./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_spinner32.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_070c5a46-23b7-4ffd-82b1-0aae86aa5141/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070c5a46-23b7-4ffd-82b1-0aae86aa5141/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_070c5a46-23b7-4ffd-82b1-0aae86aa5141/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070c5a46-23b7-4ffd-82b1-0aae86aa5141/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_spinner32.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070c5a46-23b7-4ffd-82b1-0aae86aa5141/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_070c5a46-23b7-4ffd-82b1-0aae86aa5141/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 c936dc57c77d69420d30086d462b35a7caa8e1e68cd109cc22e0b9f8298d81b3 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-02 21:05:04,254 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 21:05:04,256 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 21:05:04,284 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 21:05:04,284 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 21:05:04,285 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 21:05:04,286 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 21:05:04,288 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 21:05:04,290 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 21:05:04,291 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 21:05:04,292 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 21:05:04,293 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 21:05:04,293 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 21:05:04,294 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 21:05:04,295 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 21:05:04,297 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 21:05:04,297 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 21:05:04,298 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 21:05:04,300 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 21:05:04,301 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 21:05:04,303 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 21:05:04,304 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 21:05:04,305 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 21:05:04,306 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 21:05:04,309 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 21:05:04,309 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 21:05:04,309 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 21:05:04,310 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 21:05:04,311 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 21:05:04,312 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 21:05:04,312 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 21:05:04,313 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 21:05:04,313 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 21:05:04,314 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 21:05:04,315 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 21:05:04,315 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 21:05:04,316 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 21:05:04,316 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 21:05:04,317 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 21:05:04,318 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 21:05:04,318 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 21:05:04,319 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070c5a46-23b7-4ffd-82b1-0aae86aa5141/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-02 21:05:04,340 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 21:05:04,341 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 21:05:04,341 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 21:05:04,341 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 21:05:04,342 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 21:05:04,342 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 21:05:04,343 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 21:05:04,343 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 21:05:04,343 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 21:05:04,344 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 21:05:04,344 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 21:05:04,344 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 21:05:04,345 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 21:05:04,345 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 21:05:04,345 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 21:05:04,345 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 21:05:04,345 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 21:05:04,346 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 21:05:04,346 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 21:05:04,346 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 21:05:04,346 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 21:05:04,346 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:05:04,347 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 21:05:04,347 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 21:05:04,347 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 21:05:04,347 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 21:05:04,348 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 21:05:04,348 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 21:05:04,348 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 21:05:04,348 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 21:05:04,348 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_070c5a46-23b7-4ffd-82b1-0aae86aa5141/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070c5a46-23b7-4ffd-82b1-0aae86aa5141/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c936dc57c77d69420d30086d462b35a7caa8e1e68cd109cc22e0b9f8298d81b3 [2022-11-02 21:05:04,617 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 21:05:04,643 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 21:05:04,647 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 21:05:04,649 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 21:05:04,650 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 21:05:04,651 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070c5a46-23b7-4ffd-82b1-0aae86aa5141/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_spinner32.c [2022-11-02 21:05:04,719 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070c5a46-23b7-4ffd-82b1-0aae86aa5141/bin/uautomizer-Dbtcem3rbc/data/8748e7db5/7c35eecc077a4bc9978144f7594e17a1/FLAGc09e5ff7c [2022-11-02 21:05:05,154 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 21:05:05,154 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070c5a46-23b7-4ffd-82b1-0aae86aa5141/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_spinner32.c [2022-11-02 21:05:05,169 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070c5a46-23b7-4ffd-82b1-0aae86aa5141/bin/uautomizer-Dbtcem3rbc/data/8748e7db5/7c35eecc077a4bc9978144f7594e17a1/FLAGc09e5ff7c [2022-11-02 21:05:05,186 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070c5a46-23b7-4ffd-82b1-0aae86aa5141/bin/uautomizer-Dbtcem3rbc/data/8748e7db5/7c35eecc077a4bc9978144f7594e17a1 [2022-11-02 21:05:05,188 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 21:05:05,190 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 21:05:05,191 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 21:05:05,191 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 21:05:05,197 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 21:05:05,198 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:05:05" (1/1) ... [2022-11-02 21:05:05,200 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48586991 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:05:05, skipping insertion in model container [2022-11-02 21:05:05,200 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:05:05" (1/1) ... [2022-11-02 21:05:05,208 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 21:05:05,236 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 21:05:05,384 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_070c5a46-23b7-4ffd-82b1-0aae86aa5141/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_spinner32.c[1107,1120] [2022-11-02 21:05:05,503 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:05:05,507 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 21:05:05,518 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_070c5a46-23b7-4ffd-82b1-0aae86aa5141/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_spinner32.c[1107,1120] [2022-11-02 21:05:05,568 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:05:05,593 INFO L208 MainTranslator]: Completed translation [2022-11-02 21:05:05,593 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:05:05 WrapperNode [2022-11-02 21:05:05,593 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 21:05:05,594 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 21:05:05,595 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 21:05:05,595 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 21:05:05,603 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:05:05" (1/1) ... [2022-11-02 21:05:05,626 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:05:05" (1/1) ... [2022-11-02 21:05:05,686 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 259 [2022-11-02 21:05:05,686 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 21:05:05,687 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 21:05:05,687 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 21:05:05,687 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 21:05:05,706 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:05:05" (1/1) ... [2022-11-02 21:05:05,706 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:05:05" (1/1) ... [2022-11-02 21:05:05,710 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:05:05" (1/1) ... [2022-11-02 21:05:05,711 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:05:05" (1/1) ... [2022-11-02 21:05:05,741 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:05:05" (1/1) ... [2022-11-02 21:05:05,760 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:05:05" (1/1) ... [2022-11-02 21:05:05,762 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:05:05" (1/1) ... [2022-11-02 21:05:05,764 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:05:05" (1/1) ... [2022-11-02 21:05:05,768 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 21:05:05,779 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 21:05:05,779 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 21:05:05,779 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 21:05:05,780 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:05:05" (1/1) ... [2022-11-02 21:05:05,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:05:05,802 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070c5a46-23b7-4ffd-82b1-0aae86aa5141/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:05:05,818 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070c5a46-23b7-4ffd-82b1-0aae86aa5141/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 21:05:05,846 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070c5a46-23b7-4ffd-82b1-0aae86aa5141/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 21:05:05,865 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 21:05:05,865 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 21:05:06,021 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 21:05:06,023 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 21:05:06,528 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 21:05:06,537 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 21:05:06,540 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-02 21:05:06,543 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:05:06 BoogieIcfgContainer [2022-11-02 21:05:06,543 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 21:05:06,545 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 21:05:06,545 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 21:05:06,549 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 21:05:06,550 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 09:05:05" (1/3) ... [2022-11-02 21:05:06,551 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ab12c6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:05:06, skipping insertion in model container [2022-11-02 21:05:06,551 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:05:05" (2/3) ... [2022-11-02 21:05:06,551 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ab12c6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:05:06, skipping insertion in model container [2022-11-02 21:05:06,551 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:05:06" (3/3) ... [2022-11-02 21:05:06,553 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.vis_QF_BV_spinner32.c [2022-11-02 21:05:06,577 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 21:05:06,577 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 21:05:06,627 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 21:05:06,635 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;@50ebd584, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 21:05:06,635 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 21:05:06,639 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 31 states have (on average 1.4838709677419355) internal successors, (46), 32 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:06,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-02 21:05:06,646 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:05:06,647 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-02 21:05:06,648 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:05:06,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:05:06,664 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-11-02 21:05:06,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:05:06,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855894585] [2022-11-02 21:05:06,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:05:06,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:05:06,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 21:05:06,898 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 21:05:06,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 21:05:07,019 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 21:05:07,021 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-02 21:05:07,023 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-02 21:05:07,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 21:05:07,030 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-02 21:05:07,036 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-02 21:05:07,054 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-02 21:05:07,062 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.11 09:05:07 BoogieIcfgContainer [2022-11-02 21:05:07,062 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-02 21:05:07,063 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-02 21:05:07,063 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-02 21:05:07,063 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-02 21:05:07,064 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:05:06" (3/4) ... [2022-11-02 21:05:07,067 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-02 21:05:07,067 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-02 21:05:07,068 INFO L158 Benchmark]: Toolchain (without parser) took 1878.68ms. Allocated memory is still 98.6MB. Free memory was 60.4MB in the beginning and 48.6MB in the end (delta: 11.8MB). Peak memory consumption was 12.0MB. Max. memory is 16.1GB. [2022-11-02 21:05:07,069 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 98.6MB. Free memory is still 77.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 21:05:07,070 INFO L158 Benchmark]: CACSL2BoogieTranslator took 402.52ms. Allocated memory is still 98.6MB. Free memory was 60.2MB in the beginning and 69.8MB in the end (delta: -9.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-02 21:05:07,070 INFO L158 Benchmark]: Boogie Procedure Inliner took 91.62ms. Allocated memory is still 98.6MB. Free memory was 69.8MB in the beginning and 65.6MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-02 21:05:07,071 INFO L158 Benchmark]: Boogie Preprocessor took 91.69ms. Allocated memory is still 98.6MB. Free memory was 65.6MB in the beginning and 63.1MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-02 21:05:07,072 INFO L158 Benchmark]: RCFGBuilder took 764.15ms. Allocated memory is still 98.6MB. Free memory was 63.1MB in the beginning and 70.1MB in the end (delta: -7.0MB). Peak memory consumption was 31.2MB. Max. memory is 16.1GB. [2022-11-02 21:05:07,072 INFO L158 Benchmark]: TraceAbstraction took 516.93ms. Allocated memory is still 98.6MB. Free memory was 69.6MB in the beginning and 48.6MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2022-11-02 21:05:07,073 INFO L158 Benchmark]: Witness Printer took 4.64ms. Allocated memory is still 98.6MB. Free memory is still 48.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 21:05:07,076 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 98.6MB. Free memory is still 77.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 402.52ms. Allocated memory is still 98.6MB. Free memory was 60.2MB in the beginning and 69.8MB in the end (delta: -9.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 91.62ms. Allocated memory is still 98.6MB. Free memory was 69.8MB in the beginning and 65.6MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 91.69ms. Allocated memory is still 98.6MB. Free memory was 65.6MB in the beginning and 63.1MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 764.15ms. Allocated memory is still 98.6MB. Free memory was 63.1MB in the beginning and 70.1MB in the end (delta: -7.0MB). Peak memory consumption was 31.2MB. Max. memory is 16.1GB. * TraceAbstraction took 516.93ms. Allocated memory is still 98.6MB. Free memory was 69.6MB in the beginning and 48.6MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Witness Printer took 4.64ms. Allocated memory is still 98.6MB. Free memory is still 48.6MB. 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 100, overapproximation of bitwiseAnd at line 93. Possible FailurePath: [L25] const SORT_1 mask_SORT_1 = (SORT_1)-1 >> (sizeof(SORT_1) * 8 - 5); [L26] const SORT_1 msb_SORT_1 = (SORT_1)1 << (5 - 1); [L28] const SORT_3 mask_SORT_3 = (SORT_3)-1 >> (sizeof(SORT_3) * 8 - 1); [L29] const SORT_3 msb_SORT_3 = (SORT_3)1 << (1 - 1); [L31] const SORT_5 mask_SORT_5 = (SORT_5)-1 >> (sizeof(SORT_5) * 8 - 32); [L32] const SORT_5 msb_SORT_5 = (SORT_5)1 << (32 - 1); [L34] const SORT_25 mask_SORT_25 = (SORT_25)-1 >> (sizeof(SORT_25) * 8 - 31); [L35] const SORT_25 msb_SORT_25 = (SORT_25)1 << (31 - 1); [L37] const SORT_35 mask_SORT_35 = (SORT_35)-1 >> (sizeof(SORT_35) * 8 - 30); [L38] const SORT_35 msb_SORT_35 = (SORT_35)1 << (30 - 1); [L40] const SORT_37 mask_SORT_37 = (SORT_37)-1 >> (sizeof(SORT_37) * 8 - 29); [L41] const SORT_37 msb_SORT_37 = (SORT_37)1 << (29 - 1); [L43] const SORT_43 mask_SORT_43 = (SORT_43)-1 >> (sizeof(SORT_43) * 8 - 2); [L44] const SORT_43 msb_SORT_43 = (SORT_43)1 << (2 - 1); [L46] const SORT_49 mask_SORT_49 = (SORT_49)-1 >> (sizeof(SORT_49) * 8 - 28); [L47] const SORT_49 msb_SORT_49 = (SORT_49)1 << (28 - 1); [L49] const SORT_51 mask_SORT_51 = (SORT_51)-1 >> (sizeof(SORT_51) * 8 - 26); [L50] const SORT_51 msb_SORT_51 = (SORT_51)1 << (26 - 1); [L52] const SORT_57 mask_SORT_57 = (SORT_57)-1 >> (sizeof(SORT_57) * 8 - 4); [L53] const SORT_57 msb_SORT_57 = (SORT_57)1 << (4 - 1); [L55] const SORT_63 mask_SORT_63 = (SORT_63)-1 >> (sizeof(SORT_63) * 8 - 24); [L56] const SORT_63 msb_SORT_63 = (SORT_63)1 << (24 - 1); [L58] const SORT_65 mask_SORT_65 = (SORT_65)-1 >> (sizeof(SORT_65) * 8 - 20); [L59] const SORT_65 msb_SORT_65 = (SORT_65)1 << (20 - 1); [L61] const SORT_71 mask_SORT_71 = (SORT_71)-1 >> (sizeof(SORT_71) * 8 - 8); [L62] const SORT_71 msb_SORT_71 = (SORT_71)1 << (8 - 1); [L64] const SORT_77 mask_SORT_77 = (SORT_77)-1 >> (sizeof(SORT_77) * 8 - 16); [L65] const SORT_77 msb_SORT_77 = (SORT_77)1 << (16 - 1); [L67] const SORT_5 var_8 = 0; [L68] const SORT_5 var_11 = 2863311530; [L69] const SORT_3 var_15 = 1; [L70] const SORT_3 var_22 = 0; [L72] SORT_1 input_2; [L73] SORT_3 input_4; [L74] SORT_5 input_6; [L75] SORT_3 input_7; [L77] SORT_5 state_9 = __VERIFIER_nondet_uint() & mask_SORT_5; [L78] SORT_5 state_19 = __VERIFIER_nondet_uint() & mask_SORT_5; [L79] SORT_3 state_23 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L81] SORT_5 init_10_arg_1 = var_8; [L82] state_9 = init_10_arg_1 [L83] SORT_5 init_20_arg_1 = var_8; [L84] state_19 = init_20_arg_1 [L85] SORT_3 init_24_arg_1 = var_22; [L86] state_23 = init_24_arg_1 VAL [init_10_arg_1=0, init_20_arg_1=0, init_24_arg_1=0, mask_SORT_1=31, mask_SORT_25=4294967295, mask_SORT_3=1, mask_SORT_35=4294967295, mask_SORT_37=4294967295, mask_SORT_43=3, mask_SORT_49=4294967295, mask_SORT_5=4294967295, mask_SORT_51=4294967295, mask_SORT_57=15, mask_SORT_63=4294967295, mask_SORT_65=4294967295, mask_SORT_71=255, mask_SORT_77=65535, msb_SORT_1=16, msb_SORT_25=1073741824, msb_SORT_3=1, msb_SORT_35=536870912, msb_SORT_37=268435456, msb_SORT_43=2, msb_SORT_49=134217728, msb_SORT_5=2147483648, msb_SORT_51=33554432, msb_SORT_57=8, msb_SORT_63=8388608, msb_SORT_65=524288, msb_SORT_71=128, msb_SORT_77=32768, state_19=0, state_23=0, state_9=0, var_11=2863311530, var_15=1, var_22=0, var_8=0] [L89] input_2 = __VERIFIER_nondet_uchar() [L90] input_4 = __VERIFIER_nondet_uchar() [L91] input_6 = __VERIFIER_nondet_uint() [L92] input_7 = __VERIFIER_nondet_uchar() [L93] input_7 = input_7 & mask_SORT_3 [L96] SORT_5 var_12_arg_0 = state_9; [L97] SORT_5 var_12_arg_1 = var_11; [L98] SORT_3 var_12 = var_12_arg_0 != var_12_arg_1; [L99] SORT_3 var_16_arg_0 = var_12; [L100] SORT_3 var_16 = ~var_16_arg_0; [L101] SORT_3 var_17_arg_0 = var_15; [L102] SORT_3 var_17_arg_1 = var_16; [L103] SORT_3 var_17 = var_17_arg_0 & var_17_arg_1; [L104] var_17 = var_17 & mask_SORT_3 [L105] SORT_3 bad_18_arg_0 = var_17; [L106] CALL __VERIFIER_assert(!(bad_18_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, 33 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, 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=33occurred 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, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 5 NumberOfCodeBlocks, 5 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-02 21:05:07,114 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070c5a46-23b7-4ffd-82b1-0aae86aa5141/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070c5a46-23b7-4ffd-82b1-0aae86aa5141/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070c5a46-23b7-4ffd-82b1-0aae86aa5141/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_070c5a46-23b7-4ffd-82b1-0aae86aa5141/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070c5a46-23b7-4ffd-82b1-0aae86aa5141/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_spinner32.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070c5a46-23b7-4ffd-82b1-0aae86aa5141/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_070c5a46-23b7-4ffd-82b1-0aae86aa5141/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 c936dc57c77d69420d30086d462b35a7caa8e1e68cd109cc22e0b9f8298d81b3 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-02 21:05:09,350 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 21:05:09,352 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 21:05:09,387 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 21:05:09,387 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 21:05:09,389 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 21:05:09,390 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 21:05:09,392 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 21:05:09,393 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 21:05:09,394 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 21:05:09,395 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 21:05:09,396 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 21:05:09,397 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 21:05:09,398 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 21:05:09,399 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 21:05:09,400 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 21:05:09,401 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 21:05:09,402 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 21:05:09,403 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 21:05:09,405 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 21:05:09,407 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 21:05:09,408 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 21:05:09,409 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 21:05:09,410 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 21:05:09,413 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 21:05:09,414 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 21:05:09,414 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 21:05:09,415 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 21:05:09,415 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 21:05:09,416 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 21:05:09,417 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 21:05:09,417 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 21:05:09,418 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 21:05:09,419 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 21:05:09,420 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 21:05:09,420 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 21:05:09,421 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 21:05:09,421 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 21:05:09,421 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 21:05:09,422 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 21:05:09,423 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 21:05:09,427 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070c5a46-23b7-4ffd-82b1-0aae86aa5141/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-11-02 21:05:09,467 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 21:05:09,468 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 21:05:09,468 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 21:05:09,468 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 21:05:09,469 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 21:05:09,469 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 21:05:09,470 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 21:05:09,470 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 21:05:09,470 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 21:05:09,470 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 21:05:09,471 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 21:05:09,471 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 21:05:09,471 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 21:05:09,471 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 21:05:09,471 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-02 21:05:09,472 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-02 21:05:09,472 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-02 21:05:09,474 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 21:05:09,475 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 21:05:09,475 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 21:05:09,475 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 21:05:09,475 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 21:05:09,475 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 21:05:09,476 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:05:09,476 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 21:05:09,476 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 21:05:09,477 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 21:05:09,477 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-02 21:05:09,477 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-02 21:05:09,478 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 21:05:09,478 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 21:05:09,478 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 21:05:09,478 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-02 21:05:09,479 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_070c5a46-23b7-4ffd-82b1-0aae86aa5141/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070c5a46-23b7-4ffd-82b1-0aae86aa5141/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c936dc57c77d69420d30086d462b35a7caa8e1e68cd109cc22e0b9f8298d81b3 [2022-11-02 21:05:09,945 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 21:05:09,974 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 21:05:09,977 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 21:05:09,978 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 21:05:09,979 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 21:05:09,984 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070c5a46-23b7-4ffd-82b1-0aae86aa5141/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_spinner32.c [2022-11-02 21:05:10,070 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070c5a46-23b7-4ffd-82b1-0aae86aa5141/bin/uautomizer-Dbtcem3rbc/data/3f1e3fa35/94be6a27710e480fb6289d8ccdee9868/FLAGe13ec6f98 [2022-11-02 21:05:10,719 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 21:05:10,722 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070c5a46-23b7-4ffd-82b1-0aae86aa5141/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_spinner32.c [2022-11-02 21:05:10,733 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070c5a46-23b7-4ffd-82b1-0aae86aa5141/bin/uautomizer-Dbtcem3rbc/data/3f1e3fa35/94be6a27710e480fb6289d8ccdee9868/FLAGe13ec6f98 [2022-11-02 21:05:10,749 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070c5a46-23b7-4ffd-82b1-0aae86aa5141/bin/uautomizer-Dbtcem3rbc/data/3f1e3fa35/94be6a27710e480fb6289d8ccdee9868 [2022-11-02 21:05:10,751 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 21:05:10,753 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 21:05:10,757 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 21:05:10,757 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 21:05:10,761 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 21:05:10,762 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:05:10" (1/1) ... [2022-11-02 21:05:10,764 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5278964b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:05:10, skipping insertion in model container [2022-11-02 21:05:10,764 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:05:10" (1/1) ... [2022-11-02 21:05:10,771 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 21:05:10,795 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 21:05:10,944 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_070c5a46-23b7-4ffd-82b1-0aae86aa5141/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_spinner32.c[1107,1120] [2022-11-02 21:05:11,077 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:05:11,080 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 21:05:11,091 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_070c5a46-23b7-4ffd-82b1-0aae86aa5141/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_spinner32.c[1107,1120] [2022-11-02 21:05:11,139 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:05:11,161 INFO L208 MainTranslator]: Completed translation [2022-11-02 21:05:11,162 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:05:11 WrapperNode [2022-11-02 21:05:11,162 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 21:05:11,165 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 21:05:11,165 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 21:05:11,165 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 21:05:11,173 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:05:11" (1/1) ... [2022-11-02 21:05:11,195 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:05:11" (1/1) ... [2022-11-02 21:05:11,243 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 259 [2022-11-02 21:05:11,243 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 21:05:11,244 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 21:05:11,248 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 21:05:11,249 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 21:05:11,258 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:05:11" (1/1) ... [2022-11-02 21:05:11,258 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:05:11" (1/1) ... [2022-11-02 21:05:11,273 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:05:11" (1/1) ... [2022-11-02 21:05:11,286 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:05:11" (1/1) ... [2022-11-02 21:05:11,293 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:05:11" (1/1) ... [2022-11-02 21:05:11,298 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:05:11" (1/1) ... [2022-11-02 21:05:11,314 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:05:11" (1/1) ... [2022-11-02 21:05:11,315 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:05:11" (1/1) ... [2022-11-02 21:05:11,318 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 21:05:11,319 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 21:05:11,320 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 21:05:11,320 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 21:05:11,321 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:05:11" (1/1) ... [2022-11-02 21:05:11,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:05:11,347 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070c5a46-23b7-4ffd-82b1-0aae86aa5141/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:05:11,358 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070c5a46-23b7-4ffd-82b1-0aae86aa5141/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 21:05:11,384 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070c5a46-23b7-4ffd-82b1-0aae86aa5141/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 21:05:11,400 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 21:05:11,400 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 21:05:11,515 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 21:05:11,517 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 21:05:12,041 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 21:05:12,049 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 21:05:12,049 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-02 21:05:12,051 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:05:12 BoogieIcfgContainer [2022-11-02 21:05:12,051 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 21:05:12,068 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 21:05:12,068 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 21:05:12,072 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 21:05:12,072 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 09:05:10" (1/3) ... [2022-11-02 21:05:12,072 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@556ee902 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:05:12, skipping insertion in model container [2022-11-02 21:05:12,073 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:05:11" (2/3) ... [2022-11-02 21:05:12,073 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@556ee902 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:05:12, skipping insertion in model container [2022-11-02 21:05:12,073 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:05:12" (3/3) ... [2022-11-02 21:05:12,074 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.vis_QF_BV_spinner32.c [2022-11-02 21:05:12,100 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 21:05:12,100 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 21:05:12,186 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 21:05:12,195 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;@6353201e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 21:05:12,195 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 21:05:12,200 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 31 states have (on average 1.4838709677419355) internal successors, (46), 32 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:12,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-02 21:05:12,206 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:05:12,207 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-02 21:05:12,208 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:05:12,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:05:12,215 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-11-02 21:05:12,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:05:12,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2046721983] [2022-11-02 21:05:12,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:05:12,229 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:05:12,229 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070c5a46-23b7-4ffd-82b1-0aae86aa5141/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:05:12,233 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070c5a46-23b7-4ffd-82b1-0aae86aa5141/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:05:12,263 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070c5a46-23b7-4ffd-82b1-0aae86aa5141/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-02 21:05:12,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:12,386 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-02 21:05:12,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:05:12,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:05:12,620 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:05:12,620 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:05:12,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2046721983] [2022-11-02 21:05:12,621 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2046721983] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:05:12,621 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:05:12,622 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:05:12,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576768486] [2022-11-02 21:05:12,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:05:12,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:05:12,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:05:12,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:05:12,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:05:12,666 INFO L87 Difference]: Start difference. First operand has 33 states, 31 states have (on average 1.4838709677419355) internal successors, (46), 32 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:12,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:05:12,767 INFO L93 Difference]: Finished difference Result 86 states and 129 transitions. [2022-11-02 21:05:12,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:05:12,771 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-02 21:05:12,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:05:12,783 INFO L225 Difference]: With dead ends: 86 [2022-11-02 21:05:12,783 INFO L226 Difference]: Without dead ends: 55 [2022-11-02 21:05:12,793 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 21:05:12,799 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 70 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:05:12,803 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 107 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 21:05:12,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2022-11-02 21:05:12,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 31. [2022-11-02 21:05:12,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.4) internal successors, (42), 30 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:12,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2022-11-02 21:05:12,839 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 5 [2022-11-02 21:05:12,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:05:12,839 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2022-11-02 21:05:12,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:12,840 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2022-11-02 21:05:12,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-02 21:05:12,842 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:05:12,842 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] [2022-11-02 21:05:12,860 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070c5a46-23b7-4ffd-82b1-0aae86aa5141/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-02 21:05:13,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070c5a46-23b7-4ffd-82b1-0aae86aa5141/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:05:13,052 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:05:13,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:05:13,053 INFO L85 PathProgramCache]: Analyzing trace with hash 1346494011, now seen corresponding path program 1 times [2022-11-02 21:05:13,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:05:13,054 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [783079257] [2022-11-02 21:05:13,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:05:13,055 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:05:13,055 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070c5a46-23b7-4ffd-82b1-0aae86aa5141/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:05:13,060 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070c5a46-23b7-4ffd-82b1-0aae86aa5141/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:05:13,108 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070c5a46-23b7-4ffd-82b1-0aae86aa5141/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-02 21:05:13,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:13,266 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 21:05:13,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:05:13,364 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:05:13,364 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:05:13,365 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:05:13,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [783079257] [2022-11-02 21:05:13,365 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [783079257] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:05:13,365 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:05:13,366 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 21:05:13,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889743116] [2022-11-02 21:05:13,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:05:13,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 21:05:13,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:05:13,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 21:05:13,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 21:05:13,369 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:13,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:05:13,407 INFO L93 Difference]: Finished difference Result 62 states and 86 transitions. [2022-11-02 21:05:13,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 21:05:13,408 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 0 states have call successors, (0), 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 30 [2022-11-02 21:05:13,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:05:13,408 INFO L225 Difference]: With dead ends: 62 [2022-11-02 21:05:13,409 INFO L226 Difference]: Without dead ends: 35 [2022-11-02 21:05:13,409 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:05:13,410 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 1 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 15 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:05:13,411 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 168 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 15 Unchecked, 0.0s Time] [2022-11-02 21:05:13,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-11-02 21:05:13,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2022-11-02 21:05:13,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.3823529411764706) internal successors, (47), 34 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:13,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 47 transitions. [2022-11-02 21:05:13,417 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 47 transitions. Word has length 30 [2022-11-02 21:05:13,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:05:13,417 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 47 transitions. [2022-11-02 21:05:13,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:13,418 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 47 transitions. [2022-11-02 21:05:13,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-02 21:05:13,419 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:05:13,419 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] [2022-11-02 21:05:13,436 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070c5a46-23b7-4ffd-82b1-0aae86aa5141/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-02 21:05:13,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070c5a46-23b7-4ffd-82b1-0aae86aa5141/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:05:13,632 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:05:13,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:05:13,633 INFO L85 PathProgramCache]: Analyzing trace with hash -1143034951, now seen corresponding path program 1 times [2022-11-02 21:05:13,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:05:13,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1456385297] [2022-11-02 21:05:13,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:05:13,634 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:05:13,634 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070c5a46-23b7-4ffd-82b1-0aae86aa5141/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:05:13,639 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070c5a46-23b7-4ffd-82b1-0aae86aa5141/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:05:13,643 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070c5a46-23b7-4ffd-82b1-0aae86aa5141/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-02 21:05:13,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:13,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 21:05:13,801 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:05:13,998 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:05:13,998 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:05:13,998 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:05:13,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1456385297] [2022-11-02 21:05:13,998 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1456385297] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:05:13,999 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:05:13,999 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:05:13,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822447570] [2022-11-02 21:05:13,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:05:13,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:05:14,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:05:14,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:05:14,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:05:14,000 INFO L87 Difference]: Start difference. First operand 35 states and 47 transitions. Second operand has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:14,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:05:14,064 INFO L93 Difference]: Finished difference Result 114 states and 157 transitions. [2022-11-02 21:05:14,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 21:05:14,064 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 0 states have call successors, (0), 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 30 [2022-11-02 21:05:14,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:05:14,066 INFO L225 Difference]: With dead ends: 114 [2022-11-02 21:05:14,066 INFO L226 Difference]: Without dead ends: 87 [2022-11-02 21:05:14,066 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 24 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 21:05:14,067 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 82 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 268 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 24 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:05:14,068 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 268 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 24 Unchecked, 0.0s Time] [2022-11-02 21:05:14,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2022-11-02 21:05:14,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 53. [2022-11-02 21:05:14,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 52 states have (on average 1.4038461538461537) internal successors, (73), 52 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:14,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 73 transitions. [2022-11-02 21:05:14,076 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 73 transitions. Word has length 30 [2022-11-02 21:05:14,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:05:14,076 INFO L495 AbstractCegarLoop]: Abstraction has 53 states and 73 transitions. [2022-11-02 21:05:14,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:14,077 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 73 transitions. [2022-11-02 21:05:14,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-02 21:05:14,077 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:05:14,078 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] [2022-11-02 21:05:14,098 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070c5a46-23b7-4ffd-82b1-0aae86aa5141/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-02 21:05:14,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070c5a46-23b7-4ffd-82b1-0aae86aa5141/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:05:14,295 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:05:14,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:05:14,296 INFO L85 PathProgramCache]: Analyzing trace with hash 631972411, now seen corresponding path program 1 times [2022-11-02 21:05:14,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:05:14,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [419216694] [2022-11-02 21:05:14,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:05:14,297 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:05:14,297 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070c5a46-23b7-4ffd-82b1-0aae86aa5141/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:05:14,298 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070c5a46-23b7-4ffd-82b1-0aae86aa5141/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:05:14,302 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070c5a46-23b7-4ffd-82b1-0aae86aa5141/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-02 21:05:14,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:14,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 21:05:14,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:05:14,517 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:05:14,517 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:05:14,517 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:05:14,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [419216694] [2022-11-02 21:05:14,519 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [419216694] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:05:14,519 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:05:14,519 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:05:14,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777664933] [2022-11-02 21:05:14,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:05:14,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:05:14,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:05:14,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:05:14,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:05:14,524 INFO L87 Difference]: Start difference. First operand 53 states and 73 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:14,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:05:14,559 INFO L93 Difference]: Finished difference Result 111 states and 154 transitions. [2022-11-02 21:05:14,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:05:14,560 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 0 states have call successors, (0), 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 30 [2022-11-02 21:05:14,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:05:14,565 INFO L225 Difference]: With dead ends: 111 [2022-11-02 21:05:14,565 INFO L226 Difference]: Without dead ends: 84 [2022-11-02 21:05:14,567 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:05:14,573 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 49 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:05:14,574 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 144 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 21:05:14,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2022-11-02 21:05:14,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 57. [2022-11-02 21:05:14,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 56 states have (on average 1.3928571428571428) internal successors, (78), 56 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:14,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 78 transitions. [2022-11-02 21:05:14,590 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 78 transitions. Word has length 30 [2022-11-02 21:05:14,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:05:14,591 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 78 transitions. [2022-11-02 21:05:14,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:14,592 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 78 transitions. [2022-11-02 21:05:14,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-02 21:05:14,593 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:05:14,593 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] [2022-11-02 21:05:14,609 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070c5a46-23b7-4ffd-82b1-0aae86aa5141/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-02 21:05:14,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070c5a46-23b7-4ffd-82b1-0aae86aa5141/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:05:14,809 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:05:14,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:05:14,809 INFO L85 PathProgramCache]: Analyzing trace with hash 633819453, now seen corresponding path program 1 times [2022-11-02 21:05:14,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:05:14,810 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [572560680] [2022-11-02 21:05:14,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:05:14,810 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:05:14,811 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070c5a46-23b7-4ffd-82b1-0aae86aa5141/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:05:14,812 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070c5a46-23b7-4ffd-82b1-0aae86aa5141/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:05:14,815 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070c5a46-23b7-4ffd-82b1-0aae86aa5141/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-02 21:05:14,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:14,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 49 conjunts are in the unsatisfiable core [2022-11-02 21:05:14,955 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:05:16,239 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:05:16,239 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:05:19,872 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:05:19,873 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:05:19,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [572560680] [2022-11-02 21:05:19,873 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [572560680] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:05:19,873 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:05:19,873 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 36 [2022-11-02 21:05:19,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161429481] [2022-11-02 21:05:19,874 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:05:19,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-11-02 21:05:19,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:05:19,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-11-02 21:05:19,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=1174, Unknown=0, NotChecked=0, Total=1260 [2022-11-02 21:05:19,875 INFO L87 Difference]: Start difference. First operand 57 states and 78 transitions. Second operand has 36 states, 36 states have (on average 1.6111111111111112) internal successors, (58), 36 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:20,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:05:20,305 INFO L93 Difference]: Finished difference Result 122 states and 162 transitions. [2022-11-02 21:05:20,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-02 21:05:20,306 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.6111111111111112) internal successors, (58), 36 states have internal predecessors, (58), 0 states have call successors, (0), 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 30 [2022-11-02 21:05:20,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:05:20,308 INFO L225 Difference]: With dead ends: 122 [2022-11-02 21:05:20,308 INFO L226 Difference]: Without dead ends: 120 [2022-11-02 21:05:20,309 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=115, Invalid=1445, Unknown=0, NotChecked=0, Total=1560 [2022-11-02 21:05:20,310 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 124 mSDsluCounter, 1376 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 1443 SdHoareTripleChecker+Invalid, 327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 303 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:05:20,310 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 1443 Invalid, 327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 21 Invalid, 0 Unknown, 303 Unchecked, 0.1s Time] [2022-11-02 21:05:20,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2022-11-02 21:05:20,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 78. [2022-11-02 21:05:20,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 77 states have (on average 1.3766233766233766) internal successors, (106), 77 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:20,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 106 transitions. [2022-11-02 21:05:20,319 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 106 transitions. Word has length 30 [2022-11-02 21:05:20,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:05:20,319 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 106 transitions. [2022-11-02 21:05:20,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 1.6111111111111112) internal successors, (58), 36 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:20,320 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 106 transitions. [2022-11-02 21:05:20,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-02 21:05:20,321 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:05:20,321 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] [2022-11-02 21:05:20,338 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070c5a46-23b7-4ffd-82b1-0aae86aa5141/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-02 21:05:20,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070c5a46-23b7-4ffd-82b1-0aae86aa5141/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:05:20,534 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:05:20,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:05:20,534 INFO L85 PathProgramCache]: Analyzing trace with hash -1821246279, now seen corresponding path program 1 times [2022-11-02 21:05:20,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:05:20,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1048842745] [2022-11-02 21:05:20,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:05:20,535 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:05:20,535 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070c5a46-23b7-4ffd-82b1-0aae86aa5141/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:05:20,536 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070c5a46-23b7-4ffd-82b1-0aae86aa5141/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:05:20,537 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070c5a46-23b7-4ffd-82b1-0aae86aa5141/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-02 21:05:20,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:20,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 51 conjunts are in the unsatisfiable core [2022-11-02 21:05:20,678 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:05:21,769 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:05:21,770 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:05:24,734 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:05:24,734 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:05:24,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1048842745] [2022-11-02 21:05:24,735 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1048842745] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:05:24,735 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:05:24,735 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 36 [2022-11-02 21:05:24,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90239999] [2022-11-02 21:05:24,735 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:05:24,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-11-02 21:05:24,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:05:24,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-11-02 21:05:24,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=1174, Unknown=0, NotChecked=0, Total=1260 [2022-11-02 21:05:24,738 INFO L87 Difference]: Start difference. First operand 78 states and 106 transitions. Second operand has 36 states, 36 states have (on average 1.6111111111111112) internal successors, (58), 36 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:25,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:05:25,126 INFO L93 Difference]: Finished difference Result 139 states and 180 transitions. [2022-11-02 21:05:25,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-02 21:05:25,127 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.6111111111111112) internal successors, (58), 36 states have internal predecessors, (58), 0 states have call successors, (0), 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 30 [2022-11-02 21:05:25,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:05:25,128 INFO L225 Difference]: With dead ends: 139 [2022-11-02 21:05:25,128 INFO L226 Difference]: Without dead ends: 137 [2022-11-02 21:05:25,129 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=121, Invalid=1439, Unknown=0, NotChecked=0, Total=1560 [2022-11-02 21:05:25,130 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 115 mSDsluCounter, 1369 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 1431 SdHoareTripleChecker+Invalid, 315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 280 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:05:25,130 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 1431 Invalid, 315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 30 Invalid, 0 Unknown, 280 Unchecked, 0.1s Time] [2022-11-02 21:05:25,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2022-11-02 21:05:25,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 86. [2022-11-02 21:05:25,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 85 states have (on average 1.388235294117647) internal successors, (118), 85 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:25,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 118 transitions. [2022-11-02 21:05:25,139 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 118 transitions. Word has length 30 [2022-11-02 21:05:25,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:05:25,139 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 118 transitions. [2022-11-02 21:05:25,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 1.6111111111111112) internal successors, (58), 36 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:25,140 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 118 transitions. [2022-11-02 21:05:25,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-02 21:05:25,140 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:05:25,141 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] [2022-11-02 21:05:25,160 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070c5a46-23b7-4ffd-82b1-0aae86aa5141/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-02 21:05:25,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070c5a46-23b7-4ffd-82b1-0aae86aa5141/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:05:25,353 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:05:25,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:05:25,354 INFO L85 PathProgramCache]: Analyzing trace with hash 1334884031, now seen corresponding path program 1 times [2022-11-02 21:05:25,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:05:25,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1663438288] [2022-11-02 21:05:25,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:05:25,355 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:05:25,355 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070c5a46-23b7-4ffd-82b1-0aae86aa5141/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:05:25,355 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070c5a46-23b7-4ffd-82b1-0aae86aa5141/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:05:25,357 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070c5a46-23b7-4ffd-82b1-0aae86aa5141/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-02 21:05:25,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:25,490 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 21:05:25,492 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:05:25,599 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:05:25,599 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:05:25,599 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:05:25,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1663438288] [2022-11-02 21:05:25,599 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1663438288] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:05:25,600 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:05:25,600 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:05:25,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222575116] [2022-11-02 21:05:25,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:05:25,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:05:25,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:05:25,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:05:25,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:05:25,601 INFO L87 Difference]: Start difference. First operand 86 states and 118 transitions. Second operand has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:25,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:05:25,633 INFO L93 Difference]: Finished difference Result 130 states and 177 transitions. [2022-11-02 21:05:25,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 21:05:25,634 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 0 states have call successors, (0), 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 30 [2022-11-02 21:05:25,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:05:25,634 INFO L225 Difference]: With dead ends: 130 [2022-11-02 21:05:25,635 INFO L226 Difference]: Without dead ends: 86 [2022-11-02 21:05:25,635 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 24 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 21:05:25,636 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 15 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 16 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:05:25,636 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 186 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 16 Unchecked, 0.0s Time] [2022-11-02 21:05:25,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2022-11-02 21:05:25,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2022-11-02 21:05:25,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 85 states have (on average 1.3647058823529412) internal successors, (116), 85 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:25,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 116 transitions. [2022-11-02 21:05:25,642 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 116 transitions. Word has length 30 [2022-11-02 21:05:25,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:05:25,642 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 116 transitions. [2022-11-02 21:05:25,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:25,643 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 116 transitions. [2022-11-02 21:05:25,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-02 21:05:25,643 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:05:25,644 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] [2022-11-02 21:05:25,661 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070c5a46-23b7-4ffd-82b1-0aae86aa5141/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-02 21:05:25,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070c5a46-23b7-4ffd-82b1-0aae86aa5141/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:05:25,856 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:05:25,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:05:25,857 INFO L85 PathProgramCache]: Analyzing trace with hash 1886915003, now seen corresponding path program 1 times [2022-11-02 21:05:25,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:05:25,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [725238143] [2022-11-02 21:05:25,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:05:25,857 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:05:25,857 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070c5a46-23b7-4ffd-82b1-0aae86aa5141/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:05:25,858 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070c5a46-23b7-4ffd-82b1-0aae86aa5141/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:05:25,861 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070c5a46-23b7-4ffd-82b1-0aae86aa5141/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-02 21:05:25,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:26,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 21:05:26,002 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:05:26,110 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:05:26,110 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:05:26,111 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:05:26,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [725238143] [2022-11-02 21:05:26,111 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [725238143] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:05:26,111 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:05:26,111 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:05:26,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293081211] [2022-11-02 21:05:26,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:05:26,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:05:26,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:05:26,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:05:26,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:05:26,113 INFO L87 Difference]: Start difference. First operand 86 states and 116 transitions. Second operand has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:26,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:05:26,171 INFO L93 Difference]: Finished difference Result 160 states and 211 transitions. [2022-11-02 21:05:26,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 21:05:26,173 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 0 states have call successors, (0), 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 30 [2022-11-02 21:05:26,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:05:26,173 INFO L225 Difference]: With dead ends: 160 [2022-11-02 21:05:26,174 INFO L226 Difference]: Without dead ends: 116 [2022-11-02 21:05:26,174 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 24 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 21:05:26,175 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 68 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 297 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 11 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:05:26,175 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 297 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 11 Unchecked, 0.0s Time] [2022-11-02 21:05:26,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2022-11-02 21:05:26,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 82. [2022-11-02 21:05:26,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 81 states have (on average 1.345679012345679) internal successors, (109), 81 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:26,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 109 transitions. [2022-11-02 21:05:26,182 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 109 transitions. Word has length 30 [2022-11-02 21:05:26,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:05:26,182 INFO L495 AbstractCegarLoop]: Abstraction has 82 states and 109 transitions. [2022-11-02 21:05:26,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:26,183 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 109 transitions. [2022-11-02 21:05:26,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-02 21:05:26,183 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:05:26,184 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] [2022-11-02 21:05:26,202 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070c5a46-23b7-4ffd-82b1-0aae86aa5141/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-02 21:05:26,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070c5a46-23b7-4ffd-82b1-0aae86aa5141/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:05:26,402 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:05:26,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:05:26,403 INFO L85 PathProgramCache]: Analyzing trace with hash 748078017, now seen corresponding path program 1 times [2022-11-02 21:05:26,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:05:26,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [171373577] [2022-11-02 21:05:26,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:05:26,403 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:05:26,403 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070c5a46-23b7-4ffd-82b1-0aae86aa5141/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:05:26,405 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070c5a46-23b7-4ffd-82b1-0aae86aa5141/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:05:26,407 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070c5a46-23b7-4ffd-82b1-0aae86aa5141/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-02 21:05:26,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:26,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 50 conjunts are in the unsatisfiable core [2022-11-02 21:05:26,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:05:27,790 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:05:27,790 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:05:46,040 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:05:46,040 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:05:46,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [171373577] [2022-11-02 21:05:46,040 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [171373577] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:05:46,041 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:05:46,041 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 36 [2022-11-02 21:05:46,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10438347] [2022-11-02 21:05:46,041 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:05:46,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-11-02 21:05:46,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:05:46,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-11-02 21:05:46,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=1168, Unknown=6, NotChecked=0, Total=1260 [2022-11-02 21:05:46,045 INFO L87 Difference]: Start difference. First operand 82 states and 109 transitions. Second operand has 36 states, 36 states have (on average 1.6111111111111112) internal successors, (58), 36 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:46,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:05:46,743 INFO L93 Difference]: Finished difference Result 147 states and 189 transitions. [2022-11-02 21:05:46,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-02 21:05:46,744 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.6111111111111112) internal successors, (58), 36 states have internal predecessors, (58), 0 states have call successors, (0), 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 30 [2022-11-02 21:05:46,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:05:46,745 INFO L225 Difference]: With dead ends: 147 [2022-11-02 21:05:46,745 INFO L226 Difference]: Without dead ends: 145 [2022-11-02 21:05:46,746 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 19.3s TimeCoverageRelationStatistics Valid=115, Invalid=1439, Unknown=6, NotChecked=0, Total=1560 [2022-11-02 21:05:46,747 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 122 mSDsluCounter, 1259 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 1317 SdHoareTripleChecker+Invalid, 392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 357 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:05:46,747 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 1317 Invalid, 392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 32 Invalid, 0 Unknown, 357 Unchecked, 0.1s Time] [2022-11-02 21:05:46,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2022-11-02 21:05:46,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 92. [2022-11-02 21:05:46,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 91 states have (on average 1.3516483516483517) internal successors, (123), 91 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:46,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 123 transitions. [2022-11-02 21:05:46,754 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 123 transitions. Word has length 30 [2022-11-02 21:05:46,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:05:46,754 INFO L495 AbstractCegarLoop]: Abstraction has 92 states and 123 transitions. [2022-11-02 21:05:46,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 1.6111111111111112) internal successors, (58), 36 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:46,755 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 123 transitions. [2022-11-02 21:05:46,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-02 21:05:46,755 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:05:46,756 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] [2022-11-02 21:05:46,768 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070c5a46-23b7-4ffd-82b1-0aae86aa5141/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-02 21:05:46,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070c5a46-23b7-4ffd-82b1-0aae86aa5141/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:05:46,968 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:05:46,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:05:46,968 INFO L85 PathProgramCache]: Analyzing trace with hash -1706987715, now seen corresponding path program 1 times [2022-11-02 21:05:46,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:05:46,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [449261334] [2022-11-02 21:05:46,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:05:46,973 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:05:46,973 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070c5a46-23b7-4ffd-82b1-0aae86aa5141/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:05:46,980 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070c5a46-23b7-4ffd-82b1-0aae86aa5141/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:05:46,991 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070c5a46-23b7-4ffd-82b1-0aae86aa5141/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-02 21:05:47,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:47,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 49 conjunts are in the unsatisfiable core [2022-11-02 21:05:47,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:05:48,072 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:05:48,072 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:05:50,738 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:05:50,738 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:05:50,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [449261334] [2022-11-02 21:05:50,739 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [449261334] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:05:50,739 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:05:50,739 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 36 [2022-11-02 21:05:50,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562856981] [2022-11-02 21:05:50,740 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:05:50,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-11-02 21:05:50,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:05:50,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-11-02 21:05:50,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=1174, Unknown=0, NotChecked=0, Total=1260 [2022-11-02 21:05:50,742 INFO L87 Difference]: Start difference. First operand 92 states and 123 transitions. Second operand has 36 states, 36 states have (on average 1.6111111111111112) internal successors, (58), 36 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:51,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:05:51,115 INFO L93 Difference]: Finished difference Result 155 states and 197 transitions. [2022-11-02 21:05:51,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-02 21:05:51,116 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.6111111111111112) internal successors, (58), 36 states have internal predecessors, (58), 0 states have call successors, (0), 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 30 [2022-11-02 21:05:51,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:05:51,117 INFO L225 Difference]: With dead ends: 155 [2022-11-02 21:05:51,117 INFO L226 Difference]: Without dead ends: 153 [2022-11-02 21:05:51,118 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=118, Invalid=1442, Unknown=0, NotChecked=0, Total=1560 [2022-11-02 21:05:51,118 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 116 mSDsluCounter, 1479 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 1547 SdHoareTripleChecker+Invalid, 355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 312 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:05:51,119 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 1547 Invalid, 355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 39 Invalid, 0 Unknown, 312 Unchecked, 0.1s Time] [2022-11-02 21:05:51,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2022-11-02 21:05:51,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 98. [2022-11-02 21:05:51,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 97 states have (on average 1.3402061855670102) internal successors, (130), 97 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:51,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 130 transitions. [2022-11-02 21:05:51,125 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 130 transitions. Word has length 30 [2022-11-02 21:05:51,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:05:51,126 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 130 transitions. [2022-11-02 21:05:51,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 1.6111111111111112) internal successors, (58), 36 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:51,126 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 130 transitions. [2022-11-02 21:05:51,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-02 21:05:51,127 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:05:51,127 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] [2022-11-02 21:05:51,139 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070c5a46-23b7-4ffd-82b1-0aae86aa5141/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-02 21:05:51,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070c5a46-23b7-4ffd-82b1-0aae86aa5141/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:05:51,339 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:05:51,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:05:51,339 INFO L85 PathProgramCache]: Analyzing trace with hash -646044225, now seen corresponding path program 1 times [2022-11-02 21:05:51,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:05:51,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [219613432] [2022-11-02 21:05:51,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:05:51,340 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:05:51,340 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070c5a46-23b7-4ffd-82b1-0aae86aa5141/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:05:51,341 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070c5a46-23b7-4ffd-82b1-0aae86aa5141/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:05:51,342 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070c5a46-23b7-4ffd-82b1-0aae86aa5141/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-02 21:05:51,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:51,462 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 21:05:51,463 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:05:51,556 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:05:51,557 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:05:51,557 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:05:51,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [219613432] [2022-11-02 21:05:51,557 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [219613432] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:05:51,557 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:05:51,557 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:05:51,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904614346] [2022-11-02 21:05:51,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:05:51,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:05:51,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:05:51,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:05:51,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:05:51,559 INFO L87 Difference]: Start difference. First operand 98 states and 130 transitions. Second operand has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:51,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:05:51,587 INFO L93 Difference]: Finished difference Result 148 states and 195 transitions. [2022-11-02 21:05:51,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 21:05:51,588 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 0 states have call successors, (0), 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 30 [2022-11-02 21:05:51,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:05:51,588 INFO L225 Difference]: With dead ends: 148 [2022-11-02 21:05:51,589 INFO L226 Difference]: Without dead ends: 94 [2022-11-02 21:05:51,589 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 24 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 21:05:51,590 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 13 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 15 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:05:51,590 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 169 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 15 Unchecked, 0.0s Time] [2022-11-02 21:05:51,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2022-11-02 21:05:51,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2022-11-02 21:05:51,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 93 states have (on average 1.3225806451612903) internal successors, (123), 93 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:51,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 123 transitions. [2022-11-02 21:05:51,596 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 123 transitions. Word has length 30 [2022-11-02 21:05:51,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:05:51,596 INFO L495 AbstractCegarLoop]: Abstraction has 94 states and 123 transitions. [2022-11-02 21:05:51,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:51,596 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 123 transitions. [2022-11-02 21:05:51,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-02 21:05:51,597 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:05:51,597 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] [2022-11-02 21:05:51,613 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070c5a46-23b7-4ffd-82b1-0aae86aa5141/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (12)] Ended with exit code 0 [2022-11-02 21:05:51,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070c5a46-23b7-4ffd-82b1-0aae86aa5141/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:05:51,809 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:05:51,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:05:51,810 INFO L85 PathProgramCache]: Analyzing trace with hash -840269885, now seen corresponding path program 1 times [2022-11-02 21:05:51,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:05:51,810 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [616432658] [2022-11-02 21:05:51,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:05:51,811 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:05:51,811 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070c5a46-23b7-4ffd-82b1-0aae86aa5141/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:05:51,811 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070c5a46-23b7-4ffd-82b1-0aae86aa5141/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:05:51,813 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070c5a46-23b7-4ffd-82b1-0aae86aa5141/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-02 21:05:51,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:51,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 21:05:51,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:05:52,012 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:05:52,015 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:05:52,015 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:05:52,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [616432658] [2022-11-02 21:05:52,016 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [616432658] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:05:52,016 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:05:52,016 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:05:52,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334615291] [2022-11-02 21:05:52,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:05:52,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:05:52,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:05:52,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:05:52,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:05:52,017 INFO L87 Difference]: Start difference. First operand 94 states and 123 transitions. Second operand has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:52,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:05:52,088 INFO L93 Difference]: Finished difference Result 190 states and 246 transitions. [2022-11-02 21:05:52,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 21:05:52,089 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 0 states have call successors, (0), 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 30 [2022-11-02 21:05:52,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:05:52,090 INFO L225 Difference]: With dead ends: 190 [2022-11-02 21:05:52,090 INFO L226 Difference]: Without dead ends: 130 [2022-11-02 21:05:52,090 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 24 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 21:05:52,091 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 84 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 295 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 11 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:05:52,091 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 295 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 11 Unchecked, 0.0s Time] [2022-11-02 21:05:52,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2022-11-02 21:05:52,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 86. [2022-11-02 21:05:52,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 85 states have (on average 1.3058823529411765) internal successors, (111), 85 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:52,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 111 transitions. [2022-11-02 21:05:52,096 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 111 transitions. Word has length 30 [2022-11-02 21:05:52,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:05:52,096 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 111 transitions. [2022-11-02 21:05:52,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:52,096 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 111 transitions. [2022-11-02 21:05:52,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-02 21:05:52,097 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:05:52,097 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] [2022-11-02 21:05:52,115 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070c5a46-23b7-4ffd-82b1-0aae86aa5141/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-11-02 21:05:52,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070c5a46-23b7-4ffd-82b1-0aae86aa5141/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:05:52,310 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:05:52,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:05:52,310 INFO L85 PathProgramCache]: Analyzing trace with hash 2060575169, now seen corresponding path program 1 times [2022-11-02 21:05:52,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:05:52,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [616005602] [2022-11-02 21:05:52,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:05:52,311 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:05:52,311 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070c5a46-23b7-4ffd-82b1-0aae86aa5141/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:05:52,312 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070c5a46-23b7-4ffd-82b1-0aae86aa5141/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:05:52,318 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070c5a46-23b7-4ffd-82b1-0aae86aa5141/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-11-02 21:05:52,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:52,443 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 47 conjunts are in the unsatisfiable core [2022-11-02 21:05:52,445 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:05:53,270 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:05:53,271 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:05:56,340 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:05:56,340 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:05:56,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [616005602] [2022-11-02 21:05:56,341 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [616005602] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:05:56,341 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:05:56,341 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 36 [2022-11-02 21:05:56,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112369762] [2022-11-02 21:05:56,341 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:05:56,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-11-02 21:05:56,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:05:56,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-11-02 21:05:56,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=1174, Unknown=0, NotChecked=0, Total=1260 [2022-11-02 21:05:56,343 INFO L87 Difference]: Start difference. First operand 86 states and 111 transitions. Second operand has 36 states, 36 states have (on average 1.6111111111111112) internal successors, (58), 36 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:56,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:05:56,854 INFO L93 Difference]: Finished difference Result 131 states and 164 transitions. [2022-11-02 21:05:56,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-02 21:05:56,855 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.6111111111111112) internal successors, (58), 36 states have internal predecessors, (58), 0 states have call successors, (0), 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 30 [2022-11-02 21:05:56,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:05:56,856 INFO L225 Difference]: With dead ends: 131 [2022-11-02 21:05:56,856 INFO L226 Difference]: Without dead ends: 129 [2022-11-02 21:05:56,857 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=118, Invalid=1442, Unknown=0, NotChecked=0, Total=1560 [2022-11-02 21:05:56,858 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 108 mSDsluCounter, 1313 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 1372 SdHoareTripleChecker+Invalid, 300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 263 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:05:56,858 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 1372 Invalid, 300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 33 Invalid, 0 Unknown, 263 Unchecked, 0.1s Time] [2022-11-02 21:05:56,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2022-11-02 21:05:56,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 94. [2022-11-02 21:05:56,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 93 states have (on average 1.3010752688172043) internal successors, (121), 93 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:56,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 121 transitions. [2022-11-02 21:05:56,863 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 121 transitions. Word has length 30 [2022-11-02 21:05:56,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:05:56,864 INFO L495 AbstractCegarLoop]: Abstraction has 94 states and 121 transitions. [2022-11-02 21:05:56,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 1.6111111111111112) internal successors, (58), 36 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:56,864 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 121 transitions. [2022-11-02 21:05:56,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-02 21:05:56,865 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:05:56,865 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] [2022-11-02 21:05:56,882 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070c5a46-23b7-4ffd-82b1-0aae86aa5141/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (14)] Ended with exit code 0 [2022-11-02 21:05:57,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070c5a46-23b7-4ffd-82b1-0aae86aa5141/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:05:57,077 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:05:57,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:05:57,078 INFO L85 PathProgramCache]: Analyzing trace with hash -394490563, now seen corresponding path program 1 times [2022-11-02 21:05:57,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:05:57,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [647680857] [2022-11-02 21:05:57,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:05:57,078 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:05:57,078 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070c5a46-23b7-4ffd-82b1-0aae86aa5141/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:05:57,081 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070c5a46-23b7-4ffd-82b1-0aae86aa5141/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:05:57,082 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070c5a46-23b7-4ffd-82b1-0aae86aa5141/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-11-02 21:05:57,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:57,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 49 conjunts are in the unsatisfiable core [2022-11-02 21:05:57,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:05:58,051 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:05:58,051 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:06:01,050 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 21:06:01,050 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:06:01,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [647680857] [2022-11-02 21:06:01,051 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [647680857] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:06:01,051 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:06:01,051 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 36 [2022-11-02 21:06:01,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269573428] [2022-11-02 21:06:01,051 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:06:01,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-11-02 21:06:01,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:06:01,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-11-02 21:06:01,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=1174, Unknown=0, NotChecked=0, Total=1260 [2022-11-02 21:06:01,053 INFO L87 Difference]: Start difference. First operand 94 states and 121 transitions. Second operand has 36 states, 36 states have (on average 1.6111111111111112) internal successors, (58), 36 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:01,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:06:01,390 INFO L93 Difference]: Finished difference Result 131 states and 164 transitions. [2022-11-02 21:06:01,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-02 21:06:01,391 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.6111111111111112) internal successors, (58), 36 states have internal predecessors, (58), 0 states have call successors, (0), 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 30 [2022-11-02 21:06:01,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:06:01,392 INFO L225 Difference]: With dead ends: 131 [2022-11-02 21:06:01,392 INFO L226 Difference]: Without dead ends: 129 [2022-11-02 21:06:01,393 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=115, Invalid=1445, Unknown=0, NotChecked=0, Total=1560 [2022-11-02 21:06:01,393 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 89 mSDsluCounter, 1286 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 1346 SdHoareTripleChecker+Invalid, 315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 287 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:06:01,393 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 1346 Invalid, 315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 25 Invalid, 0 Unknown, 287 Unchecked, 0.0s Time] [2022-11-02 21:06:01,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2022-11-02 21:06:01,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 90. [2022-11-02 21:06:01,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 89 states have (on average 1.303370786516854) internal successors, (116), 89 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:01,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 116 transitions. [2022-11-02 21:06:01,399 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 116 transitions. Word has length 30 [2022-11-02 21:06:01,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:06:01,399 INFO L495 AbstractCegarLoop]: Abstraction has 90 states and 116 transitions. [2022-11-02 21:06:01,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 1.6111111111111112) internal successors, (58), 36 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:01,400 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 116 transitions. [2022-11-02 21:06:01,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-02 21:06:01,400 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:06:01,400 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] [2022-11-02 21:06:01,417 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070c5a46-23b7-4ffd-82b1-0aae86aa5141/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-11-02 21:06:01,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070c5a46-23b7-4ffd-82b1-0aae86aa5141/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:06:01,613 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:06:01,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:06:01,613 INFO L85 PathProgramCache]: Analyzing trace with hash -2120133563, now seen corresponding path program 1 times [2022-11-02 21:06:01,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:06:01,614 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [848786470] [2022-11-02 21:06:01,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:06:01,614 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:06:01,614 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070c5a46-23b7-4ffd-82b1-0aae86aa5141/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:06:01,615 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070c5a46-23b7-4ffd-82b1-0aae86aa5141/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:06:01,617 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070c5a46-23b7-4ffd-82b1-0aae86aa5141/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-11-02 21:06:01,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:06:01,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 51 conjunts are in the unsatisfiable core [2022-11-02 21:06:01,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:06:07,841 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 21:06:07,842 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:06:37,512 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 21:06:37,512 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:06:37,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [848786470] [2022-11-02 21:06:37,513 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [848786470] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:06:37,513 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:06:37,513 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 36 [2022-11-02 21:06:37,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939608449] [2022-11-02 21:06:37,513 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:06:37,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-11-02 21:06:37,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:06:37,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-11-02 21:06:37,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=1160, Unknown=14, NotChecked=0, Total=1260 [2022-11-02 21:06:37,515 INFO L87 Difference]: Start difference. First operand 90 states and 116 transitions. Second operand has 36 states, 36 states have (on average 1.6111111111111112) internal successors, (58), 36 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:55,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:06:55,230 INFO L93 Difference]: Finished difference Result 196 states and 247 transitions. [2022-11-02 21:06:55,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-02 21:06:55,231 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.6111111111111112) internal successors, (58), 36 states have internal predecessors, (58), 0 states have call successors, (0), 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 30 [2022-11-02 21:06:55,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:06:55,232 INFO L225 Difference]: With dead ends: 196 [2022-11-02 21:06:55,232 INFO L226 Difference]: Without dead ends: 194 [2022-11-02 21:06:55,233 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 228 ImplicationChecksByTransitivity, 52.7s TimeCoverageRelationStatistics Valid=223, Invalid=2313, Unknown=14, NotChecked=0, Total=2550 [2022-11-02 21:06:55,234 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 233 mSDsluCounter, 1710 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 1781 SdHoareTripleChecker+Invalid, 577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 508 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:06:55,234 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [233 Valid, 1781 Invalid, 577 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 60 Invalid, 0 Unknown, 508 Unchecked, 0.1s Time] [2022-11-02 21:06:55,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2022-11-02 21:06:55,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 108. [2022-11-02 21:06:55,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 107 states have (on average 1.308411214953271) internal successors, (140), 107 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:55,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 140 transitions. [2022-11-02 21:06:55,241 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 140 transitions. Word has length 30 [2022-11-02 21:06:55,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:06:55,242 INFO L495 AbstractCegarLoop]: Abstraction has 108 states and 140 transitions. [2022-11-02 21:06:55,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 1.6111111111111112) internal successors, (58), 36 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:55,242 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 140 transitions. [2022-11-02 21:06:55,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-02 21:06:55,243 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:06:55,243 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] [2022-11-02 21:06:55,261 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070c5a46-23b7-4ffd-82b1-0aae86aa5141/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-11-02 21:06:55,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070c5a46-23b7-4ffd-82b1-0aae86aa5141/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:06:55,456 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:06:55,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:06:55,456 INFO L85 PathProgramCache]: Analyzing trace with hash -280231999, now seen corresponding path program 1 times [2022-11-02 21:06:55,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:06:55,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [412401513] [2022-11-02 21:06:55,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:06:55,457 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:06:55,457 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070c5a46-23b7-4ffd-82b1-0aae86aa5141/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:06:55,458 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070c5a46-23b7-4ffd-82b1-0aae86aa5141/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:06:55,461 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070c5a46-23b7-4ffd-82b1-0aae86aa5141/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-11-02 21:06:55,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:06:55,563 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 47 conjunts are in the unsatisfiable core [2022-11-02 21:06:55,565 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:06:56,446 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 21:06:56,446 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:07:01,347 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 21:07:01,347 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:07:01,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [412401513] [2022-11-02 21:07:01,348 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [412401513] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:07:01,348 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:07:01,348 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 36 [2022-11-02 21:07:01,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153318453] [2022-11-02 21:07:01,349 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:07:01,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-11-02 21:07:01,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:07:01,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-11-02 21:07:01,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=1174, Unknown=0, NotChecked=0, Total=1260 [2022-11-02 21:07:01,350 INFO L87 Difference]: Start difference. First operand 108 states and 140 transitions. Second operand has 36 states, 36 states have (on average 1.6111111111111112) internal successors, (58), 36 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:01,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:07:01,703 INFO L93 Difference]: Finished difference Result 166 states and 207 transitions. [2022-11-02 21:07:01,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-02 21:07:01,704 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.6111111111111112) internal successors, (58), 36 states have internal predecessors, (58), 0 states have call successors, (0), 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 30 [2022-11-02 21:07:01,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:07:01,705 INFO L225 Difference]: With dead ends: 166 [2022-11-02 21:07:01,705 INFO L226 Difference]: Without dead ends: 164 [2022-11-02 21:07:01,706 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=118, Invalid=1442, Unknown=0, NotChecked=0, Total=1560 [2022-11-02 21:07:01,706 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 122 mSDsluCounter, 1403 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 1471 SdHoareTripleChecker+Invalid, 346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 318 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:07:01,707 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 1471 Invalid, 346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 24 Invalid, 0 Unknown, 318 Unchecked, 0.0s Time] [2022-11-02 21:07:01,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2022-11-02 21:07:01,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 110. [2022-11-02 21:07:01,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 109 states have (on average 1.3027522935779816) internal successors, (142), 109 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:01,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 142 transitions. [2022-11-02 21:07:01,713 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 142 transitions. Word has length 30 [2022-11-02 21:07:01,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:07:01,713 INFO L495 AbstractCegarLoop]: Abstraction has 110 states and 142 transitions. [2022-11-02 21:07:01,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 1.6111111111111112) internal successors, (58), 36 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:01,714 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 142 transitions. [2022-11-02 21:07:01,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-02 21:07:01,714 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:07:01,714 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] [2022-11-02 21:07:01,725 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070c5a46-23b7-4ffd-82b1-0aae86aa5141/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-11-02 21:07:01,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070c5a46-23b7-4ffd-82b1-0aae86aa5141/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:07:01,920 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:07:01,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:07:01,921 INFO L85 PathProgramCache]: Analyzing trace with hash 485889991, now seen corresponding path program 1 times [2022-11-02 21:07:01,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:07:01,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [856537903] [2022-11-02 21:07:01,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:07:01,921 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:07:01,922 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070c5a46-23b7-4ffd-82b1-0aae86aa5141/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:07:01,923 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070c5a46-23b7-4ffd-82b1-0aae86aa5141/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:07:01,927 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070c5a46-23b7-4ffd-82b1-0aae86aa5141/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-11-02 21:07:02,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:02,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 21:07:02,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:07:02,119 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 21:07:02,119 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:07:02,119 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:07:02,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [856537903] [2022-11-02 21:07:02,119 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [856537903] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:07:02,120 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:07:02,120 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:07:02,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281386448] [2022-11-02 21:07:02,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:07:02,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:07:02,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:07:02,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:07:02,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:07:02,121 INFO L87 Difference]: Start difference. First operand 110 states and 142 transitions. Second operand has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:02,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:07:02,149 INFO L93 Difference]: Finished difference Result 178 states and 229 transitions. [2022-11-02 21:07:02,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:07:02,150 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 0 states have call successors, (0), 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 30 [2022-11-02 21:07:02,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:07:02,151 INFO L225 Difference]: With dead ends: 178 [2022-11-02 21:07:02,151 INFO L226 Difference]: Without dead ends: 102 [2022-11-02 21:07:02,152 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 24 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 21:07:02,153 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 8 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 15 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:07:02,154 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 192 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 15 Unchecked, 0.0s Time] [2022-11-02 21:07:02,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2022-11-02 21:07:02,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2022-11-02 21:07:02,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 101 states have (on average 1.2871287128712872) internal successors, (130), 101 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:02,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 130 transitions. [2022-11-02 21:07:02,159 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 130 transitions. Word has length 30 [2022-11-02 21:07:02,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:07:02,159 INFO L495 AbstractCegarLoop]: Abstraction has 102 states and 130 transitions. [2022-11-02 21:07:02,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:02,160 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 130 transitions. [2022-11-02 21:07:02,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-02 21:07:02,160 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:07:02,160 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] [2022-11-02 21:07:02,169 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070c5a46-23b7-4ffd-82b1-0aae86aa5141/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-11-02 21:07:02,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070c5a46-23b7-4ffd-82b1-0aae86aa5141/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:07:02,361 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:07:02,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:07:02,361 INFO L85 PathProgramCache]: Analyzing trace with hash 1056521279, now seen corresponding path program 1 times [2022-11-02 21:07:02,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:07:02,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2068037878] [2022-11-02 21:07:02,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:07:02,362 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:07:02,363 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070c5a46-23b7-4ffd-82b1-0aae86aa5141/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:07:02,364 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070c5a46-23b7-4ffd-82b1-0aae86aa5141/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:07:02,368 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070c5a46-23b7-4ffd-82b1-0aae86aa5141/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-11-02 21:07:02,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:02,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 21:07:02,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:07:02,538 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 21:07:02,538 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:07:02,539 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:07:02,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2068037878] [2022-11-02 21:07:02,539 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2068037878] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:07:02,539 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:07:02,539 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:07:02,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697650217] [2022-11-02 21:07:02,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:07:02,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:07:02,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:07:02,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:07:02,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:07:02,541 INFO L87 Difference]: Start difference. First operand 102 states and 130 transitions. Second operand has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:02,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:07:02,597 INFO L93 Difference]: Finished difference Result 200 states and 256 transitions. [2022-11-02 21:07:02,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:07:02,597 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 0 states have call successors, (0), 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 30 [2022-11-02 21:07:02,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:07:02,598 INFO L225 Difference]: With dead ends: 200 [2022-11-02 21:07:02,598 INFO L226 Difference]: Without dead ends: 136 [2022-11-02 21:07:02,599 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 24 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 21:07:02,599 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 41 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 286 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 10 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:07:02,600 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 286 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 10 Unchecked, 0.0s Time] [2022-11-02 21:07:02,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2022-11-02 21:07:02,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 90. [2022-11-02 21:07:02,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 89 states have (on average 1.2696629213483146) internal successors, (113), 89 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:02,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 113 transitions. [2022-11-02 21:07:02,605 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 113 transitions. Word has length 30 [2022-11-02 21:07:02,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:07:02,605 INFO L495 AbstractCegarLoop]: Abstraction has 90 states and 113 transitions. [2022-11-02 21:07:02,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:02,606 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 113 transitions. [2022-11-02 21:07:02,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-02 21:07:02,606 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:07:02,606 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] [2022-11-02 21:07:02,624 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070c5a46-23b7-4ffd-82b1-0aae86aa5141/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-11-02 21:07:02,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070c5a46-23b7-4ffd-82b1-0aae86aa5141/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:07:02,818 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:07:02,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:07:02,819 INFO L85 PathProgramCache]: Analyzing trace with hash -632422463, now seen corresponding path program 1 times [2022-11-02 21:07:02,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:07:02,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [549851402] [2022-11-02 21:07:02,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:07:02,819 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:07:02,820 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070c5a46-23b7-4ffd-82b1-0aae86aa5141/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:07:02,820 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070c5a46-23b7-4ffd-82b1-0aae86aa5141/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:07:02,835 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070c5a46-23b7-4ffd-82b1-0aae86aa5141/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-11-02 21:07:02,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:02,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 47 conjunts are in the unsatisfiable core [2022-11-02 21:07:02,960 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:07:03,854 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 21:07:03,854 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:07:11,105 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 21:07:11,105 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:07:11,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [549851402] [2022-11-02 21:07:11,106 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [549851402] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:07:11,106 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:07:11,106 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 36 [2022-11-02 21:07:11,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985323729] [2022-11-02 21:07:11,106 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:07:11,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-11-02 21:07:11,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:07:11,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-11-02 21:07:11,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=1174, Unknown=0, NotChecked=0, Total=1260 [2022-11-02 21:07:11,108 INFO L87 Difference]: Start difference. First operand 90 states and 113 transitions. Second operand has 36 states, 36 states have (on average 1.6111111111111112) internal successors, (58), 36 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:13,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:07:13,090 INFO L93 Difference]: Finished difference Result 173 states and 216 transitions. [2022-11-02 21:07:13,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-02 21:07:13,091 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.6111111111111112) internal successors, (58), 36 states have internal predecessors, (58), 0 states have call successors, (0), 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 30 [2022-11-02 21:07:13,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:07:13,092 INFO L225 Difference]: With dead ends: 173 [2022-11-02 21:07:13,092 INFO L226 Difference]: Without dead ends: 171 [2022-11-02 21:07:13,094 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 328 ImplicationChecksByTransitivity, 9.4s TimeCoverageRelationStatistics Valid=298, Invalid=2894, Unknown=0, NotChecked=0, Total=3192 [2022-11-02 21:07:13,094 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 336 mSDsluCounter, 2843 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 336 SdHoareTripleChecker+Valid, 2975 SdHoareTripleChecker+Invalid, 634 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 561 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:07:13,094 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [336 Valid, 2975 Invalid, 634 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 69 Invalid, 0 Unknown, 561 Unchecked, 0.1s Time] [2022-11-02 21:07:13,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2022-11-02 21:07:13,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 102. [2022-11-02 21:07:13,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 101 states have (on average 1.2673267326732673) internal successors, (128), 101 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:13,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 128 transitions. [2022-11-02 21:07:13,101 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 128 transitions. Word has length 30 [2022-11-02 21:07:13,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:07:13,102 INFO L495 AbstractCegarLoop]: Abstraction has 102 states and 128 transitions. [2022-11-02 21:07:13,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 1.6111111111111112) internal successors, (58), 36 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:13,102 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 128 transitions. [2022-11-02 21:07:13,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-02 21:07:13,102 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:07:13,102 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] [2022-11-02 21:07:13,115 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070c5a46-23b7-4ffd-82b1-0aae86aa5141/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-11-02 21:07:13,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070c5a46-23b7-4ffd-82b1-0aae86aa5141/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:07:13,303 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:07:13,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:07:13,303 INFO L85 PathProgramCache]: Analyzing trace with hash 1207479101, now seen corresponding path program 1 times [2022-11-02 21:07:13,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:07:13,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [254361434] [2022-11-02 21:07:13,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:07:13,304 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:07:13,304 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070c5a46-23b7-4ffd-82b1-0aae86aa5141/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:07:13,305 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070c5a46-23b7-4ffd-82b1-0aae86aa5141/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:07:13,308 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070c5a46-23b7-4ffd-82b1-0aae86aa5141/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-11-02 21:07:13,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:13,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 49 conjunts are in the unsatisfiable core [2022-11-02 21:07:13,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:07:14,331 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 21:07:14,331 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:07:17,935 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 21:07:17,935 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:07:17,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [254361434] [2022-11-02 21:07:17,935 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [254361434] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:07:17,935 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:07:17,935 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 36 [2022-11-02 21:07:17,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191943709] [2022-11-02 21:07:17,936 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:07:17,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-11-02 21:07:17,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:07:17,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-11-02 21:07:17,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=1174, Unknown=0, NotChecked=0, Total=1260 [2022-11-02 21:07:17,938 INFO L87 Difference]: Start difference. First operand 102 states and 128 transitions. Second operand has 36 states, 36 states have (on average 1.6111111111111112) internal successors, (58), 36 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:19,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:07:19,585 INFO L93 Difference]: Finished difference Result 179 states and 224 transitions. [2022-11-02 21:07:19,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-02 21:07:19,586 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.6111111111111112) internal successors, (58), 36 states have internal predecessors, (58), 0 states have call successors, (0), 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 30 [2022-11-02 21:07:19,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:07:19,587 INFO L225 Difference]: With dead ends: 179 [2022-11-02 21:07:19,587 INFO L226 Difference]: Without dead ends: 177 [2022-11-02 21:07:19,588 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 255 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=221, Invalid=2535, Unknown=0, NotChecked=0, Total=2756 [2022-11-02 21:07:19,588 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 244 mSDsluCounter, 2196 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 2310 SdHoareTripleChecker+Invalid, 443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 352 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:07:19,589 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [244 Valid, 2310 Invalid, 443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 86 Invalid, 0 Unknown, 352 Unchecked, 0.1s Time] [2022-11-02 21:07:19,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2022-11-02 21:07:19,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 98. [2022-11-02 21:07:19,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 97 states have (on average 1.268041237113402) internal successors, (123), 97 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:19,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 123 transitions. [2022-11-02 21:07:19,596 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 123 transitions. Word has length 30 [2022-11-02 21:07:19,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:07:19,596 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 123 transitions. [2022-11-02 21:07:19,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 1.6111111111111112) internal successors, (58), 36 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:19,596 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 123 transitions. [2022-11-02 21:07:19,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-02 21:07:19,597 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:07:19,597 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] [2022-11-02 21:07:19,609 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070c5a46-23b7-4ffd-82b1-0aae86aa5141/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-11-02 21:07:19,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070c5a46-23b7-4ffd-82b1-0aae86aa5141/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:07:19,800 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:07:19,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:07:19,801 INFO L85 PathProgramCache]: Analyzing trace with hash -518163899, now seen corresponding path program 1 times [2022-11-02 21:07:19,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:07:19,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [870492051] [2022-11-02 21:07:19,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:07:19,801 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:07:19,801 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070c5a46-23b7-4ffd-82b1-0aae86aa5141/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:07:19,802 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070c5a46-23b7-4ffd-82b1-0aae86aa5141/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:07:19,804 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070c5a46-23b7-4ffd-82b1-0aae86aa5141/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-11-02 21:07:19,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:19,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 48 conjunts are in the unsatisfiable core [2022-11-02 21:07:19,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:07:21,119 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 21:07:21,120 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:07:37,977 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 21:07:37,977 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:07:37,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [870492051] [2022-11-02 21:07:37,978 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [870492051] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:07:37,978 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:07:37,978 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 36 [2022-11-02 21:07:37,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774986961] [2022-11-02 21:07:37,978 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:07:37,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-11-02 21:07:37,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:07:37,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-11-02 21:07:37,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=1170, Unknown=4, NotChecked=0, Total=1260 [2022-11-02 21:07:37,980 INFO L87 Difference]: Start difference. First operand 98 states and 123 transitions. Second operand has 36 states, 36 states have (on average 1.6111111111111112) internal successors, (58), 36 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:41,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:07:41,310 INFO L93 Difference]: Finished difference Result 201 states and 251 transitions. [2022-11-02 21:07:41,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-02 21:07:41,310 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.6111111111111112) internal successors, (58), 36 states have internal predecessors, (58), 0 states have call successors, (0), 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 30 [2022-11-02 21:07:41,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:07:41,312 INFO L225 Difference]: With dead ends: 201 [2022-11-02 21:07:41,312 INFO L226 Difference]: Without dead ends: 199 [2022-11-02 21:07:41,312 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 451 ImplicationChecksByTransitivity, 20.3s TimeCoverageRelationStatistics Valid=462, Invalid=3316, Unknown=4, NotChecked=0, Total=3782 [2022-11-02 21:07:41,313 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 422 mSDsluCounter, 2662 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 422 SdHoareTripleChecker+Valid, 2771 SdHoareTripleChecker+Invalid, 787 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 553 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 21:07:41,314 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [422 Valid, 2771 Invalid, 787 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 221 Invalid, 0 Unknown, 553 Unchecked, 0.3s Time] [2022-11-02 21:07:41,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2022-11-02 21:07:41,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 102. [2022-11-02 21:07:41,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 101 states have (on average 1.2673267326732673) internal successors, (128), 101 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:41,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 128 transitions. [2022-11-02 21:07:41,322 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 128 transitions. Word has length 30 [2022-11-02 21:07:41,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:07:41,322 INFO L495 AbstractCegarLoop]: Abstraction has 102 states and 128 transitions. [2022-11-02 21:07:41,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 1.6111111111111112) internal successors, (58), 36 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:41,322 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 128 transitions. [2022-11-02 21:07:41,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-02 21:07:41,323 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:07:41,323 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] [2022-11-02 21:07:41,336 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070c5a46-23b7-4ffd-82b1-0aae86aa5141/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-11-02 21:07:41,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070c5a46-23b7-4ffd-82b1-0aae86aa5141/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:07:41,532 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:07:41,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:07:41,533 INFO L85 PathProgramCache]: Analyzing trace with hash 1321737665, now seen corresponding path program 1 times [2022-11-02 21:07:41,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:07:41,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1917736614] [2022-11-02 21:07:41,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:07:41,533 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:07:41,533 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070c5a46-23b7-4ffd-82b1-0aae86aa5141/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:07:41,534 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070c5a46-23b7-4ffd-82b1-0aae86aa5141/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:07:41,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070c5a46-23b7-4ffd-82b1-0aae86aa5141/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-11-02 21:07:41,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:41,641 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 47 conjunts are in the unsatisfiable core [2022-11-02 21:07:41,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:07:42,416 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 21:07:42,416 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:07:46,282 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 21:07:46,283 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:07:46,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1917736614] [2022-11-02 21:07:46,283 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1917736614] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:07:46,283 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:07:46,283 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 36 [2022-11-02 21:07:46,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103859112] [2022-11-02 21:07:46,283 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:07:46,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-11-02 21:07:46,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:07:46,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-11-02 21:07:46,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=1174, Unknown=0, NotChecked=0, Total=1260 [2022-11-02 21:07:46,285 INFO L87 Difference]: Start difference. First operand 102 states and 128 transitions. Second operand has 36 states, 36 states have (on average 1.6111111111111112) internal successors, (58), 36 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:48,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:07:48,073 INFO L93 Difference]: Finished difference Result 180 states and 225 transitions. [2022-11-02 21:07:48,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-02 21:07:48,074 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.6111111111111112) internal successors, (58), 36 states have internal predecessors, (58), 0 states have call successors, (0), 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 30 [2022-11-02 21:07:48,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:07:48,075 INFO L225 Difference]: With dead ends: 180 [2022-11-02 21:07:48,076 INFO L226 Difference]: Without dead ends: 178 [2022-11-02 21:07:48,076 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 324 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=328, Invalid=2864, Unknown=0, NotChecked=0, Total=3192 [2022-11-02 21:07:48,077 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 274 mSDsluCounter, 2108 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 274 SdHoareTripleChecker+Valid, 2222 SdHoareTripleChecker+Invalid, 533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 466 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:07:48,077 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [274 Valid, 2222 Invalid, 533 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 61 Invalid, 0 Unknown, 466 Unchecked, 0.1s Time] [2022-11-02 21:07:48,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2022-11-02 21:07:48,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 94. [2022-11-02 21:07:48,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 93 states have (on average 1.2688172043010753) internal successors, (118), 93 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:48,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 118 transitions. [2022-11-02 21:07:48,084 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 118 transitions. Word has length 30 [2022-11-02 21:07:48,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:07:48,084 INFO L495 AbstractCegarLoop]: Abstraction has 94 states and 118 transitions. [2022-11-02 21:07:48,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 1.6111111111111112) internal successors, (58), 36 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:48,084 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 118 transitions. [2022-11-02 21:07:48,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-02 21:07:48,085 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:07:48,085 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] [2022-11-02 21:07:48,097 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070c5a46-23b7-4ffd-82b1-0aae86aa5141/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2022-11-02 21:07:48,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070c5a46-23b7-4ffd-82b1-0aae86aa5141/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:07:48,296 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:07:48,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:07:48,297 INFO L85 PathProgramCache]: Analyzing trace with hash 794333253, now seen corresponding path program 1 times [2022-11-02 21:07:48,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:07:48,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1447842546] [2022-11-02 21:07:48,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:07:48,297 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:07:48,298 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070c5a46-23b7-4ffd-82b1-0aae86aa5141/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:07:48,299 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070c5a46-23b7-4ffd-82b1-0aae86aa5141/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:07:48,302 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070c5a46-23b7-4ffd-82b1-0aae86aa5141/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-11-02 21:07:48,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:48,403 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 45 conjunts are in the unsatisfiable core [2022-11-02 21:07:48,404 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:07:49,257 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 21:07:49,257 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:07:56,626 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 21:07:56,626 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:07:56,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1447842546] [2022-11-02 21:07:56,626 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1447842546] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:07:56,627 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:07:56,627 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 36 [2022-11-02 21:07:56,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351716840] [2022-11-02 21:07:56,627 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:07:56,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-11-02 21:07:56,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:07:56,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-11-02 21:07:56,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=1174, Unknown=0, NotChecked=0, Total=1260 [2022-11-02 21:07:56,629 INFO L87 Difference]: Start difference. First operand 94 states and 118 transitions. Second operand has 36 states, 36 states have (on average 1.6111111111111112) internal successors, (58), 36 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:59,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:07:59,012 INFO L93 Difference]: Finished difference Result 189 states and 237 transitions. [2022-11-02 21:07:59,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-02 21:07:59,013 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.6111111111111112) internal successors, (58), 36 states have internal predecessors, (58), 0 states have call successors, (0), 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 30 [2022-11-02 21:07:59,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:07:59,014 INFO L225 Difference]: With dead ends: 189 [2022-11-02 21:07:59,014 INFO L226 Difference]: Without dead ends: 187 [2022-11-02 21:07:59,015 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 460 ImplicationChecksByTransitivity, 9.7s TimeCoverageRelationStatistics Valid=540, Invalid=3242, Unknown=0, NotChecked=0, Total=3782 [2022-11-02 21:07:59,016 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 384 mSDsluCounter, 2595 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 384 SdHoareTripleChecker+Valid, 2704 SdHoareTripleChecker+Invalid, 859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 603 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 21:07:59,016 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [384 Valid, 2704 Invalid, 859 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 242 Invalid, 0 Unknown, 603 Unchecked, 0.3s Time] [2022-11-02 21:07:59,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2022-11-02 21:07:59,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 102. [2022-11-02 21:07:59,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 101 states have (on average 1.2673267326732673) internal successors, (128), 101 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:59,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 128 transitions. [2022-11-02 21:07:59,025 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 128 transitions. Word has length 30 [2022-11-02 21:07:59,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:07:59,025 INFO L495 AbstractCegarLoop]: Abstraction has 102 states and 128 transitions. [2022-11-02 21:07:59,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 1.6111111111111112) internal successors, (58), 36 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:59,025 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 128 transitions. [2022-11-02 21:07:59,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-02 21:07:59,026 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:07:59,026 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] [2022-11-02 21:07:59,037 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070c5a46-23b7-4ffd-82b1-0aae86aa5141/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2022-11-02 21:07:59,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070c5a46-23b7-4ffd-82b1-0aae86aa5141/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:07:59,232 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:07:59,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:07:59,233 INFO L85 PathProgramCache]: Analyzing trace with hash -1660732479, now seen corresponding path program 1 times [2022-11-02 21:07:59,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:07:59,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1894686190] [2022-11-02 21:07:59,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:07:59,233 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:07:59,233 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070c5a46-23b7-4ffd-82b1-0aae86aa5141/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:07:59,234 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070c5a46-23b7-4ffd-82b1-0aae86aa5141/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:07:59,235 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070c5a46-23b7-4ffd-82b1-0aae86aa5141/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-11-02 21:07:59,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:59,354 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 47 conjunts are in the unsatisfiable core [2022-11-02 21:07:59,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:08:00,107 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 21:08:00,107 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:08:03,929 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 21:08:03,929 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:08:03,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1894686190] [2022-11-02 21:08:03,929 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1894686190] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:08:03,929 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:08:03,929 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 36 [2022-11-02 21:08:03,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074865026] [2022-11-02 21:08:03,930 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:08:03,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-11-02 21:08:03,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:08:03,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-11-02 21:08:03,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=1174, Unknown=0, NotChecked=0, Total=1260 [2022-11-02 21:08:03,938 INFO L87 Difference]: Start difference. First operand 102 states and 128 transitions. Second operand has 36 states, 36 states have (on average 1.6111111111111112) internal successors, (58), 36 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:06,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:08:06,032 INFO L93 Difference]: Finished difference Result 193 states and 243 transitions. [2022-11-02 21:08:06,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-02 21:08:06,034 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.6111111111111112) internal successors, (58), 36 states have internal predecessors, (58), 0 states have call successors, (0), 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 30 [2022-11-02 21:08:06,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:08:06,035 INFO L225 Difference]: With dead ends: 193 [2022-11-02 21:08:06,035 INFO L226 Difference]: Without dead ends: 191 [2022-11-02 21:08:06,037 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 454 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=485, Invalid=3297, Unknown=0, NotChecked=0, Total=3782 [2022-11-02 21:08:06,038 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 406 mSDsluCounter, 3241 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 406 SdHoareTripleChecker+Valid, 3393 SdHoareTripleChecker+Invalid, 1055 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 906 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:08:06,038 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [406 Valid, 3393 Invalid, 1055 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 142 Invalid, 0 Unknown, 906 Unchecked, 0.2s Time] [2022-11-02 21:08:06,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2022-11-02 21:08:06,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 98. [2022-11-02 21:08:06,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 97 states have (on average 1.268041237113402) internal successors, (123), 97 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:06,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 123 transitions. [2022-11-02 21:08:06,048 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 123 transitions. Word has length 30 [2022-11-02 21:08:06,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:08:06,048 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 123 transitions. [2022-11-02 21:08:06,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 1.6111111111111112) internal successors, (58), 36 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:06,049 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 123 transitions. [2022-11-02 21:08:06,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-02 21:08:06,049 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:08:06,049 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] [2022-11-02 21:08:06,067 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070c5a46-23b7-4ffd-82b1-0aae86aa5141/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2022-11-02 21:08:06,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070c5a46-23b7-4ffd-82b1-0aae86aa5141/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:08:06,262 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:08:06,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:08:06,262 INFO L85 PathProgramCache]: Analyzing trace with hash 908591817, now seen corresponding path program 1 times [2022-11-02 21:08:06,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:08:06,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [422514808] [2022-11-02 21:08:06,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:08:06,263 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:08:06,264 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070c5a46-23b7-4ffd-82b1-0aae86aa5141/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:08:06,264 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070c5a46-23b7-4ffd-82b1-0aae86aa5141/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:08:06,267 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070c5a46-23b7-4ffd-82b1-0aae86aa5141/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-11-02 21:08:06,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:06,367 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 53 conjunts are in the unsatisfiable core [2022-11-02 21:08:06,369 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:08:18,614 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 21:08:18,614 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:08:50,271 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 21:08:50,271 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:08:50,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [422514808] [2022-11-02 21:08:50,272 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [422514808] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:08:50,272 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:08:50,272 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 36 [2022-11-02 21:08:50,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060269552] [2022-11-02 21:08:50,272 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:08:50,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-11-02 21:08:50,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:08:50,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-11-02 21:08:50,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=1156, Unknown=18, NotChecked=0, Total=1260 [2022-11-02 21:08:50,274 INFO L87 Difference]: Start difference. First operand 98 states and 123 transitions. Second operand has 36 states, 36 states have (on average 1.6111111111111112) internal successors, (58), 36 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:52,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:08:52,640 INFO L93 Difference]: Finished difference Result 195 states and 243 transitions. [2022-11-02 21:08:52,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-02 21:08:52,641 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.6111111111111112) internal successors, (58), 36 states have internal predecessors, (58), 0 states have call successors, (0), 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 30 [2022-11-02 21:08:52,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:08:52,644 INFO L225 Difference]: With dead ends: 195 [2022-11-02 21:08:52,645 INFO L226 Difference]: Without dead ends: 193 [2022-11-02 21:08:52,645 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 45.4s TimeCoverageRelationStatistics Valid=136, Invalid=1568, Unknown=18, NotChecked=0, Total=1722 [2022-11-02 21:08:52,647 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 245 mSDsluCounter, 2800 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 2920 SdHoareTripleChecker+Invalid, 402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 329 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:08:52,647 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [245 Valid, 2920 Invalid, 402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 69 Invalid, 0 Unknown, 329 Unchecked, 0.1s Time] [2022-11-02 21:08:52,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2022-11-02 21:08:52,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 112. [2022-11-02 21:08:52,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 111 states have (on average 1.2702702702702702) internal successors, (141), 111 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:52,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 141 transitions. [2022-11-02 21:08:52,658 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 141 transitions. Word has length 30 [2022-11-02 21:08:52,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:08:52,658 INFO L495 AbstractCegarLoop]: Abstraction has 112 states and 141 transitions. [2022-11-02 21:08:52,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 1.6111111111111112) internal successors, (58), 36 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:52,658 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 141 transitions. [2022-11-02 21:08:52,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-02 21:08:52,659 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:08:52,659 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] [2022-11-02 21:08:52,676 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070c5a46-23b7-4ffd-82b1-0aae86aa5141/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2022-11-02 21:08:52,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070c5a46-23b7-4ffd-82b1-0aae86aa5141/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:08:52,873 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:08:52,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:08:52,873 INFO L85 PathProgramCache]: Analyzing trace with hash -1546473915, now seen corresponding path program 1 times [2022-11-02 21:08:52,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:08:52,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [440683885] [2022-11-02 21:08:52,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:08:52,874 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:08:52,874 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070c5a46-23b7-4ffd-82b1-0aae86aa5141/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:08:52,875 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070c5a46-23b7-4ffd-82b1-0aae86aa5141/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:08:52,876 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070c5a46-23b7-4ffd-82b1-0aae86aa5141/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-11-02 21:08:52,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:52,976 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 45 conjunts are in the unsatisfiable core [2022-11-02 21:08:52,978 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:08:53,611 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 21:08:53,611 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:08:56,410 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 21:08:56,410 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:08:56,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [440683885] [2022-11-02 21:08:56,411 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [440683885] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:08:56,411 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:08:56,411 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 36 [2022-11-02 21:08:56,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369805138] [2022-11-02 21:08:56,411 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:08:56,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-11-02 21:08:56,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:08:56,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-11-02 21:08:56,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=1174, Unknown=0, NotChecked=0, Total=1260 [2022-11-02 21:08:56,413 INFO L87 Difference]: Start difference. First operand 112 states and 141 transitions. Second operand has 36 states, 36 states have (on average 1.6111111111111112) internal successors, (58), 36 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:59,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:08:59,289 INFO L93 Difference]: Finished difference Result 245 states and 313 transitions. [2022-11-02 21:08:59,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-11-02 21:08:59,289 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.6111111111111112) internal successors, (58), 36 states have internal predecessors, (58), 0 states have call successors, (0), 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 30 [2022-11-02 21:08:59,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:08:59,290 INFO L225 Difference]: With dead ends: 245 [2022-11-02 21:08:59,291 INFO L226 Difference]: Without dead ends: 243 [2022-11-02 21:08:59,292 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 830 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=732, Invalid=4524, Unknown=0, NotChecked=0, Total=5256 [2022-11-02 21:08:59,293 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 446 mSDsluCounter, 3695 mSDsCounter, 0 mSdLazyCounter, 332 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 446 SdHoareTripleChecker+Valid, 3891 SdHoareTripleChecker+Invalid, 1006 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 665 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 21:08:59,293 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [446 Valid, 3891 Invalid, 1006 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 332 Invalid, 0 Unknown, 665 Unchecked, 0.4s Time] [2022-11-02 21:08:59,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2022-11-02 21:08:59,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 106. [2022-11-02 21:08:59,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 105 states have (on average 1.2666666666666666) internal successors, (133), 105 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:59,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 133 transitions. [2022-11-02 21:08:59,304 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 133 transitions. Word has length 30 [2022-11-02 21:08:59,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:08:59,304 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 133 transitions. [2022-11-02 21:08:59,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 1.6111111111111112) internal successors, (58), 36 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:59,305 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 133 transitions. [2022-11-02 21:08:59,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-02 21:08:59,305 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:08:59,305 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] [2022-11-02 21:08:59,318 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070c5a46-23b7-4ffd-82b1-0aae86aa5141/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2022-11-02 21:08:59,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070c5a46-23b7-4ffd-82b1-0aae86aa5141/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:08:59,512 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:08:59,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:08:59,513 INFO L85 PathProgramCache]: Analyzing trace with hash -1031070271, now seen corresponding path program 1 times [2022-11-02 21:08:59,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:08:59,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1236796824] [2022-11-02 21:08:59,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:08:59,513 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:08:59,514 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070c5a46-23b7-4ffd-82b1-0aae86aa5141/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:08:59,514 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070c5a46-23b7-4ffd-82b1-0aae86aa5141/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:08:59,515 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070c5a46-23b7-4ffd-82b1-0aae86aa5141/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2022-11-02 21:08:59,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:59,616 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 49 conjunts are in the unsatisfiable core [2022-11-02 21:08:59,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:09:00,640 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 21:09:00,640 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:09:04,092 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 21:09:04,092 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:09:04,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1236796824] [2022-11-02 21:09:04,093 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1236796824] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:09:04,093 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:09:04,093 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 36 [2022-11-02 21:09:04,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694263325] [2022-11-02 21:09:04,093 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:09:04,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-11-02 21:09:04,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:09:04,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-11-02 21:09:04,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=1174, Unknown=0, NotChecked=0, Total=1260 [2022-11-02 21:09:04,094 INFO L87 Difference]: Start difference. First operand 106 states and 133 transitions. Second operand has 36 states, 36 states have (on average 1.6111111111111112) internal successors, (58), 36 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:08,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:09:08,230 INFO L93 Difference]: Finished difference Result 178 states and 223 transitions. [2022-11-02 21:09:08,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-02 21:09:08,231 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.6111111111111112) internal successors, (58), 36 states have internal predecessors, (58), 0 states have call successors, (0), 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 30 [2022-11-02 21:09:08,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:09:08,232 INFO L225 Difference]: With dead ends: 178 [2022-11-02 21:09:08,232 INFO L226 Difference]: Without dead ends: 176 [2022-11-02 21:09:08,233 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 287 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=303, Invalid=2667, Unknown=0, NotChecked=0, Total=2970 [2022-11-02 21:09:08,233 INFO L413 NwaCegarLoop]: 103 mSDtfsCounter, 271 mSDsluCounter, 2090 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 271 SdHoareTripleChecker+Valid, 2193 SdHoareTripleChecker+Invalid, 635 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 591 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:09:08,234 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [271 Valid, 2193 Invalid, 635 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 42 Invalid, 0 Unknown, 591 Unchecked, 0.1s Time] [2022-11-02 21:09:08,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2022-11-02 21:09:08,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 116. [2022-11-02 21:09:08,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 115 states have (on average 1.2695652173913043) internal successors, (146), 115 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:08,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 146 transitions. [2022-11-02 21:09:08,245 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 146 transitions. Word has length 30 [2022-11-02 21:09:08,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:09:08,245 INFO L495 AbstractCegarLoop]: Abstraction has 116 states and 146 transitions. [2022-11-02 21:09:08,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 1.6111111111111112) internal successors, (58), 36 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:08,246 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 146 transitions. [2022-11-02 21:09:08,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-02 21:09:08,246 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:09:08,246 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] [2022-11-02 21:09:08,263 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070c5a46-23b7-4ffd-82b1-0aae86aa5141/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (28)] Ended with exit code 0 [2022-11-02 21:09:08,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070c5a46-23b7-4ffd-82b1-0aae86aa5141/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:09:08,459 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:09:08,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:09:08,459 INFO L85 PathProgramCache]: Analyzing trace with hash 808831293, now seen corresponding path program 1 times [2022-11-02 21:09:08,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:09:08,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1481836558] [2022-11-02 21:09:08,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:09:08,460 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:09:08,460 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070c5a46-23b7-4ffd-82b1-0aae86aa5141/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:09:08,461 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070c5a46-23b7-4ffd-82b1-0aae86aa5141/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:09:08,462 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070c5a46-23b7-4ffd-82b1-0aae86aa5141/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2022-11-02 21:09:08,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:08,565 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 51 conjunts are in the unsatisfiable core [2022-11-02 21:09:08,567 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:09:09,590 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 21:09:09,590 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:09:14,902 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:09:14,902 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:09:14,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1481836558] [2022-11-02 21:09:14,902 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1481836558] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:09:14,902 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:09:14,902 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 36 [2022-11-02 21:09:14,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926580342] [2022-11-02 21:09:14,903 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:09:14,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-11-02 21:09:14,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:09:14,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-11-02 21:09:14,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=1174, Unknown=0, NotChecked=0, Total=1260 [2022-11-02 21:09:14,904 INFO L87 Difference]: Start difference. First operand 116 states and 146 transitions. Second operand has 36 states, 36 states have (on average 1.6111111111111112) internal successors, (58), 36 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:17,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:09:17,049 INFO L93 Difference]: Finished difference Result 182 states and 228 transitions. [2022-11-02 21:09:17,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-02 21:09:17,049 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.6111111111111112) internal successors, (58), 36 states have internal predecessors, (58), 0 states have call successors, (0), 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 30 [2022-11-02 21:09:17,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:09:17,050 INFO L225 Difference]: With dead ends: 182 [2022-11-02 21:09:17,050 INFO L226 Difference]: Without dead ends: 180 [2022-11-02 21:09:17,051 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 307 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=297, Invalid=2783, Unknown=0, NotChecked=0, Total=3080 [2022-11-02 21:09:17,052 INFO L413 NwaCegarLoop]: 104 mSDtfsCounter, 252 mSDsluCounter, 2120 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 252 SdHoareTripleChecker+Valid, 2224 SdHoareTripleChecker+Invalid, 497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 460 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:09:17,052 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [252 Valid, 2224 Invalid, 497 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 33 Invalid, 0 Unknown, 460 Unchecked, 0.1s Time] [2022-11-02 21:09:17,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2022-11-02 21:09:17,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 112. [2022-11-02 21:09:17,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 111 states have (on average 1.2702702702702702) internal successors, (141), 111 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:17,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 141 transitions. [2022-11-02 21:09:17,063 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 141 transitions. Word has length 30 [2022-11-02 21:09:17,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:09:17,063 INFO L495 AbstractCegarLoop]: Abstraction has 112 states and 141 transitions. [2022-11-02 21:09:17,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 1.6111111111111112) internal successors, (58), 36 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:17,063 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 141 transitions. [2022-11-02 21:09:17,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-02 21:09:17,064 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:09:17,064 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] [2022-11-02 21:09:17,078 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070c5a46-23b7-4ffd-82b1-0aae86aa5141/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (29)] Ended with exit code 0 [2022-11-02 21:09:17,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070c5a46-23b7-4ffd-82b1-0aae86aa5141/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:09:17,264 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:09:17,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:09:17,265 INFO L85 PathProgramCache]: Analyzing trace with hash -916811707, now seen corresponding path program 1 times [2022-11-02 21:09:17,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:09:17,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1233668660] [2022-11-02 21:09:17,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:09:17,265 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:09:17,265 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070c5a46-23b7-4ffd-82b1-0aae86aa5141/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:09:17,266 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070c5a46-23b7-4ffd-82b1-0aae86aa5141/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:09:17,267 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_070c5a46-23b7-4ffd-82b1-0aae86aa5141/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2022-11-02 21:09:17,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:17,366 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 50 conjunts are in the unsatisfiable core [2022-11-02 21:09:17,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:09:18,544 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 21:09:18,544 INFO L328 TraceCheckSpWp]: Computing backward predicates...