./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.krebs.2.prop1-func-interl.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2dac4c0-b55c-4c5b-b944-c68694f9d51f/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2dac4c0-b55c-4c5b-b944-c68694f9d51f/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_d2dac4c0-b55c-4c5b-b944-c68694f9d51f/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2dac4c0-b55c-4c5b-b944-c68694f9d51f/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.krebs.2.prop1-func-interl.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2dac4c0-b55c-4c5b-b944-c68694f9d51f/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_d2dac4c0-b55c-4c5b-b944-c68694f9d51f/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 3a363747858f755dcf7765e023ce6efb7203891cba18b65d67294674b3e7662e --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-02 20:52:37,519 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:52:37,522 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:52:37,565 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:52:37,570 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:52:37,571 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:52:37,575 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:52:37,582 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:52:37,588 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:52:37,589 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:52:37,591 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:52:37,593 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:52:37,594 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:52:37,598 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:52:37,599 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:52:37,602 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:52:37,605 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:52:37,612 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:52:37,614 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:52:37,616 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:52:37,617 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:52:37,625 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:52:37,626 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:52:37,627 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:52:37,630 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:52:37,631 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:52:37,631 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:52:37,632 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:52:37,632 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:52:37,633 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:52:37,634 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:52:37,635 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:52:37,635 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:52:37,636 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:52:37,637 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:52:37,638 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:52:37,638 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:52:37,639 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:52:37,639 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:52:37,640 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:52:37,641 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:52:37,642 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2dac4c0-b55c-4c5b-b944-c68694f9d51f/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-02 20:52:37,662 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:52:37,663 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:52:37,663 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:52:37,664 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:52:37,664 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:52:37,664 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:52:37,665 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:52:37,665 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:52:37,666 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:52:37,666 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:52:37,666 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:52:37,666 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:52:37,667 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:52:37,667 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:52:37,667 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:52:37,667 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:52:37,668 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:52:37,668 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:52:37,668 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:52:37,668 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:52:37,669 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:52:37,669 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:52:37,669 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:52:37,669 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:52:37,669 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:52:37,670 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:52:37,670 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:52:37,670 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:52:37,670 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:52:37,671 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:52:37,671 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_d2dac4c0-b55c-4c5b-b944-c68694f9d51f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2dac4c0-b55c-4c5b-b944-c68694f9d51f/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3a363747858f755dcf7765e023ce6efb7203891cba18b65d67294674b3e7662e [2022-11-02 20:52:37,979 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:52:38,019 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:52:38,023 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:52:38,025 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:52:38,026 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:52:38,027 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2dac4c0-b55c-4c5b-b944-c68694f9d51f/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.krebs.2.prop1-func-interl.c [2022-11-02 20:52:38,103 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2dac4c0-b55c-4c5b-b944-c68694f9d51f/bin/uautomizer-Dbtcem3rbc/data/edac69443/d86e6b7372c84fd484488bef8c4f9b2e/FLAG71e4cfc94 [2022-11-02 20:52:38,784 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:52:38,785 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2dac4c0-b55c-4c5b-b944-c68694f9d51f/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.krebs.2.prop1-func-interl.c [2022-11-02 20:52:38,799 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2dac4c0-b55c-4c5b-b944-c68694f9d51f/bin/uautomizer-Dbtcem3rbc/data/edac69443/d86e6b7372c84fd484488bef8c4f9b2e/FLAG71e4cfc94 [2022-11-02 20:52:39,015 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2dac4c0-b55c-4c5b-b944-c68694f9d51f/bin/uautomizer-Dbtcem3rbc/data/edac69443/d86e6b7372c84fd484488bef8c4f9b2e [2022-11-02 20:52:39,018 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:52:39,020 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:52:39,028 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:52:39,028 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:52:39,032 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:52:39,033 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:52:39" (1/1) ... [2022-11-02 20:52:39,036 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24c0228f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:52:39, skipping insertion in model container [2022-11-02 20:52:39,036 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:52:39" (1/1) ... [2022-11-02 20:52:39,044 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:52:39,145 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:52:39,347 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_d2dac4c0-b55c-4c5b-b944-c68694f9d51f/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.krebs.2.prop1-func-interl.c[1014,1027] [2022-11-02 20:52:39,667 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:52:39,670 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:52:39,681 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_d2dac4c0-b55c-4c5b-b944-c68694f9d51f/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.krebs.2.prop1-func-interl.c[1014,1027] [2022-11-02 20:52:39,985 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:52:40,000 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:52:40,000 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:52:40 WrapperNode [2022-11-02 20:52:40,000 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:52:40,002 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:52:40,002 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:52:40,002 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:52:40,011 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:52:40" (1/1) ... [2022-11-02 20:52:40,056 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:52:40" (1/1) ... [2022-11-02 20:52:40,307 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1662 [2022-11-02 20:52:40,308 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:52:40,309 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:52:40,309 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:52:40,309 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:52:40,318 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:52:40" (1/1) ... [2022-11-02 20:52:40,319 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:52:40" (1/1) ... [2022-11-02 20:52:40,365 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:52:40" (1/1) ... [2022-11-02 20:52:40,365 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:52:40" (1/1) ... [2022-11-02 20:52:40,472 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:52:40" (1/1) ... [2022-11-02 20:52:40,479 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:52:40" (1/1) ... [2022-11-02 20:52:40,500 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:52:40" (1/1) ... [2022-11-02 20:52:40,515 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:52:40" (1/1) ... [2022-11-02 20:52:40,630 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:52:40,631 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:52:40,631 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:52:40,631 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:52:40,632 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:52:40" (1/1) ... [2022-11-02 20:52:40,640 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:52:40,656 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2dac4c0-b55c-4c5b-b944-c68694f9d51f/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:52:40,677 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2dac4c0-b55c-4c5b-b944-c68694f9d51f/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:52:40,707 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2dac4c0-b55c-4c5b-b944-c68694f9d51f/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:52:40,726 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:52:40,726 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:52:41,139 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:52:41,141 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:54:05,330 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:54:05,338 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:54:05,339 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-02 20:54:05,341 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:54:05 BoogieIcfgContainer [2022-11-02 20:54:05,341 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:54:05,343 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:54:05,344 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:54:05,348 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:54:05,348 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:52:39" (1/3) ... [2022-11-02 20:54:05,349 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76468614 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:54:05, skipping insertion in model container [2022-11-02 20:54:05,349 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:52:40" (2/3) ... [2022-11-02 20:54:05,349 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76468614 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:54:05, skipping insertion in model container [2022-11-02 20:54:05,350 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:54:05" (3/3) ... [2022-11-02 20:54:05,351 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.krebs.2.prop1-func-interl.c [2022-11-02 20:54:05,371 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:54:05,371 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 20:54:05,423 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:54:05,430 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;@3c5016e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:54:05,430 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 20:54:05,435 INFO L276 IsEmpty]: Start isEmpty. Operand has 101 states, 99 states have (on average 1.494949494949495) internal successors, (148), 100 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:54:05,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-02 20:54:05,442 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:54:05,443 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-02 20:54:05,443 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:54:05,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:54:05,454 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-11-02 20:54:05,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:54:05,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158087351] [2022-11-02 20:54:05,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:54:05,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:54:05,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:54:06,000 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:54:06,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:54:06,281 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:54:06,283 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-02 20:54:06,284 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-02 20:54:06,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:54:06,291 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-02 20:54:06,295 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-02 20:54:06,347 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-02 20:54:06,371 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.11 08:54:06 BoogieIcfgContainer [2022-11-02 20:54:06,371 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-02 20:54:06,374 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-02 20:54:06,374 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-02 20:54:06,374 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-02 20:54:06,375 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:54:05" (3/4) ... [2022-11-02 20:54:06,378 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-02 20:54:06,379 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-02 20:54:06,380 INFO L158 Benchmark]: Toolchain (without parser) took 87360.01ms. Allocated memory was 98.6MB in the beginning and 524.3MB in the end (delta: 425.7MB). Free memory was 56.3MB in the beginning and 232.3MB in the end (delta: -175.9MB). Peak memory consumption was 250.4MB. Max. memory is 16.1GB. [2022-11-02 20:54:06,381 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 98.6MB. Free memory is still 74.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 20:54:06,382 INFO L158 Benchmark]: CACSL2BoogieTranslator took 973.28ms. Allocated memory was 98.6MB in the beginning and 125.8MB in the end (delta: 27.3MB). Free memory was 56.1MB in the beginning and 88.5MB in the end (delta: -32.4MB). Peak memory consumption was 23.6MB. Max. memory is 16.1GB. [2022-11-02 20:54:06,383 INFO L158 Benchmark]: Boogie Procedure Inliner took 306.11ms. Allocated memory is still 125.8MB. Free memory was 88.5MB in the beginning and 74.4MB in the end (delta: 14.2MB). Peak memory consumption was 48.2MB. Max. memory is 16.1GB. [2022-11-02 20:54:06,388 INFO L158 Benchmark]: Boogie Preprocessor took 321.55ms. Allocated memory is still 125.8MB. Free memory was 74.4MB in the beginning and 66.8MB in the end (delta: 7.5MB). Peak memory consumption was 24.6MB. Max. memory is 16.1GB. [2022-11-02 20:54:06,390 INFO L158 Benchmark]: RCFGBuilder took 84710.60ms. Allocated memory was 125.8MB in the beginning and 524.3MB in the end (delta: 398.5MB). Free memory was 66.8MB in the beginning and 294.1MB in the end (delta: -227.3MB). Peak memory consumption was 316.3MB. Max. memory is 16.1GB. [2022-11-02 20:54:06,391 INFO L158 Benchmark]: TraceAbstraction took 1028.17ms. Allocated memory is still 524.3MB. Free memory was 293.1MB in the beginning and 232.3MB in the end (delta: 60.8MB). Peak memory consumption was 60.8MB. Max. memory is 16.1GB. [2022-11-02 20:54:06,392 INFO L158 Benchmark]: Witness Printer took 4.94ms. Allocated memory is still 524.3MB. Free memory was 232.3MB in the beginning and 232.3MB in the end (delta: 2.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-02 20:54:06,401 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 98.6MB. Free memory is still 74.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 973.28ms. Allocated memory was 98.6MB in the beginning and 125.8MB in the end (delta: 27.3MB). Free memory was 56.1MB in the beginning and 88.5MB in the end (delta: -32.4MB). Peak memory consumption was 23.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 306.11ms. Allocated memory is still 125.8MB. Free memory was 88.5MB in the beginning and 74.4MB in the end (delta: 14.2MB). Peak memory consumption was 48.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 321.55ms. Allocated memory is still 125.8MB. Free memory was 74.4MB in the beginning and 66.8MB in the end (delta: 7.5MB). Peak memory consumption was 24.6MB. Max. memory is 16.1GB. * RCFGBuilder took 84710.60ms. Allocated memory was 125.8MB in the beginning and 524.3MB in the end (delta: 398.5MB). Free memory was 66.8MB in the beginning and 294.1MB in the end (delta: -227.3MB). Peak memory consumption was 316.3MB. Max. memory is 16.1GB. * TraceAbstraction took 1028.17ms. Allocated memory is still 524.3MB. Free memory was 293.1MB in the beginning and 232.3MB in the end (delta: 60.8MB). Peak memory consumption was 60.8MB. Max. memory is 16.1GB. * Witness Printer took 4.94ms. Allocated memory is still 524.3MB. Free memory was 232.3MB in the beginning and 232.3MB in the end (delta: 2.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 20]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseComplement at line 211, overapproximation of bitwiseOr at line 206, overapproximation of bitwiseAnd at line 173. Possible FailurePath: [L25] const SORT_1 mask_SORT_1 = (SORT_1)-1 >> (sizeof(SORT_1) * 8 - 1); [L26] const SORT_1 msb_SORT_1 = (SORT_1)1 << (1 - 1); [L28] const SORT_2 mask_SORT_2 = (SORT_2)-1 >> (sizeof(SORT_2) * 8 - 8); [L29] const SORT_2 msb_SORT_2 = (SORT_2)1 << (8 - 1); [L31] const SORT_3 mask_SORT_3 = (SORT_3)-1 >> (sizeof(SORT_3) * 8 - 24); [L32] const SORT_3 msb_SORT_3 = (SORT_3)1 << (24 - 1); [L34] const SORT_4 mask_SORT_4 = (SORT_4)-1 >> (sizeof(SORT_4) * 8 - 32); [L35] const SORT_4 msb_SORT_4 = (SORT_4)1 << (32 - 1); [L37] const SORT_2 var_5 = 0; [L38] const SORT_1 var_30 = 0; [L39] const SORT_3 var_75 = 0; [L40] const SORT_4 var_77 = 20; [L41] const SORT_2 var_81 = 3; [L42] const SORT_4 var_85 = 1; [L43] const SORT_2 var_91 = 4; [L44] const SORT_4 var_93 = 2; [L45] const SORT_2 var_117 = 12; [L46] const SORT_2 var_140 = 2; [L47] const SORT_2 var_181 = 15; [L48] const SORT_2 var_198 = 10; [L50] SORT_1 input_82; [L51] SORT_1 input_92; [L52] SORT_1 input_98; [L53] SORT_1 input_122; [L54] SORT_1 input_125; [L55] SORT_1 input_126; [L56] SORT_1 input_127; [L57] SORT_1 input_128; [L58] SORT_1 input_147; [L59] SORT_1 input_148; [L60] SORT_1 input_170; [L61] SORT_1 input_174; [L62] SORT_1 input_217; [L63] SORT_1 input_220; [L64] SORT_1 input_241; [L65] SORT_1 input_262; [L67] SORT_2 state_6 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L68] SORT_2 state_8 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L69] SORT_2 state_10 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L70] SORT_2 state_12 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L71] SORT_2 state_14 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L72] SORT_2 state_16 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L73] SORT_2 state_18 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L74] SORT_2 state_20 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L75] SORT_2 state_22 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L76] SORT_2 state_24 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L77] SORT_2 state_26 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L78] SORT_2 state_28 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L79] SORT_1 state_31 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L80] SORT_1 state_33 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L81] SORT_1 state_35 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L82] SORT_1 state_37 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L83] SORT_1 state_39 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L84] SORT_1 state_41 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L85] SORT_1 state_43 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L86] SORT_1 state_45 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L87] SORT_1 state_47 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L88] SORT_1 state_49 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L89] SORT_1 state_51 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L90] SORT_1 state_53 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L91] SORT_1 state_55 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L92] SORT_1 state_57 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L93] SORT_1 state_59 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L94] SORT_1 state_61 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L95] SORT_1 state_63 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L96] SORT_1 state_65 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L97] SORT_1 state_67 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L98] SORT_1 state_69 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L99] SORT_1 state_71 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L100] SORT_1 state_73 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L102] SORT_2 init_7_arg_1 = var_5; [L103] state_6 = init_7_arg_1 [L104] SORT_2 init_9_arg_1 = var_5; [L105] state_8 = init_9_arg_1 [L106] SORT_2 init_11_arg_1 = var_5; [L107] state_10 = init_11_arg_1 [L108] SORT_2 init_13_arg_1 = var_5; [L109] state_12 = init_13_arg_1 [L110] SORT_2 init_15_arg_1 = var_5; [L111] state_14 = init_15_arg_1 [L112] SORT_2 init_17_arg_1 = var_5; [L113] state_16 = init_17_arg_1 [L114] SORT_2 init_19_arg_1 = var_5; [L115] state_18 = init_19_arg_1 [L116] SORT_2 init_21_arg_1 = var_5; [L117] state_20 = init_21_arg_1 [L118] SORT_2 init_23_arg_1 = var_5; [L119] state_22 = init_23_arg_1 [L120] SORT_2 init_25_arg_1 = var_5; [L121] state_24 = init_25_arg_1 [L122] SORT_2 init_27_arg_1 = var_5; [L123] state_26 = init_27_arg_1 [L124] SORT_2 init_29_arg_1 = var_5; [L125] state_28 = init_29_arg_1 [L126] SORT_1 init_32_arg_1 = var_30; [L127] state_31 = init_32_arg_1 [L128] SORT_1 init_34_arg_1 = var_30; [L129] state_33 = init_34_arg_1 [L130] SORT_1 init_36_arg_1 = var_30; [L131] state_35 = init_36_arg_1 [L132] SORT_1 init_38_arg_1 = var_30; [L133] state_37 = init_38_arg_1 [L134] SORT_1 init_40_arg_1 = var_30; [L135] state_39 = init_40_arg_1 [L136] SORT_1 init_42_arg_1 = var_30; [L137] state_41 = init_42_arg_1 [L138] SORT_1 init_44_arg_1 = var_30; [L139] state_43 = init_44_arg_1 [L140] SORT_1 init_46_arg_1 = var_30; [L141] state_45 = init_46_arg_1 [L142] SORT_1 init_48_arg_1 = var_30; [L143] state_47 = init_48_arg_1 [L144] SORT_1 init_50_arg_1 = var_30; [L145] state_49 = init_50_arg_1 [L146] SORT_1 init_52_arg_1 = var_30; [L147] state_51 = init_52_arg_1 [L148] SORT_1 init_54_arg_1 = var_30; [L149] state_53 = init_54_arg_1 [L150] SORT_1 init_56_arg_1 = var_30; [L151] state_55 = init_56_arg_1 [L152] SORT_1 init_58_arg_1 = var_30; [L153] state_57 = init_58_arg_1 [L154] SORT_1 init_60_arg_1 = var_30; [L155] state_59 = init_60_arg_1 [L156] SORT_1 init_62_arg_1 = var_30; [L157] state_61 = init_62_arg_1 [L158] SORT_1 init_64_arg_1 = var_30; [L159] state_63 = init_64_arg_1 [L160] SORT_1 init_66_arg_1 = var_30; [L161] state_65 = init_66_arg_1 [L162] SORT_1 init_68_arg_1 = var_30; [L163] state_67 = init_68_arg_1 [L164] SORT_1 init_70_arg_1 = var_30; [L165] state_69 = init_70_arg_1 [L166] SORT_1 init_72_arg_1 = var_30; [L167] state_71 = init_72_arg_1 [L168] SORT_1 init_74_arg_1 = var_30; [L169] state_73 = init_74_arg_1 VAL [init_11_arg_1=0, init_13_arg_1=0, init_15_arg_1=0, init_17_arg_1=0, init_19_arg_1=0, init_21_arg_1=0, init_23_arg_1=0, init_25_arg_1=0, init_27_arg_1=0, init_29_arg_1=0, init_32_arg_1=0, init_34_arg_1=0, init_36_arg_1=0, init_38_arg_1=0, init_40_arg_1=0, init_42_arg_1=0, init_44_arg_1=0, init_46_arg_1=0, init_48_arg_1=0, init_50_arg_1=0, init_52_arg_1=0, init_54_arg_1=0, init_56_arg_1=0, init_58_arg_1=0, init_60_arg_1=0, init_62_arg_1=0, init_64_arg_1=0, init_66_arg_1=0, init_68_arg_1=0, init_70_arg_1=0, init_72_arg_1=0, init_74_arg_1=0, init_7_arg_1=0, init_9_arg_1=0, mask_SORT_1=1, mask_SORT_2=255, mask_SORT_3=4294967295, mask_SORT_4=4294967295, msb_SORT_1=1, msb_SORT_2=128, msb_SORT_3=8388608, msb_SORT_4=2147483648, state_10=0, state_12=0, state_14=0, state_16=0, state_18=0, state_20=0, state_22=0, state_24=0, state_26=0, state_28=0, state_31=0, state_33=0, state_35=0, state_37=0, state_39=0, state_41=0, state_43=0, state_45=0, state_47=0, state_49=0, state_51=0, state_53=0, state_55=0, state_57=0, state_59=0, state_6=0, state_61=0, state_63=0, state_65=0, state_67=0, state_69=0, state_71=0, state_73=0, state_8=0, var_117=12, var_140=2, var_181=15, var_198=10, var_30=0, var_5=0, var_75=0, var_77=20, var_81=3, var_85=1, var_91=4, var_93=2] [L172] input_82 = __VERIFIER_nondet_uchar() [L173] input_82 = input_82 & mask_SORT_1 [L174] input_92 = __VERIFIER_nondet_uchar() [L175] input_92 = input_92 & mask_SORT_1 [L176] input_98 = __VERIFIER_nondet_uchar() [L177] input_98 = input_98 & mask_SORT_1 [L178] input_122 = __VERIFIER_nondet_uchar() [L179] input_122 = input_122 & mask_SORT_1 [L180] input_125 = __VERIFIER_nondet_uchar() [L181] input_125 = input_125 & mask_SORT_1 [L182] input_126 = __VERIFIER_nondet_uchar() [L183] input_126 = input_126 & mask_SORT_1 [L184] input_127 = __VERIFIER_nondet_uchar() [L185] input_127 = input_127 & mask_SORT_1 [L186] input_128 = __VERIFIER_nondet_uchar() [L187] input_128 = input_128 & mask_SORT_1 [L188] input_147 = __VERIFIER_nondet_uchar() [L189] input_147 = input_147 & mask_SORT_1 [L190] input_148 = __VERIFIER_nondet_uchar() [L191] input_148 = input_148 & mask_SORT_1 [L192] input_170 = __VERIFIER_nondet_uchar() [L193] input_170 = input_170 & mask_SORT_1 [L194] input_174 = __VERIFIER_nondet_uchar() [L195] input_174 = input_174 & mask_SORT_1 [L196] input_217 = __VERIFIER_nondet_uchar() [L197] input_217 = input_217 & mask_SORT_1 [L198] input_220 = __VERIFIER_nondet_uchar() [L199] input_220 = input_220 & mask_SORT_1 [L200] input_241 = __VERIFIER_nondet_uchar() [L201] input_262 = __VERIFIER_nondet_uchar() [L204] SORT_3 var_76_arg_0 = var_75; [L205] SORT_2 var_76_arg_1 = state_28; [L206] SORT_4 var_76 = ((SORT_4)var_76_arg_0 << 8) | var_76_arg_1; [L207] var_76 = var_76 & mask_SORT_4 [L208] SORT_4 var_78_arg_0 = var_76; [L209] SORT_4 var_78_arg_1 = var_77; [L210] SORT_1 var_78 = var_78_arg_0 <= var_78_arg_1; [L211] SORT_1 var_79_arg_0 = ~state_73; [L212] var_79_arg_0 = var_79_arg_0 & mask_SORT_1 [L213] SORT_1 var_79_arg_1 = ~var_78; [L214] var_79_arg_1 = var_79_arg_1 & mask_SORT_1 [L215] SORT_1 var_79 = var_79_arg_0 & var_79_arg_1; [L216] var_79 = var_79 & mask_SORT_1 [L217] SORT_1 bad_80_arg_0 = var_79; [L218] CALL __VERIFIER_assert(!(bad_80_arg_0)) [L20] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L20] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 101 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.9s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=101occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 5 NumberOfCodeBlocks, 5 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-02 20:54:06,471 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2dac4c0-b55c-4c5b-b944-c68694f9d51f/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2dac4c0-b55c-4c5b-b944-c68694f9d51f/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2dac4c0-b55c-4c5b-b944-c68694f9d51f/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_d2dac4c0-b55c-4c5b-b944-c68694f9d51f/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2dac4c0-b55c-4c5b-b944-c68694f9d51f/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.krebs.2.prop1-func-interl.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2dac4c0-b55c-4c5b-b944-c68694f9d51f/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_d2dac4c0-b55c-4c5b-b944-c68694f9d51f/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 3a363747858f755dcf7765e023ce6efb7203891cba18b65d67294674b3e7662e --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-02 20:54:08,833 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:54:08,835 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:54:08,892 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:54:08,892 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:54:08,898 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:54:08,901 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:54:08,908 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:54:08,913 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:54:08,915 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:54:08,917 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:54:08,919 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:54:08,920 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:54:08,926 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:54:08,928 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:54:08,930 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:54:08,931 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:54:08,933 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:54:08,936 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:54:08,942 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:54:08,947 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:54:08,949 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:54:08,950 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:54:08,952 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:54:08,958 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:54:08,958 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:54:08,959 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:54:08,961 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:54:08,961 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:54:08,962 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:54:08,963 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:54:08,963 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:54:08,966 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:54:08,966 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:54:08,967 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:54:08,968 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:54:08,969 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:54:08,969 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:54:08,969 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:54:08,971 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:54:08,972 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:54:08,973 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2dac4c0-b55c-4c5b-b944-c68694f9d51f/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-11-02 20:54:09,018 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:54:09,018 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:54:09,019 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:54:09,020 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:54:09,021 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:54:09,021 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:54:09,022 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:54:09,023 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:54:09,023 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:54:09,023 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:54:09,024 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:54:09,025 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:54:09,025 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:54:09,025 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:54:09,026 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-02 20:54:09,026 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-02 20:54:09,026 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-02 20:54:09,026 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:54:09,026 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:54:09,027 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:54:09,027 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:54:09,027 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:54:09,027 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:54:09,028 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:54:09,028 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:54:09,028 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:54:09,029 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:54:09,029 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-02 20:54:09,029 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-02 20:54:09,029 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:54:09,029 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:54:09,030 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:54:09,030 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-02 20:54:09,030 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_d2dac4c0-b55c-4c5b-b944-c68694f9d51f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2dac4c0-b55c-4c5b-b944-c68694f9d51f/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3a363747858f755dcf7765e023ce6efb7203891cba18b65d67294674b3e7662e [2022-11-02 20:54:09,395 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:54:09,417 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:54:09,420 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:54:09,421 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:54:09,422 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:54:09,424 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2dac4c0-b55c-4c5b-b944-c68694f9d51f/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.krebs.2.prop1-func-interl.c [2022-11-02 20:54:09,502 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2dac4c0-b55c-4c5b-b944-c68694f9d51f/bin/uautomizer-Dbtcem3rbc/data/690d66d09/0d40ab1af7554f22af9166655c11afe2/FLAG65b87e88b [2022-11-02 20:54:10,242 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:54:10,243 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2dac4c0-b55c-4c5b-b944-c68694f9d51f/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.krebs.2.prop1-func-interl.c [2022-11-02 20:54:10,280 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2dac4c0-b55c-4c5b-b944-c68694f9d51f/bin/uautomizer-Dbtcem3rbc/data/690d66d09/0d40ab1af7554f22af9166655c11afe2/FLAG65b87e88b [2022-11-02 20:54:10,482 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2dac4c0-b55c-4c5b-b944-c68694f9d51f/bin/uautomizer-Dbtcem3rbc/data/690d66d09/0d40ab1af7554f22af9166655c11afe2 [2022-11-02 20:54:10,485 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:54:10,486 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:54:10,487 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:54:10,488 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:54:10,494 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:54:10,496 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:54:10" (1/1) ... [2022-11-02 20:54:10,497 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7101b763 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:54:10, skipping insertion in model container [2022-11-02 20:54:10,497 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:54:10" (1/1) ... [2022-11-02 20:54:10,504 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:54:10,570 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:54:10,768 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_d2dac4c0-b55c-4c5b-b944-c68694f9d51f/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.krebs.2.prop1-func-interl.c[1014,1027] [2022-11-02 20:54:11,060 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:54:11,072 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:54:11,083 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_d2dac4c0-b55c-4c5b-b944-c68694f9d51f/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.krebs.2.prop1-func-interl.c[1014,1027] [2022-11-02 20:54:11,205 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:54:11,218 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:54:11,218 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:54:11 WrapperNode [2022-11-02 20:54:11,218 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:54:11,219 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:54:11,220 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:54:11,220 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:54:11,226 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:54:11" (1/1) ... [2022-11-02 20:54:11,265 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:54:11" (1/1) ... [2022-11-02 20:54:11,340 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1662 [2022-11-02 20:54:11,341 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:54:11,342 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:54:11,342 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:54:11,342 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:54:11,352 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:54:11" (1/1) ... [2022-11-02 20:54:11,352 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:54:11" (1/1) ... [2022-11-02 20:54:11,366 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:54:11" (1/1) ... [2022-11-02 20:54:11,366 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:54:11" (1/1) ... [2022-11-02 20:54:11,426 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:54:11" (1/1) ... [2022-11-02 20:54:11,434 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:54:11" (1/1) ... [2022-11-02 20:54:11,441 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:54:11" (1/1) ... [2022-11-02 20:54:11,448 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:54:11" (1/1) ... [2022-11-02 20:54:11,461 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:54:11,462 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:54:11,462 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:54:11,462 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:54:11,463 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:54:11" (1/1) ... [2022-11-02 20:54:11,486 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:54:11,499 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2dac4c0-b55c-4c5b-b944-c68694f9d51f/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:54:11,511 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2dac4c0-b55c-4c5b-b944-c68694f9d51f/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:54:11,570 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2dac4c0-b55c-4c5b-b944-c68694f9d51f/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:54:11,594 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:54:11,594 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:54:12,072 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:54:12,074 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:54:13,903 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:54:13,912 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:54:13,912 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-02 20:54:13,917 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:54:13 BoogieIcfgContainer [2022-11-02 20:54:13,917 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:54:13,920 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:54:13,921 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:54:13,924 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:54:13,924 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:54:10" (1/3) ... [2022-11-02 20:54:13,925 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79453221 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:54:13, skipping insertion in model container [2022-11-02 20:54:13,925 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:54:11" (2/3) ... [2022-11-02 20:54:13,925 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79453221 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:54:13, skipping insertion in model container [2022-11-02 20:54:13,925 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:54:13" (3/3) ... [2022-11-02 20:54:13,927 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.krebs.2.prop1-func-interl.c [2022-11-02 20:54:13,947 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:54:13,947 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 20:54:14,030 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:54:14,040 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;@76b89f4d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:54:14,040 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 20:54:14,045 INFO L276 IsEmpty]: Start isEmpty. Operand has 101 states, 99 states have (on average 1.494949494949495) internal successors, (148), 100 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:54:14,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-02 20:54:14,051 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:54:14,052 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-02 20:54:14,053 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:54:14,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:54:14,061 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-11-02 20:54:14,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:54:14,077 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [904416453] [2022-11-02 20:54:14,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:54:14,078 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:54:14,078 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2dac4c0-b55c-4c5b-b944-c68694f9d51f/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:54:14,086 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2dac4c0-b55c-4c5b-b944-c68694f9d51f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:54:14,119 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2dac4c0-b55c-4c5b-b944-c68694f9d51f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-02 20:54:14,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:54:14,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-02 20:54:14,496 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:54:14,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:54:14,700 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:54:14,701 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:54:14,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [904416453] [2022-11-02 20:54:14,702 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [904416453] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:54:14,703 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:54:14,703 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:54:14,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922184237] [2022-11-02 20:54:14,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:54:14,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:54:14,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:54:14,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:54:14,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:54:14,759 INFO L87 Difference]: Start difference. First operand has 101 states, 99 states have (on average 1.494949494949495) internal successors, (148), 100 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:54:15,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:54:15,146 INFO L93 Difference]: Finished difference Result 290 states and 435 transitions. [2022-11-02 20:54:15,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:54:15,161 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-02 20:54:15,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:54:15,171 INFO L225 Difference]: With dead ends: 290 [2022-11-02 20:54:15,171 INFO L226 Difference]: Without dead ends: 191 [2022-11-02 20:54:15,175 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:54:15,178 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 273 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 394 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:54:15,179 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [273 Valid, 394 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 20:54:15,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2022-11-02 20:54:15,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 99. [2022-11-02 20:54:15,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 98 states have (on average 1.469387755102041) internal successors, (144), 98 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:54:15,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 144 transitions. [2022-11-02 20:54:15,225 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 144 transitions. Word has length 5 [2022-11-02 20:54:15,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:54:15,225 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 144 transitions. [2022-11-02 20:54:15,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:54:15,226 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 144 transitions. [2022-11-02 20:54:15,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-02 20:54:15,229 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:54:15,229 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:54:15,247 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2dac4c0-b55c-4c5b-b944-c68694f9d51f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-02 20:54:15,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2dac4c0-b55c-4c5b-b944-c68694f9d51f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:54:15,442 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:54:15,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:54:15,443 INFO L85 PathProgramCache]: Analyzing trace with hash -1387976869, now seen corresponding path program 1 times [2022-11-02 20:54:15,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:54:15,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1382070254] [2022-11-02 20:54:15,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:54:15,447 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:54:15,447 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2dac4c0-b55c-4c5b-b944-c68694f9d51f/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:54:15,455 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2dac4c0-b55c-4c5b-b944-c68694f9d51f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:54:15,494 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2dac4c0-b55c-4c5b-b944-c68694f9d51f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-02 20:54:16,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:54:16,372 INFO L263 TraceCheckSpWp]: Trace formula consists of 1394 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 20:54:16,384 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:54:16,505 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:54:16,505 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:54:16,506 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:54:16,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1382070254] [2022-11-02 20:54:16,506 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1382070254] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:54:16,506 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:54:16,507 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:54:16,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125139476] [2022-11-02 20:54:16,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:54:16,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:54:16,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:54:16,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:54:16,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:54:16,510 INFO L87 Difference]: Start difference. First operand 99 states and 144 transitions. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:54:16,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:54:16,639 INFO L93 Difference]: Finished difference Result 198 states and 290 transitions. [2022-11-02 20:54:16,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:54:16,641 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2022-11-02 20:54:16,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:54:16,642 INFO L225 Difference]: With dead ends: 198 [2022-11-02 20:54:16,642 INFO L226 Difference]: Without dead ends: 103 [2022-11-02 20:54:16,643 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:54:16,644 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 2 mSDsluCounter, 526 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 662 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 28 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:54:16,645 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 662 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 28 Unchecked, 0.1s Time] [2022-11-02 20:54:16,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2022-11-02 20:54:16,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2022-11-02 20:54:16,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 102 states have (on average 1.4607843137254901) internal successors, (149), 102 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:54:16,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 149 transitions. [2022-11-02 20:54:16,653 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 149 transitions. Word has length 98 [2022-11-02 20:54:16,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:54:16,653 INFO L495 AbstractCegarLoop]: Abstraction has 103 states and 149 transitions. [2022-11-02 20:54:16,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:54:16,654 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 149 transitions. [2022-11-02 20:54:16,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-02 20:54:16,657 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:54:16,657 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:54:16,696 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2dac4c0-b55c-4c5b-b944-c68694f9d51f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-02 20:54:16,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2dac4c0-b55c-4c5b-b944-c68694f9d51f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:54:16,887 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:54:16,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:54:16,887 INFO L85 PathProgramCache]: Analyzing trace with hash 552605145, now seen corresponding path program 1 times [2022-11-02 20:54:16,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:54:16,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [78703325] [2022-11-02 20:54:16,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:54:16,889 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:54:16,889 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2dac4c0-b55c-4c5b-b944-c68694f9d51f/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:54:16,896 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2dac4c0-b55c-4c5b-b944-c68694f9d51f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:54:16,906 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2dac4c0-b55c-4c5b-b944-c68694f9d51f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-02 20:54:17,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:54:17,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 1394 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 20:54:17,697 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:54:17,945 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 20:54:17,945 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:54:17,945 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:54:17,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [78703325] [2022-11-02 20:54:17,947 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [78703325] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:54:17,951 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:54:17,951 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:54:17,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960651166] [2022-11-02 20:54:17,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:54:17,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:54:17,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:54:17,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:54:17,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:54:17,956 INFO L87 Difference]: Start difference. First operand 103 states and 149 transitions. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:54:18,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:54:18,115 INFO L93 Difference]: Finished difference Result 322 states and 472 transitions. [2022-11-02 20:54:18,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:54:18,116 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2022-11-02 20:54:18,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:54:18,117 INFO L225 Difference]: With dead ends: 322 [2022-11-02 20:54:18,118 INFO L226 Difference]: Without dead ends: 227 [2022-11-02 20:54:18,118 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:54:18,119 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 196 mSDsluCounter, 642 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 826 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 23 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:54:18,120 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [196 Valid, 826 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 23 Unchecked, 0.1s Time] [2022-11-02 20:54:18,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2022-11-02 20:54:18,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 133. [2022-11-02 20:54:18,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 132 states have (on average 1.4621212121212122) internal successors, (193), 132 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:54:18,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 193 transitions. [2022-11-02 20:54:18,135 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 193 transitions. Word has length 98 [2022-11-02 20:54:18,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:54:18,136 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 193 transitions. [2022-11-02 20:54:18,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:54:18,137 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 193 transitions. [2022-11-02 20:54:18,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-02 20:54:18,138 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:54:18,138 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:54:18,165 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2dac4c0-b55c-4c5b-b944-c68694f9d51f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-02 20:54:18,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2dac4c0-b55c-4c5b-b944-c68694f9d51f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:54:18,360 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:54:18,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:54:18,361 INFO L85 PathProgramCache]: Analyzing trace with hash 135208539, now seen corresponding path program 1 times [2022-11-02 20:54:18,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:54:18,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1112974609] [2022-11-02 20:54:18,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:54:18,363 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:54:18,363 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2dac4c0-b55c-4c5b-b944-c68694f9d51f/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:54:18,364 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2dac4c0-b55c-4c5b-b944-c68694f9d51f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:54:18,390 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2dac4c0-b55c-4c5b-b944-c68694f9d51f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-02 20:54:19,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:54:19,178 INFO L263 TraceCheckSpWp]: Trace formula consists of 1394 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 20:54:19,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:54:19,405 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 20:54:19,405 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:54:19,406 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:54:19,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1112974609] [2022-11-02 20:54:19,406 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1112974609] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:54:19,406 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:54:19,406 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:54:19,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941801027] [2022-11-02 20:54:19,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:54:19,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:54:19,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:54:19,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:54:19,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:54:19,408 INFO L87 Difference]: Start difference. First operand 133 states and 193 transitions. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:54:19,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:54:19,627 INFO L93 Difference]: Finished difference Result 382 states and 560 transitions. [2022-11-02 20:54:19,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 20:54:19,629 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2022-11-02 20:54:19,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:54:19,630 INFO L225 Difference]: With dead ends: 382 [2022-11-02 20:54:19,630 INFO L226 Difference]: Without dead ends: 287 [2022-11-02 20:54:19,631 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:54:19,632 INFO L413 NwaCegarLoop]: 210 mSDtfsCounter, 413 mSDsluCounter, 705 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 413 SdHoareTripleChecker+Valid, 915 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 24 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:54:19,633 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [413 Valid, 915 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 24 Unchecked, 0.2s Time] [2022-11-02 20:54:19,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2022-11-02 20:54:19,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 153. [2022-11-02 20:54:19,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 152 states have (on average 1.4605263157894737) internal successors, (222), 152 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:54:19,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 222 transitions. [2022-11-02 20:54:19,646 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 222 transitions. Word has length 98 [2022-11-02 20:54:19,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:54:19,647 INFO L495 AbstractCegarLoop]: Abstraction has 153 states and 222 transitions. [2022-11-02 20:54:19,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:54:19,647 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 222 transitions. [2022-11-02 20:54:19,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-02 20:54:19,649 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:54:19,649 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:54:19,679 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2dac4c0-b55c-4c5b-b944-c68694f9d51f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-02 20:54:19,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2dac4c0-b55c-4c5b-b944-c68694f9d51f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:54:19,871 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:54:19,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:54:19,872 INFO L85 PathProgramCache]: Analyzing trace with hash -762184739, now seen corresponding path program 1 times [2022-11-02 20:54:19,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:54:19,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1994710655] [2022-11-02 20:54:19,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:54:19,874 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:54:19,874 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2dac4c0-b55c-4c5b-b944-c68694f9d51f/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:54:19,875 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2dac4c0-b55c-4c5b-b944-c68694f9d51f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:54:19,876 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2dac4c0-b55c-4c5b-b944-c68694f9d51f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-02 20:54:20,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:54:20,693 INFO L263 TraceCheckSpWp]: Trace formula consists of 1394 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 20:54:20,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:54:20,959 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 20:54:20,960 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:54:20,960 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:54:20,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1994710655] [2022-11-02 20:54:20,960 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1994710655] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:54:20,961 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:54:20,961 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:54:20,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113136492] [2022-11-02 20:54:20,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:54:20,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:54:20,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:54:20,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:54:20,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:54:20,963 INFO L87 Difference]: Start difference. First operand 153 states and 222 transitions. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:54:21,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:54:21,169 INFO L93 Difference]: Finished difference Result 382 states and 559 transitions. [2022-11-02 20:54:21,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 20:54:21,170 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2022-11-02 20:54:21,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:54:21,172 INFO L225 Difference]: With dead ends: 382 [2022-11-02 20:54:21,172 INFO L226 Difference]: Without dead ends: 287 [2022-11-02 20:54:21,172 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:54:21,173 INFO L413 NwaCegarLoop]: 222 mSDtfsCounter, 391 mSDsluCounter, 804 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 391 SdHoareTripleChecker+Valid, 1026 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 37 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:54:21,174 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [391 Valid, 1026 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 37 Unchecked, 0.2s Time] [2022-11-02 20:54:21,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2022-11-02 20:54:21,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 161. [2022-11-02 20:54:21,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 160 states have (on average 1.45625) internal successors, (233), 160 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:54:21,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 233 transitions. [2022-11-02 20:54:21,183 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 233 transitions. Word has length 98 [2022-11-02 20:54:21,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:54:21,183 INFO L495 AbstractCegarLoop]: Abstraction has 161 states and 233 transitions. [2022-11-02 20:54:21,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:54:21,184 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 233 transitions. [2022-11-02 20:54:21,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-02 20:54:21,186 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:54:21,186 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:54:21,215 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2dac4c0-b55c-4c5b-b944-c68694f9d51f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-02 20:54:21,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2dac4c0-b55c-4c5b-b944-c68694f9d51f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:54:21,411 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:54:21,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:54:21,411 INFO L85 PathProgramCache]: Analyzing trace with hash -1606190241, now seen corresponding path program 1 times [2022-11-02 20:54:21,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:54:21,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [170452915] [2022-11-02 20:54:21,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:54:21,413 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:54:21,413 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2dac4c0-b55c-4c5b-b944-c68694f9d51f/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:54:21,414 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2dac4c0-b55c-4c5b-b944-c68694f9d51f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:54:21,417 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2dac4c0-b55c-4c5b-b944-c68694f9d51f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-02 20:54:22,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:54:22,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 1394 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 20:54:22,162 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:54:22,397 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 20:54:22,397 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:54:22,397 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:54:22,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [170452915] [2022-11-02 20:54:22,398 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [170452915] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:54:22,398 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:54:22,398 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:54:22,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751064510] [2022-11-02 20:54:22,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:54:22,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:54:22,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:54:22,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:54:22,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:54:22,400 INFO L87 Difference]: Start difference. First operand 161 states and 233 transitions. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:54:22,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:54:22,563 INFO L93 Difference]: Finished difference Result 448 states and 655 transitions. [2022-11-02 20:54:22,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 20:54:22,563 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2022-11-02 20:54:22,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:54:22,565 INFO L225 Difference]: With dead ends: 448 [2022-11-02 20:54:22,565 INFO L226 Difference]: Without dead ends: 353 [2022-11-02 20:54:22,566 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:54:22,567 INFO L413 NwaCegarLoop]: 231 mSDtfsCounter, 385 mSDsluCounter, 711 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 385 SdHoareTripleChecker+Valid, 942 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 17 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:54:22,567 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [385 Valid, 942 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 17 Unchecked, 0.1s Time] [2022-11-02 20:54:22,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2022-11-02 20:54:22,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 231. [2022-11-02 20:54:22,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 230 states have (on average 1.4565217391304348) internal successors, (335), 230 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:54:22,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 335 transitions. [2022-11-02 20:54:22,577 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 335 transitions. Word has length 98 [2022-11-02 20:54:22,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:54:22,577 INFO L495 AbstractCegarLoop]: Abstraction has 231 states and 335 transitions. [2022-11-02 20:54:22,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:54:22,578 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 335 transitions. [2022-11-02 20:54:22,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-02 20:54:22,579 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:54:22,580 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:54:22,602 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2dac4c0-b55c-4c5b-b944-c68694f9d51f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-02 20:54:22,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2dac4c0-b55c-4c5b-b944-c68694f9d51f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:54:22,794 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:54:22,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:54:22,795 INFO L85 PathProgramCache]: Analyzing trace with hash -904590367, now seen corresponding path program 1 times [2022-11-02 20:54:22,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:54:22,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1029267355] [2022-11-02 20:54:22,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:54:22,797 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:54:22,797 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2dac4c0-b55c-4c5b-b944-c68694f9d51f/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:54:22,800 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2dac4c0-b55c-4c5b-b944-c68694f9d51f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:54:22,803 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2dac4c0-b55c-4c5b-b944-c68694f9d51f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-02 20:54:23,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:54:23,534 INFO L263 TraceCheckSpWp]: Trace formula consists of 1394 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 20:54:23,542 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:54:23,889 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 20:54:23,889 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:54:23,889 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:54:23,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1029267355] [2022-11-02 20:54:23,890 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1029267355] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:54:23,890 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:54:23,890 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:54:23,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323173182] [2022-11-02 20:54:23,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:54:23,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:54:23,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:54:23,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:54:23,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:54:23,891 INFO L87 Difference]: Start difference. First operand 231 states and 335 transitions. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:54:24,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:54:24,011 INFO L93 Difference]: Finished difference Result 416 states and 605 transitions. [2022-11-02 20:54:24,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:54:24,012 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2022-11-02 20:54:24,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:54:24,014 INFO L225 Difference]: With dead ends: 416 [2022-11-02 20:54:24,014 INFO L226 Difference]: Without dead ends: 321 [2022-11-02 20:54:24,015 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:54:24,015 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 118 mSDsluCounter, 670 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 806 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 17 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:54:24,016 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 806 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 17 Unchecked, 0.1s Time] [2022-11-02 20:54:24,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2022-11-02 20:54:24,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 321. [2022-11-02 20:54:24,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 320 states have (on average 1.45) internal successors, (464), 320 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:54:24,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 464 transitions. [2022-11-02 20:54:24,025 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 464 transitions. Word has length 98 [2022-11-02 20:54:24,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:54:24,025 INFO L495 AbstractCegarLoop]: Abstraction has 321 states and 464 transitions. [2022-11-02 20:54:24,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:54:24,026 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 464 transitions. [2022-11-02 20:54:24,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-02 20:54:24,028 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:54:24,028 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:54:24,055 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2dac4c0-b55c-4c5b-b944-c68694f9d51f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-02 20:54:24,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2dac4c0-b55c-4c5b-b944-c68694f9d51f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:54:24,250 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:54:24,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:54:24,250 INFO L85 PathProgramCache]: Analyzing trace with hash 1467148895, now seen corresponding path program 1 times [2022-11-02 20:54:24,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:54:24,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [513251946] [2022-11-02 20:54:24,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:54:24,251 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:54:24,251 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2dac4c0-b55c-4c5b-b944-c68694f9d51f/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:54:24,252 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2dac4c0-b55c-4c5b-b944-c68694f9d51f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:54:24,253 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2dac4c0-b55c-4c5b-b944-c68694f9d51f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-02 20:54:24,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:54:25,009 INFO L263 TraceCheckSpWp]: Trace formula consists of 1394 conjuncts, 34 conjunts are in the unsatisfiable core [2022-11-02 20:54:25,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:54:26,513 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:54:26,514 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:54:30,400 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 20:54:30,401 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:54:30,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [513251946] [2022-11-02 20:54:30,401 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [513251946] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:54:30,401 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:54:30,401 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2022-11-02 20:54:30,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434979356] [2022-11-02 20:54:30,402 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:54:30,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 20:54:30,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:54:30,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 20:54:30,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2022-11-02 20:54:30,404 INFO L87 Difference]: Start difference. First operand 321 states and 464 transitions. Second operand has 18 states, 18 states have (on average 10.777777777777779) internal successors, (194), 18 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:54:30,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:54:30,484 INFO L93 Difference]: Finished difference Result 628 states and 910 transitions. [2022-11-02 20:54:30,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 20:54:30,485 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 10.777777777777779) internal successors, (194), 18 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2022-11-02 20:54:30,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:54:30,487 INFO L225 Difference]: With dead ends: 628 [2022-11-02 20:54:30,488 INFO L226 Difference]: Without dead ends: 626 [2022-11-02 20:54:30,488 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2022-11-02 20:54:30,489 INFO L413 NwaCegarLoop]: 137 mSDtfsCounter, 296 mSDsluCounter, 1505 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 1642 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 26 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:54:30,490 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [296 Valid, 1642 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 26 Unchecked, 0.0s Time] [2022-11-02 20:54:30,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 626 states. [2022-11-02 20:54:30,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 626 to 626. [2022-11-02 20:54:30,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 626 states, 625 states have (on average 1.4528) internal successors, (908), 625 states have internal predecessors, (908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:54:30,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 626 states to 626 states and 908 transitions. [2022-11-02 20:54:30,504 INFO L78 Accepts]: Start accepts. Automaton has 626 states and 908 transitions. Word has length 98 [2022-11-02 20:54:30,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:54:30,504 INFO L495 AbstractCegarLoop]: Abstraction has 626 states and 908 transitions. [2022-11-02 20:54:30,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 10.777777777777779) internal successors, (194), 18 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:54:30,505 INFO L276 IsEmpty]: Start isEmpty. Operand 626 states and 908 transitions. [2022-11-02 20:54:30,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-02 20:54:30,507 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:54:30,507 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:54:30,528 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2dac4c0-b55c-4c5b-b944-c68694f9d51f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-02 20:54:30,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2dac4c0-b55c-4c5b-b944-c68694f9d51f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:54:30,726 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:54:30,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:54:30,727 INFO L85 PathProgramCache]: Analyzing trace with hash 2147207265, now seen corresponding path program 1 times [2022-11-02 20:54:30,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:54:30,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [587027144] [2022-11-02 20:54:30,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:54:30,729 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:54:30,729 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2dac4c0-b55c-4c5b-b944-c68694f9d51f/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:54:30,730 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2dac4c0-b55c-4c5b-b944-c68694f9d51f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:54:30,772 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2dac4c0-b55c-4c5b-b944-c68694f9d51f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-02 20:54:31,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:54:31,501 INFO L263 TraceCheckSpWp]: Trace formula consists of 1394 conjuncts, 49 conjunts are in the unsatisfiable core [2022-11-02 20:54:31,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:54:33,350 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:54:33,350 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:54:44,136 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 20:54:44,137 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:54:44,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [587027144] [2022-11-02 20:54:44,137 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [587027144] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:54:44,144 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:54:44,144 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 22 [2022-11-02 20:54:44,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086755714] [2022-11-02 20:54:44,145 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:54:44,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-02 20:54:44,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:54:44,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-02 20:54:44,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=347, Unknown=3, NotChecked=0, Total=462 [2022-11-02 20:54:44,147 INFO L87 Difference]: Start difference. First operand 626 states and 908 transitions. Second operand has 22 states, 22 states have (on average 8.818181818181818) internal successors, (194), 22 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:54:44,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:54:44,366 INFO L93 Difference]: Finished difference Result 995 states and 1445 transitions. [2022-11-02 20:54:44,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-02 20:54:44,367 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 8.818181818181818) internal successors, (194), 22 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2022-11-02 20:54:44,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:54:44,372 INFO L225 Difference]: With dead ends: 995 [2022-11-02 20:54:44,372 INFO L226 Difference]: Without dead ends: 993 [2022-11-02 20:54:44,373 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 9.5s TimeCoverageRelationStatistics Valid=120, Invalid=383, Unknown=3, NotChecked=0, Total=506 [2022-11-02 20:54:44,376 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 409 mSDsluCounter, 1621 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 409 SdHoareTripleChecker+Valid, 1759 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 33 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:54:44,376 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [409 Valid, 1759 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 33 Unchecked, 0.0s Time] [2022-11-02 20:54:44,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 993 states. [2022-11-02 20:54:44,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 993 to 993. [2022-11-02 20:54:44,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 993 states, 992 states have (on average 1.4546370967741935) internal successors, (1443), 992 states have internal predecessors, (1443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:54:44,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 993 states to 993 states and 1443 transitions. [2022-11-02 20:54:44,407 INFO L78 Accepts]: Start accepts. Automaton has 993 states and 1443 transitions. Word has length 98 [2022-11-02 20:54:44,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:54:44,408 INFO L495 AbstractCegarLoop]: Abstraction has 993 states and 1443 transitions. [2022-11-02 20:54:44,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 8.818181818181818) internal successors, (194), 22 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:54:44,409 INFO L276 IsEmpty]: Start isEmpty. Operand 993 states and 1443 transitions. [2022-11-02 20:54:44,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-02 20:54:44,413 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:54:44,413 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:54:44,443 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2dac4c0-b55c-4c5b-b944-c68694f9d51f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-02 20:54:44,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2dac4c0-b55c-4c5b-b944-c68694f9d51f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:54:44,631 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:54:44,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:54:44,631 INFO L85 PathProgramCache]: Analyzing trace with hash 219368677, now seen corresponding path program 1 times [2022-11-02 20:54:44,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:54:44,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [875953936] [2022-11-02 20:54:44,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:54:44,634 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:54:44,634 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2dac4c0-b55c-4c5b-b944-c68694f9d51f/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:54:44,635 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2dac4c0-b55c-4c5b-b944-c68694f9d51f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:54:44,639 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2dac4c0-b55c-4c5b-b944-c68694f9d51f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-02 20:54:45,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:54:45,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 1394 conjuncts, 49 conjunts are in the unsatisfiable core [2022-11-02 20:54:45,427 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:54:47,452 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:54:47,453 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:54:57,248 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 20:54:57,248 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:54:57,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [875953936] [2022-11-02 20:54:57,249 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [875953936] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:54:57,249 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:54:57,249 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 22 [2022-11-02 20:54:57,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504533863] [2022-11-02 20:54:57,250 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:54:57,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-02 20:54:57,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:54:57,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-02 20:54:57,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=349, Unknown=1, NotChecked=0, Total=462 [2022-11-02 20:54:57,251 INFO L87 Difference]: Start difference. First operand 993 states and 1443 transitions. Second operand has 22 states, 22 states have (on average 8.818181818181818) internal successors, (194), 22 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:54:57,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:54:57,379 INFO L93 Difference]: Finished difference Result 1393 states and 2027 transitions. [2022-11-02 20:54:57,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-02 20:54:57,380 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 8.818181818181818) internal successors, (194), 22 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2022-11-02 20:54:57,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:54:57,384 INFO L225 Difference]: With dead ends: 1393 [2022-11-02 20:54:57,385 INFO L226 Difference]: Without dead ends: 1391 [2022-11-02 20:54:57,386 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=120, Invalid=385, Unknown=1, NotChecked=0, Total=506 [2022-11-02 20:54:57,386 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 659 mSDsluCounter, 1618 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 659 SdHoareTripleChecker+Valid, 1817 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 80 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:54:57,387 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [659 Valid, 1817 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 80 Unchecked, 0.0s Time] [2022-11-02 20:54:57,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1391 states. [2022-11-02 20:54:57,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1391 to 1391. [2022-11-02 20:54:57,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1391 states, 1390 states have (on average 1.4568345323741008) internal successors, (2025), 1390 states have internal predecessors, (2025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:54:57,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1391 states to 1391 states and 2025 transitions. [2022-11-02 20:54:57,419 INFO L78 Accepts]: Start accepts. Automaton has 1391 states and 2025 transitions. Word has length 98 [2022-11-02 20:54:57,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:54:57,419 INFO L495 AbstractCegarLoop]: Abstraction has 1391 states and 2025 transitions. [2022-11-02 20:54:57,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 8.818181818181818) internal successors, (194), 22 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:54:57,420 INFO L276 IsEmpty]: Start isEmpty. Operand 1391 states and 2025 transitions. [2022-11-02 20:54:57,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-02 20:54:57,422 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:54:57,422 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:54:57,451 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2dac4c0-b55c-4c5b-b944-c68694f9d51f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-02 20:54:57,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2dac4c0-b55c-4c5b-b944-c68694f9d51f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:54:57,639 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:54:57,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:54:57,639 INFO L85 PathProgramCache]: Analyzing trace with hash 1654581091, now seen corresponding path program 1 times [2022-11-02 20:54:57,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:54:57,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [979707226] [2022-11-02 20:54:57,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:54:57,640 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:54:57,640 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2dac4c0-b55c-4c5b-b944-c68694f9d51f/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:54:57,641 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2dac4c0-b55c-4c5b-b944-c68694f9d51f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:54:57,642 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2dac4c0-b55c-4c5b-b944-c68694f9d51f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-02 20:54:58,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:54:58,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 1394 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 20:54:58,315 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:54:58,493 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 20:54:58,493 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:54:58,493 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:54:58,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [979707226] [2022-11-02 20:54:58,493 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [979707226] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:54:58,493 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:54:58,494 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:54:58,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300214365] [2022-11-02 20:54:58,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:54:58,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:54:58,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:54:58,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:54:58,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:54:58,495 INFO L87 Difference]: Start difference. First operand 1391 states and 2025 transitions. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:54:58,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:54:58,722 INFO L93 Difference]: Finished difference Result 2799 states and 4057 transitions. [2022-11-02 20:54:58,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 20:54:58,727 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2022-11-02 20:54:58,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:54:58,745 INFO L225 Difference]: With dead ends: 2799 [2022-11-02 20:54:58,745 INFO L226 Difference]: Without dead ends: 2355 [2022-11-02 20:54:58,746 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:54:58,747 INFO L413 NwaCegarLoop]: 339 mSDtfsCounter, 334 mSDsluCounter, 901 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 334 SdHoareTripleChecker+Valid, 1240 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 12 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:54:58,747 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [334 Valid, 1240 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 12 Unchecked, 0.2s Time] [2022-11-02 20:54:58,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2355 states. [2022-11-02 20:54:58,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2355 to 1407. [2022-11-02 20:54:58,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1407 states, 1406 states have (on average 1.445945945945946) internal successors, (2033), 1406 states have internal predecessors, (2033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:54:58,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1407 states to 1407 states and 2033 transitions. [2022-11-02 20:54:58,785 INFO L78 Accepts]: Start accepts. Automaton has 1407 states and 2033 transitions. Word has length 98 [2022-11-02 20:54:58,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:54:58,785 INFO L495 AbstractCegarLoop]: Abstraction has 1407 states and 2033 transitions. [2022-11-02 20:54:58,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:54:58,786 INFO L276 IsEmpty]: Start isEmpty. Operand 1407 states and 2033 transitions. [2022-11-02 20:54:58,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-02 20:54:58,789 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:54:58,789 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:54:58,818 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2dac4c0-b55c-4c5b-b944-c68694f9d51f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-11-02 20:54:59,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2dac4c0-b55c-4c5b-b944-c68694f9d51f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:54:59,003 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:54:59,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:54:59,003 INFO L85 PathProgramCache]: Analyzing trace with hash -374005019, now seen corresponding path program 1 times [2022-11-02 20:54:59,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:54:59,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1771572676] [2022-11-02 20:54:59,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:54:59,005 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:54:59,005 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2dac4c0-b55c-4c5b-b944-c68694f9d51f/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:54:59,006 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2dac4c0-b55c-4c5b-b944-c68694f9d51f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:54:59,009 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2dac4c0-b55c-4c5b-b944-c68694f9d51f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-02 20:54:59,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:54:59,664 INFO L263 TraceCheckSpWp]: Trace formula consists of 1394 conjuncts, 38 conjunts are in the unsatisfiable core [2022-11-02 20:54:59,672 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:55:01,156 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:55:01,156 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:55:08,229 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 20:55:08,229 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:55:08,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1771572676] [2022-11-02 20:55:08,230 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1771572676] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:55:08,230 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:55:08,230 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2022-11-02 20:55:08,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835547650] [2022-11-02 20:55:08,230 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:55:08,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 20:55:08,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:55:08,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 20:55:08,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=229, Unknown=2, NotChecked=0, Total=306 [2022-11-02 20:55:08,232 INFO L87 Difference]: Start difference. First operand 1407 states and 2033 transitions. Second operand has 18 states, 18 states have (on average 10.777777777777779) internal successors, (194), 18 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:55:08,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:55:08,370 INFO L93 Difference]: Finished difference Result 2130 states and 3078 transitions. [2022-11-02 20:55:08,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 20:55:08,372 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 10.777777777777779) internal successors, (194), 18 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2022-11-02 20:55:08,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:55:08,379 INFO L225 Difference]: With dead ends: 2130 [2022-11-02 20:55:08,379 INFO L226 Difference]: Without dead ends: 2128 [2022-11-02 20:55:08,380 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=85, Invalid=255, Unknown=2, NotChecked=0, Total=342 [2022-11-02 20:55:08,380 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 576 mSDsluCounter, 1549 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 576 SdHoareTripleChecker+Valid, 1713 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 34 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:55:08,381 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [576 Valid, 1713 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 34 Unchecked, 0.0s Time] [2022-11-02 20:55:08,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2128 states. [2022-11-02 20:55:08,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2128 to 2128. [2022-11-02 20:55:08,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2128 states, 2127 states have (on average 1.4461683121767748) internal successors, (3076), 2127 states have internal predecessors, (3076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:55:08,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2128 states to 2128 states and 3076 transitions. [2022-11-02 20:55:08,425 INFO L78 Accepts]: Start accepts. Automaton has 2128 states and 3076 transitions. Word has length 98 [2022-11-02 20:55:08,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:55:08,425 INFO L495 AbstractCegarLoop]: Abstraction has 2128 states and 3076 transitions. [2022-11-02 20:55:08,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 10.777777777777779) internal successors, (194), 18 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:55:08,426 INFO L276 IsEmpty]: Start isEmpty. Operand 2128 states and 3076 transitions. [2022-11-02 20:55:08,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-02 20:55:08,430 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:55:08,430 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:55:08,452 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2dac4c0-b55c-4c5b-b944-c68694f9d51f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-11-02 20:55:08,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2dac4c0-b55c-4c5b-b944-c68694f9d51f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:55:08,642 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:55:08,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:55:08,643 INFO L85 PathProgramCache]: Analyzing trace with hash 1993123689, now seen corresponding path program 1 times [2022-11-02 20:55:08,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:55:08,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1060672508] [2022-11-02 20:55:08,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:55:08,645 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:55:08,645 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2dac4c0-b55c-4c5b-b944-c68694f9d51f/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:55:08,646 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2dac4c0-b55c-4c5b-b944-c68694f9d51f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:55:08,688 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2dac4c0-b55c-4c5b-b944-c68694f9d51f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-11-02 20:55:09,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:09,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 1394 conjuncts, 38 conjunts are in the unsatisfiable core [2022-11-02 20:55:09,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:55:10,691 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:55:10,691 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:55:14,845 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 20:55:14,845 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:55:14,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1060672508] [2022-11-02 20:55:14,846 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1060672508] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:55:14,846 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:55:14,846 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2022-11-02 20:55:14,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638171851] [2022-11-02 20:55:14,846 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:55:14,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 20:55:14,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:55:14,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 20:55:14,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=230, Unknown=1, NotChecked=0, Total=306 [2022-11-02 20:55:14,848 INFO L87 Difference]: Start difference. First operand 2128 states and 3076 transitions. Second operand has 18 states, 18 states have (on average 10.777777777777779) internal successors, (194), 18 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:55:14,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:55:14,962 INFO L93 Difference]: Finished difference Result 3636 states and 5259 transitions. [2022-11-02 20:55:14,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 20:55:14,962 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 10.777777777777779) internal successors, (194), 18 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2022-11-02 20:55:14,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:55:14,973 INFO L225 Difference]: With dead ends: 3636 [2022-11-02 20:55:14,973 INFO L226 Difference]: Without dead ends: 3634 [2022-11-02 20:55:14,975 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=83, Invalid=258, Unknown=1, NotChecked=0, Total=342 [2022-11-02 20:55:14,976 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 597 mSDsluCounter, 1407 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 597 SdHoareTripleChecker+Valid, 1551 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 32 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:55:14,976 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [597 Valid, 1551 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 32 Unchecked, 0.0s Time] [2022-11-02 20:55:14,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3634 states. [2022-11-02 20:55:15,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3634 to 3599. [2022-11-02 20:55:15,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3599 states, 3598 states have (on average 1.4474708171206225) internal successors, (5208), 3598 states have internal predecessors, (5208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:55:15,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3599 states to 3599 states and 5208 transitions. [2022-11-02 20:55:15,054 INFO L78 Accepts]: Start accepts. Automaton has 3599 states and 5208 transitions. Word has length 98 [2022-11-02 20:55:15,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:55:15,055 INFO L495 AbstractCegarLoop]: Abstraction has 3599 states and 5208 transitions. [2022-11-02 20:55:15,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 10.777777777777779) internal successors, (194), 18 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:55:15,055 INFO L276 IsEmpty]: Start isEmpty. Operand 3599 states and 5208 transitions. [2022-11-02 20:55:15,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-02 20:55:15,060 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:55:15,060 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:55:15,088 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2dac4c0-b55c-4c5b-b944-c68694f9d51f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-11-02 20:55:15,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2dac4c0-b55c-4c5b-b944-c68694f9d51f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:55:15,282 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:55:15,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:55:15,283 INFO L85 PathProgramCache]: Analyzing trace with hash -747981977, now seen corresponding path program 1 times [2022-11-02 20:55:15,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:55:15,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1626785221] [2022-11-02 20:55:15,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:55:15,284 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:55:15,284 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2dac4c0-b55c-4c5b-b944-c68694f9d51f/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:55:15,285 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2dac4c0-b55c-4c5b-b944-c68694f9d51f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:55:15,288 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2dac4c0-b55c-4c5b-b944-c68694f9d51f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-11-02 20:55:15,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:15,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 1394 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 20:55:15,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:55:16,060 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 20:55:16,060 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:55:16,061 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:55:16,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1626785221] [2022-11-02 20:55:16,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1626785221] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:55:16,061 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:55:16,061 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:55:16,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55418135] [2022-11-02 20:55:16,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:55:16,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:55:16,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:55:16,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:55:16,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:55:16,062 INFO L87 Difference]: Start difference. First operand 3599 states and 5208 transitions. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:55:16,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:55:16,287 INFO L93 Difference]: Finished difference Result 6784 states and 9779 transitions. [2022-11-02 20:55:16,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:55:16,289 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2022-11-02 20:55:16,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:55:16,305 INFO L225 Difference]: With dead ends: 6784 [2022-11-02 20:55:16,305 INFO L226 Difference]: Without dead ends: 5985 [2022-11-02 20:55:16,308 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:55:16,309 INFO L413 NwaCegarLoop]: 270 mSDtfsCounter, 187 mSDsluCounter, 956 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 1226 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 24 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:55:16,309 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [187 Valid, 1226 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 24 Unchecked, 0.2s Time] [2022-11-02 20:55:16,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5985 states. [2022-11-02 20:55:16,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5985 to 3599. [2022-11-02 20:55:16,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3599 states, 3598 states have (on average 1.443023902167871) internal successors, (5192), 3598 states have internal predecessors, (5192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:55:16,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3599 states to 3599 states and 5192 transitions. [2022-11-02 20:55:16,406 INFO L78 Accepts]: Start accepts. Automaton has 3599 states and 5192 transitions. Word has length 98 [2022-11-02 20:55:16,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:55:16,406 INFO L495 AbstractCegarLoop]: Abstraction has 3599 states and 5192 transitions. [2022-11-02 20:55:16,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:55:16,406 INFO L276 IsEmpty]: Start isEmpty. Operand 3599 states and 5192 transitions. [2022-11-02 20:55:16,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-02 20:55:16,414 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:55:16,414 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:55:16,441 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2dac4c0-b55c-4c5b-b944-c68694f9d51f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-11-02 20:55:16,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2dac4c0-b55c-4c5b-b944-c68694f9d51f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:55:16,630 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:55:16,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:55:16,631 INFO L85 PathProgramCache]: Analyzing trace with hash 638803433, now seen corresponding path program 1 times [2022-11-02 20:55:16,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:55:16,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [436826281] [2022-11-02 20:55:16,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:55:16,633 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:55:16,633 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2dac4c0-b55c-4c5b-b944-c68694f9d51f/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:55:16,634 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2dac4c0-b55c-4c5b-b944-c68694f9d51f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:55:16,678 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2dac4c0-b55c-4c5b-b944-c68694f9d51f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-11-02 20:55:17,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:17,303 INFO L263 TraceCheckSpWp]: Trace formula consists of 1394 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 20:55:17,307 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:55:17,499 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 20:55:17,499 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:55:17,499 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:55:17,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [436826281] [2022-11-02 20:55:17,499 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [436826281] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:55:17,499 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:55:17,499 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:55:17,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491793058] [2022-11-02 20:55:17,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:55:17,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:55:17,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:55:17,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:55:17,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:55:17,501 INFO L87 Difference]: Start difference. First operand 3599 states and 5192 transitions. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:55:17,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:55:17,771 INFO L93 Difference]: Finished difference Result 4954 states and 7155 transitions. [2022-11-02 20:55:17,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 20:55:17,772 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2022-11-02 20:55:17,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:55:17,784 INFO L225 Difference]: With dead ends: 4954 [2022-11-02 20:55:17,785 INFO L226 Difference]: Without dead ends: 4647 [2022-11-02 20:55:17,787 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:55:17,787 INFO L413 NwaCegarLoop]: 304 mSDtfsCounter, 217 mSDsluCounter, 1022 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 1326 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 17 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:55:17,788 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [217 Valid, 1326 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 17 Unchecked, 0.2s Time] [2022-11-02 20:55:17,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4647 states. [2022-11-02 20:55:17,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4647 to 3767. [2022-11-02 20:55:17,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3767 states, 3766 states have (on average 1.4391927774827402) internal successors, (5420), 3766 states have internal predecessors, (5420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:55:17,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3767 states to 3767 states and 5420 transitions. [2022-11-02 20:55:17,868 INFO L78 Accepts]: Start accepts. Automaton has 3767 states and 5420 transitions. Word has length 98 [2022-11-02 20:55:17,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:55:17,869 INFO L495 AbstractCegarLoop]: Abstraction has 3767 states and 5420 transitions. [2022-11-02 20:55:17,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:55:17,869 INFO L276 IsEmpty]: Start isEmpty. Operand 3767 states and 5420 transitions. [2022-11-02 20:55:17,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-02 20:55:17,874 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:55:17,874 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:55:17,906 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2dac4c0-b55c-4c5b-b944-c68694f9d51f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-11-02 20:55:18,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2dac4c0-b55c-4c5b-b944-c68694f9d51f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:55:18,102 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:55:18,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:55:18,102 INFO L85 PathProgramCache]: Analyzing trace with hash 2025006827, now seen corresponding path program 1 times [2022-11-02 20:55:18,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:55:18,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [633994499] [2022-11-02 20:55:18,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:55:18,104 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:55:18,104 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2dac4c0-b55c-4c5b-b944-c68694f9d51f/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:55:18,105 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2dac4c0-b55c-4c5b-b944-c68694f9d51f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:55:18,107 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2dac4c0-b55c-4c5b-b944-c68694f9d51f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-11-02 20:55:18,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:18,734 INFO L263 TraceCheckSpWp]: Trace formula consists of 1394 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 20:55:18,737 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:55:18,918 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 20:55:18,918 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:55:18,918 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:55:18,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [633994499] [2022-11-02 20:55:18,919 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [633994499] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:55:18,919 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:55:18,919 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:55:18,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779146042] [2022-11-02 20:55:18,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:55:18,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:55:18,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:55:18,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:55:18,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:55:18,921 INFO L87 Difference]: Start difference. First operand 3767 states and 5420 transitions. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:55:19,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:55:19,137 INFO L93 Difference]: Finished difference Result 4789 states and 6915 transitions. [2022-11-02 20:55:19,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 20:55:19,139 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2022-11-02 20:55:19,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:55:19,149 INFO L225 Difference]: With dead ends: 4789 [2022-11-02 20:55:19,150 INFO L226 Difference]: Without dead ends: 4496 [2022-11-02 20:55:19,151 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:55:19,152 INFO L413 NwaCegarLoop]: 290 mSDtfsCounter, 252 mSDsluCounter, 996 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 252 SdHoareTripleChecker+Valid, 1286 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 24 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:55:19,152 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [252 Valid, 1286 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 24 Unchecked, 0.2s Time] [2022-11-02 20:55:19,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4496 states. [2022-11-02 20:55:19,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4496 to 3789. [2022-11-02 20:55:19,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3789 states, 3788 states have (on average 1.4384899683210137) internal successors, (5449), 3788 states have internal predecessors, (5449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:55:19,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3789 states to 3789 states and 5449 transitions. [2022-11-02 20:55:19,228 INFO L78 Accepts]: Start accepts. Automaton has 3789 states and 5449 transitions. Word has length 98 [2022-11-02 20:55:19,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:55:19,228 INFO L495 AbstractCegarLoop]: Abstraction has 3789 states and 5449 transitions. [2022-11-02 20:55:19,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:55:19,229 INFO L276 IsEmpty]: Start isEmpty. Operand 3789 states and 5449 transitions. [2022-11-02 20:55:19,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-02 20:55:19,234 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:55:19,234 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:55:19,261 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2dac4c0-b55c-4c5b-b944-c68694f9d51f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-11-02 20:55:19,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2dac4c0-b55c-4c5b-b944-c68694f9d51f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:55:19,456 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:55:19,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:55:19,456 INFO L85 PathProgramCache]: Analyzing trace with hash -1847258643, now seen corresponding path program 1 times [2022-11-02 20:55:19,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:55:19,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [346914862] [2022-11-02 20:55:19,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:55:19,458 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:55:19,458 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2dac4c0-b55c-4c5b-b944-c68694f9d51f/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:55:19,459 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2dac4c0-b55c-4c5b-b944-c68694f9d51f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:55:19,463 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2dac4c0-b55c-4c5b-b944-c68694f9d51f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-11-02 20:55:20,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:20,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 1394 conjuncts, 32 conjunts are in the unsatisfiable core [2022-11-02 20:55:20,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:55:21,404 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:55:21,406 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:55:26,932 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 20:55:26,932 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:55:26,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [346914862] [2022-11-02 20:55:26,932 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [346914862] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:55:26,933 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:55:26,933 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2022-11-02 20:55:26,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770211189] [2022-11-02 20:55:26,933 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:55:26,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 20:55:26,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:55:26,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 20:55:26,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2022-11-02 20:55:26,935 INFO L87 Difference]: Start difference. First operand 3789 states and 5449 transitions. Second operand has 18 states, 18 states have (on average 10.777777777777779) internal successors, (194), 18 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:55:27,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:55:27,027 INFO L93 Difference]: Finished difference Result 5082 states and 7361 transitions. [2022-11-02 20:55:27,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 20:55:27,028 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 10.777777777777779) internal successors, (194), 18 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2022-11-02 20:55:27,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:55:27,059 INFO L225 Difference]: With dead ends: 5082 [2022-11-02 20:55:27,060 INFO L226 Difference]: Without dead ends: 5080 [2022-11-02 20:55:27,061 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2022-11-02 20:55:27,061 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 398 mSDsluCounter, 1316 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 398 SdHoareTripleChecker+Valid, 1452 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 38 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:55:27,062 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [398 Valid, 1452 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 38 Unchecked, 0.0s Time] [2022-11-02 20:55:27,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5080 states. [2022-11-02 20:55:27,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5080 to 5080. [2022-11-02 20:55:27,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5080 states, 5079 states have (on average 1.448907265209687) internal successors, (7359), 5079 states have internal predecessors, (7359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:55:27,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5080 states to 5080 states and 7359 transitions. [2022-11-02 20:55:27,161 INFO L78 Accepts]: Start accepts. Automaton has 5080 states and 7359 transitions. Word has length 98 [2022-11-02 20:55:27,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:55:27,161 INFO L495 AbstractCegarLoop]: Abstraction has 5080 states and 7359 transitions. [2022-11-02 20:55:27,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 10.777777777777779) internal successors, (194), 18 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:55:27,162 INFO L276 IsEmpty]: Start isEmpty. Operand 5080 states and 7359 transitions. [2022-11-02 20:55:27,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-02 20:55:27,168 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:55:27,168 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:55:27,200 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2dac4c0-b55c-4c5b-b944-c68694f9d51f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-11-02 20:55:27,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2dac4c0-b55c-4c5b-b944-c68694f9d51f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:55:27,395 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:55:27,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:55:27,395 INFO L85 PathProgramCache]: Analyzing trace with hash 1854334957, now seen corresponding path program 1 times [2022-11-02 20:55:27,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:55:27,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [730620401] [2022-11-02 20:55:27,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:55:27,397 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:55:27,397 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2dac4c0-b55c-4c5b-b944-c68694f9d51f/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:55:27,397 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2dac4c0-b55c-4c5b-b944-c68694f9d51f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:55:27,399 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2dac4c0-b55c-4c5b-b944-c68694f9d51f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-11-02 20:55:27,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:27,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 1394 conjuncts, 42 conjunts are in the unsatisfiable core [2022-11-02 20:55:28,000 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:55:29,146 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:55:29,146 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:55:33,745 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 20:55:33,745 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:55:33,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [730620401] [2022-11-02 20:55:33,745 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [730620401] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:55:33,745 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:55:33,745 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2022-11-02 20:55:33,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816395555] [2022-11-02 20:55:33,746 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:55:33,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 20:55:33,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:55:33,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 20:55:33,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2022-11-02 20:55:33,747 INFO L87 Difference]: Start difference. First operand 5080 states and 7359 transitions. Second operand has 18 states, 18 states have (on average 10.777777777777779) internal successors, (194), 18 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:55:33,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:55:33,877 INFO L93 Difference]: Finished difference Result 7164 states and 10401 transitions. [2022-11-02 20:55:33,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 20:55:33,878 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 10.777777777777779) internal successors, (194), 18 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2022-11-02 20:55:33,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:55:33,889 INFO L225 Difference]: With dead ends: 7164 [2022-11-02 20:55:33,890 INFO L226 Difference]: Without dead ends: 7162 [2022-11-02 20:55:33,892 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2022-11-02 20:55:33,892 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 296 mSDsluCounter, 1034 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 1167 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 22 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:55:33,893 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [296 Valid, 1167 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 22 Unchecked, 0.0s Time] [2022-11-02 20:55:33,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7162 states. [2022-11-02 20:55:34,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7162 to 7162. [2022-11-02 20:55:34,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7162 states, 7161 states have (on average 1.452171484429549) internal successors, (10399), 7161 states have internal predecessors, (10399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:55:34,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7162 states to 7162 states and 10399 transitions. [2022-11-02 20:55:34,045 INFO L78 Accepts]: Start accepts. Automaton has 7162 states and 10399 transitions. Word has length 98 [2022-11-02 20:55:34,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:55:34,045 INFO L495 AbstractCegarLoop]: Abstraction has 7162 states and 10399 transitions. [2022-11-02 20:55:34,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 10.777777777777779) internal successors, (194), 18 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:55:34,046 INFO L276 IsEmpty]: Start isEmpty. Operand 7162 states and 10399 transitions. [2022-11-02 20:55:34,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-02 20:55:34,083 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:55:34,083 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:55:34,106 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2dac4c0-b55c-4c5b-b944-c68694f9d51f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-11-02 20:55:34,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2dac4c0-b55c-4c5b-b944-c68694f9d51f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:55:34,298 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:55:34,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:55:34,299 INFO L85 PathProgramCache]: Analyzing trace with hash 8967791, now seen corresponding path program 1 times [2022-11-02 20:55:34,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:55:34,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [357581124] [2022-11-02 20:55:34,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:55:34,301 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:55:34,301 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2dac4c0-b55c-4c5b-b944-c68694f9d51f/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:55:34,302 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2dac4c0-b55c-4c5b-b944-c68694f9d51f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:55:34,305 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2dac4c0-b55c-4c5b-b944-c68694f9d51f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-11-02 20:55:34,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:34,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 1394 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 20:55:34,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:55:35,214 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 20:55:35,214 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:55:35,214 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:55:35,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [357581124] [2022-11-02 20:55:35,215 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [357581124] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:55:35,215 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:55:35,215 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:55:35,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682954718] [2022-11-02 20:55:35,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:55:35,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:55:35,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:55:35,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:55:35,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:55:35,217 INFO L87 Difference]: Start difference. First operand 7162 states and 10399 transitions. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:55:35,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:55:35,538 INFO L93 Difference]: Finished difference Result 13576 states and 19821 transitions. [2022-11-02 20:55:35,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 20:55:35,539 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2022-11-02 20:55:35,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:55:35,556 INFO L225 Difference]: With dead ends: 13576 [2022-11-02 20:55:35,556 INFO L226 Difference]: Without dead ends: 10964 [2022-11-02 20:55:35,561 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:55:35,561 INFO L413 NwaCegarLoop]: 280 mSDtfsCounter, 256 mSDsluCounter, 1030 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 256 SdHoareTripleChecker+Valid, 1310 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 14 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:55:35,562 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [256 Valid, 1310 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 14 Unchecked, 0.2s Time] [2022-11-02 20:55:35,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10964 states. [2022-11-02 20:55:35,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10964 to 7836. [2022-11-02 20:55:35,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7836 states, 7835 states have (on average 1.4488832163369496) internal successors, (11352), 7835 states have internal predecessors, (11352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:55:35,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7836 states to 7836 states and 11352 transitions. [2022-11-02 20:55:35,739 INFO L78 Accepts]: Start accepts. Automaton has 7836 states and 11352 transitions. Word has length 98 [2022-11-02 20:55:35,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:55:35,739 INFO L495 AbstractCegarLoop]: Abstraction has 7836 states and 11352 transitions. [2022-11-02 20:55:35,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:55:35,740 INFO L276 IsEmpty]: Start isEmpty. Operand 7836 states and 11352 transitions. [2022-11-02 20:55:35,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-02 20:55:35,747 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:55:35,747 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:55:35,776 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2dac4c0-b55c-4c5b-b944-c68694f9d51f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-11-02 20:55:35,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2dac4c0-b55c-4c5b-b944-c68694f9d51f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:55:35,971 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:55:35,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:55:35,971 INFO L85 PathProgramCache]: Analyzing trace with hash 710032369, now seen corresponding path program 1 times [2022-11-02 20:55:35,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:55:35,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [201473770] [2022-11-02 20:55:35,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:55:35,972 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:55:35,973 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2dac4c0-b55c-4c5b-b944-c68694f9d51f/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:55:35,973 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2dac4c0-b55c-4c5b-b944-c68694f9d51f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:55:35,976 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2dac4c0-b55c-4c5b-b944-c68694f9d51f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-11-02 20:55:36,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:36,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 1394 conjuncts, 54 conjunts are in the unsatisfiable core [2022-11-02 20:55:36,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:55:37,930 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 20:55:37,931 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:55:53,994 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 20:55:53,995 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:55:53,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [201473770] [2022-11-02 20:55:53,995 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [201473770] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:55:53,995 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:55:53,995 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 22 [2022-11-02 20:55:53,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89761045] [2022-11-02 20:55:53,996 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:55:53,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-02 20:55:53,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:55:53,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-02 20:55:53,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=351, Unknown=4, NotChecked=0, Total=462 [2022-11-02 20:55:53,997 INFO L87 Difference]: Start difference. First operand 7836 states and 11352 transitions. Second operand has 22 states, 22 states have (on average 8.818181818181818) internal successors, (194), 22 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:55:54,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:55:54,112 INFO L93 Difference]: Finished difference Result 8497 states and 12325 transitions. [2022-11-02 20:55:54,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-02 20:55:54,112 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 8.818181818181818) internal successors, (194), 22 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2022-11-02 20:55:54,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:55:54,125 INFO L225 Difference]: With dead ends: 8497 [2022-11-02 20:55:54,125 INFO L226 Difference]: Without dead ends: 8495 [2022-11-02 20:55:54,128 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 14.8s TimeCoverageRelationStatistics Valid=107, Invalid=351, Unknown=4, NotChecked=0, Total=462 [2022-11-02 20:55:54,129 INFO L413 NwaCegarLoop]: 345 mSDtfsCounter, 532 mSDsluCounter, 2711 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 532 SdHoareTripleChecker+Valid, 3056 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 55 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:55:54,129 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [532 Valid, 3056 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 55 Unchecked, 0.0s Time] [2022-11-02 20:55:54,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8495 states. [2022-11-02 20:55:54,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8495 to 7879. [2022-11-02 20:55:54,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7879 states, 7878 states have (on average 1.4484640771769484) internal successors, (11411), 7878 states have internal predecessors, (11411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:55:54,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7879 states to 7879 states and 11411 transitions. [2022-11-02 20:55:54,292 INFO L78 Accepts]: Start accepts. Automaton has 7879 states and 11411 transitions. Word has length 98 [2022-11-02 20:55:54,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:55:54,292 INFO L495 AbstractCegarLoop]: Abstraction has 7879 states and 11411 transitions. [2022-11-02 20:55:54,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 8.818181818181818) internal successors, (194), 22 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:55:54,292 INFO L276 IsEmpty]: Start isEmpty. Operand 7879 states and 11411 transitions. [2022-11-02 20:55:54,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-02 20:55:54,299 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:55:54,299 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:55:54,321 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2dac4c0-b55c-4c5b-b944-c68694f9d51f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-11-02 20:55:54,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2dac4c0-b55c-4c5b-b944-c68694f9d51f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:55:54,514 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:55:54,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:55:54,515 INFO L85 PathProgramCache]: Analyzing trace with hash -73503631, now seen corresponding path program 1 times [2022-11-02 20:55:54,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:55:54,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1918698400] [2022-11-02 20:55:54,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:55:54,516 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:55:54,516 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2dac4c0-b55c-4c5b-b944-c68694f9d51f/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:55:54,517 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2dac4c0-b55c-4c5b-b944-c68694f9d51f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:55:54,532 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2dac4c0-b55c-4c5b-b944-c68694f9d51f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-11-02 20:55:55,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:55,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 1394 conjuncts, 42 conjunts are in the unsatisfiable core [2022-11-02 20:55:55,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:55:56,405 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:55:56,405 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:56:03,004 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 20:56:03,005 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:56:03,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1918698400] [2022-11-02 20:56:03,005 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1918698400] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:56:03,005 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:56:03,005 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2022-11-02 20:56:03,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607707725] [2022-11-02 20:56:03,006 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:56:03,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 20:56:03,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:56:03,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 20:56:03,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=230, Unknown=1, NotChecked=0, Total=306 [2022-11-02 20:56:03,007 INFO L87 Difference]: Start difference. First operand 7879 states and 11411 transitions. Second operand has 18 states, 18 states have (on average 10.777777777777779) internal successors, (194), 18 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:03,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:56:03,148 INFO L93 Difference]: Finished difference Result 10391 states and 15054 transitions. [2022-11-02 20:56:03,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 20:56:03,148 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 10.777777777777779) internal successors, (194), 18 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2022-11-02 20:56:03,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:56:03,159 INFO L225 Difference]: With dead ends: 10391 [2022-11-02 20:56:03,160 INFO L226 Difference]: Without dead ends: 10389 [2022-11-02 20:56:03,163 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=83, Invalid=258, Unknown=1, NotChecked=0, Total=342 [2022-11-02 20:56:03,164 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 350 mSDsluCounter, 1782 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 350 SdHoareTripleChecker+Valid, 1928 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 22 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:56:03,164 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [350 Valid, 1928 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 22 Unchecked, 0.0s Time] [2022-11-02 20:56:03,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10389 states. [2022-11-02 20:56:03,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10389 to 10294. [2022-11-02 20:56:03,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10294 states, 10293 states have (on average 1.4494316525794229) internal successors, (14919), 10293 states have internal predecessors, (14919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:03,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10294 states to 10294 states and 14919 transitions. [2022-11-02 20:56:03,376 INFO L78 Accepts]: Start accepts. Automaton has 10294 states and 14919 transitions. Word has length 98 [2022-11-02 20:56:03,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:56:03,377 INFO L495 AbstractCegarLoop]: Abstraction has 10294 states and 14919 transitions. [2022-11-02 20:56:03,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 10.777777777777779) internal successors, (194), 18 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:03,377 INFO L276 IsEmpty]: Start isEmpty. Operand 10294 states and 14919 transitions. [2022-11-02 20:56:03,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-02 20:56:03,385 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:56:03,385 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:56:03,413 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2dac4c0-b55c-4c5b-b944-c68694f9d51f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-11-02 20:56:03,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2dac4c0-b55c-4c5b-b944-c68694f9d51f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:56:03,608 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:56:03,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:03,608 INFO L85 PathProgramCache]: Analyzing trace with hash -1217806219, now seen corresponding path program 1 times [2022-11-02 20:56:03,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:56:03,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [901086979] [2022-11-02 20:56:03,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:03,610 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:56:03,610 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2dac4c0-b55c-4c5b-b944-c68694f9d51f/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:56:03,613 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2dac4c0-b55c-4c5b-b944-c68694f9d51f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:56:03,650 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2dac4c0-b55c-4c5b-b944-c68694f9d51f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-11-02 20:56:04,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:04,245 INFO L263 TraceCheckSpWp]: Trace formula consists of 1394 conjuncts, 44 conjunts are in the unsatisfiable core [2022-11-02 20:56:04,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:56:05,642 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:56:05,642 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:56:10,509 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 20:56:10,509 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:56:10,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [901086979] [2022-11-02 20:56:10,509 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [901086979] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:56:10,509 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:56:10,509 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2022-11-02 20:56:10,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541017859] [2022-11-02 20:56:10,510 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:56:10,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 20:56:10,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:56:10,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 20:56:10,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2022-11-02 20:56:10,511 INFO L87 Difference]: Start difference. First operand 10294 states and 14919 transitions. Second operand has 18 states, 18 states have (on average 10.777777777777779) internal successors, (194), 18 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:10,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:56:10,697 INFO L93 Difference]: Finished difference Result 16680 states and 24184 transitions. [2022-11-02 20:56:10,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 20:56:10,700 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 10.777777777777779) internal successors, (194), 18 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2022-11-02 20:56:10,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:56:10,717 INFO L225 Difference]: With dead ends: 16680 [2022-11-02 20:56:10,718 INFO L226 Difference]: Without dead ends: 16678 [2022-11-02 20:56:10,723 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2022-11-02 20:56:10,723 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 402 mSDsluCounter, 1554 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 402 SdHoareTripleChecker+Valid, 1700 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 27 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:56:10,724 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [402 Valid, 1700 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 27 Unchecked, 0.0s Time] [2022-11-02 20:56:10,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16678 states. [2022-11-02 20:56:11,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16678 to 16500. [2022-11-02 20:56:11,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16500 states, 16499 states have (on average 1.4506333717194981) internal successors, (23934), 16499 states have internal predecessors, (23934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:11,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16500 states to 16500 states and 23934 transitions. [2022-11-02 20:56:11,077 INFO L78 Accepts]: Start accepts. Automaton has 16500 states and 23934 transitions. Word has length 98 [2022-11-02 20:56:11,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:56:11,078 INFO L495 AbstractCegarLoop]: Abstraction has 16500 states and 23934 transitions. [2022-11-02 20:56:11,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 10.777777777777779) internal successors, (194), 18 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:11,078 INFO L276 IsEmpty]: Start isEmpty. Operand 16500 states and 23934 transitions. [2022-11-02 20:56:11,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-02 20:56:11,090 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:56:11,090 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:56:11,114 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2dac4c0-b55c-4c5b-b944-c68694f9d51f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2022-11-02 20:56:11,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2dac4c0-b55c-4c5b-b944-c68694f9d51f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:56:11,311 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:56:11,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:11,311 INFO L85 PathProgramCache]: Analyzing trace with hash 1166118519, now seen corresponding path program 1 times [2022-11-02 20:56:11,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:56:11,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1593105165] [2022-11-02 20:56:11,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:11,313 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:56:11,313 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2dac4c0-b55c-4c5b-b944-c68694f9d51f/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:56:11,313 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2dac4c0-b55c-4c5b-b944-c68694f9d51f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:56:11,317 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2dac4c0-b55c-4c5b-b944-c68694f9d51f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-11-02 20:56:11,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:11,967 INFO L263 TraceCheckSpWp]: Trace formula consists of 1394 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 20:56:11,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:56:12,112 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 20:56:12,113 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:56:12,113 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:56:12,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1593105165] [2022-11-02 20:56:12,113 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1593105165] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:56:12,113 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:56:12,113 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:56:12,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251937752] [2022-11-02 20:56:12,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:56:12,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:56:12,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:56:12,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:56:12,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:56:12,114 INFO L87 Difference]: Start difference. First operand 16500 states and 23934 transitions. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:12,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:56:12,540 INFO L93 Difference]: Finished difference Result 41395 states and 59853 transitions. [2022-11-02 20:56:12,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 20:56:12,541 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2022-11-02 20:56:12,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:56:12,567 INFO L225 Difference]: With dead ends: 41395 [2022-11-02 20:56:12,567 INFO L226 Difference]: Without dead ends: 31685 [2022-11-02 20:56:12,583 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:56:12,584 INFO L413 NwaCegarLoop]: 348 mSDtfsCounter, 343 mSDsluCounter, 904 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 343 SdHoareTripleChecker+Valid, 1252 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 12 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:56:12,584 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [343 Valid, 1252 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 12 Unchecked, 0.2s Time] [2022-11-02 20:56:12,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31685 states. [2022-11-02 20:56:12,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31685 to 16748. [2022-11-02 20:56:12,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16748 states, 16747 states have (on average 1.4470651459962978) internal successors, (24234), 16747 states have internal predecessors, (24234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:12,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16748 states to 16748 states and 24234 transitions. [2022-11-02 20:56:12,994 INFO L78 Accepts]: Start accepts. Automaton has 16748 states and 24234 transitions. Word has length 98 [2022-11-02 20:56:12,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:56:12,994 INFO L495 AbstractCegarLoop]: Abstraction has 16748 states and 24234 transitions. [2022-11-02 20:56:12,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:12,995 INFO L276 IsEmpty]: Start isEmpty. Operand 16748 states and 24234 transitions. [2022-11-02 20:56:13,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-02 20:56:13,008 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:56:13,009 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:56:13,039 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2dac4c0-b55c-4c5b-b944-c68694f9d51f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2022-11-02 20:56:13,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2dac4c0-b55c-4c5b-b944-c68694f9d51f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:56:13,230 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:56:13,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:13,231 INFO L85 PathProgramCache]: Analyzing trace with hash -1867931527, now seen corresponding path program 1 times [2022-11-02 20:56:13,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:56:13,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [630405825] [2022-11-02 20:56:13,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:13,232 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:56:13,232 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2dac4c0-b55c-4c5b-b944-c68694f9d51f/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:56:13,233 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2dac4c0-b55c-4c5b-b944-c68694f9d51f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:56:13,234 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2dac4c0-b55c-4c5b-b944-c68694f9d51f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-11-02 20:56:13,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:13,879 INFO L263 TraceCheckSpWp]: Trace formula consists of 1394 conjuncts, 56 conjunts are in the unsatisfiable core [2022-11-02 20:56:13,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:56:15,437 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:56:15,438 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:56:20,820 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 20:56:20,821 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:56:20,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [630405825] [2022-11-02 20:56:20,821 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [630405825] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:56:20,821 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:56:20,821 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2022-11-02 20:56:20,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779529596] [2022-11-02 20:56:20,821 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:56:20,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 20:56:20,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:56:20,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 20:56:20,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=230, Unknown=1, NotChecked=0, Total=306 [2022-11-02 20:56:20,823 INFO L87 Difference]: Start difference. First operand 16748 states and 24234 transitions. Second operand has 18 states, 18 states have (on average 10.777777777777779) internal successors, (194), 18 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:21,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:56:21,320 INFO L93 Difference]: Finished difference Result 29245 states and 42353 transitions. [2022-11-02 20:56:21,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 20:56:21,321 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 10.777777777777779) internal successors, (194), 18 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2022-11-02 20:56:21,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:56:21,339 INFO L225 Difference]: With dead ends: 29245 [2022-11-02 20:56:21,339 INFO L226 Difference]: Without dead ends: 29243 [2022-11-02 20:56:21,342 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=85, Invalid=256, Unknown=1, NotChecked=0, Total=342 [2022-11-02 20:56:21,343 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 289 mSDsluCounter, 1482 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 1608 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 46 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:56:21,343 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [289 Valid, 1608 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 46 Unchecked, 0.0s Time] [2022-11-02 20:56:21,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29243 states. [2022-11-02 20:56:21,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29243 to 29200. [2022-11-02 20:56:21,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29200 states, 29199 states have (on average 1.4484057673207986) internal successors, (42292), 29199 states have internal predecessors, (42292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:21,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29200 states to 29200 states and 42292 transitions. [2022-11-02 20:56:21,879 INFO L78 Accepts]: Start accepts. Automaton has 29200 states and 42292 transitions. Word has length 98 [2022-11-02 20:56:21,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:56:21,879 INFO L495 AbstractCegarLoop]: Abstraction has 29200 states and 42292 transitions. [2022-11-02 20:56:21,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 10.777777777777779) internal successors, (194), 18 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:21,880 INFO L276 IsEmpty]: Start isEmpty. Operand 29200 states and 42292 transitions. [2022-11-02 20:56:21,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-02 20:56:21,901 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:56:21,901 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:56:21,937 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2dac4c0-b55c-4c5b-b944-c68694f9d51f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2022-11-02 20:56:22,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2dac4c0-b55c-4c5b-b944-c68694f9d51f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:56:22,123 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:56:22,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:22,123 INFO L85 PathProgramCache]: Analyzing trace with hash 1222390123, now seen corresponding path program 1 times [2022-11-02 20:56:22,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:56:22,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1061162684] [2022-11-02 20:56:22,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:22,125 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:56:22,125 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2dac4c0-b55c-4c5b-b944-c68694f9d51f/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:56:22,127 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2dac4c0-b55c-4c5b-b944-c68694f9d51f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:56:22,136 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2dac4c0-b55c-4c5b-b944-c68694f9d51f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-11-02 20:56:22,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:22,759 INFO L263 TraceCheckSpWp]: Trace formula consists of 1394 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 20:56:22,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:56:22,837 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 20:56:22,837 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:56:22,837 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:56:22,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1061162684] [2022-11-02 20:56:22,838 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1061162684] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:56:22,838 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:56:22,838 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:56:22,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67055000] [2022-11-02 20:56:22,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:56:22,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:56:22,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:56:22,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:56:22,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:56:22,839 INFO L87 Difference]: Start difference. First operand 29200 states and 42292 transitions. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:23,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:56:23,564 INFO L93 Difference]: Finished difference Result 59867 states and 86604 transitions. [2022-11-02 20:56:23,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:56:23,567 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2022-11-02 20:56:23,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:56:23,601 INFO L225 Difference]: With dead ends: 59867 [2022-11-02 20:56:23,601 INFO L226 Difference]: Without dead ends: 54755 [2022-11-02 20:56:23,614 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:56:23,615 INFO L413 NwaCegarLoop]: 270 mSDtfsCounter, 146 mSDsluCounter, 933 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 1203 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 11 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:56:23,615 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 1203 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 11 Unchecked, 0.1s Time] [2022-11-02 20:56:23,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54755 states. [2022-11-02 20:56:24,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54755 to 29200. [2022-11-02 20:56:24,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29200 states, 29199 states have (on average 1.4483372718243774) internal successors, (42290), 29199 states have internal predecessors, (42290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:24,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29200 states to 29200 states and 42290 transitions. [2022-11-02 20:56:24,380 INFO L78 Accepts]: Start accepts. Automaton has 29200 states and 42290 transitions. Word has length 98 [2022-11-02 20:56:24,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:56:24,380 INFO L495 AbstractCegarLoop]: Abstraction has 29200 states and 42290 transitions. [2022-11-02 20:56:24,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:24,380 INFO L276 IsEmpty]: Start isEmpty. Operand 29200 states and 42290 transitions. [2022-11-02 20:56:24,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-02 20:56:24,395 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:56:24,395 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:56:24,428 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2dac4c0-b55c-4c5b-b944-c68694f9d51f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2022-11-02 20:56:24,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2dac4c0-b55c-4c5b-b944-c68694f9d51f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:56:24,618 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:56:24,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:24,619 INFO L85 PathProgramCache]: Analyzing trace with hash -1747720979, now seen corresponding path program 1 times [2022-11-02 20:56:24,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:56:24,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [568745886] [2022-11-02 20:56:24,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:24,620 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:56:24,620 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2dac4c0-b55c-4c5b-b944-c68694f9d51f/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:56:24,621 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2dac4c0-b55c-4c5b-b944-c68694f9d51f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:56:24,624 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2dac4c0-b55c-4c5b-b944-c68694f9d51f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-11-02 20:56:25,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:25,269 INFO L263 TraceCheckSpWp]: Trace formula consists of 1394 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 20:56:25,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:56:25,489 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 20:56:25,489 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:56:25,490 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:56:25,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [568745886] [2022-11-02 20:56:25,490 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [568745886] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:56:25,490 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:56:25,490 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:56:25,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766264667] [2022-11-02 20:56:25,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:56:25,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:56:25,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:56:25,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:56:25,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:56:25,491 INFO L87 Difference]: Start difference. First operand 29200 states and 42290 transitions. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:26,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:56:26,512 INFO L93 Difference]: Finished difference Result 33927 states and 48886 transitions. [2022-11-02 20:56:26,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 20:56:26,513 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2022-11-02 20:56:26,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:56:26,533 INFO L225 Difference]: With dead ends: 33927 [2022-11-02 20:56:26,533 INFO L226 Difference]: Without dead ends: 31411 [2022-11-02 20:56:26,538 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:56:26,538 INFO L413 NwaCegarLoop]: 269 mSDtfsCounter, 145 mSDsluCounter, 1063 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 1332 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 22 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:56:26,538 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 1332 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 22 Unchecked, 0.2s Time] [2022-11-02 20:56:26,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31411 states. [2022-11-02 20:56:27,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31411 to 29844. [2022-11-02 20:56:27,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29844 states, 29843 states have (on average 1.4470730154475087) internal successors, (43185), 29843 states have internal predecessors, (43185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:27,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29844 states to 29844 states and 43185 transitions. [2022-11-02 20:56:27,238 INFO L78 Accepts]: Start accepts. Automaton has 29844 states and 43185 transitions. Word has length 98 [2022-11-02 20:56:27,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:56:27,238 INFO L495 AbstractCegarLoop]: Abstraction has 29844 states and 43185 transitions. [2022-11-02 20:56:27,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:27,239 INFO L276 IsEmpty]: Start isEmpty. Operand 29844 states and 43185 transitions. [2022-11-02 20:56:27,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-02 20:56:27,256 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:56:27,256 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:56:27,275 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2dac4c0-b55c-4c5b-b944-c68694f9d51f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2022-11-02 20:56:27,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2dac4c0-b55c-4c5b-b944-c68694f9d51f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:56:27,457 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:56:27,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:27,457 INFO L85 PathProgramCache]: Analyzing trace with hash -1745873937, now seen corresponding path program 1 times [2022-11-02 20:56:27,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:56:27,539 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1708162290] [2022-11-02 20:56:27,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:27,539 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:56:27,539 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2dac4c0-b55c-4c5b-b944-c68694f9d51f/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:56:27,540 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2dac4c0-b55c-4c5b-b944-c68694f9d51f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:56:27,542 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2dac4c0-b55c-4c5b-b944-c68694f9d51f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2022-11-02 20:56:28,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:28,152 INFO L263 TraceCheckSpWp]: Trace formula consists of 1394 conjuncts, 38 conjunts are in the unsatisfiable core [2022-11-02 20:56:28,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:56:29,538 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:56:29,538 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:56:35,688 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 20:56:35,688 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:56:35,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1708162290] [2022-11-02 20:56:35,688 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1708162290] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:56:35,688 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:56:35,688 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2022-11-02 20:56:35,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428262525] [2022-11-02 20:56:35,689 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:56:35,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 20:56:35,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:56:35,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 20:56:35,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=230, Unknown=1, NotChecked=0, Total=306 [2022-11-02 20:56:35,690 INFO L87 Difference]: Start difference. First operand 29844 states and 43185 transitions. Second operand has 18 states, 18 states have (on average 10.777777777777779) internal successors, (194), 18 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)