [2022-11-02 21:00:00,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:00:00,691 INFO L225 Difference]: With dead ends: 198 [2022-11-02 21:00:00,691 INFO L226 Difference]: Without dead ends: 103 [2022-11-02 21:00:00,692 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:00:00,693 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 2 mSDsluCounter, 526 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 662 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 28 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:00:00,694 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 662 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 28 Unchecked, 0.1s Time] [2022-11-02 21:00:00,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2022-11-02 21:00:00,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2022-11-02 21:00:00,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 102 states have (on average 1.4607843137254901) internal successors, (149), 102 states have internal predecessors, (149), 0 states have call successors, (0), 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 21:00:00,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 149 transitions. [2022-11-02 21:00:00,703 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 149 transitions. Word has length 98 [2022-11-02 21:00:00,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:00:00,704 INFO L495 AbstractCegarLoop]: Abstraction has 103 states and 149 transitions. [2022-11-02 21:00:00,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 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 21:00:00,704 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 149 transitions. [2022-11-02 21:00:00,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-02 21:00:00,707 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:00,707 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] [2022-11-02 21:00:00,740 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-02 21:00:00,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:00:00,931 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:00:00,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:00,931 INFO L85 PathProgramCache]: Analyzing trace with hash 552605145, now seen corresponding path program 1 times [2022-11-02 21:00:00,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:00:00,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1732153305] [2022-11-02 21:00:00,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:00,935 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:00:00,935 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:00:00,936 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:00:00,944 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-02 21:00:01,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:01,874 INFO L263 TraceCheckSpWp]: Trace formula consists of 1393 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 21:00:01,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:00:02,194 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 21:00:02,195 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:00:02,195 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:00:02,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1732153305] [2022-11-02 21:00:02,196 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1732153305] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:02,200 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:02,200 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:00:02,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765119972] [2022-11-02 21:00:02,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:02,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:00:02,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:00:02,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:00:02,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:00:02,203 INFO L87 Difference]: Start difference. First operand 103 states and 149 transitions. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 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 21:00:02,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:00:02,353 INFO L93 Difference]: Finished difference Result 322 states and 472 transitions. [2022-11-02 21:00:02,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:00:02,353 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 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 98 [2022-11-02 21:00:02,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:00:02,355 INFO L225 Difference]: With dead ends: 322 [2022-11-02 21:00:02,355 INFO L226 Difference]: Without dead ends: 227 [2022-11-02 21:00:02,356 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:00:02,357 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 196 mSDsluCounter, 642 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 826 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 23 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:00:02,358 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [196 Valid, 826 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 23 Unchecked, 0.1s Time] [2022-11-02 21:00:02,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2022-11-02 21:00:02,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 133. [2022-11-02 21:00:02,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 132 states have (on average 1.4621212121212122) internal successors, (193), 132 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 21:00:02,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 193 transitions. [2022-11-02 21:00:02,367 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 193 transitions. Word has length 98 [2022-11-02 21:00:02,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:00:02,367 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 193 transitions. [2022-11-02 21:00:02,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 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 21:00:02,368 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 193 transitions. [2022-11-02 21:00:02,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-02 21:00:02,369 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:02,374 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] [2022-11-02 21:00:02,403 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-02 21:00:02,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:00:02,598 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:00:02,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:02,598 INFO L85 PathProgramCache]: Analyzing trace with hash 135208539, now seen corresponding path program 1 times [2022-11-02 21:00:02,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:00:02,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1578240465] [2022-11-02 21:00:02,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:02,601 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:00:02,601 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:00:02,602 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:00:02,611 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-02 21:00:03,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:03,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 1393 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 21:00:03,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:00:03,803 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 21:00:03,804 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:00:03,804 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:00:03,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1578240465] [2022-11-02 21:00:03,805 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1578240465] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:03,805 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:03,805 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:00:03,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006512618] [2022-11-02 21:00:03,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:03,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:00:03,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:00:03,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:00:03,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:00:03,808 INFO L87 Difference]: Start difference. First operand 133 states and 193 transitions. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 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 21:00:04,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:00:04,060 INFO L93 Difference]: Finished difference Result 382 states and 560 transitions. [2022-11-02 21:00:04,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 21:00:04,061 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 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 98 [2022-11-02 21:00:04,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:00:04,063 INFO L225 Difference]: With dead ends: 382 [2022-11-02 21:00:04,063 INFO L226 Difference]: Without dead ends: 287 [2022-11-02 21:00:04,065 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-02 21:00:04,066 INFO L413 NwaCegarLoop]: 210 mSDtfsCounter, 413 mSDsluCounter, 705 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 413 SdHoareTripleChecker+Valid, 915 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 24 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:00:04,066 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [413 Valid, 915 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 24 Unchecked, 0.2s Time] [2022-11-02 21:00:04,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2022-11-02 21:00:04,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 153. [2022-11-02 21:00:04,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 152 states have (on average 1.4605263157894737) internal successors, (222), 152 states have internal predecessors, (222), 0 states have call successors, (0), 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 21:00:04,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 222 transitions. [2022-11-02 21:00:04,078 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 222 transitions. Word has length 98 [2022-11-02 21:00:04,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:00:04,078 INFO L495 AbstractCegarLoop]: Abstraction has 153 states and 222 transitions. [2022-11-02 21:00:04,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 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 21:00:04,079 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 222 transitions. [2022-11-02 21:00:04,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-02 21:00:04,081 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:04,081 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] [2022-11-02 21:00:04,114 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-02 21:00:04,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:00:04,308 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:00:04,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:04,308 INFO L85 PathProgramCache]: Analyzing trace with hash -762184739, now seen corresponding path program 1 times [2022-11-02 21:00:04,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:00:04,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1573254318] [2022-11-02 21:00:04,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:04,310 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:00:04,311 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:00:04,312 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:00:04,315 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-02 21:00:05,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:05,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 1393 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 21:00:05,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:00:05,463 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 21:00:05,463 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:00:05,463 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:00:05,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1573254318] [2022-11-02 21:00:05,464 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1573254318] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:05,464 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:05,464 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:00:05,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377684909] [2022-11-02 21:00:05,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:05,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:00:05,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:00:05,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:00:05,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:00:05,466 INFO L87 Difference]: Start difference. First operand 153 states and 222 transitions. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 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 21:00:05,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:00:05,705 INFO L93 Difference]: Finished difference Result 382 states and 559 transitions. [2022-11-02 21:00:05,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 21:00:05,706 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 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 98 [2022-11-02 21:00:05,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:00:05,708 INFO L225 Difference]: With dead ends: 382 [2022-11-02 21:00:05,708 INFO L226 Difference]: Without dead ends: 287 [2022-11-02 21:00:05,709 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-02 21:00:05,710 INFO L413 NwaCegarLoop]: 222 mSDtfsCounter, 391 mSDsluCounter, 804 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 391 SdHoareTripleChecker+Valid, 1026 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 37 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:00:05,711 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [391 Valid, 1026 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 37 Unchecked, 0.2s Time] [2022-11-02 21:00:05,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2022-11-02 21:00:05,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 161. [2022-11-02 21:00:05,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 160 states have (on average 1.45625) internal successors, (233), 160 states have internal predecessors, (233), 0 states have call successors, (0), 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 21:00:05,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 233 transitions. [2022-11-02 21:00:05,721 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 233 transitions. Word has length 98 [2022-11-02 21:00:05,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:00:05,722 INFO L495 AbstractCegarLoop]: Abstraction has 161 states and 233 transitions. [2022-11-02 21:00:05,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 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 21:00:05,722 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 233 transitions. [2022-11-02 21:00:05,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-02 21:00:05,724 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:05,725 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] [2022-11-02 21:00:05,759 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-02 21:00:05,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:00:05,956 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:00:05,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:05,956 INFO L85 PathProgramCache]: Analyzing trace with hash -1606190241, now seen corresponding path program 1 times [2022-11-02 21:00:05,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:00:05,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [688075040] [2022-11-02 21:00:05,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:05,958 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:00:05,958 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:00:05,959 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:00:05,960 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-02 21:00:06,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:06,767 INFO L263 TraceCheckSpWp]: Trace formula consists of 1393 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 21:00:06,776 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:00:07,114 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 21:00:07,114 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:00:07,114 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:00:07,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [688075040] [2022-11-02 21:00:07,115 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [688075040] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:07,115 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:07,115 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:00:07,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530859505] [2022-11-02 21:00:07,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:07,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:00:07,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:00:07,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:00:07,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:00:07,117 INFO L87 Difference]: Start difference. First operand 161 states and 233 transitions. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 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 21:00:07,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:00:07,311 INFO L93 Difference]: Finished difference Result 448 states and 655 transitions. [2022-11-02 21:00:07,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 21:00:07,313 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 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 98 [2022-11-02 21:00:07,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:00:07,315 INFO L225 Difference]: With dead ends: 448 [2022-11-02 21:00:07,315 INFO L226 Difference]: Without dead ends: 353 [2022-11-02 21:00:07,316 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-02 21:00:07,317 INFO L413 NwaCegarLoop]: 231 mSDtfsCounter, 385 mSDsluCounter, 711 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 385 SdHoareTripleChecker+Valid, 942 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 17 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:00:07,318 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [385 Valid, 942 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 17 Unchecked, 0.1s Time] [2022-11-02 21:00:07,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2022-11-02 21:00:07,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 231. [2022-11-02 21:00:07,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 230 states have (on average 1.4565217391304348) internal successors, (335), 230 states have internal predecessors, (335), 0 states have call successors, (0), 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 21:00:07,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 335 transitions. [2022-11-02 21:00:07,339 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 335 transitions. Word has length 98 [2022-11-02 21:00:07,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:00:07,342 INFO L495 AbstractCegarLoop]: Abstraction has 231 states and 335 transitions. [2022-11-02 21:00:07,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 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 21:00:07,342 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 335 transitions. [2022-11-02 21:00:07,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-02 21:00:07,352 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:07,352 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] [2022-11-02 21:00:07,385 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-02 21:00:07,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:00:07,579 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:00:07,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:07,580 INFO L85 PathProgramCache]: Analyzing trace with hash -904590367, now seen corresponding path program 1 times [2022-11-02 21:00:07,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:00:07,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1420588468] [2022-11-02 21:00:07,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:07,582 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:00:07,582 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:00:07,583 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:00:07,595 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-02 21:00:08,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:08,289 INFO L263 TraceCheckSpWp]: Trace formula consists of 1393 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 21:00:08,295 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:00:08,708 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 21:00:08,708 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:00:08,709 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:00:08,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1420588468] [2022-11-02 21:00:08,709 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1420588468] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:08,709 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:08,709 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:00:08,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723736268] [2022-11-02 21:00:08,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:08,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:00:08,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:00:08,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:00:08,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:00:08,711 INFO L87 Difference]: Start difference. First operand 231 states and 335 transitions. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 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 21:00:08,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:00:08,851 INFO L93 Difference]: Finished difference Result 416 states and 605 transitions. [2022-11-02 21:00:08,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:00:08,852 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 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 98 [2022-11-02 21:00:08,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:00:08,854 INFO L225 Difference]: With dead ends: 416 [2022-11-02 21:00:08,854 INFO L226 Difference]: Without dead ends: 321 [2022-11-02 21:00:08,855 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:00:08,856 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 118 mSDsluCounter, 670 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 806 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 17 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:00:08,856 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 806 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 17 Unchecked, 0.1s Time] [2022-11-02 21:00:08,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2022-11-02 21:00:08,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 321. [2022-11-02 21:00:08,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 320 states have (on average 1.45) internal successors, (464), 320 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:08,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 464 transitions. [2022-11-02 21:00:08,873 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 464 transitions. Word has length 98 [2022-11-02 21:00:08,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:00:08,874 INFO L495 AbstractCegarLoop]: Abstraction has 321 states and 464 transitions. [2022-11-02 21:00:08,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 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 21:00:08,875 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 464 transitions. [2022-11-02 21:00:08,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-02 21:00:08,880 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:08,886 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] [2022-11-02 21:00:08,903 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-02 21:00:09,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:00:09,089 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:00:09,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:09,090 INFO L85 PathProgramCache]: Analyzing trace with hash 1467148895, now seen corresponding path program 1 times [2022-11-02 21:00:09,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:00:09,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1242393801] [2022-11-02 21:00:09,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:09,091 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:00:09,091 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:00:09,092 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:00:09,096 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-02 21:00:09,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:09,867 INFO L263 TraceCheckSpWp]: Trace formula consists of 1393 conjuncts, 44 conjunts are in the unsatisfiable core [2022-11-02 21:00:09,876 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:00:11,697 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:00:11,697 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:00:20,752 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 21:00:20,753 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:00:20,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1242393801] [2022-11-02 21:00:20,753 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1242393801] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:00:20,753 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:00:20,766 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2022-11-02 21:00:20,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183156174] [2022-11-02 21:00:20,767 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:00:20,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 21:00:20,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:00:20,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 21:00:20,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=229, Unknown=2, NotChecked=0, Total=306 [2022-11-02 21:00:20,769 INFO L87 Difference]: Start difference. First operand 321 states and 464 transitions. Second operand has 18 states, 18 states have (on average 10.777777777777779) internal successors, (194), 18 states have internal predecessors, (194), 0 states have call successors, (0), 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 21:00:20,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:00:20,936 INFO L93 Difference]: Finished difference Result 610 states and 883 transitions. [2022-11-02 21:00:20,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 21:00:20,937 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 10.777777777777779) internal successors, (194), 18 states have internal predecessors, (194), 0 states have call successors, (0), 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 98 [2022-11-02 21:00:20,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:00:20,940 INFO L225 Difference]: With dead ends: 610 [2022-11-02 21:00:20,940 INFO L226 Difference]: Without dead ends: 608 [2022-11-02 21:00:20,940 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=83, Invalid=257, Unknown=2, NotChecked=0, Total=342 [2022-11-02 21:00:20,943 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 240 mSDsluCounter, 1830 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 240 SdHoareTripleChecker+Valid, 1992 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 24 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:00:20,944 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [240 Valid, 1992 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 24 Unchecked, 0.0s Time] [2022-11-02 21:00:20,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2022-11-02 21:00:20,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 608. [2022-11-02 21:00:20,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 608 states, 607 states have (on average 1.4514003294892917) internal successors, (881), 607 states have internal predecessors, (881), 0 states have call successors, (0), 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 21:00:20,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 608 states to 608 states and 881 transitions. [2022-11-02 21:00:20,957 INFO L78 Accepts]: Start accepts. Automaton has 608 states and 881 transitions. Word has length 98 [2022-11-02 21:00:20,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:00:20,957 INFO L495 AbstractCegarLoop]: Abstraction has 608 states and 881 transitions. [2022-11-02 21:00:20,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 10.777777777777779) internal successors, (194), 18 states have internal predecessors, (194), 0 states have call successors, (0), 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 21:00:20,958 INFO L276 IsEmpty]: Start isEmpty. Operand 608 states and 881 transitions. [2022-11-02 21:00:20,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-02 21:00:20,960 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:20,961 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] [2022-11-02 21:00:20,984 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-02 21:00:21,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:00:21,183 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:00:21,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:21,183 INFO L85 PathProgramCache]: Analyzing trace with hash -378218271, now seen corresponding path program 1 times [2022-11-02 21:00:21,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:00:21,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1078060084] [2022-11-02 21:00:21,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:21,184 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:00:21,185 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:00:21,185 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:00:21,187 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-02 21:00:21,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:21,979 INFO L263 TraceCheckSpWp]: Trace formula consists of 1393 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 21:00:21,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:00:22,326 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 21:00:22,327 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:00:22,327 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:00:22,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1078060084] [2022-11-02 21:00:22,327 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1078060084] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:22,327 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:22,327 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:00:22,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422292059] [2022-11-02 21:00:22,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:22,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:00:22,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:00:22,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:00:22,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:00:22,329 INFO L87 Difference]: Start difference. First operand 608 states and 881 transitions. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 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 21:00:22,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:00:22,571 INFO L93 Difference]: Finished difference Result 941 states and 1365 transitions. [2022-11-02 21:00:22,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 21:00:22,573 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 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 98 [2022-11-02 21:00:22,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:00:22,577 INFO L225 Difference]: With dead ends: 941 [2022-11-02 21:00:22,577 INFO L226 Difference]: Without dead ends: 846 [2022-11-02 21:00:22,578 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-02 21:00:22,580 INFO L413 NwaCegarLoop]: 280 mSDtfsCounter, 281 mSDsluCounter, 886 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 281 SdHoareTripleChecker+Valid, 1166 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 14 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:00:22,581 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [281 Valid, 1166 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 14 Unchecked, 0.2s Time] [2022-11-02 21:00:22,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 846 states. [2022-11-02 21:00:22,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 846 to 708. [2022-11-02 21:00:22,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 708 states, 707 states have (on average 1.4469589816124468) internal successors, (1023), 707 states have internal predecessors, (1023), 0 states have call successors, (0), 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 21:00:22,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 708 states to 708 states and 1023 transitions. [2022-11-02 21:00:22,599 INFO L78 Accepts]: Start accepts. Automaton has 708 states and 1023 transitions. Word has length 98 [2022-11-02 21:00:22,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:00:22,600 INFO L495 AbstractCegarLoop]: Abstraction has 708 states and 1023 transitions. [2022-11-02 21:00:22,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 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 21:00:22,600 INFO L276 IsEmpty]: Start isEmpty. Operand 708 states and 1023 transitions. [2022-11-02 21:00:22,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-02 21:00:22,602 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:22,602 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] [2022-11-02 21:00:22,626 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-02 21:00:22,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:00:22,825 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:00:22,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:22,825 INFO L85 PathProgramCache]: Analyzing trace with hash 322846307, now seen corresponding path program 1 times [2022-11-02 21:00:22,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:00:22,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1910879356] [2022-11-02 21:00:22,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:22,832 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:00:22,832 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:00:22,833 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:00:22,835 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-02 21:00:23,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:23,535 INFO L263 TraceCheckSpWp]: Trace formula consists of 1393 conjuncts, 38 conjunts are in the unsatisfiable core [2022-11-02 21:00:23,544 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:00:25,149 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:00:25,150 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:00:27,860 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 21:00:27,860 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:00:27,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1910879356] [2022-11-02 21:00:27,861 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1910879356] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:00:27,861 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:00:27,861 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2022-11-02 21:00:27,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365587434] [2022-11-02 21:00:27,862 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:00:27,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 21:00:27,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:00:27,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 21:00:27,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2022-11-02 21:00:27,863 INFO L87 Difference]: Start difference. First operand 708 states and 1023 transitions. Second operand has 18 states, 18 states have (on average 10.777777777777779) internal successors, (194), 18 states have internal predecessors, (194), 0 states have call successors, (0), 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 21:00:28,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:00:28,004 INFO L93 Difference]: Finished difference Result 1204 states and 1744 transitions. [2022-11-02 21:00:28,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 21:00:28,005 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 10.777777777777779) internal successors, (194), 18 states have internal predecessors, (194), 0 states have call successors, (0), 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 98 [2022-11-02 21:00:28,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:00:28,009 INFO L225 Difference]: With dead ends: 1204 [2022-11-02 21:00:28,009 INFO L226 Difference]: Without dead ends: 1202 [2022-11-02 21:00:28,010 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2022-11-02 21:00:28,011 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 434 mSDsluCounter, 1476 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 434 SdHoareTripleChecker+Valid, 1640 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 47 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:00:28,011 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [434 Valid, 1640 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 47 Unchecked, 0.0s Time] [2022-11-02 21:00:28,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1202 states. [2022-11-02 21:00:28,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1202 to 1202. [2022-11-02 21:00:28,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1202 states, 1201 states have (on average 1.450457951706911) internal successors, (1742), 1201 states have internal predecessors, (1742), 0 states have call successors, (0), 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 21:00:28,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1202 states to 1202 states and 1742 transitions. [2022-11-02 21:00:28,036 INFO L78 Accepts]: Start accepts. Automaton has 1202 states and 1742 transitions. Word has length 98 [2022-11-02 21:00:28,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:00:28,037 INFO L495 AbstractCegarLoop]: Abstraction has 1202 states and 1742 transitions. [2022-11-02 21:00:28,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 10.777777777777779) internal successors, (194), 18 states have internal predecessors, (194), 0 states have call successors, (0), 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 21:00:28,037 INFO L276 IsEmpty]: Start isEmpty. Operand 1202 states and 1742 transitions. [2022-11-02 21:00:28,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-02 21:00:28,040 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:28,040 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] [2022-11-02 21:00:28,063 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-02 21:00:28,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:00:28,260 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:00:28,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:28,260 INFO L85 PathProgramCache]: Analyzing trace with hash -1604992281, now seen corresponding path program 1 times [2022-11-02 21:00:28,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:00:28,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1279828618] [2022-11-02 21:00:28,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:28,262 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:00:28,262 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:00:28,263 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:00:28,264 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-02 21:00:28,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:28,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 1393 conjuncts, 36 conjunts are in the unsatisfiable core [2022-11-02 21:00:28,940 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:00:30,182 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 21:00:30,183 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:00:39,752 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 21:00:39,752 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:00:39,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1279828618] [2022-11-02 21:00:39,752 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1279828618] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:00:39,753 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:00:39,753 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2022-11-02 21:00:39,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605156584] [2022-11-02 21:00:39,753 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:00:39,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-02 21:00:39,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:00:39,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-02 21:00:39,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=134, Unknown=4, NotChecked=0, Total=182 [2022-11-02 21:00:39,755 INFO L87 Difference]: Start difference. First operand 1202 states and 1742 transitions. Second operand has 14 states, 14 states have (on average 13.857142857142858) internal successors, (194), 14 states have internal predecessors, (194), 0 states have call successors, (0), 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 21:00:39,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:00:39,798 INFO L93 Difference]: Finished difference Result 2272 states and 3287 transitions. [2022-11-02 21:00:39,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 21:00:39,799 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 13.857142857142858) internal successors, (194), 14 states have internal predecessors, (194), 0 states have call successors, (0), 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 98 [2022-11-02 21:00:39,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:00:39,806 INFO L225 Difference]: With dead ends: 2272 [2022-11-02 21:00:39,806 INFO L226 Difference]: Without dead ends: 2270 [2022-11-02 21:00:39,807 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=44, Invalid=134, Unknown=4, NotChecked=0, Total=182 [2022-11-02 21:00:39,808 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 562 mSDsluCounter, 1339 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 562 SdHoareTripleChecker+Valid, 1538 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 33 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:00:39,808 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [562 Valid, 1538 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 33 Unchecked, 0.0s Time] [2022-11-02 21:00:39,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2270 states. [2022-11-02 21:00:39,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2270 to 1755. [2022-11-02 21:00:39,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1755 states, 1754 states have (on average 1.4498289623717218) internal successors, (2543), 1754 states have internal predecessors, (2543), 0 states have call successors, (0), 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 21:00:39,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1755 states to 1755 states and 2543 transitions. [2022-11-02 21:00:39,847 INFO L78 Accepts]: Start accepts. Automaton has 1755 states and 2543 transitions. Word has length 98 [2022-11-02 21:00:39,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:00:39,847 INFO L495 AbstractCegarLoop]: Abstraction has 1755 states and 2543 transitions. [2022-11-02 21:00:39,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 13.857142857142858) internal successors, (194), 14 states have internal predecessors, (194), 0 states have call successors, (0), 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 21:00:39,848 INFO L276 IsEmpty]: Start isEmpty. Operand 1755 states and 2543 transitions. [2022-11-02 21:00:39,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-02 21:00:39,851 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:39,851 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] [2022-11-02 21:00:39,883 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-11-02 21:00:40,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:00:40,065 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:00:40,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:40,066 INFO L85 PathProgramCache]: Analyzing trace with hash -2097618455, now seen corresponding path program 1 times [2022-11-02 21:00:40,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:00:40,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1371828109] [2022-11-02 21:00:40,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:40,067 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:00:40,067 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:00:40,068 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:00:40,077 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-02 21:00:40,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:40,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 1393 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 21:00:40,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:00:40,850 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 21:00:40,850 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:00:40,850 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:00:40,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1371828109] [2022-11-02 21:00:40,851 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1371828109] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:40,851 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:40,851 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:00:40,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366763139] [2022-11-02 21:00:40,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:40,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:00:40,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:00:40,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:00:40,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:00:40,852 INFO L87 Difference]: Start difference. First operand 1755 states and 2543 transitions. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 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 21:00:41,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:00:41,114 INFO L93 Difference]: Finished difference Result 3936 states and 5675 transitions. [2022-11-02 21:00:41,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 21:00:41,115 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 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 98 [2022-11-02 21:00:41,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:00:41,124 INFO L225 Difference]: With dead ends: 3936 [2022-11-02 21:00:41,124 INFO L226 Difference]: Without dead ends: 3014 [2022-11-02 21:00:41,126 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-02 21:00:41,126 INFO L413 NwaCegarLoop]: 340 mSDtfsCounter, 336 mSDsluCounter, 901 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 336 SdHoareTripleChecker+Valid, 1241 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 14 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:00:41,127 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [336 Valid, 1241 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 14 Unchecked, 0.2s Time] [2022-11-02 21:00:41,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3014 states. [2022-11-02 21:00:41,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3014 to 1771. [2022-11-02 21:00:41,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1771 states, 1770 states have (on average 1.4367231638418079) internal successors, (2543), 1770 states have internal predecessors, (2543), 0 states have call successors, (0), 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 21:00:41,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1771 states to 1771 states and 2543 transitions. [2022-11-02 21:00:41,184 INFO L78 Accepts]: Start accepts. Automaton has 1771 states and 2543 transitions. Word has length 98 [2022-11-02 21:00:41,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:00:41,184 INFO L495 AbstractCegarLoop]: Abstraction has 1771 states and 2543 transitions. [2022-11-02 21:00:41,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 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 21:00:41,185 INFO L276 IsEmpty]: Start isEmpty. Operand 1771 states and 2543 transitions. [2022-11-02 21:00:41,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-02 21:00:41,189 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:41,189 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] [2022-11-02 21:00:41,211 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-11-02 21:00:41,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:00:41,411 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:00:41,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:41,411 INFO L85 PathProgramCache]: Analyzing trace with hash 168762731, now seen corresponding path program 1 times [2022-11-02 21:00:41,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:00:41,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [646111031] [2022-11-02 21:00:41,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:41,412 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:00:41,413 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:00:41,413 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:00:41,415 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-11-02 21:00:42,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:42,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 1393 conjuncts, 56 conjunts are in the unsatisfiable core [2022-11-02 21:00:42,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:00:43,611 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:00:43,611 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:00:53,062 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 21:00:53,062 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:00:53,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [646111031] [2022-11-02 21:00:53,063 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [646111031] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:00:53,063 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:00:53,063 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2022-11-02 21:00:53,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59161604] [2022-11-02 21:00:53,063 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:00:53,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 21:00:53,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:00:53,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 21:00:53,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=229, Unknown=2, NotChecked=0, Total=306 [2022-11-02 21:00:53,065 INFO L87 Difference]: Start difference. First operand 1771 states and 2543 transitions. Second operand has 18 states, 18 states have (on average 10.777777777777779) internal successors, (194), 18 states have internal predecessors, (194), 0 states have call successors, (0), 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 21:00:53,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:00:53,330 INFO L93 Difference]: Finished difference Result 3532 states and 5074 transitions. [2022-11-02 21:00:53,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 21:00:53,331 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 10.777777777777779) internal successors, (194), 18 states have internal predecessors, (194), 0 states have call successors, (0), 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 98 [2022-11-02 21:00:53,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:00:53,340 INFO L225 Difference]: With dead ends: 3532 [2022-11-02 21:00:53,340 INFO L226 Difference]: Without dead ends: 3530 [2022-11-02 21:00:53,341 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=85, Invalid=255, Unknown=2, NotChecked=0, Total=342 [2022-11-02 21:00:53,343 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 530 mSDsluCounter, 1050 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 530 SdHoareTripleChecker+Valid, 1177 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 29 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:00:53,343 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [530 Valid, 1177 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 29 Unchecked, 0.0s Time] [2022-11-02 21:00:53,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3530 states. [2022-11-02 21:00:53,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3530 to 3345. [2022-11-02 21:00:53,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3345 states, 3344 states have (on average 1.4386961722488039) internal successors, (4811), 3344 states have internal predecessors, (4811), 0 states have call successors, (0), 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 21:00:53,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3345 states to 3345 states and 4811 transitions. [2022-11-02 21:00:53,419 INFO L78 Accepts]: Start accepts. Automaton has 3345 states and 4811 transitions. Word has length 98 [2022-11-02 21:00:53,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:00:53,420 INFO L495 AbstractCegarLoop]: Abstraction has 3345 states and 4811 transitions. [2022-11-02 21:00:53,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 10.777777777777779) internal successors, (194), 18 states have internal predecessors, (194), 0 states have call successors, (0), 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 21:00:53,420 INFO L276 IsEmpty]: Start isEmpty. Operand 3345 states and 4811 transitions. [2022-11-02 21:00:53,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-02 21:00:53,425 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:53,425 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] [2022-11-02 21:00:53,454 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-11-02 21:00:53,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:00:53,642 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:00:53,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:53,642 INFO L85 PathProgramCache]: Analyzing trace with hash 592409453, now seen corresponding path program 1 times [2022-11-02 21:00:53,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:00:53,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [901026583] [2022-11-02 21:00:53,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:53,643 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:00:53,643 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:00:53,644 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:00:53,646 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-11-02 21:00:54,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:54,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 1393 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 21:00:54,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:00:54,526 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 21:00:54,526 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:00:54,526 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:00:54,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [901026583] [2022-11-02 21:00:54,526 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [901026583] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:54,526 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:54,526 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:00:54,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954525126] [2022-11-02 21:00:54,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:54,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:00:54,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:00:54,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:00:54,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:00:54,528 INFO L87 Difference]: Start difference. First operand 3345 states and 4811 transitions. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 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 21:00:54,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:00:54,892 INFO L93 Difference]: Finished difference Result 4919 states and 7082 transitions. [2022-11-02 21:00:54,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 21:00:54,894 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 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 98 [2022-11-02 21:00:54,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:00:54,906 INFO L225 Difference]: With dead ends: 4919 [2022-11-02 21:00:54,906 INFO L226 Difference]: Without dead ends: 4520 [2022-11-02 21:00:54,907 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-02 21:00:54,908 INFO L413 NwaCegarLoop]: 286 mSDtfsCounter, 288 mSDsluCounter, 889 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 1175 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 14 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 21:00:54,908 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [288 Valid, 1175 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 14 Unchecked, 0.3s Time] [2022-11-02 21:00:54,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4520 states. [2022-11-02 21:00:54,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4520 to 3885. [2022-11-02 21:00:54,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3885 states, 3884 states have (on average 1.433058702368692) internal successors, (5566), 3884 states have internal predecessors, (5566), 0 states have call successors, (0), 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 21:00:54,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3885 states to 3885 states and 5566 transitions. [2022-11-02 21:00:54,991 INFO L78 Accepts]: Start accepts. Automaton has 3885 states and 5566 transitions. Word has length 98 [2022-11-02 21:00:54,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:00:54,991 INFO L495 AbstractCegarLoop]: Abstraction has 3885 states and 5566 transitions. [2022-11-02 21:00:54,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 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 21:00:54,991 INFO L276 IsEmpty]: Start isEmpty. Operand 3885 states and 5566 transitions. [2022-11-02 21:00:54,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-02 21:00:54,998 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:54,998 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] [2022-11-02 21:00:55,030 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-11-02 21:00:55,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:00:55,214 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:00:55,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:55,215 INFO L85 PathProgramCache]: Analyzing trace with hash -687454225, now seen corresponding path program 1 times [2022-11-02 21:00:55,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:00:55,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [872637151] [2022-11-02 21:00:55,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:55,216 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:00:55,216 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:00:55,217 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:00:55,219 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-11-02 21:00:55,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:55,819 INFO L263 TraceCheckSpWp]: Trace formula consists of 1393 conjuncts, 56 conjunts are in the unsatisfiable core [2022-11-02 21:00:55,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:00:57,349 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:00:57,349 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:01:06,508 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 21:01:06,508 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:01:06,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [872637151] [2022-11-02 21:01:06,508 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [872637151] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:01:06,508 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:01:06,508 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2022-11-02 21:01:06,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82979847] [2022-11-02 21:01:06,509 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:01:06,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 21:01:06,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:01:06,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 21:01:06,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=229, Unknown=2, NotChecked=0, Total=306 [2022-11-02 21:01:06,510 INFO L87 Difference]: Start difference. First operand 3885 states and 5566 transitions. Second operand has 18 states, 18 states have (on average 10.777777777777779) internal successors, (194), 18 states have internal predecessors, (194), 0 states have call successors, (0), 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 21:01:06,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:01:06,669 INFO L93 Difference]: Finished difference Result 6380 states and 9149 transitions. [2022-11-02 21:01:06,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 21:01:06,670 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 10.777777777777779) internal successors, (194), 18 states have internal predecessors, (194), 0 states have call successors, (0), 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 98 [2022-11-02 21:01:06,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:01:06,689 INFO L225 Difference]: With dead ends: 6380 [2022-11-02 21:01:06,689 INFO L226 Difference]: Without dead ends: 6378 [2022-11-02 21:01:06,693 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=83, Invalid=257, Unknown=2, NotChecked=0, Total=342 [2022-11-02 21:01:06,694 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 338 mSDsluCounter, 1123 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 338 SdHoareTripleChecker+Valid, 1248 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 24 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:01:06,694 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [338 Valid, 1248 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 24 Unchecked, 0.0s Time] [2022-11-02 21:01:06,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6378 states. [2022-11-02 21:01:06,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6378 to 6033. [2022-11-02 21:01:06,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6033 states, 6032 states have (on average 1.4350132625994696) internal successors, (8656), 6032 states have internal predecessors, (8656), 0 states have call successors, (0), 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 21:01:06,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6033 states to 6033 states and 8656 transitions. [2022-11-02 21:01:06,836 INFO L78 Accepts]: Start accepts. Automaton has 6033 states and 8656 transitions. Word has length 98 [2022-11-02 21:01:06,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:01:06,837 INFO L495 AbstractCegarLoop]: Abstraction has 6033 states and 8656 transitions. [2022-11-02 21:01:06,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 10.777777777777779) internal successors, (194), 18 states have internal predecessors, (194), 0 states have call successors, (0), 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 21:01:06,837 INFO L276 IsEmpty]: Start isEmpty. Operand 6033 states and 8656 transitions. [2022-11-02 21:01:06,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-02 21:01:06,847 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:01:06,847 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] [2022-11-02 21:01:06,870 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-11-02 21:01:07,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:01:07,062 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:01:07,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:07,063 INFO L85 PathProgramCache]: Analyzing trace with hash 1046650225, now seen corresponding path program 1 times [2022-11-02 21:01:07,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:01:07,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1538983699] [2022-11-02 21:01:07,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:07,064 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:01:07,064 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:01:07,065 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:01:07,076 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-11-02 21:01:07,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:07,701 INFO L263 TraceCheckSpWp]: Trace formula consists of 1393 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 21:01:07,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:01:07,845 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 21:01:07,845 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:01:07,845 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:01:07,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1538983699] [2022-11-02 21:01:07,846 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1538983699] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:01:07,846 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:01:07,846 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:01:07,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134038257] [2022-11-02 21:01:07,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:01:07,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:01:07,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:01:07,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:01:07,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:01:07,848 INFO L87 Difference]: Start difference. First operand 6033 states and 8656 transitions. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 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 21:01:08,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:01:08,204 INFO L93 Difference]: Finished difference Result 15959 states and 22841 transitions. [2022-11-02 21:01:08,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 21:01:08,206 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 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 98 [2022-11-02 21:01:08,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:01:08,236 INFO L225 Difference]: With dead ends: 15959 [2022-11-02 21:01:08,236 INFO L226 Difference]: Without dead ends: 12432 [2022-11-02 21:01:08,242 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-02 21:01:08,243 INFO L413 NwaCegarLoop]: 353 mSDtfsCounter, 352 mSDsluCounter, 899 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 1252 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 20 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:01:08,243 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [352 Valid, 1252 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 20 Unchecked, 0.2s Time] [2022-11-02 21:01:08,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12432 states. [2022-11-02 21:01:08,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12432 to 6189. [2022-11-02 21:01:08,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6189 states, 6188 states have (on average 1.4301874595992243) internal successors, (8850), 6188 states have internal predecessors, (8850), 0 states have call successors, (0), 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 21:01:08,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6189 states to 6189 states and 8850 transitions. [2022-11-02 21:01:08,407 INFO L78 Accepts]: Start accepts. Automaton has 6189 states and 8850 transitions. Word has length 98 [2022-11-02 21:01:08,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:01:08,407 INFO L495 AbstractCegarLoop]: Abstraction has 6189 states and 8850 transitions. [2022-11-02 21:01:08,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 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 21:01:08,407 INFO L276 IsEmpty]: Start isEmpty. Operand 6189 states and 8850 transitions. [2022-11-02 21:01:08,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-02 21:01:08,416 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:01:08,416 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] [2022-11-02 21:01:08,443 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-11-02 21:01:08,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:01:08,629 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:01:08,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:08,630 INFO L85 PathProgramCache]: Analyzing trace with hash -1286742413, now seen corresponding path program 1 times [2022-11-02 21:01:08,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:01:08,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [522920116] [2022-11-02 21:01:08,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:08,631 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:01:08,631 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:01:08,632 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:01:08,634 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-11-02 21:01:09,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:09,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 1393 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 21:01:09,251 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:01:09,424 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 21:01:09,425 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:01:09,425 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:01:09,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [522920116] [2022-11-02 21:01:09,425 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [522920116] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:01:09,425 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:01:09,426 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:01:09,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765472449] [2022-11-02 21:01:09,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:01:09,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:01:09,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:01:09,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:01:09,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:01:09,427 INFO L87 Difference]: Start difference. First operand 6189 states and 8850 transitions. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 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 21:01:09,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:01:09,732 INFO L93 Difference]: Finished difference Result 10795 states and 15389 transitions. [2022-11-02 21:01:09,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 21:01:09,733 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 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 98 [2022-11-02 21:01:09,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:01:09,746 INFO L225 Difference]: With dead ends: 10795 [2022-11-02 21:01:09,747 INFO L226 Difference]: Without dead ends: 9592 [2022-11-02 21:01:09,750 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-02 21:01:09,751 INFO L413 NwaCegarLoop]: 310 mSDtfsCounter, 216 mSDsluCounter, 1202 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 1512 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 29 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:01:09,751 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 1512 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 29 Unchecked, 0.2s Time] [2022-11-02 21:01:09,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9592 states. [2022-11-02 21:01:09,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9592 to 7601. [2022-11-02 21:01:09,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7601 states, 7600 states have (on average 1.4213157894736843) internal successors, (10802), 7600 states have internal predecessors, (10802), 0 states have call successors, (0), 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 21:01:09,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7601 states to 7601 states and 10802 transitions. [2022-11-02 21:01:09,910 INFO L78 Accepts]: Start accepts. Automaton has 7601 states and 10802 transitions. Word has length 98 [2022-11-02 21:01:09,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:01:09,910 INFO L495 AbstractCegarLoop]: Abstraction has 7601 states and 10802 transitions. [2022-11-02 21:01:09,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 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 21:01:09,911 INFO L276 IsEmpty]: Start isEmpty. Operand 7601 states and 10802 transitions. [2022-11-02 21:01:09,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-02 21:01:09,923 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:01:09,923 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] [2022-11-02 21:01:09,946 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-11-02 21:01:10,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:01:10,139 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:01:10,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:10,139 INFO L85 PathProgramCache]: Analyzing trace with hash -1359128971, now seen corresponding path program 1 times [2022-11-02 21:01:10,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:01:10,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1645701231] [2022-11-02 21:01:10,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:10,140 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:01:10,140 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:01:10,141 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:01:10,142 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-11-02 21:01:10,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:10,738 INFO L263 TraceCheckSpWp]: Trace formula consists of 1393 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 21:01:10,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:01:10,947 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 21:01:10,947 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:01:10,947 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:01:10,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1645701231] [2022-11-02 21:01:10,948 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1645701231] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:01:10,948 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:01:10,948 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:01:10,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243749168] [2022-11-02 21:01:10,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:01:10,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:01:10,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:01:10,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:01:10,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:01:10,950 INFO L87 Difference]: Start difference. First operand 7601 states and 10802 transitions. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 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 21:01:11,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:01:11,237 INFO L93 Difference]: Finished difference Result 9915 states and 14128 transitions. [2022-11-02 21:01:11,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 21:01:11,239 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 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 98 [2022-11-02 21:01:11,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:01:11,254 INFO L225 Difference]: With dead ends: 9915 [2022-11-02 21:01:11,254 INFO L226 Difference]: Without dead ends: 9024 [2022-11-02 21:01:11,257 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-02 21:01:11,258 INFO L413 NwaCegarLoop]: 294 mSDtfsCounter, 200 mSDsluCounter, 1156 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 1450 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 26 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:01:11,259 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [200 Valid, 1450 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 26 Unchecked, 0.2s Time] [2022-11-02 21:01:11,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9024 states. [2022-11-02 21:01:11,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9024 to 7901. [2022-11-02 21:01:11,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7901 states, 7900 states have (on average 1.4162025316455695) internal successors, (11188), 7900 states have internal predecessors, (11188), 0 states have call successors, (0), 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 21:01:11,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7901 states to 7901 states and 11188 transitions. [2022-11-02 21:01:11,486 INFO L78 Accepts]: Start accepts. Automaton has 7901 states and 11188 transitions. Word has length 98 [2022-11-02 21:01:11,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:01:11,486 INFO L495 AbstractCegarLoop]: Abstraction has 7901 states and 11188 transitions. [2022-11-02 21:01:11,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 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 21:01:11,487 INFO L276 IsEmpty]: Start isEmpty. Operand 7901 states and 11188 transitions. [2022-11-02 21:01:11,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-02 21:01:11,502 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:01:11,503 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] [2022-11-02 21:01:11,525 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-11-02 21:01:11,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:01:11,717 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:01:11,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:11,718 INFO L85 PathProgramCache]: Analyzing trace with hash 1130399991, now seen corresponding path program 1 times [2022-11-02 21:01:11,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:01:11,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1101764870] [2022-11-02 21:01:11,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:11,720 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:01:11,720 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:01:11,722 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:01:11,732 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-11-02 21:01:12,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:12,365 INFO L263 TraceCheckSpWp]: Trace formula consists of 1393 conjuncts, 38 conjunts are in the unsatisfiable core [2022-11-02 21:01:12,371 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:01:13,331 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 21:01:13,332 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:01:21,094 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 21:01:21,095 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:01:21,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1101764870] [2022-11-02 21:01:21,095 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1101764870] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:01:21,095 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:01:21,095 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2022-11-02 21:01:21,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332177742] [2022-11-02 21:01:21,096 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:01:21,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-02 21:01:21,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:01:21,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-02 21:01:21,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=135, Unknown=3, NotChecked=0, Total=182 [2022-11-02 21:01:21,101 INFO L87 Difference]: Start difference. First operand 7901 states and 11188 transitions. Second operand has 14 states, 14 states have (on average 13.857142857142858) internal successors, (194), 14 states have internal predecessors, (194), 0 states have call successors, (0), 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 21:01:21,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:01:21,196 INFO L93 Difference]: Finished difference Result 9750 states and 13927 transitions. [2022-11-02 21:01:21,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 21:01:21,197 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 13.857142857142858) internal successors, (194), 14 states have internal predecessors, (194), 0 states have call successors, (0), 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 98 [2022-11-02 21:01:21,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:01:21,211 INFO L225 Difference]: With dead ends: 9750 [2022-11-02 21:01:21,211 INFO L226 Difference]: Without dead ends: 9748 [2022-11-02 21:01:21,214 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=44, Invalid=135, Unknown=3, NotChecked=0, Total=182 [2022-11-02 21:01:21,214 INFO L413 NwaCegarLoop]: 272 mSDtfsCounter, 502 mSDsluCounter, 1656 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 502 SdHoareTripleChecker+Valid, 1928 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 34 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:01:21,215 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [502 Valid, 1928 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 34 Unchecked, 0.0s Time] [2022-11-02 21:01:21,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9748 states. [2022-11-02 21:01:21,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9748 to 7931. [2022-11-02 21:01:21,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7931 states, 7930 states have (on average 1.4165195460277427) internal successors, (11233), 7930 states have internal predecessors, (11233), 0 states have call successors, (0), 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 21:01:21,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7931 states to 7931 states and 11233 transitions. [2022-11-02 21:01:21,356 INFO L78 Accepts]: Start accepts. Automaton has 7931 states and 11233 transitions. Word has length 98 [2022-11-02 21:01:21,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:01:21,357 INFO L495 AbstractCegarLoop]: Abstraction has 7931 states and 11233 transitions. [2022-11-02 21:01:21,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 13.857142857142858) internal successors, (194), 14 states have internal predecessors, (194), 0 states have call successors, (0), 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 21:01:21,357 INFO L276 IsEmpty]: Start isEmpty. Operand 7931 states and 11233 transitions. [2022-11-02 21:01:21,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-02 21:01:21,369 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:01:21,369 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] [2022-11-02 21:01:21,394 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-11-02 21:01:21,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:01:21,582 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:01:21,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:21,583 INFO L85 PathProgramCache]: Analyzing trace with hash 1810458361, now seen corresponding path program 1 times [2022-11-02 21:01:21,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:01:21,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1342868793] [2022-11-02 21:01:21,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:21,584 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:01:21,584 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:01:21,585 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:01:21,588 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-11-02 21:01:22,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:22,187 INFO L263 TraceCheckSpWp]: Trace formula consists of 1393 conjuncts, 44 conjunts are in the unsatisfiable core [2022-11-02 21:01:22,190 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:01:23,649 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:01:23,649 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:01:33,768 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 21:01:33,768 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:01:33,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1342868793] [2022-11-02 21:01:33,768 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1342868793] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:01:33,768 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:01:33,768 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2022-11-02 21:01:33,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051669520] [2022-11-02 21:01:33,769 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:01:33,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 21:01:33,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:01:33,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 21:01:33,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=228, Unknown=3, NotChecked=0, Total=306 [2022-11-02 21:01:33,770 INFO L87 Difference]: Start difference. First operand 7931 states and 11233 transitions. Second operand has 18 states, 18 states have (on average 10.777777777777779) internal successors, (194), 18 states have internal predecessors, (194), 0 states have call successors, (0), 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 21:01:33,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:01:33,975 INFO L93 Difference]: Finished difference Result 10408 states and 14767 transitions. [2022-11-02 21:01:33,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 21:01:33,976 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 10.777777777777779) internal successors, (194), 18 states have internal predecessors, (194), 0 states have call successors, (0), 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 98 [2022-11-02 21:01:33,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:01:33,988 INFO L225 Difference]: With dead ends: 10408 [2022-11-02 21:01:33,989 INFO L226 Difference]: Without dead ends: 10406 [2022-11-02 21:01:33,992 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 9.0s TimeCoverageRelationStatistics Valid=85, Invalid=254, Unknown=3, NotChecked=0, Total=342 [2022-11-02 21:01:33,993 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 381 mSDsluCounter, 1540 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 381 SdHoareTripleChecker+Valid, 1670 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 27 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:01:33,994 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [381 Valid, 1670 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 27 Unchecked, 0.0s Time] [2022-11-02 21:01:34,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10406 states. [2022-11-02 21:01:34,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10406 to 10095. [2022-11-02 21:01:34,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10095 states, 10094 states have (on average 1.4192589657222112) internal successors, (14326), 10094 states have internal predecessors, (14326), 0 states have call successors, (0), 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 21:01:34,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10095 states to 10095 states and 14326 transitions. [2022-11-02 21:01:34,237 INFO L78 Accepts]: Start accepts. Automaton has 10095 states and 14326 transitions. Word has length 98 [2022-11-02 21:01:34,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:01:34,237 INFO L495 AbstractCegarLoop]: Abstraction has 10095 states and 14326 transitions. [2022-11-02 21:01:34,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 10.777777777777779) internal successors, (194), 18 states have internal predecessors, (194), 0 states have call successors, (0), 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 21:01:34,237 INFO L276 IsEmpty]: Start isEmpty. Operand 10095 states and 14326 transitions. [2022-11-02 21:01:34,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-02 21:01:34,250 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:01:34,250 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] [2022-11-02 21:01:34,273 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-11-02 21:01:34,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:01:34,473 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:01:34,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:34,473 INFO L85 PathProgramCache]: Analyzing trace with hash -1524021001, now seen corresponding path program 1 times [2022-11-02 21:01:34,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:01:34,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [564874679] [2022-11-02 21:01:34,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:34,475 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:01:34,475 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:01:34,476 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:01:34,499 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-11-02 21:01:35,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:35,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 1393 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 21:01:35,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:01:35,260 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 21:01:35,260 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:01:35,260 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:01:35,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [564874679] [2022-11-02 21:01:35,261 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [564874679] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:01:35,261 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:01:35,261 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:01:35,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698761918] [2022-11-02 21:01:35,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:01:35,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:01:35,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:01:35,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:01:35,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:01:35,262 INFO L87 Difference]: Start difference. First operand 10095 states and 14326 transitions. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 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 21:01:35,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:01:35,596 INFO L93 Difference]: Finished difference Result 21837 states and 30878 transitions. [2022-11-02 21:01:35,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 21:01:35,597 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 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 98 [2022-11-02 21:01:35,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:01:35,610 INFO L225 Difference]: With dead ends: 21837 [2022-11-02 21:01:35,611 INFO L226 Difference]: Without dead ends: 17392 [2022-11-02 21:01:35,618 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-02 21:01:35,619 INFO L413 NwaCegarLoop]: 344 mSDtfsCounter, 258 mSDsluCounter, 1102 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 1446 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 20 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:01:35,619 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [258 Valid, 1446 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 20 Unchecked, 0.2s Time] [2022-11-02 21:01:35,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17392 states. [2022-11-02 21:01:35,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17392 to 10095. [2022-11-02 21:01:35,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10095 states, 10094 states have (on average 1.4129185654844463) internal successors, (14262), 10094 states have internal predecessors, (14262), 0 states have call successors, (0), 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 21:01:35,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10095 states to 10095 states and 14262 transitions. [2022-11-02 21:01:35,856 INFO L78 Accepts]: Start accepts. Automaton has 10095 states and 14262 transitions. Word has length 98 [2022-11-02 21:01:35,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:01:35,856 INFO L495 AbstractCegarLoop]: Abstraction has 10095 states and 14262 transitions. [2022-11-02 21:01:35,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 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 21:01:35,857 INFO L276 IsEmpty]: Start isEmpty. Operand 10095 states and 14262 transitions. [2022-11-02 21:01:35,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-02 21:01:35,868 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:01:35,869 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] [2022-11-02 21:01:35,899 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-11-02 21:01:36,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:01:36,088 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:01:36,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:36,088 INFO L85 PathProgramCache]: Analyzing trace with hash -137235591, now seen corresponding path program 1 times [2022-11-02 21:01:36,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:01:36,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [498163664] [2022-11-02 21:01:36,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:36,090 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:01:36,090 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:01:36,091 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:01:36,132 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-11-02 21:01:36,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:36,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 1393 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 21:01:36,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:01:36,957 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 21:01:36,957 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:01:36,957 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:01:36,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [498163664] [2022-11-02 21:01:36,958 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [498163664] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:01:36,958 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:01:36,958 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:01:36,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903029908] [2022-11-02 21:01:36,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:01:36,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:01:36,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:01:36,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:01:36,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:01:36,959 INFO L87 Difference]: Start difference. First operand 10095 states and 14262 transitions. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 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 21:01:37,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:01:37,340 INFO L93 Difference]: Finished difference Result 14741 states and 20866 transitions. [2022-11-02 21:01:37,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 21:01:37,345 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 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 98 [2022-11-02 21:01:37,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:01:37,353 INFO L225 Difference]: With dead ends: 14741 [2022-11-02 21:01:37,353 INFO L226 Difference]: Without dead ends: 13630 [2022-11-02 21:01:37,355 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-02 21:01:37,356 INFO L413 NwaCegarLoop]: 304 mSDtfsCounter, 217 mSDsluCounter, 1022 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 1326 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 14 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:01:37,356 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [217 Valid, 1326 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 14 Unchecked, 0.2s Time] [2022-11-02 21:01:37,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13630 states. [2022-11-02 21:01:37,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13630 to 11119. [2022-11-02 21:01:37,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11119 states, 11118 states have (on average 1.4052887209929843) internal successors, (15624), 11118 states have internal predecessors, (15624), 0 states have call successors, (0), 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 21:01:37,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11119 states to 11119 states and 15624 transitions. [2022-11-02 21:01:37,568 INFO L78 Accepts]: Start accepts. Automaton has 11119 states and 15624 transitions. Word has length 98 [2022-11-02 21:01:37,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:01:37,569 INFO L495 AbstractCegarLoop]: Abstraction has 11119 states and 15624 transitions. [2022-11-02 21:01:37,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 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 21:01:37,569 INFO L276 IsEmpty]: Start isEmpty. Operand 11119 states and 15624 transitions. [2022-11-02 21:01:37,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-02 21:01:37,584 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:01:37,584 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] [2022-11-02 21:01:37,608 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2022-11-02 21:01:37,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:01:37,806 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:01:37,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:37,807 INFO L85 PathProgramCache]: Analyzing trace with hash 1248967803, now seen corresponding path program 1 times [2022-11-02 21:01:37,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:01:37,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [932884982] [2022-11-02 21:01:37,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:37,808 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:01:37,808 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:01:37,809 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:01:37,812 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-11-02 21:01:38,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:38,412 INFO L263 TraceCheckSpWp]: Trace formula consists of 1393 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 21:01:38,415 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:01:38,614 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 21:01:38,614 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:01:38,614 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:01:38,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [932884982] [2022-11-02 21:01:38,614 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [932884982] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:01:38,614 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:01:38,615 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:01:38,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724653652] [2022-11-02 21:01:38,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:01:38,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:01:38,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:01:38,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:01:38,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:01:38,616 INFO L87 Difference]: Start difference. First operand 11119 states and 15624 transitions. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 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 21:01:38,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:01:38,910 INFO L93 Difference]: Finished difference Result 13850 states and 19574 transitions. [2022-11-02 21:01:38,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 21:01:38,911 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 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 98 [2022-11-02 21:01:38,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:01:38,924 INFO L225 Difference]: With dead ends: 13850 [2022-11-02 21:01:38,924 INFO L226 Difference]: Without dead ends: 12981 [2022-11-02 21:01:38,929 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-02 21:01:38,929 INFO L413 NwaCegarLoop]: 290 mSDtfsCounter, 252 mSDsluCounter, 996 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 252 SdHoareTripleChecker+Valid, 1286 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 24 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:01:38,930 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [252 Valid, 1286 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 24 Unchecked, 0.2s Time] [2022-11-02 21:01:38,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12981 states. [2022-11-02 21:01:39,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12981 to 11297. [2022-11-02 21:01:39,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11297 states, 11296 states have (on average 1.4042138810198301) internal successors, (15862), 11296 states have internal predecessors, (15862), 0 states have call successors, (0), 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 21:01:39,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11297 states to 11297 states and 15862 transitions. [2022-11-02 21:01:39,219 INFO L78 Accepts]: Start accepts. Automaton has 11297 states and 15862 transitions. Word has length 98 [2022-11-02 21:01:39,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:01:39,220 INFO L495 AbstractCegarLoop]: Abstraction has 11297 states and 15862 transitions. [2022-11-02 21:01:39,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 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 21:01:39,220 INFO L276 IsEmpty]: Start isEmpty. Operand 11297 states and 15862 transitions. [2022-11-02 21:01:39,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-02 21:01:39,233 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:01:39,233 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] [2022-11-02 21:01:39,265 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2022-11-02 21:01:39,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:01:39,447 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:01:39,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:39,448 INFO L85 PathProgramCache]: Analyzing trace with hash 1671669629, now seen corresponding path program 1 times [2022-11-02 21:01:39,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:01:39,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1826509754] [2022-11-02 21:01:39,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:39,449 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:01:39,450 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:01:39,451 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:01:39,474 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-11-02 21:01:40,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:40,125 INFO L263 TraceCheckSpWp]: Trace formula consists of 1393 conjuncts, 44 conjunts are in the unsatisfiable core [2022-11-02 21:01:40,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:01:41,720 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:01:41,721 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:01:44,373 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 21:01:44,373 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:01:44,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1826509754] [2022-11-02 21:01:44,374 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1826509754] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:01:44,374 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:01:44,374 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2022-11-02 21:01:44,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459781953] [2022-11-02 21:01:44,374 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:01:44,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 21:01:44,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:01:44,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 21:01:44,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2022-11-02 21:01:44,376 INFO L87 Difference]: Start difference. First operand 11297 states and 15862 transitions. Second operand has 18 states, 18 states have (on average 10.777777777777779) internal successors, (194), 18 states have internal predecessors, (194), 0 states have call successors, (0), 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 21:01:44,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:01:44,668 INFO L93 Difference]: Finished difference Result 12532 states and 17605 transitions. [2022-11-02 21:01:44,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 21:01:44,669 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 10.777777777777779) internal successors, (194), 18 states have internal predecessors, (194), 0 states have call successors, (0), 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 98 [2022-11-02 21:01:44,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:01:44,675 INFO L225 Difference]: With dead ends: 12532 [2022-11-02 21:01:44,676 INFO L226 Difference]: Without dead ends: 12530 [2022-11-02 21:01:44,677 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2022-11-02 21:01:44,677 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 380 mSDsluCounter, 1500 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 380 SdHoareTripleChecker+Valid, 1663 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 41 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:01:44,678 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [380 Valid, 1663 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 41 Unchecked, 0.0s Time] [2022-11-02 21:01:44,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12530 states. [2022-11-02 21:01:44,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12530 to 12219. [2022-11-02 21:01:44,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12219 states, 12218 states have (on average 1.4056310361761335) internal successors, (17174), 12218 states have internal predecessors, (17174), 0 states have call successors, (0), 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 21:01:44,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12219 states to 12219 states and 17174 transitions. [2022-11-02 21:01:44,899 INFO L78 Accepts]: Start accepts. Automaton has 12219 states and 17174 transitions. Word has length 98 [2022-11-02 21:01:44,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:01:44,899 INFO L495 AbstractCegarLoop]: Abstraction has 12219 states and 17174 transitions. [2022-11-02 21:01:44,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 10.777777777777779) internal successors, (194), 18 states have internal predecessors, (194), 0 states have call successors, (0), 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 21:01:44,900 INFO L276 IsEmpty]: Start isEmpty. Operand 12219 states and 17174 transitions. [2022-11-02 21:01:44,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-02 21:01:44,911 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:01:44,912 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] [2022-11-02 21:01:44,943 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2022-11-02 21:01:45,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:01:45,126 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:01:45,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:45,127 INFO L85 PathProgramCache]: Analyzing trace with hash -256168959, now seen corresponding path program 1 times [2022-11-02 21:01:45,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:01:45,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [134434019] [2022-11-02 21:01:45,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:45,128 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:01:45,128 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:01:45,129 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:01:45,130 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-11-02 21:01:45,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:45,736 INFO L263 TraceCheckSpWp]: Trace formula consists of 1393 conjuncts, 30 conjunts are in the unsatisfiable core [2022-11-02 21:01:45,740 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:01:47,159 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:01:47,160 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:01:51,007 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 21:01:51,007 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:01:51,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [134434019] [2022-11-02 21:01:51,008 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [134434019] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:01:51,008 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:01:51,008 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2022-11-02 21:01:51,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530102296] [2022-11-02 21:01:51,008 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:01:51,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 21:01:51,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:01:51,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 21:01:51,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=230, Unknown=1, NotChecked=0, Total=306 [2022-11-02 21:01:51,010 INFO L87 Difference]: Start difference. First operand 12219 states and 17174 transitions. Second operand has 18 states, 18 states have (on average 10.777777777777779) internal successors, (194), 18 states have internal predecessors, (194), 0 states have call successors, (0), 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 21:01:51,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:01:51,257 INFO L93 Difference]: Finished difference Result 24424 states and 34330 transitions. [2022-11-02 21:01:51,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 21:01:51,257 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 10.777777777777779) internal successors, (194), 18 states have internal predecessors, (194), 0 states have call successors, (0), 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 98 [2022-11-02 21:01:51,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:01:51,273 INFO L225 Difference]: With dead ends: 24424 [2022-11-02 21:01:51,273 INFO L226 Difference]: Without dead ends: 24422 [2022-11-02 21:01:51,278 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=85, Invalid=256, Unknown=1, NotChecked=0, Total=342 [2022-11-02 21:01:51,278 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 512 mSDsluCounter, 1374 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 512 SdHoareTripleChecker+Valid, 1500 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 36 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:01:51,279 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [512 Valid, 1500 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 36 Unchecked, 0.0s Time] [2022-11-02 21:01:51,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24422 states. [2022-11-02 21:01:51,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24422 to 22991. [2022-11-02 21:01:51,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22991 states, 22990 states have (on average 1.406785558938669) internal successors, (32342), 22990 states have internal predecessors, (32342), 0 states have call successors, (0), 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 21:01:51,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22991 states to 22991 states and 32342 transitions. [2022-11-02 21:01:51,696 INFO L78 Accepts]: Start accepts. Automaton has 22991 states and 32342 transitions. Word has length 98 [2022-11-02 21:01:51,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:01:51,697 INFO L495 AbstractCegarLoop]: Abstraction has 22991 states and 32342 transitions. [2022-11-02 21:01:51,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 10.777777777777779) internal successors, (194), 18 states have internal predecessors, (194), 0 states have call successors, (0), 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 21:01:51,697 INFO L276 IsEmpty]: Start isEmpty. Operand 22991 states and 32342 transitions. [2022-11-02 21:01:51,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-02 21:01:51,722 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:01:51,722 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] [2022-11-02 21:01:51,752 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2022-11-02 21:01:51,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:01:51,938 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:01:51,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:51,939 INFO L85 PathProgramCache]: Analyzing trace with hash -842445181, now seen corresponding path program 1 times [2022-11-02 21:01:51,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:01:51,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1837251183] [2022-11-02 21:01:51,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:51,940 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:01:51,940 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:01:51,941 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:01:51,942 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-11-02 21:01:52,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:52,537 INFO L263 TraceCheckSpWp]: Trace formula consists of 1393 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 21:01:52,541 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:01:52,620 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 21:01:52,621 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:01:52,621 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:01:52,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1837251183] [2022-11-02 21:01:52,621 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1837251183] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:01:52,621 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:01:52,621 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:01:52,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608864056] [2022-11-02 21:01:52,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:01:52,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:01:52,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:01:52,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:01:52,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:01:52,623 INFO L87 Difference]: Start difference. First operand 22991 states and 32342 transitions. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 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 21:01:53,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:01:53,070 INFO L93 Difference]: Finished difference Result 57633 states and 80976 transitions. [2022-11-02 21:01:53,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:01:53,072 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 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 98 [2022-11-02 21:01:53,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:01:53,103 INFO L225 Difference]: With dead ends: 57633 [2022-11-02 21:01:53,103 INFO L226 Difference]: Without dead ends: 45444 [2022-11-02 21:01:53,117 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:01:53,118 INFO L413 NwaCegarLoop]: 270 mSDtfsCounter, 150 mSDsluCounter, 920 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 1190 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 21 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:01:53,118 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 1190 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 21 Unchecked, 0.1s Time] [2022-11-02 21:01:53,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45444 states. [2022-11-02 21:01:53,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45444 to 23003. [2022-11-02 21:01:53,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23003 states, 23002 states have (on average 1.4067472393704896) internal successors, (32358), 23002 states have internal predecessors, (32358), 0 states have call successors, (0), 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 21:01:53,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23003 states to 23003 states and 32358 transitions. [2022-11-02 21:01:53,612 INFO L78 Accepts]: Start accepts. Automaton has 23003 states and 32358 transitions. Word has length 98 [2022-11-02 21:01:53,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:01:53,612 INFO L495 AbstractCegarLoop]: Abstraction has 23003 states and 32358 transitions. [2022-11-02 21:01:53,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 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 21:01:53,612 INFO L276 IsEmpty]: Start isEmpty. Operand 23003 states and 32358 transitions. [2022-11-02 21:01:53,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-02 21:01:53,634 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:01:53,634 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] [2022-11-02 21:01:53,660 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2022-11-02 21:01:53,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:01:53,852 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:01:53,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:53,853 INFO L85 PathProgramCache]: Analyzing trace with hash -1900283259, now seen corresponding path program 1 times [2022-11-02 21:01:53,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:01:53,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1934676253] [2022-11-02 21:01:53,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:53,854 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:01:53,854 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:01:53,855 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:01:53,858 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2022-11-02 21:01:54,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:54,524 INFO L263 TraceCheckSpWp]: Trace formula consists of 1393 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 21:01:54,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:01:54,654 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 21:01:54,654 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:01:54,654 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:01:54,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1934676253] [2022-11-02 21:01:54,654 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1934676253] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:01:54,655 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:01:54,655 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:01:54,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409783080] [2022-11-02 21:01:54,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:01:54,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:01:54,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:01:54,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:01:54,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:01:54,657 INFO L87 Difference]: Start difference. First operand 23003 states and 32358 transitions. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 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 21:01:55,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:01:55,344 INFO L93 Difference]: Finished difference Result 58081 states and 81302 transitions. [2022-11-02 21:01:55,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 21:01:55,345 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 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 98 [2022-11-02 21:01:55,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:01:55,381 INFO L225 Difference]: With dead ends: 58081 [2022-11-02 21:01:55,382 INFO L226 Difference]: Without dead ends: 46148 [2022-11-02 21:01:55,393 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-02 21:01:55,393 INFO L413 NwaCegarLoop]: 292 mSDtfsCounter, 207 mSDsluCounter, 745 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 1037 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 17 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:01:55,394 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [207 Valid, 1037 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 17 Unchecked, 0.1s Time] [2022-11-02 21:01:55,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46148 states. [2022-11-02 21:01:55,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46148 to 23259. [2022-11-02 21:01:55,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23259 states, 23258 states have (on average 1.4050219279387737) internal successors, (32678), 23258 states have internal predecessors, (32678), 0 states have call successors, (0), 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 21:01:55,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23259 states to 23259 states and 32678 transitions. [2022-11-02 21:01:55,864 INFO L78 Accepts]: Start accepts. Automaton has 23259 states and 32678 transitions. Word has length 98 [2022-11-02 21:01:55,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:01:55,864 INFO L495 AbstractCegarLoop]: Abstraction has 23259 states and 32678 transitions. [2022-11-02 21:01:55,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 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 21:01:55,865 INFO L276 IsEmpty]: Start isEmpty. Operand 23259 states and 32678 transitions. [2022-11-02 21:01:55,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-02 21:01:55,893 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:01:55,893 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] [2022-11-02 21:01:55,919 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2022-11-02 21:01:56,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:01:56,106 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:01:56,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:56,107 INFO L85 PathProgramCache]: Analyzing trace with hash 1178530311, now seen corresponding path program 1 times [2022-11-02 21:01:56,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:01:56,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [987600952] [2022-11-02 21:01:56,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:56,108 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:01:56,109 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:01:56,110 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:01:56,112 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2022-11-02 21:01:56,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:56,744 INFO L263 TraceCheckSpWp]: Trace formula consists of 1393 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 21:01:56,747 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:01:56,901 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 21:01:56,901 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:01:56,902 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:01:56,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [987600952] [2022-11-02 21:01:56,902 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [987600952] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:01:56,902 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:01:56,902 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:01:56,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851684563] [2022-11-02 21:01:56,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:01:56,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:01:56,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:01:56,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:01:56,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:01:56,904 INFO L87 Difference]: Start difference. First operand 23259 states and 32678 transitions. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 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 21:01:57,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:01:57,723 INFO L93 Difference]: Finished difference Result 57629 states and 80540 transitions. [2022-11-02 21:01:57,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 21:01:57,724 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 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 98 [2022-11-02 21:01:57,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:01:57,754 INFO L225 Difference]: With dead ends: 57629 [2022-11-02 21:01:57,754 INFO L226 Difference]: Without dead ends: 47840 [2022-11-02 21:01:57,762 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-02 21:01:57,762 INFO L413 NwaCegarLoop]: 330 mSDtfsCounter, 215 mSDsluCounter, 1231 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 1561 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 41 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 21:01:57,763 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 1561 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 43 Invalid, 0 Unknown, 41 Unchecked, 0.3s Time] [2022-11-02 21:01:57,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47840 states. [2022-11-02 21:01:58,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47840 to 25403. [2022-11-02 21:01:58,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25403 states, 25402 states have (on average 1.3960318085190142) internal successors, (35462), 25402 states have internal predecessors, (35462), 0 states have call successors, (0), 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 21:01:58,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25403 states to 25403 states and 35462 transitions. [2022-11-02 21:01:58,171 INFO L78 Accepts]: Start accepts. Automaton has 25403 states and 35462 transitions. Word has length 98 [2022-11-02 21:01:58,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:01:58,171 INFO L495 AbstractCegarLoop]: Abstraction has 25403 states and 35462 transitions. [2022-11-02 21:01:58,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 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 21:01:58,171 INFO L276 IsEmpty]: Start isEmpty. Operand 25403 states and 35462 transitions. [2022-11-02 21:01:58,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-02 21:01:58,204 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:01:58,204 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] [2022-11-02 21:01:58,222 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2022-11-02 21:01:58,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:01:58,405 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:01:58,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:58,405 INFO L85 PathProgramCache]: Analyzing trace with hash 1163011593, now seen corresponding path program 1 times [2022-11-02 21:01:58,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:01:58,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1671668254] [2022-11-02 21:01:58,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:58,406 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:01:58,406 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:01:58,407 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:01:58,408 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2022-11-02 21:01:59,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:59,049 INFO L263 TraceCheckSpWp]: Trace formula consists of 1393 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 21:01:59,052 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:01:59,228 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 21:01:59,228 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:01:59,229 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:01:59,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1671668254] [2022-11-02 21:01:59,229 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1671668254] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:01:59,229 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:01:59,229 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:01:59,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781502460] [2022-11-02 21:01:59,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:01:59,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:01:59,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:01:59,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:01:59,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:01:59,231 INFO L87 Difference]: Start difference. First operand 25403 states and 35462 transitions. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 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 21:02:00,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:02:00,005 INFO L93 Difference]: Finished difference Result 48441 states and 66822 transitions. [2022-11-02 21:02:00,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 21:02:00,006 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 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 98 [2022-11-02 21:02:00,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:02:00,034 INFO L225 Difference]: With dead ends: 48441 [2022-11-02 21:02:00,034 INFO L226 Difference]: Without dead ends: 41662 [2022-11-02 21:02:00,041 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-02 21:02:00,042 INFO L413 NwaCegarLoop]: 311 mSDtfsCounter, 193 mSDsluCounter, 1176 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 1487 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 34 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:02:00,042 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [193 Valid, 1487 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 43 Invalid, 0 Unknown, 34 Unchecked, 0.2s Time] [2022-11-02 21:02:00,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41662 states. [2022-11-02 21:02:00,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41662 to 28419. [2022-11-02 21:02:00,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28419 states, 28418 states have (on average 1.385811809416567) internal successors, (39382), 28418 states have internal predecessors, (39382), 0 states have call successors, (0), 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 21:02:00,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28419 states to 28419 states and 39382 transitions. [2022-11-02 21:02:00,461 INFO L78 Accepts]: Start accepts. Automaton has 28419 states and 39382 transitions. Word has length 98 [2022-11-02 21:02:00,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:02:00,461 INFO L495 AbstractCegarLoop]: Abstraction has 28419 states and 39382 transitions. [2022-11-02 21:02:00,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 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 21:02:00,461 INFO L276 IsEmpty]: Start isEmpty. Operand 28419 states and 39382 transitions. [2022-11-02 21:02:00,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-02 21:02:00,478 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:02:00,479 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] [2022-11-02 21:02:00,507 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2022-11-02 21:02:00,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:02:00,679 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:02:00,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:02:00,680 INFO L85 PathProgramCache]: Analyzing trace with hash 1822543115, now seen corresponding path program 1 times [2022-11-02 21:02:00,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:02:00,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [925322463] [2022-11-02 21:02:00,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:02:00,681 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:02:00,681 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:02:00,682 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:02:00,683 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2022-11-02 21:02:01,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:01,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 1393 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 21:02:01,327 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:02:01,526 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 21:02:01,526 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:02:01,526 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:02:01,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [925322463] [2022-11-02 21:02:01,526 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [925322463] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:02:01,526 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:02:01,526 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:02:01,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54942082] [2022-11-02 21:02:01,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:02:01,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:02:01,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:02:01,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:02:01,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:02:01,527 INFO L87 Difference]: Start difference. First operand 28419 states and 39382 transitions. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 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 21:02:02,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:02:02,079 INFO L93 Difference]: Finished difference Result 38072 states and 52757 transitions. [2022-11-02 21:02:02,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 21:02:02,080 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 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 98 [2022-11-02 21:02:02,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:02:02,104 INFO L225 Difference]: With dead ends: 38072 [2022-11-02 21:02:02,104 INFO L226 Difference]: Without dead ends: 34451 [2022-11-02 21:02:02,114 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-02 21:02:02,114 INFO L413 NwaCegarLoop]: 277 mSDtfsCounter, 207 mSDsluCounter, 934 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 1211 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 32 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:02:02,114 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [207 Valid, 1211 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 32 Unchecked, 0.1s Time] [2022-11-02 21:02:02,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34451 states. [2022-11-02 21:02:02,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34451 to 31691. [2022-11-02 21:02:02,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31691 states, 31690 states have (on average 1.3734616598295992) internal successors, (43525), 31690 states have internal predecessors, (43525), 0 states have call successors, (0), 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 21:02:02,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31691 states to 31691 states and 43525 transitions. [2022-11-02 21:02:02,529 INFO L78 Accepts]: Start accepts. Automaton has 31691 states and 43525 transitions. Word has length 98 [2022-11-02 21:02:02,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:02:02,529 INFO L495 AbstractCegarLoop]: Abstraction has 31691 states and 43525 transitions. [2022-11-02 21:02:02,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 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 21:02:02,529 INFO L276 IsEmpty]: Start isEmpty. Operand 31691 states and 43525 transitions. [2022-11-02 21:02:02,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-02 21:02:02,552 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:02:02,553 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] [2022-11-02 21:02:02,575 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2022-11-02 21:02:02,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:02:02,753 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:02:02,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:02:02,754 INFO L85 PathProgramCache]: Analyzing trace with hash 133599373, now seen corresponding path program 1 times [2022-11-02 21:02:02,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:02:02,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [445239132] [2022-11-02 21:02:02,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:02:02,755 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:02:02,755 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:02:02,756 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:02:02,757 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2022-11-02 21:02:03,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:03,486 INFO L263 TraceCheckSpWp]: Trace formula consists of 1393 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 21:02:03,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:02:03,763 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 21:02:03,763 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:02:03,763 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:02:03,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [445239132] [2022-11-02 21:02:03,763 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [445239132] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:02:03,763 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:02:03,764 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:02:03,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262557911] [2022-11-02 21:02:03,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:02:03,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:02:03,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:02:03,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:02:03,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:02:03,765 INFO L87 Difference]: Start difference. First operand 31691 states and 43525 transitions. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 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 21:02:04,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:02:04,626 INFO L93 Difference]: Finished difference Result 36633 states and 50653 transitions. [2022-11-02 21:02:04,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 21:02:04,628 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 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 98 [2022-11-02 21:02:04,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:02:04,657 INFO L225 Difference]: With dead ends: 36633 [2022-11-02 21:02:04,657 INFO L226 Difference]: Without dead ends: 33278 [2022-11-02 21:02:04,666 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-02 21:02:04,667 INFO L413 NwaCegarLoop]: 264 mSDtfsCounter, 144 mSDsluCounter, 1039 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 1303 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 26 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:02:04,667 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 1303 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 43 Invalid, 0 Unknown, 26 Unchecked, 0.2s Time] [2022-11-02 21:02:04,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33278 states. [2022-11-02 21:02:05,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33278 to 32259. [2022-11-02 21:02:05,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32259 states, 32258 states have (on average 1.3731477462954926) internal successors, (44295), 32258 states have internal predecessors, (44295), 0 states have call successors, (0), 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 21:02:05,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32259 states to 32259 states and 44295 transitions. [2022-11-02 21:02:05,081 INFO L78 Accepts]: Start accepts. Automaton has 32259 states and 44295 transitions. Word has length 98 [2022-11-02 21:02:05,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:02:05,082 INFO L495 AbstractCegarLoop]: Abstraction has 32259 states and 44295 transitions. [2022-11-02 21:02:05,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 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 21:02:05,082 INFO L276 IsEmpty]: Start isEmpty. Operand 32259 states and 44295 transitions. [2022-11-02 21:02:05,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-02 21:02:05,118 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:02:05,119 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] [2022-11-02 21:02:05,152 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2022-11-02 21:02:05,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:02:05,343 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:02:05,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:02:05,343 INFO L85 PathProgramCache]: Analyzing trace with hash 1908606735, now seen corresponding path program 1 times [2022-11-02 21:02:05,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:02:05,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [379411245] [2022-11-02 21:02:05,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:02:05,345 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:02:05,345 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:02:05,345 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:02:05,347 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2022-11-02 21:02:05,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:06,012 INFO L263 TraceCheckSpWp]: Trace formula consists of 1393 conjuncts, 56 conjunts are in the unsatisfiable core [2022-11-02 21:02:06,017 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:02:07,744 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:02:07,744 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:02:15,407 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 21:02:15,407 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:02:15,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [379411245] [2022-11-02 21:02:15,407 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [379411245] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:02:15,408 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:02:15,408 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2022-11-02 21:02:15,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818923455] [2022-11-02 21:02:15,408 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:02:15,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 21:02:15,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:02:15,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 21:02:15,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=229, Unknown=2, NotChecked=0, Total=306 [2022-11-02 21:02:15,410 INFO L87 Difference]: Start difference. First operand 32259 states and 44295 transitions. Second operand has 18 states, 18 states have (on average 10.777777777777779) internal successors, (194), 18 states have internal predecessors, (194), 0 states have call successors, (0), 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 21:02:15,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:02:15,817 INFO L93 Difference]: Finished difference Result 36002 states and 49492 transitions. [2022-11-02 21:02:15,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 21:02:15,818 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 10.777777777777779) internal successors, (194), 18 states have internal predecessors, (194), 0 states have call successors, (0), 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 98 [2022-11-02 21:02:15,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:02:15,847 INFO L225 Difference]: With dead ends: 36002 [2022-11-02 21:02:15,848 INFO L226 Difference]: Without dead ends: 36000 [2022-11-02 21:02:15,855 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=83, Invalid=257, Unknown=2, NotChecked=0, Total=342 [2022-11-02 21:02:15,856 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 393 mSDsluCounter, 1155 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 393 SdHoareTripleChecker+Valid, 1285 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 26 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:02:15,856 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [393 Valid, 1285 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 26 Unchecked, 0.0s Time] [2022-11-02 21:02:15,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36000 states. [2022-11-02 21:02:16,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36000 to 35785. [2022-11-02 21:02:16,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35785 states, 35784 states have (on average 1.3752235636038452) internal successors, (49211), 35784 states have internal predecessors, (49211), 0 states have call successors, (0), 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 21:02:16,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35785 states to 35785 states and 49211 transitions. [2022-11-02 21:02:16,620 INFO L78 Accepts]: Start accepts. Automaton has 35785 states and 49211 transitions. Word has length 98 [2022-11-02 21:02:16,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:02:16,620 INFO L495 AbstractCegarLoop]: Abstraction has 35785 states and 49211 transitions. [2022-11-02 21:02:16,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 10.777777777777779) internal successors, (194), 18 states have internal predecessors, (194), 0 states have call successors, (0), 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 21:02:16,620 INFO L276 IsEmpty]: Start isEmpty. Operand 35785 states and 49211 transitions. [2022-11-02 21:02:16,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-02 21:02:16,658 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:02:16,658 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] [2022-11-02 21:02:16,677 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2022-11-02 21:02:16,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:02:16,859 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:02:16,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:02:16,859 INFO L85 PathProgramCache]: Analyzing trace with hash -1086473211, now seen corresponding path program 1 times [2022-11-02 21:02:16,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:02:16,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [335079584] [2022-11-02 21:02:16,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:02:16,861 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:02:16,861 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:02:16,862 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:02:16,865 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2022-11-02 21:02:17,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:17,557 INFO L263 TraceCheckSpWp]: Trace formula consists of 1393 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 21:02:17,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:02:17,724 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 21:02:17,725 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:02:17,725 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:02:17,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [335079584] [2022-11-02 21:02:17,725 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [335079584] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:02:17,725 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:02:17,725 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:02:17,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946569359] [2022-11-02 21:02:17,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:02:17,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:02:17,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:02:17,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:02:17,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:02:17,727 INFO L87 Difference]: Start difference. First operand 35785 states and 49211 transitions. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 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 21:02:18,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:02:18,429 INFO L93 Difference]: Finished difference Result 70170 states and 96165 transitions. [2022-11-02 21:02:18,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 21:02:18,430 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 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 98 [2022-11-02 21:02:18,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:02:18,477 INFO L225 Difference]: With dead ends: 70170 [2022-11-02 21:02:18,477 INFO L226 Difference]: Without dead ends: 56297 [2022-11-02 21:02:18,493 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-02 21:02:18,494 INFO L413 NwaCegarLoop]: 348 mSDtfsCounter, 343 mSDsluCounter, 904 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 343 SdHoareTripleChecker+Valid, 1252 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 11 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:02:18,494 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [343 Valid, 1252 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 11 Unchecked, 0.2s Time] [2022-11-02 21:02:18,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56297 states. [2022-11-02 21:02:19,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56297 to 35785. [2022-11-02 21:02:19,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35785 states, 35784 states have (on average 1.3698580371115583) internal successors, (49019), 35784 states have internal predecessors, (49019), 0 states have call successors, (0), 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 21:02:19,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35785 states to 35785 states and 49019 transitions. [2022-11-02 21:02:19,243 INFO L78 Accepts]: Start accepts. Automaton has 35785 states and 49019 transitions. Word has length 98 [2022-11-02 21:02:19,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:02:19,243 INFO L495 AbstractCegarLoop]: Abstraction has 35785 states and 49019 transitions. [2022-11-02 21:02:19,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 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 21:02:19,243 INFO L276 IsEmpty]: Start isEmpty. Operand 35785 states and 49019 transitions. [2022-11-02 21:02:19,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-02 21:02:19,269 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:02:19,269 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] [2022-11-02 21:02:19,287 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2022-11-02 21:02:19,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:02:19,470 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:02:19,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:02:19,470 INFO L85 PathProgramCache]: Analyzing trace with hash 174444039, now seen corresponding path program 1 times [2022-11-02 21:02:19,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:02:19,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1765329928] [2022-11-02 21:02:19,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:02:19,471 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:02:19,471 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:02:19,472 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:02:19,473 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7468bb83-0c67-4e2c-ad41-849d91b0ea73/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2022-11-02 21:02:20,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:20,103 INFO L263 TraceCheckSpWp]: Trace formula consists of 1393 conjuncts, 42 conjunts are in the unsatisfiable core [2022-11-02 21:02:20,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:02:21,569 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:02:21,569 INFO L328 TraceCheckSpWp]: Computing backward predicates...