./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_0661b.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eda18b9-d25b-4ed5-a501-9ad702a0beeb/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eda18b9-d25b-4ed5-a501-9ad702a0beeb/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_5eda18b9-d25b-4ed5-a501-9ad702a0beeb/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eda18b9-d25b-4ed5-a501-9ad702a0beeb/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_0661b.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eda18b9-d25b-4ed5-a501-9ad702a0beeb/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eda18b9-d25b-4ed5-a501-9ad702a0beeb/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 32bit --witnessprinter.graph.data.programhash 5b54c6a24c7834c05e2221d759ec8f9e3812bd18d8b6db36bcc9d2c0f76c5ecf --- 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 20:55:56,556 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:55:56,559 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:55:56,623 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:55:56,624 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:55:56,629 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:55:56,631 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:55:56,636 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:55:56,639 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:55:56,647 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:55:56,648 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:55:56,650 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:55:56,651 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:55:56,654 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:55:56,655 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:55:56,657 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:55:56,659 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:55:56,660 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:55:56,662 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:55:56,667 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:55:56,671 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:55:56,673 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:55:56,674 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:55:56,677 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:55:56,686 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:55:56,688 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:55:56,688 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:55:56,689 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:55:56,691 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:55:56,692 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:55:56,693 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:55:56,694 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:55:56,695 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:55:56,698 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:55:56,699 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:55:56,699 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:55:56,700 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:55:56,700 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:55:56,701 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:55:56,702 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:55:56,702 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:55:56,703 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eda18b9-d25b-4ed5-a501-9ad702a0beeb/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-02 20:55:56,745 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:55:56,745 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:55:56,746 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:55:56,747 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:55:56,748 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:55:56,748 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:55:56,749 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:55:56,750 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:55:56,750 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:55:56,751 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:55:56,752 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 20:55:56,753 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:55:56,753 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 20:55:56,753 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:55:56,754 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:55:56,754 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:55:56,754 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:55:56,754 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 20:55:56,755 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:55:56,755 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:55:56,755 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:55:56,756 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:55:56,756 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:55:56,756 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:55:56,756 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:55:56,757 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:55:56,757 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:55:56,757 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:55:56,758 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:55:56,758 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:55:56,758 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:55:56,759 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:55:56,759 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:55:56,759 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_5eda18b9-d25b-4ed5-a501-9ad702a0beeb/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eda18b9-d25b-4ed5-a501-9ad702a0beeb/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5b54c6a24c7834c05e2221d759ec8f9e3812bd18d8b6db36bcc9d2c0f76c5ecf [2022-11-02 20:55:57,057 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:55:57,093 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:55:57,095 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:55:57,097 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:55:57,097 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:55:57,099 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eda18b9-d25b-4ed5-a501-9ad702a0beeb/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/float-newlib/double_req_bl_0661b.c [2022-11-02 20:55:57,177 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eda18b9-d25b-4ed5-a501-9ad702a0beeb/bin/uautomizer-Dbtcem3rbc/data/96a9cd6af/5baf3d34a9974b5b93d39506a82979db/FLAGab9a4131c [2022-11-02 20:55:57,703 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:55:57,704 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eda18b9-d25b-4ed5-a501-9ad702a0beeb/sv-benchmarks/c/float-newlib/double_req_bl_0661b.c [2022-11-02 20:55:57,727 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eda18b9-d25b-4ed5-a501-9ad702a0beeb/bin/uautomizer-Dbtcem3rbc/data/96a9cd6af/5baf3d34a9974b5b93d39506a82979db/FLAGab9a4131c [2022-11-02 20:55:58,037 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eda18b9-d25b-4ed5-a501-9ad702a0beeb/bin/uautomizer-Dbtcem3rbc/data/96a9cd6af/5baf3d34a9974b5b93d39506a82979db [2022-11-02 20:55:58,042 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:55:58,044 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:55:58,047 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:55:58,047 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:55:58,050 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:55:58,051 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:55:58" (1/1) ... [2022-11-02 20:55:58,053 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c005d7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:55:58, skipping insertion in model container [2022-11-02 20:55:58,053 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:55:58" (1/1) ... [2022-11-02 20:55:58,060 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:55:58,104 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:55:58,409 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_5eda18b9-d25b-4ed5-a501-9ad702a0beeb/sv-benchmarks/c/float-newlib/double_req_bl_0661b.c[6444,6457] [2022-11-02 20:55:58,412 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:55:58,422 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:55:58,473 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_5eda18b9-d25b-4ed5-a501-9ad702a0beeb/sv-benchmarks/c/float-newlib/double_req_bl_0661b.c[6444,6457] [2022-11-02 20:55:58,474 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:55:58,493 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:55:58,493 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:55:58 WrapperNode [2022-11-02 20:55:58,493 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:55:58,494 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:55:58,495 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:55:58,495 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:55:58,508 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:55:58" (1/1) ... [2022-11-02 20:55:58,520 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:55:58" (1/1) ... [2022-11-02 20:55:58,573 INFO L138 Inliner]: procedures = 20, calls = 92, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 251 [2022-11-02 20:55:58,574 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:55:58,574 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:55:58,575 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:55:58,575 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:55:58,584 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:55:58" (1/1) ... [2022-11-02 20:55:58,585 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:55:58" (1/1) ... [2022-11-02 20:55:58,591 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:55:58" (1/1) ... [2022-11-02 20:55:58,591 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:55:58" (1/1) ... [2022-11-02 20:55:58,609 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:55:58" (1/1) ... [2022-11-02 20:55:58,616 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:55:58" (1/1) ... [2022-11-02 20:55:58,620 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:55:58" (1/1) ... [2022-11-02 20:55:58,623 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:55:58" (1/1) ... [2022-11-02 20:55:58,628 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:55:58,629 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:55:58,629 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:55:58,630 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:55:58,631 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:55:58" (1/1) ... [2022-11-02 20:55:58,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:55:58,650 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eda18b9-d25b-4ed5-a501-9ad702a0beeb/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:55:58,662 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eda18b9-d25b-4ed5-a501-9ad702a0beeb/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:55:58,706 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eda18b9-d25b-4ed5-a501-9ad702a0beeb/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:55:58,726 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:55:58,726 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 20:55:58,726 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 20:55:58,726 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2022-11-02 20:55:58,726 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-02 20:55:58,726 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_double [2022-11-02 20:55:58,727 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_double [2022-11-02 20:55:58,728 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2022-11-02 20:55:58,729 INFO L130 BoogieDeclarations]: Found specification of procedure atan_double [2022-11-02 20:55:58,729 INFO L138 BoogieDeclarations]: Found implementation of procedure atan_double [2022-11-02 20:55:58,729 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:55:58,729 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:55:58,730 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-02 20:55:58,730 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2022-11-02 20:55:58,730 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 20:55:58,893 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:55:58,896 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:55:59,530 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:55:59,537 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:55:59,537 INFO L300 CfgBuilder]: Removed 18 assume(true) statements. [2022-11-02 20:55:59,540 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:55:59 BoogieIcfgContainer [2022-11-02 20:55:59,540 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:55:59,542 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:55:59,542 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:55:59,548 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:55:59,548 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:55:58" (1/3) ... [2022-11-02 20:55:59,549 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33673a60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:55:59, skipping insertion in model container [2022-11-02 20:55:59,549 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:55:58" (2/3) ... [2022-11-02 20:55:59,550 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33673a60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:55:59, skipping insertion in model container [2022-11-02 20:55:59,550 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:55:59" (3/3) ... [2022-11-02 20:55:59,551 INFO L112 eAbstractionObserver]: Analyzing ICFG double_req_bl_0661b.c [2022-11-02 20:55:59,569 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:55:59,570 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 20:55:59,645 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:55:59,652 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;@1d8b62f3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:55:59,652 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 20:55:59,657 INFO L276 IsEmpty]: Start isEmpty. Operand has 99 states, 91 states have (on average 1.6593406593406594) internal successors, (151), 92 states have internal predecessors, (151), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-02 20:55:59,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-02 20:55:59,664 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:55:59,665 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:55:59,665 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:55:59,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:55:59,671 INFO L85 PathProgramCache]: Analyzing trace with hash 1101750833, now seen corresponding path program 1 times [2022-11-02 20:55:59,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:55:59,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786057658] [2022-11-02 20:55:59,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:55:59,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:55:59,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:59,932 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 20:55:59,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:55:59,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786057658] [2022-11-02 20:55:59,933 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786057658] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:55:59,933 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:55:59,934 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:55:59,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789273632] [2022-11-02 20:55:59,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:55:59,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-02 20:55:59,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:55:59,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-02 20:55:59,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-02 20:55:59,968 INFO L87 Difference]: Start difference. First operand has 99 states, 91 states have (on average 1.6593406593406594) internal successors, (151), 92 states have internal predecessors, (151), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:00,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:56:00,001 INFO L93 Difference]: Finished difference Result 195 states and 318 transitions. [2022-11-02 20:56:00,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-02 20:56:00,003 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-02 20:56:00,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:56:00,011 INFO L225 Difference]: With dead ends: 195 [2022-11-02 20:56:00,012 INFO L226 Difference]: Without dead ends: 95 [2022-11-02 20:56:00,017 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-02 20:56:00,020 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:56:00,022 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:56:00,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2022-11-02 20:56:00,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2022-11-02 20:56:00,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 88 states have (on average 1.4431818181818181) internal successors, (127), 88 states have internal predecessors, (127), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-02 20:56:00,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 135 transitions. [2022-11-02 20:56:00,065 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 135 transitions. Word has length 12 [2022-11-02 20:56:00,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:56:00,066 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 135 transitions. [2022-11-02 20:56:00,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:00,066 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 135 transitions. [2022-11-02 20:56:00,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-02 20:56:00,067 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:56:00,067 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:56:00,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:56:00,068 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:56:00,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:00,069 INFO L85 PathProgramCache]: Analyzing trace with hash -1195087928, now seen corresponding path program 1 times [2022-11-02 20:56:00,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:56:00,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013730224] [2022-11-02 20:56:00,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:00,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:56:00,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:56:00,307 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:56:00,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:56:00,403 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:56:00,412 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-02 20:56:00,414 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-02 20:56:00,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 20:56:00,420 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-02 20:56:00,423 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-02 20:56:00,484 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.11 08:56:00 BoogieIcfgContainer [2022-11-02 20:56:00,484 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-02 20:56:00,485 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-02 20:56:00,485 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-02 20:56:00,485 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-02 20:56:00,486 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:55:59" (3/4) ... [2022-11-02 20:56:00,489 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-02 20:56:00,489 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-02 20:56:00,490 INFO L158 Benchmark]: Toolchain (without parser) took 2445.48ms. Allocated memory was 96.5MB in the beginning and 127.9MB in the end (delta: 31.5MB). Free memory was 68.6MB in the beginning and 82.5MB in the end (delta: -13.9MB). Peak memory consumption was 17.4MB. Max. memory is 16.1GB. [2022-11-02 20:56:00,490 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 96.5MB. Free memory is still 50.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 20:56:00,491 INFO L158 Benchmark]: CACSL2BoogieTranslator took 446.99ms. Allocated memory was 96.5MB in the beginning and 127.9MB in the end (delta: 31.5MB). Free memory was 68.5MB in the beginning and 100.5MB in the end (delta: -31.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-02 20:56:00,491 INFO L158 Benchmark]: Boogie Procedure Inliner took 79.48ms. Allocated memory is still 127.9MB. Free memory was 100.0MB in the beginning and 96.7MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-02 20:56:00,492 INFO L158 Benchmark]: Boogie Preprocessor took 54.12ms. Allocated memory is still 127.9MB. Free memory was 96.7MB in the beginning and 93.7MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-02 20:56:00,493 INFO L158 Benchmark]: RCFGBuilder took 910.62ms. Allocated memory is still 127.9MB. Free memory was 93.3MB in the beginning and 95.2MB in the end (delta: -1.9MB). Peak memory consumption was 31.3MB. Max. memory is 16.1GB. [2022-11-02 20:56:00,493 INFO L158 Benchmark]: TraceAbstraction took 942.47ms. Allocated memory is still 127.9MB. Free memory was 94.0MB in the beginning and 82.5MB in the end (delta: 11.5MB). Peak memory consumption was 10.6MB. Max. memory is 16.1GB. [2022-11-02 20:56:00,494 INFO L158 Benchmark]: Witness Printer took 4.20ms. Allocated memory is still 127.9MB. Free memory is still 82.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 20:56:00,497 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 96.5MB. Free memory is still 50.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 446.99ms. Allocated memory was 96.5MB in the beginning and 127.9MB in the end (delta: 31.5MB). Free memory was 68.5MB in the beginning and 100.5MB in the end (delta: -31.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 79.48ms. Allocated memory is still 127.9MB. Free memory was 100.0MB in the beginning and 96.7MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 54.12ms. Allocated memory is still 127.9MB. Free memory was 96.7MB in the beginning and 93.7MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 910.62ms. Allocated memory is still 127.9MB. Free memory was 93.3MB in the beginning and 95.2MB in the end (delta: -1.9MB). Peak memory consumption was 31.3MB. Max. memory is 16.1GB. * TraceAbstraction took 942.47ms. Allocated memory is still 127.9MB. Free memory was 94.0MB in the beginning and 82.5MB in the end (delta: 11.5MB). Peak memory consumption was 10.6MB. Max. memory is 16.1GB. * Witness Printer took 4.20ms. Allocated memory is still 127.9MB. Free memory is still 82.5MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 273]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseOr at line 164, overapproximation of someUnaryDOUBLEoperation at line 54, overapproximation of bitwiseAnd at line 162, overapproximation of someBinaryArithmeticDOUBLEoperation at line 165, overapproximation of someBinaryDOUBLEComparisonOperation at line 272. Possible FailurePath: [L39-L44] static const double atanhi_atan[] = { 4.63647609000806093515e-01, 7.85398163397448278999e-01, 9.82793723247329054082e-01, 1.57079632679489655800e+00, }; [L46-L51] static const double atanlo_atan[] = { 2.26987774529616870924e-17, 3.06161699786838301793e-17, 1.39033110312309984516e-17, 6.12323399573676603587e-17, }; [L53-L60] static const double aT_atan[] = { 3.33333333333329318027e-01, -1.99999999998764832476e-01, 1.42857142725034663711e-01, -1.11111104054623557880e-01, 9.09088713343650656196e-02, -7.69187620504482999495e-02, 6.66107313738753120669e-02, -5.83357013379057348645e-02, 4.97687799461593236017e-02, -3.65315727442169155270e-02, 1.62858201153657823623e-02, }; [L62-L64] static const double one_atan = 1.0, pi_o_4 = 7.8539816339744827900E-01, pi_o_2 = 1.5707963267948965580E+00, pi = 3.1415926535897931160E+00, huge_atan = 1.0e300; [L141-L142] static const double tiny_atan2 = 1.0e-300, zero_atan2 = 0.0, pi_lo_atan2 = 1.2246467991473531772E-16; VAL [aT_atan={6:0}, atanhi_atan={4:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, one_atan=1, pi=785398163397448279/250000000000000000, pi_lo_atan2=3061616997868382943/25000000000000000000000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, tiny_atan2=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, zero_atan2=0] [L266] double x = __VERIFIER_nondet_double(); [L267] double y = 0.0; VAL [aT_atan={6:0}, atanhi_atan={4:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, one_atan=1, pi=785398163397448279/250000000000000000, pi_lo_atan2=3061616997868382943/25000000000000000000000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, tiny_atan2=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, y=0, zero_atan2=0] [L269] COND TRUE x > 0.0 [L270] CALL, EXPR __ieee754_atan2(y, x) [L145] double z; [L146] __int32_t k, m, hx, hy, ix, iy; [L147] __uint32_t lx, ly; VAL [\old(x)=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000011, \old(y)=0, aT_atan={6:0}, atanhi_atan={4:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, one_atan=1, pi=785398163397448279/250000000000000000, pi_lo_atan2=3061616997868382943/25000000000000000000000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, tiny_atan2=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000011, y=0, zero_atan2=0] [L150] ieee_double_shape_type ew_u; [L151] ew_u.value = (x) [L152] EXPR ew_u.parts.msw [L152] (hx) = ew_u.parts.msw [L153] EXPR ew_u.parts.lsw [L153] (lx) = ew_u.parts.lsw [L155] ix = hx & 0x7fffffff VAL [\old(x)=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000011, \old(y)=0, aT_atan={6:0}, atanhi_atan={4:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, hx=-2, ix=2146435073, lx=0, one_atan=1, pi=785398163397448279/250000000000000000, pi_lo_atan2=3061616997868382943/25000000000000000000000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, tiny_atan2=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000011, y=0, zero_atan2=0] [L157] ieee_double_shape_type ew_u; [L158] ew_u.value = (y) [L159] EXPR ew_u.parts.msw [L159] (hy) = ew_u.parts.msw [L160] EXPR ew_u.parts.lsw [L160] (ly) = ew_u.parts.lsw [L162] iy = hy & 0x7fffffff VAL [\old(x)=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000011, \old(y)=0, aT_atan={6:0}, atanhi_atan={4:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, hx=-2, hy=-1, ix=2146435073, iy=0, lx=0, ly=1, one_atan=1, pi=785398163397448279/250000000000000000, pi_lo_atan2=3061616997868382943/25000000000000000000000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, tiny_atan2=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000011, y=0, zero_atan2=0] [L163-L164] COND TRUE ((ix | ((lx | -lx) >> 31)) > 0x7ff00000) || ((iy | ((ly | -ly) >> 31)) > 0x7ff00000) [L165] return x + y; VAL [\old(x)=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000011, \old(y)=0, aT_atan={6:0}, atanhi_atan={4:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, hx=-2, hy=-1, ix=2146435073, iy=0, lx=0, ly=1, one_atan=1, pi=785398163397448279/250000000000000000, pi_lo_atan2=3061616997868382943/25000000000000000000000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, tiny_atan2=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000011, y=0, zero_atan2=0] [L270] RET, EXPR __ieee754_atan2(y, x) [L270] double res = __ieee754_atan2(y, x); [L272] EXPR res == 0.0 && __signbit_double(res) == 0 VAL [aT_atan={6:0}, atanhi_atan={4:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, one_atan=1, pi=785398163397448279/250000000000000000, pi_lo_atan2=3061616997868382943/25000000000000000000000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, res=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000010, res == 0.0 && __signbit_double(res) == 0=0, tiny_atan2=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000011, y=0, zero_atan2=0] [L272] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L273] reach_error() VAL [aT_atan={6:0}, atanhi_atan={4:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, one_atan=1, pi=785398163397448279/250000000000000000, pi_lo_atan2=3061616997868382943/25000000000000000000000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, res=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000010, tiny_atan2=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000011, y=0, zero_atan2=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 99 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.8s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 140 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 140 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=99occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 26 NumberOfCodeBlocks, 26 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 11 ConstructedInterpolants, 0 QuantifiedInterpolants, 11 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 20:56:00,545 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eda18b9-d25b-4ed5-a501-9ad702a0beeb/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eda18b9-d25b-4ed5-a501-9ad702a0beeb/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eda18b9-d25b-4ed5-a501-9ad702a0beeb/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_5eda18b9-d25b-4ed5-a501-9ad702a0beeb/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eda18b9-d25b-4ed5-a501-9ad702a0beeb/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_0661b.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eda18b9-d25b-4ed5-a501-9ad702a0beeb/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eda18b9-d25b-4ed5-a501-9ad702a0beeb/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 32bit --witnessprinter.graph.data.programhash 5b54c6a24c7834c05e2221d759ec8f9e3812bd18d8b6db36bcc9d2c0f76c5ecf --- 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 20:56:02,855 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:56:02,857 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:56:02,893 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:56:02,894 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:56:02,897 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:56:02,899 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:56:02,906 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:56:02,911 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:56:02,916 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:56:02,917 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:56:02,920 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:56:02,920 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:56:02,923 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:56:02,925 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:56:02,927 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:56:02,928 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:56:02,929 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:56:02,931 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:56:02,939 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:56:02,941 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:56:02,942 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:56:02,945 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:56:02,947 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:56:02,953 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:56:02,956 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:56:02,956 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:56:02,957 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:56:02,959 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:56:02,960 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:56:02,961 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:56:02,962 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:56:02,964 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:56:02,965 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:56:02,966 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:56:02,966 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:56:02,967 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:56:02,967 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:56:02,967 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:56:02,969 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:56:02,970 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:56:02,971 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eda18b9-d25b-4ed5-a501-9ad702a0beeb/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-11-02 20:56:03,036 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:56:03,036 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:56:03,038 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:56:03,038 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:56:03,039 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:56:03,039 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:56:03,041 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:56:03,041 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:56:03,041 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:56:03,042 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:56:03,043 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 20:56:03,043 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 20:56:03,044 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:56:03,044 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:56:03,044 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:56:03,045 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:56:03,045 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-02 20:56:03,045 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-02 20:56:03,046 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-02 20:56:03,046 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 20:56:03,046 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:56:03,046 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:56:03,047 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:56:03,047 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:56:03,047 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:56:03,048 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:56:03,048 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:56:03,049 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:56:03,049 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:56:03,049 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:56:03,050 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-02 20:56:03,050 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-02 20:56:03,050 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:56:03,051 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:56:03,051 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:56:03,051 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-02 20:56:03,051 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_5eda18b9-d25b-4ed5-a501-9ad702a0beeb/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eda18b9-d25b-4ed5-a501-9ad702a0beeb/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5b54c6a24c7834c05e2221d759ec8f9e3812bd18d8b6db36bcc9d2c0f76c5ecf [2022-11-02 20:56:03,422 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:56:03,444 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:56:03,447 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:56:03,449 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:56:03,449 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:56:03,451 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eda18b9-d25b-4ed5-a501-9ad702a0beeb/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/float-newlib/double_req_bl_0661b.c [2022-11-02 20:56:03,527 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eda18b9-d25b-4ed5-a501-9ad702a0beeb/bin/uautomizer-Dbtcem3rbc/data/4818966fe/315b831ba1ef4dddb62780229f71815b/FLAGa60fb4b8a [2022-11-02 20:56:03,987 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:56:03,987 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eda18b9-d25b-4ed5-a501-9ad702a0beeb/sv-benchmarks/c/float-newlib/double_req_bl_0661b.c [2022-11-02 20:56:04,008 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eda18b9-d25b-4ed5-a501-9ad702a0beeb/bin/uautomizer-Dbtcem3rbc/data/4818966fe/315b831ba1ef4dddb62780229f71815b/FLAGa60fb4b8a [2022-11-02 20:56:04,376 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eda18b9-d25b-4ed5-a501-9ad702a0beeb/bin/uautomizer-Dbtcem3rbc/data/4818966fe/315b831ba1ef4dddb62780229f71815b [2022-11-02 20:56:04,380 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:56:04,383 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:56:04,389 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:56:04,389 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:56:04,393 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:56:04,394 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:56:04" (1/1) ... [2022-11-02 20:56:04,396 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@dd87f96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:56:04, skipping insertion in model container [2022-11-02 20:56:04,397 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:56:04" (1/1) ... [2022-11-02 20:56:04,405 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:56:04,472 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:56:04,784 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_5eda18b9-d25b-4ed5-a501-9ad702a0beeb/sv-benchmarks/c/float-newlib/double_req_bl_0661b.c[6444,6457] [2022-11-02 20:56:04,787 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:56:04,799 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:56:04,843 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_5eda18b9-d25b-4ed5-a501-9ad702a0beeb/sv-benchmarks/c/float-newlib/double_req_bl_0661b.c[6444,6457] [2022-11-02 20:56:04,843 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:56:04,863 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:56:04,863 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:56:04 WrapperNode [2022-11-02 20:56:04,864 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:56:04,865 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:56:04,865 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:56:04,865 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:56:04,873 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:56:04" (1/1) ... [2022-11-02 20:56:04,887 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:56:04" (1/1) ... [2022-11-02 20:56:04,916 INFO L138 Inliner]: procedures = 23, calls = 92, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 251 [2022-11-02 20:56:04,917 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:56:04,918 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:56:04,918 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:56:04,918 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:56:04,928 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:56:04" (1/1) ... [2022-11-02 20:56:04,928 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:56:04" (1/1) ... [2022-11-02 20:56:04,934 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:56:04" (1/1) ... [2022-11-02 20:56:04,935 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:56:04" (1/1) ... [2022-11-02 20:56:04,949 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:56:04" (1/1) ... [2022-11-02 20:56:04,956 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:56:04" (1/1) ... [2022-11-02 20:56:04,959 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:56:04" (1/1) ... [2022-11-02 20:56:04,961 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:56:04" (1/1) ... [2022-11-02 20:56:04,966 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:56:04,967 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:56:04,967 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:56:04,967 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:56:04,968 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:56:04" (1/1) ... [2022-11-02 20:56:04,975 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:56:04,987 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eda18b9-d25b-4ed5-a501-9ad702a0beeb/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:56:05,024 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eda18b9-d25b-4ed5-a501-9ad702a0beeb/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:56:05,034 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eda18b9-d25b-4ed5-a501-9ad702a0beeb/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:56:05,067 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:56:05,067 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2022-11-02 20:56:05,067 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2022-11-02 20:56:05,073 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-02 20:56:05,074 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 20:56:05,074 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_double [2022-11-02 20:56:05,074 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_double [2022-11-02 20:56:05,074 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8 [2022-11-02 20:56:05,074 INFO L130 BoogieDeclarations]: Found specification of procedure atan_double [2022-11-02 20:56:05,074 INFO L138 BoogieDeclarations]: Found implementation of procedure atan_double [2022-11-02 20:56:05,075 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-02 20:56:05,075 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:56:05,075 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:56:05,075 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-02 20:56:05,075 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 20:56:05,215 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:56:05,217 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:56:25,675 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:56:25,682 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:56:25,683 INFO L300 CfgBuilder]: Removed 18 assume(true) statements. [2022-11-02 20:56:25,685 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:56:25 BoogieIcfgContainer [2022-11-02 20:56:25,685 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:56:25,687 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:56:25,687 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:56:25,690 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:56:25,691 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:56:04" (1/3) ... [2022-11-02 20:56:25,692 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@765242f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:56:25, skipping insertion in model container [2022-11-02 20:56:25,692 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:56:04" (2/3) ... [2022-11-02 20:56:25,692 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@765242f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:56:25, skipping insertion in model container [2022-11-02 20:56:25,692 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:56:25" (3/3) ... [2022-11-02 20:56:25,694 INFO L112 eAbstractionObserver]: Analyzing ICFG double_req_bl_0661b.c [2022-11-02 20:56:25,712 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:56:25,712 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 20:56:25,764 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:56:25,771 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;@261f0b5e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:56:25,771 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 20:56:25,775 INFO L276 IsEmpty]: Start isEmpty. Operand has 99 states, 91 states have (on average 1.6593406593406594) internal successors, (151), 92 states have internal predecessors, (151), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-02 20:56:25,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-02 20:56:25,783 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:56:25,783 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:56:25,784 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:56:25,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:25,789 INFO L85 PathProgramCache]: Analyzing trace with hash 1101750833, now seen corresponding path program 1 times [2022-11-02 20:56:25,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:56:25,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [222575116] [2022-11-02 20:56:25,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:25,803 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:56:25,804 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eda18b9-d25b-4ed5-a501-9ad702a0beeb/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:56:25,810 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eda18b9-d25b-4ed5-a501-9ad702a0beeb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:56:25,820 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eda18b9-d25b-4ed5-a501-9ad702a0beeb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-02 20:56:26,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:26,317 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-02 20:56:26,321 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:56:26,346 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 20:56:26,347 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:56:26,348 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:56:26,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [222575116] [2022-11-02 20:56:26,349 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [222575116] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:56:26,349 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:56:26,350 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:56:26,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642295626] [2022-11-02 20:56:26,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:56:26,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-02 20:56:26,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:56:26,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-02 20:56:26,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-02 20:56:26,404 INFO L87 Difference]: Start difference. First operand has 99 states, 91 states have (on average 1.6593406593406594) internal successors, (151), 92 states have internal predecessors, (151), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:26,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:56:26,453 INFO L93 Difference]: Finished difference Result 195 states and 318 transitions. [2022-11-02 20:56:26,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-02 20:56:26,459 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-02 20:56:26,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:56:26,470 INFO L225 Difference]: With dead ends: 195 [2022-11-02 20:56:26,470 INFO L226 Difference]: Without dead ends: 95 [2022-11-02 20:56:26,475 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-02 20:56:26,480 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:56:26,481 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:56:26,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2022-11-02 20:56:26,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2022-11-02 20:56:26,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 88 states have (on average 1.4431818181818181) internal successors, (127), 88 states have internal predecessors, (127), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-02 20:56:26,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 135 transitions. [2022-11-02 20:56:26,548 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 135 transitions. Word has length 12 [2022-11-02 20:56:26,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:56:26,549 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 135 transitions. [2022-11-02 20:56:26,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:26,549 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 135 transitions. [2022-11-02 20:56:26,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-02 20:56:26,550 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:56:26,550 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:56:26,573 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eda18b9-d25b-4ed5-a501-9ad702a0beeb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-02 20:56:26,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eda18b9-d25b-4ed5-a501-9ad702a0beeb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:56:26,773 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:56:26,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:26,774 INFO L85 PathProgramCache]: Analyzing trace with hash -1195087928, now seen corresponding path program 1 times [2022-11-02 20:56:26,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:56:26,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1829123417] [2022-11-02 20:56:26,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:26,775 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:56:26,775 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eda18b9-d25b-4ed5-a501-9ad702a0beeb/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:56:26,777 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eda18b9-d25b-4ed5-a501-9ad702a0beeb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:56:26,780 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eda18b9-d25b-4ed5-a501-9ad702a0beeb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-02 20:56:27,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:27,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-02 20:56:27,239 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:56:27,933 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2022-11-02 20:56:29,588 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:56:29,588 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 17 [2022-11-02 20:56:31,265 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 20:56:31,266 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:56:31,267 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:56:31,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1829123417] [2022-11-02 20:56:31,271 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1829123417] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:56:31,271 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:56:31,272 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 20:56:31,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469966779] [2022-11-02 20:56:31,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:56:31,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 20:56:31,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:56:31,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 20:56:31,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:56:31,277 INFO L87 Difference]: Start difference. First operand 95 states and 135 transitions. Second operand has 8 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:34,729 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.63s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-02 20:56:34,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:56:34,740 INFO L93 Difference]: Finished difference Result 104 states and 144 transitions. [2022-11-02 20:56:34,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 20:56:34,913 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-02 20:56:34,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:56:34,914 INFO L225 Difference]: With dead ends: 104 [2022-11-02 20:56:34,914 INFO L226 Difference]: Without dead ends: 95 [2022-11-02 20:56:34,915 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:56:34,916 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 5 mSDsluCounter, 694 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 822 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 77 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-02 20:56:34,916 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 822 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 1 Unknown, 77 Unchecked, 2.8s Time] [2022-11-02 20:56:34,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2022-11-02 20:56:34,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2022-11-02 20:56:34,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 88 states have (on average 1.4318181818181819) internal successors, (126), 88 states have internal predecessors, (126), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-02 20:56:34,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 134 transitions. [2022-11-02 20:56:34,926 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 134 transitions. Word has length 14 [2022-11-02 20:56:34,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:56:34,927 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 134 transitions. [2022-11-02 20:56:34,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:34,927 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 134 transitions. [2022-11-02 20:56:34,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-02 20:56:34,928 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:56:34,929 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:56:34,957 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eda18b9-d25b-4ed5-a501-9ad702a0beeb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-02 20:56:35,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eda18b9-d25b-4ed5-a501-9ad702a0beeb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:56:35,143 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:56:35,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:35,144 INFO L85 PathProgramCache]: Analyzing trace with hash 2064728897, now seen corresponding path program 1 times [2022-11-02 20:56:35,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:56:35,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1426775689] [2022-11-02 20:56:35,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:35,145 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:56:35,145 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eda18b9-d25b-4ed5-a501-9ad702a0beeb/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:56:35,146 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eda18b9-d25b-4ed5-a501-9ad702a0beeb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:56:35,149 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eda18b9-d25b-4ed5-a501-9ad702a0beeb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-02 20:56:35,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:35,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 20:56:35,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:56:37,339 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 20:56:37,339 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:56:37,339 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:56:37,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1426775689] [2022-11-02 20:56:37,340 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1426775689] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:56:37,340 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:56:37,340 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:56:37,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036993314] [2022-11-02 20:56:37,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:56:37,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:56:37,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:56:37,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:56:37,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:56:37,341 INFO L87 Difference]: Start difference. First operand 95 states and 134 transitions. Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:40,376 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.56s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-02 20:56:40,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:56:40,382 INFO L93 Difference]: Finished difference Result 179 states and 250 transitions. [2022-11-02 20:56:40,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 20:56:40,551 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 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 19 [2022-11-02 20:56:40,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:56:40,553 INFO L225 Difference]: With dead ends: 179 [2022-11-02 20:56:40,553 INFO L226 Difference]: Without dead ends: 104 [2022-11-02 20:56:40,553 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:56:40,554 INFO L413 NwaCegarLoop]: 137 mSDtfsCounter, 19 mSDsluCounter, 512 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 649 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 17 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-02 20:56:40,555 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 649 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 1 Unknown, 17 Unchecked, 2.6s Time] [2022-11-02 20:56:40,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2022-11-02 20:56:40,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 95. [2022-11-02 20:56:40,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 88 states have (on average 1.4204545454545454) internal successors, (125), 88 states have internal predecessors, (125), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-02 20:56:40,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 133 transitions. [2022-11-02 20:56:40,570 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 133 transitions. Word has length 19 [2022-11-02 20:56:40,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:56:40,570 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 133 transitions. [2022-11-02 20:56:40,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:40,571 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 133 transitions. [2022-11-02 20:56:40,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-02 20:56:40,571 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:56:40,572 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:56:40,587 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eda18b9-d25b-4ed5-a501-9ad702a0beeb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2022-11-02 20:56:40,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eda18b9-d25b-4ed5-a501-9ad702a0beeb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:56:40,779 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:56:40,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:40,779 INFO L85 PathProgramCache]: Analyzing trace with hash 681986241, now seen corresponding path program 1 times [2022-11-02 20:56:40,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:56:40,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [123603973] [2022-11-02 20:56:40,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:40,780 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:56:40,780 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eda18b9-d25b-4ed5-a501-9ad702a0beeb/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:56:40,786 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eda18b9-d25b-4ed5-a501-9ad702a0beeb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:56:40,787 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eda18b9-d25b-4ed5-a501-9ad702a0beeb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-02 20:56:41,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:41,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-02 20:56:41,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:56:42,194 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 20:56:42,194 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:56:42,195 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:56:42,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [123603973] [2022-11-02 20:56:42,195 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [123603973] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:56:42,195 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:56:42,196 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:56:42,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154699844] [2022-11-02 20:56:42,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:56:42,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:56:42,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:56:42,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:56:42,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:56:42,198 INFO L87 Difference]: Start difference. First operand 95 states and 133 transitions. Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:45,962 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-02 20:56:47,084 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-02 20:56:49,436 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-02 20:56:50,530 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-02 20:56:51,802 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-02 20:56:52,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:56:52,612 INFO L93 Difference]: Finished difference Result 107 states and 144 transitions. [2022-11-02 20:56:52,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:56:52,613 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 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 19 [2022-11-02 20:56:52,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:56:52,616 INFO L225 Difference]: With dead ends: 107 [2022-11-02 20:56:52,616 INFO L226 Difference]: Without dead ends: 104 [2022-11-02 20:56:52,617 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:56:52,617 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 181 mSDsluCounter, 319 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 449 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.6s IncrementalHoareTripleChecker+Time [2022-11-02 20:56:52,618 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [181 Valid, 449 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 9.6s Time] [2022-11-02 20:56:52,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2022-11-02 20:56:52,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 97. [2022-11-02 20:56:52,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 90 states have (on average 1.4111111111111112) internal successors, (127), 90 states have internal predecessors, (127), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-02 20:56:52,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 135 transitions. [2022-11-02 20:56:52,633 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 135 transitions. Word has length 19 [2022-11-02 20:56:52,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:56:52,633 INFO L495 AbstractCegarLoop]: Abstraction has 97 states and 135 transitions. [2022-11-02 20:56:52,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:52,634 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 135 transitions. [2022-11-02 20:56:52,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-02 20:56:52,635 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:56:52,635 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:56:52,653 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eda18b9-d25b-4ed5-a501-9ad702a0beeb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-02 20:56:52,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eda18b9-d25b-4ed5-a501-9ad702a0beeb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:56:52,851 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:56:52,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:52,851 INFO L85 PathProgramCache]: Analyzing trace with hash -419749804, now seen corresponding path program 1 times [2022-11-02 20:56:52,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:56:52,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [476168847] [2022-11-02 20:56:52,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:52,854 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:56:52,854 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eda18b9-d25b-4ed5-a501-9ad702a0beeb/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:56:52,855 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eda18b9-d25b-4ed5-a501-9ad702a0beeb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:56:52,863 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eda18b9-d25b-4ed5-a501-9ad702a0beeb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-02 20:56:53,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:53,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-02 20:56:53,256 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:56:53,771 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 16 [2022-11-02 20:56:54,605 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2022-11-02 20:56:59,731 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 20:56:59,731 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:56:59,731 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:56:59,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [476168847] [2022-11-02 20:56:59,732 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [476168847] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:56:59,732 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:56:59,732 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-02 20:56:59,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519474415] [2022-11-02 20:56:59,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:56:59,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 20:56:59,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:56:59,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 20:56:59,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:56:59,734 INFO L87 Difference]: Start difference. First operand 97 states and 135 transitions. Second operand has 9 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 9 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:57:03,246 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.60s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-02 20:57:03,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:57:03,251 INFO L93 Difference]: Finished difference Result 186 states and 259 transitions. [2022-11-02 20:57:03,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 20:57:03,446 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 9 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-11-02 20:57:03,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:57:03,447 INFO L225 Difference]: With dead ends: 186 [2022-11-02 20:57:03,447 INFO L226 Difference]: Without dead ends: 108 [2022-11-02 20:57:03,448 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:57:03,449 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 15 mSDsluCounter, 688 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 809 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 58 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-11-02 20:57:03,449 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 809 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 1 Unknown, 58 Unchecked, 2.9s Time] [2022-11-02 20:57:03,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2022-11-02 20:57:03,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 99. [2022-11-02 20:57:03,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 92 states have (on average 1.4021739130434783) internal successors, (129), 92 states have internal predecessors, (129), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-02 20:57:03,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 137 transitions. [2022-11-02 20:57:03,459 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 137 transitions. Word has length 20 [2022-11-02 20:57:03,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:57:03,460 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 137 transitions. [2022-11-02 20:57:03,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 9 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:57:03,460 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 137 transitions. [2022-11-02 20:57:03,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-02 20:57:03,461 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:57:03,461 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:57:03,483 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eda18b9-d25b-4ed5-a501-9ad702a0beeb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-02 20:57:03,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eda18b9-d25b-4ed5-a501-9ad702a0beeb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:57:03,672 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:57:03,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:57:03,673 INFO L85 PathProgramCache]: Analyzing trace with hash -1229096430, now seen corresponding path program 1 times [2022-11-02 20:57:03,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:57:03,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1476028857] [2022-11-02 20:57:03,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:57:03,674 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:57:03,674 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eda18b9-d25b-4ed5-a501-9ad702a0beeb/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:57:03,675 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eda18b9-d25b-4ed5-a501-9ad702a0beeb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:57:03,694 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eda18b9-d25b-4ed5-a501-9ad702a0beeb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-02 20:57:04,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:57:04,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-02 20:57:04,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:57:04,529 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 16 [2022-11-02 20:57:05,300 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2022-11-02 20:57:07,761 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 20:57:07,762 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:57:07,762 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:57:07,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1476028857] [2022-11-02 20:57:07,762 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1476028857] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:57:07,763 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:57:07,763 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 20:57:07,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165510640] [2022-11-02 20:57:07,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:57:07,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 20:57:07,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:57:07,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 20:57:07,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:57:07,765 INFO L87 Difference]: Start difference. First operand 99 states and 137 transitions. Second operand has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:57:08,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:57:08,879 INFO L93 Difference]: Finished difference Result 149 states and 196 transitions. [2022-11-02 20:57:08,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:57:08,880 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-11-02 20:57:08,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:57:08,881 INFO L225 Difference]: With dead ends: 149 [2022-11-02 20:57:08,881 INFO L226 Difference]: Without dead ends: 67 [2022-11-02 20:57:08,881 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:57:08,882 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 15 mSDsluCounter, 336 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 395 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 31 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:57:08,883 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 395 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 31 Unchecked, 0.4s Time] [2022-11-02 20:57:08,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2022-11-02 20:57:08,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 60. [2022-11-02 20:57:08,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 55 states have (on average 1.2363636363636363) internal successors, (68), 55 states have internal predecessors, (68), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-02 20:57:08,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 72 transitions. [2022-11-02 20:57:08,889 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 72 transitions. Word has length 20 [2022-11-02 20:57:08,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:57:08,889 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 72 transitions. [2022-11-02 20:57:08,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:57:08,890 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 72 transitions. [2022-11-02 20:57:08,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-02 20:57:08,891 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:57:08,891 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:57:08,910 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eda18b9-d25b-4ed5-a501-9ad702a0beeb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-02 20:57:09,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eda18b9-d25b-4ed5-a501-9ad702a0beeb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:57:09,107 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:57:09,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:57:09,107 INFO L85 PathProgramCache]: Analyzing trace with hash -965606442, now seen corresponding path program 1 times [2022-11-02 20:57:09,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:57:09,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [800517781] [2022-11-02 20:57:09,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:57:09,108 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:57:09,108 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eda18b9-d25b-4ed5-a501-9ad702a0beeb/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:57:09,110 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eda18b9-d25b-4ed5-a501-9ad702a0beeb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:57:09,128 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eda18b9-d25b-4ed5-a501-9ad702a0beeb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-02 20:57:09,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:57:09,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-02 20:57:09,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:57:12,011 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 20:57:12,011 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:57:12,011 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:57:12,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [800517781] [2022-11-02 20:57:12,012 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [800517781] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:57:12,012 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:57:12,012 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-02 20:57:12,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725489376] [2022-11-02 20:57:12,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:57:12,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:57:12,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:57:12,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:57:12,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:57:12,016 INFO L87 Difference]: Start difference. First operand 60 states and 72 transitions. Second operand has 10 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:57:14,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:57:14,964 INFO L93 Difference]: Finished difference Result 70 states and 80 transitions. [2022-11-02 20:57:14,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 20:57:14,965 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 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 23 [2022-11-02 20:57:14,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:57:14,965 INFO L225 Difference]: With dead ends: 70 [2022-11-02 20:57:14,965 INFO L226 Difference]: Without dead ends: 57 [2022-11-02 20:57:14,966 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-11-02 20:57:14,967 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 55 mSDsluCounter, 456 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 518 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 10 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:57:14,967 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 518 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 50 Invalid, 0 Unknown, 10 Unchecked, 1.0s Time] [2022-11-02 20:57:14,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-11-02 20:57:14,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 54. [2022-11-02 20:57:14,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 49 states have (on average 1.2448979591836735) internal successors, (61), 49 states have internal predecessors, (61), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-02 20:57:14,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 65 transitions. [2022-11-02 20:57:14,973 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 65 transitions. Word has length 23 [2022-11-02 20:57:14,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:57:14,973 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 65 transitions. [2022-11-02 20:57:14,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:57:14,973 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 65 transitions. [2022-11-02 20:57:14,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-02 20:57:14,974 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:57:14,974 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:57:14,993 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eda18b9-d25b-4ed5-a501-9ad702a0beeb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-02 20:57:15,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eda18b9-d25b-4ed5-a501-9ad702a0beeb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:57:15,187 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:57:15,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:57:15,187 INFO L85 PathProgramCache]: Analyzing trace with hash 1017165070, now seen corresponding path program 1 times [2022-11-02 20:57:15,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:57:15,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [280432119] [2022-11-02 20:57:15,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:57:15,188 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:57:15,188 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eda18b9-d25b-4ed5-a501-9ad702a0beeb/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:57:15,189 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eda18b9-d25b-4ed5-a501-9ad702a0beeb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:57:15,203 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eda18b9-d25b-4ed5-a501-9ad702a0beeb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-02 20:57:15,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:57:15,550 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 20:57:15,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:57:17,664 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 20:57:17,664 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:57:17,664 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:57:17,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [280432119] [2022-11-02 20:57:17,665 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [280432119] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:57:17,665 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:57:17,665 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 20:57:17,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852293185] [2022-11-02 20:57:17,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:57:17,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 20:57:17,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:57:17,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 20:57:17,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:57:17,666 INFO L87 Difference]: Start difference. First operand 54 states and 65 transitions. Second operand has 8 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-02 20:57:21,891 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.28s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:57:24,498 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-02 20:57:26,700 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:57:29,477 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.68s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-02 20:57:32,357 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.88s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-02 20:57:35,157 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.80s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-02 20:57:38,017 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.86s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-02 20:57:38,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:57:38,018 INFO L93 Difference]: Finished difference Result 66 states and 77 transitions. [2022-11-02 20:57:38,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 20:57:38,225 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 27 [2022-11-02 20:57:38,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:57:38,225 INFO L225 Difference]: With dead ends: 66 [2022-11-02 20:57:38,225 INFO L226 Difference]: Without dead ends: 50 [2022-11-02 20:57:38,226 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:57:38,226 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 34 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 2 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 329 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 35 IncrementalHoareTripleChecker+Unchecked, 19.9s IncrementalHoareTripleChecker+Time [2022-11-02 20:57:38,227 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 329 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 7 Unknown, 35 Unchecked, 19.9s Time] [2022-11-02 20:57:38,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2022-11-02 20:57:38,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2022-11-02 20:57:38,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 45 states have (on average 1.2) internal successors, (54), 45 states have internal predecessors, (54), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-02 20:57:38,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 58 transitions. [2022-11-02 20:57:38,231 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 58 transitions. Word has length 27 [2022-11-02 20:57:38,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:57:38,232 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 58 transitions. [2022-11-02 20:57:38,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-02 20:57:38,232 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 58 transitions. [2022-11-02 20:57:38,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-02 20:57:38,232 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:57:38,233 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:57:38,252 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eda18b9-d25b-4ed5-a501-9ad702a0beeb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-02 20:57:38,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eda18b9-d25b-4ed5-a501-9ad702a0beeb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:57:38,433 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:57:38,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:57:38,434 INFO L85 PathProgramCache]: Analyzing trace with hash -1603923085, now seen corresponding path program 1 times [2022-11-02 20:57:38,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:57:38,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [620592855] [2022-11-02 20:57:38,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:57:38,434 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:57:38,434 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eda18b9-d25b-4ed5-a501-9ad702a0beeb/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:57:38,435 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eda18b9-d25b-4ed5-a501-9ad702a0beeb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:57:38,438 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eda18b9-d25b-4ed5-a501-9ad702a0beeb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-02 20:57:38,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:57:38,865 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 20:57:38,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:57:41,257 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 20:57:41,257 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:57:41,257 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:57:41,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [620592855] [2022-11-02 20:57:41,257 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [620592855] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:57:41,257 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:57:41,258 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-02 20:57:41,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448522261] [2022-11-02 20:57:41,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:57:41,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 20:57:41,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:57:41,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 20:57:41,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:57:41,259 INFO L87 Difference]: Start difference. First operand 50 states and 58 transitions. Second operand has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 8 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-02 20:57:48,533 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.38s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:57:51,556 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-02 20:57:53,561 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-02 20:57:55,767 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:57:57,871 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-02 20:58:01,351 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.63s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-02 20:58:04,335 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.98s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-02 20:58:07,332 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-02 20:58:10,333 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-02 20:58:10,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:58:10,334 INFO L93 Difference]: Finished difference Result 66 states and 73 transitions. [2022-11-02 20:58:10,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 20:58:10,551 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 8 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 27 [2022-11-02 20:58:10,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:58:10,552 INFO L225 Difference]: With dead ends: 66 [2022-11-02 20:58:10,552 INFO L226 Difference]: Without dead ends: 63 [2022-11-02 20:58:10,552 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2022-11-02 20:58:10,552 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 62 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 7 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 324 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:58:10,553 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 324 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 76 Invalid, 8 Unknown, 0 Unchecked, 26.4s Time] [2022-11-02 20:58:10,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2022-11-02 20:58:10,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 55. [2022-11-02 20:58:10,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 49 states have (on average 1.183673469387755) internal successors, (58), 49 states have internal predecessors, (58), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-02 20:58:10,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 63 transitions. [2022-11-02 20:58:10,559 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 63 transitions. Word has length 27 [2022-11-02 20:58:10,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:58:10,559 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 63 transitions. [2022-11-02 20:58:10,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 8 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-02 20:58:10,559 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 63 transitions. [2022-11-02 20:58:10,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-02 20:58:10,560 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:58:10,560 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:58:10,580 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eda18b9-d25b-4ed5-a501-9ad702a0beeb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-02 20:58:10,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eda18b9-d25b-4ed5-a501-9ad702a0beeb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:58:10,761 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:58:10,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:58:10,761 INFO L85 PathProgramCache]: Analyzing trace with hash 1890472593, now seen corresponding path program 1 times [2022-11-02 20:58:10,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:58:10,762 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [593924720] [2022-11-02 20:58:10,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:58:10,762 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:58:10,762 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eda18b9-d25b-4ed5-a501-9ad702a0beeb/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:58:10,764 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eda18b9-d25b-4ed5-a501-9ad702a0beeb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:58:10,771 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eda18b9-d25b-4ed5-a501-9ad702a0beeb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-02 20:58:15,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:58:15,328 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 20:58:15,331 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:58:18,246 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 20:58:18,246 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:58:18,246 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:58:18,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [593924720] [2022-11-02 20:58:18,246 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [593924720] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:58:18,247 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:58:18,247 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 20:58:18,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086492295] [2022-11-02 20:58:18,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:58:18,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 20:58:18,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:58:18,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 20:58:18,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:58:18,248 INFO L87 Difference]: Start difference. First operand 55 states and 63 transitions. Second operand has 8 states, 8 states have (on average 3.375) internal successors, (27), 8 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-02 20:58:22,859 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.30s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:58:25,540 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.68s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-02 20:58:27,740 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:58:31,291 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.75s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-02 20:58:34,223 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.93s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-02 20:58:37,093 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.87s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-02 20:58:39,950 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.86s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-02 20:58:39,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:58:39,950 INFO L93 Difference]: Finished difference Result 72 states and 82 transitions. [2022-11-02 20:58:40,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 20:58:40,167 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 8 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 29 [2022-11-02 20:58:40,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:58:40,167 INFO L225 Difference]: With dead ends: 72 [2022-11-02 20:58:40,167 INFO L226 Difference]: Without dead ends: 55 [2022-11-02 20:58:40,168 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:58:40,168 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 35 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 2 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 281 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 33 IncrementalHoareTripleChecker+Unchecked, 21.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:58:40,169 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 281 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 7 Unknown, 33 Unchecked, 21.1s Time] [2022-11-02 20:58:40,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2022-11-02 20:58:40,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2022-11-02 20:58:40,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 49 states have (on average 1.163265306122449) internal successors, (57), 49 states have internal predecessors, (57), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-02 20:58:40,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 62 transitions. [2022-11-02 20:58:40,173 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 62 transitions. Word has length 29 [2022-11-02 20:58:40,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:58:40,173 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 62 transitions. [2022-11-02 20:58:40,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 8 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-02 20:58:40,174 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 62 transitions. [2022-11-02 20:58:40,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-02 20:58:40,174 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:58:40,174 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:58:40,258 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eda18b9-d25b-4ed5-a501-9ad702a0beeb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-02 20:58:40,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eda18b9-d25b-4ed5-a501-9ad702a0beeb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:58:40,375 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:58:40,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:58:40,376 INFO L85 PathProgramCache]: Analyzing trace with hash 1050564698, now seen corresponding path program 1 times [2022-11-02 20:58:40,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:58:40,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [189167330] [2022-11-02 20:58:40,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:58:40,376 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:58:40,376 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eda18b9-d25b-4ed5-a501-9ad702a0beeb/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:58:40,377 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eda18b9-d25b-4ed5-a501-9ad702a0beeb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:58:40,378 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eda18b9-d25b-4ed5-a501-9ad702a0beeb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-02 20:58:44,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:58:44,755 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 20:58:44,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:59:16,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:59:16,352 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:59:16,353 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:59:16,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [189167330] [2022-11-02 20:59:16,353 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [189167330] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:59:16,353 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:59:16,353 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:59:16,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342520951] [2022-11-02 20:59:16,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:59:16,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:59:16,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:59:16,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:59:16,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:59:16,355 INFO L87 Difference]: Start difference. First operand 55 states and 62 transitions. Second operand has 7 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-02 20:59:29,333 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.44s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:59:32,090 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.76s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-02 20:59:34,362 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.27s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:59:38,356 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.76s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-02 20:59:41,469 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.11s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-02 20:59:44,472 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-02 20:59:47,429 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.96s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-02 20:59:47,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:59:47,429 INFO L93 Difference]: Finished difference Result 69 states and 77 transitions. [2022-11-02 20:59:47,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 20:59:47,671 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 30 [2022-11-02 20:59:47,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:59:47,672 INFO L225 Difference]: With dead ends: 69 [2022-11-02 20:59:47,672 INFO L226 Difference]: Without dead ends: 57 [2022-11-02 20:59:47,672 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 14.4s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:59:47,673 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 72 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 7 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.8s IncrementalHoareTripleChecker+Time [2022-11-02 20:59:47,673 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 158 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 38 Invalid, 7 Unknown, 0 Unchecked, 24.8s Time] [2022-11-02 20:59:47,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-11-02 20:59:47,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2022-11-02 20:59:47,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 51 states have (on average 1.1568627450980393) internal successors, (59), 51 states have internal predecessors, (59), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-02 20:59:47,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 64 transitions. [2022-11-02 20:59:47,683 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 64 transitions. Word has length 30 [2022-11-02 20:59:47,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:59:47,684 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 64 transitions. [2022-11-02 20:59:47,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-02 20:59:47,684 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 64 transitions. [2022-11-02 20:59:47,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-11-02 20:59:47,685 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:59:47,685 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:59:47,798 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eda18b9-d25b-4ed5-a501-9ad702a0beeb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-11-02 20:59:47,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eda18b9-d25b-4ed5-a501-9ad702a0beeb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:59:47,899 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:59:47,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:59:47,899 INFO L85 PathProgramCache]: Analyzing trace with hash 1862870408, now seen corresponding path program 1 times [2022-11-02 20:59:47,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:59:47,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [390567014] [2022-11-02 20:59:47,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:47,899 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:59:47,900 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eda18b9-d25b-4ed5-a501-9ad702a0beeb/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:59:47,900 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eda18b9-d25b-4ed5-a501-9ad702a0beeb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:59:47,902 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eda18b9-d25b-4ed5-a501-9ad702a0beeb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-02 20:59:48,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:48,336 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-02 20:59:48,339 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:59:54,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:59:54,135 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:59:54,135 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:59:54,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [390567014] [2022-11-02 20:59:54,136 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [390567014] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:59:54,136 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:59:54,136 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-02 20:59:54,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365941913] [2022-11-02 20:59:54,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:59:54,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-02 20:59:54,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:59:54,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-02 20:59:54,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2022-11-02 20:59:54,139 INFO L87 Difference]: Start difference. First operand 57 states and 64 transitions. Second operand has 13 states, 13 states have (on average 2.230769230769231) internal successors, (29), 12 states have internal predecessors, (29), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-02 20:59:56,363 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-02 21:00:02,841 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.23s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 21:00:06,274 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 21:00:12,746 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.72s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-02 21:00:15,688 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.94s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-02 21:00:18,610 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.92s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-02 21:00:21,603 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.99s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-02 21:00:24,018 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-02 21:00:26,026 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-02 21:00:26,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:00:26,136 INFO L93 Difference]: Finished difference Result 67 states and 72 transitions. [2022-11-02 21:00:26,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 21:00:26,136 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.230769230769231) internal successors, (29), 12 states have internal predecessors, (29), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 31 [2022-11-02 21:00:26,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:00:26,137 INFO L225 Difference]: With dead ends: 67 [2022-11-02 21:00:26,137 INFO L226 Difference]: Without dead ends: 55 [2022-11-02 21:00:26,137 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 9.0s TimeCoverageRelationStatistics Valid=89, Invalid=373, Unknown=0, NotChecked=0, Total=462 [2022-11-02 21:00:26,138 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 53 mSDsluCounter, 422 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 8 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 466 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 14 IncrementalHoareTripleChecker+Unchecked, 27.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:00:26,138 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 466 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 125 Invalid, 8 Unknown, 14 Unchecked, 27.2s Time] [2022-11-02 21:00:26,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2022-11-02 21:00:26,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 52. [2022-11-02 21:00:26,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 47 states have (on average 1.148936170212766) internal successors, (54), 47 states have internal predecessors, (54), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-02 21:00:26,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 58 transitions. [2022-11-02 21:00:26,141 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 58 transitions. Word has length 31 [2022-11-02 21:00:26,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:00:26,142 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 58 transitions. [2022-11-02 21:00:26,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.230769230769231) internal successors, (29), 12 states have internal predecessors, (29), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-02 21:00:26,142 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 58 transitions. [2022-11-02 21:00:26,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-02 21:00:26,142 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:26,143 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:00:26,164 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eda18b9-d25b-4ed5-a501-9ad702a0beeb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-11-02 21:00:26,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eda18b9-d25b-4ed5-a501-9ad702a0beeb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:00:26,347 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:00:26,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:26,347 INFO L85 PathProgramCache]: Analyzing trace with hash 1615819957, now seen corresponding path program 1 times [2022-11-02 21:00:26,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:00:26,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [745188681] [2022-11-02 21:00:26,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:26,348 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:00:26,348 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eda18b9-d25b-4ed5-a501-9ad702a0beeb/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:00:26,349 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eda18b9-d25b-4ed5-a501-9ad702a0beeb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:00:26,350 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eda18b9-d25b-4ed5-a501-9ad702a0beeb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process