./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/square_8+soft_float_1-3a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c6cedb4-492f-4233-84ad-087fea0aa2cd/bin/uautomizer-w2VwFs6gM0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c6cedb4-492f-4233-84ad-087fea0aa2cd/bin/uautomizer-w2VwFs6gM0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c6cedb4-492f-4233-84ad-087fea0aa2cd/bin/uautomizer-w2VwFs6gM0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c6cedb4-492f-4233-84ad-087fea0aa2cd/bin/uautomizer-w2VwFs6gM0/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/square_8+soft_float_1-3a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c6cedb4-492f-4233-84ad-087fea0aa2cd/bin/uautomizer-w2VwFs6gM0/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c6cedb4-492f-4233-84ad-087fea0aa2cd/bin/uautomizer-w2VwFs6gM0 --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 13801fa2c96f7c93ace2086dcc65f456b83ac056f84901412492a5919d95dd03 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-22 15:32:00,656 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-22 15:32:00,660 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-22 15:32:00,726 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-22 15:32:00,727 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-22 15:32:00,731 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-22 15:32:00,733 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-22 15:32:00,738 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-22 15:32:00,741 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-22 15:32:00,747 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-22 15:32:00,749 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-22 15:32:00,751 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-22 15:32:00,752 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-22 15:32:00,755 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-22 15:32:00,758 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-22 15:32:00,766 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-22 15:32:00,768 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-22 15:32:00,770 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-22 15:32:00,772 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-22 15:32:00,782 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-22 15:32:00,784 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-22 15:32:00,786 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-22 15:32:00,789 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-22 15:32:00,790 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-22 15:32:00,794 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-22 15:32:00,794 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-22 15:32:00,795 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-22 15:32:00,796 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-22 15:32:00,797 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-22 15:32:00,798 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-22 15:32:00,799 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-22 15:32:00,800 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-22 15:32:00,801 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-22 15:32:00,803 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-22 15:32:00,805 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-22 15:32:00,805 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-22 15:32:00,806 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-22 15:32:00,806 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-22 15:32:00,807 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-22 15:32:00,808 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-22 15:32:00,809 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-22 15:32:00,810 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c6cedb4-492f-4233-84ad-087fea0aa2cd/bin/uautomizer-w2VwFs6gM0/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-22 15:32:00,867 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-22 15:32:00,867 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-22 15:32:00,868 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-22 15:32:00,868 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-22 15:32:00,870 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-22 15:32:00,870 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-22 15:32:00,871 INFO L138 SettingsManager]: * Use SBE=true [2021-11-22 15:32:00,871 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-22 15:32:00,871 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-22 15:32:00,871 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-22 15:32:00,872 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-22 15:32:00,873 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-22 15:32:00,873 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-22 15:32:00,873 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-22 15:32:00,873 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-22 15:32:00,874 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-22 15:32:00,874 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-22 15:32:00,874 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-22 15:32:00,874 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-22 15:32:00,875 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-22 15:32:00,875 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-22 15:32:00,882 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-22 15:32:00,882 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 15:32:00,882 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-22 15:32:00,882 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-22 15:32:00,883 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-22 15:32:00,883 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-22 15:32:00,883 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-22 15:32:00,883 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-22 15:32:00,883 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-22 15:32:00,884 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-22 15:32:00,884 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-22 15:32:00,884 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_6c6cedb4-492f-4233-84ad-087fea0aa2cd/bin/uautomizer-w2VwFs6gM0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c6cedb4-492f-4233-84ad-087fea0aa2cd/bin/uautomizer-w2VwFs6gM0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 13801fa2c96f7c93ace2086dcc65f456b83ac056f84901412492a5919d95dd03 [2021-11-22 15:32:01,182 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-22 15:32:01,203 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-22 15:32:01,206 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-22 15:32:01,207 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-22 15:32:01,208 INFO L275 PluginConnector]: CDTParser initialized [2021-11-22 15:32:01,210 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c6cedb4-492f-4233-84ad-087fea0aa2cd/bin/uautomizer-w2VwFs6gM0/../../sv-benchmarks/c/combinations/square_8+soft_float_1-3a.c.cil.c [2021-11-22 15:32:01,275 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c6cedb4-492f-4233-84ad-087fea0aa2cd/bin/uautomizer-w2VwFs6gM0/data/583259060/ad3135a5e09a45898ddf0b193ce9141c/FLAGc2fb68e24 [2021-11-22 15:32:01,878 INFO L306 CDTParser]: Found 1 translation units. [2021-11-22 15:32:01,879 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c6cedb4-492f-4233-84ad-087fea0aa2cd/sv-benchmarks/c/combinations/square_8+soft_float_1-3a.c.cil.c [2021-11-22 15:32:01,898 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c6cedb4-492f-4233-84ad-087fea0aa2cd/bin/uautomizer-w2VwFs6gM0/data/583259060/ad3135a5e09a45898ddf0b193ce9141c/FLAGc2fb68e24 [2021-11-22 15:32:02,150 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c6cedb4-492f-4233-84ad-087fea0aa2cd/bin/uautomizer-w2VwFs6gM0/data/583259060/ad3135a5e09a45898ddf0b193ce9141c [2021-11-22 15:32:02,154 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-22 15:32:02,157 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-22 15:32:02,161 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-22 15:32:02,161 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-22 15:32:02,165 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-22 15:32:02,165 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 03:32:02" (1/1) ... [2021-11-22 15:32:02,168 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@377b1b87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:32:02, skipping insertion in model container [2021-11-22 15:32:02,168 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 03:32:02" (1/1) ... [2021-11-22 15:32:02,175 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-22 15:32:02,227 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-22 15:32:02,425 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_6c6cedb4-492f-4233-84ad-087fea0aa2cd/sv-benchmarks/c/combinations/square_8+soft_float_1-3a.c.cil.c[1995,2008] [2021-11-22 15:32:02,430 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_6c6cedb4-492f-4233-84ad-087fea0aa2cd/sv-benchmarks/c/combinations/square_8+soft_float_1-3a.c.cil.c[2364,2377] [2021-11-22 15:32:02,476 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 15:32:02,484 INFO L203 MainTranslator]: Completed pre-run [2021-11-22 15:32:02,501 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_6c6cedb4-492f-4233-84ad-087fea0aa2cd/sv-benchmarks/c/combinations/square_8+soft_float_1-3a.c.cil.c[1995,2008] [2021-11-22 15:32:02,503 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_6c6cedb4-492f-4233-84ad-087fea0aa2cd/sv-benchmarks/c/combinations/square_8+soft_float_1-3a.c.cil.c[2364,2377] [2021-11-22 15:32:02,536 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 15:32:02,551 INFO L208 MainTranslator]: Completed translation [2021-11-22 15:32:02,551 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:32:02 WrapperNode [2021-11-22 15:32:02,551 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-22 15:32:02,552 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-22 15:32:02,553 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-22 15:32:02,553 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-22 15:32:02,561 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:32:02" (1/1) ... [2021-11-22 15:32:02,572 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:32:02" (1/1) ... [2021-11-22 15:32:02,607 INFO L137 Inliner]: procedures = 27, calls = 21, calls flagged for inlining = 17, calls inlined = 15, statements flattened = 324 [2021-11-22 15:32:02,607 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-22 15:32:02,608 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-22 15:32:02,608 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-22 15:32:02,608 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-22 15:32:02,621 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:32:02" (1/1) ... [2021-11-22 15:32:02,621 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:32:02" (1/1) ... [2021-11-22 15:32:02,625 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:32:02" (1/1) ... [2021-11-22 15:32:02,626 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:32:02" (1/1) ... [2021-11-22 15:32:02,651 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:32:02" (1/1) ... [2021-11-22 15:32:02,658 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:32:02" (1/1) ... [2021-11-22 15:32:02,661 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:32:02" (1/1) ... [2021-11-22 15:32:02,665 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-22 15:32:02,666 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-22 15:32:02,666 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-22 15:32:02,666 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-22 15:32:02,667 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:32:02" (1/1) ... [2021-11-22 15:32:02,675 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 15:32:02,688 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c6cedb4-492f-4233-84ad-087fea0aa2cd/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:32:02,701 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c6cedb4-492f-4233-84ad-087fea0aa2cd/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-22 15:32:02,710 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c6cedb4-492f-4233-84ad-087fea0aa2cd/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-22 15:32:02,744 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-22 15:32:02,744 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-22 15:32:02,744 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-22 15:32:02,744 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-22 15:32:02,825 INFO L236 CfgBuilder]: Building ICFG [2021-11-22 15:32:02,827 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-22 15:32:03,273 INFO L277 CfgBuilder]: Performing block encoding [2021-11-22 15:32:03,281 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-22 15:32:03,282 INFO L301 CfgBuilder]: Removed 6 assume(true) statements. [2021-11-22 15:32:03,284 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 03:32:03 BoogieIcfgContainer [2021-11-22 15:32:03,284 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-22 15:32:03,286 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-22 15:32:03,286 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-22 15:32:03,289 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-22 15:32:03,290 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 03:32:02" (1/3) ... [2021-11-22 15:32:03,290 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@260d62e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 03:32:03, skipping insertion in model container [2021-11-22 15:32:03,291 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:32:02" (2/3) ... [2021-11-22 15:32:03,291 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@260d62e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 03:32:03, skipping insertion in model container [2021-11-22 15:32:03,291 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 03:32:03" (3/3) ... [2021-11-22 15:32:03,293 INFO L111 eAbstractionObserver]: Analyzing ICFG square_8+soft_float_1-3a.c.cil.c [2021-11-22 15:32:03,298 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-22 15:32:03,298 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2021-11-22 15:32:03,348 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-22 15:32:03,355 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-22 15:32:03,355 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-11-22 15:32:03,385 INFO L276 IsEmpty]: Start isEmpty. Operand has 108 states, 100 states have (on average 1.69) internal successors, (169), 107 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:32:03,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-22 15:32:03,392 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:32:03,393 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:32:03,394 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-22 15:32:03,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:32:03,405 INFO L85 PathProgramCache]: Analyzing trace with hash 1804936583, now seen corresponding path program 1 times [2021-11-22 15:32:03,414 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:32:03,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403302035] [2021-11-22 15:32:03,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:32:03,416 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:32:03,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:32:03,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:32:03,575 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:32:03,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403302035] [2021-11-22 15:32:03,576 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403302035] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:32:03,576 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:32:03,577 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-22 15:32:03,578 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244359361] [2021-11-22 15:32:03,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:32:03,584 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-22 15:32:03,584 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:32:03,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-22 15:32:03,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-22 15:32:03,633 INFO L87 Difference]: Start difference. First operand has 108 states, 100 states have (on average 1.69) internal successors, (169), 107 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:32:03,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:32:03,694 INFO L93 Difference]: Finished difference Result 204 states and 314 transitions. [2021-11-22 15:32:03,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-22 15:32:03,697 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 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 7 [2021-11-22 15:32:03,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:32:03,712 INFO L225 Difference]: With dead ends: 204 [2021-11-22 15:32:03,713 INFO L226 Difference]: Without dead ends: 100 [2021-11-22 15:32:03,718 INFO L932 BasicCegarLoop]: 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 [2021-11-22 15:32:03,724 INFO L933 BasicCegarLoop]: 149 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, 149 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 [2021-11-22 15:32:03,726 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:32:03,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2021-11-22 15:32:03,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2021-11-22 15:32:03,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 93 states have (on average 1.4946236559139785) internal successors, (139), 99 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:32:03,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 139 transitions. [2021-11-22 15:32:03,789 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 139 transitions. Word has length 7 [2021-11-22 15:32:03,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:32:03,790 INFO L470 AbstractCegarLoop]: Abstraction has 100 states and 139 transitions. [2021-11-22 15:32:03,790 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:32:03,790 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 139 transitions. [2021-11-22 15:32:03,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-22 15:32:03,791 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:32:03,791 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:32:03,791 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-22 15:32:03,791 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-22 15:32:03,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:32:03,792 INFO L85 PathProgramCache]: Analyzing trace with hash 1804996165, now seen corresponding path program 1 times [2021-11-22 15:32:03,793 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:32:03,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380969055] [2021-11-22 15:32:03,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:32:03,793 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:32:03,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-22 15:32:03,806 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-22 15:32:03,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-22 15:32:03,834 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-22 15:32:03,834 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-22 15:32:03,836 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (6 of 7 remaining) [2021-11-22 15:32:03,839 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2021-11-22 15:32:03,839 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (4 of 7 remaining) [2021-11-22 15:32:03,839 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (3 of 7 remaining) [2021-11-22 15:32:03,840 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (2 of 7 remaining) [2021-11-22 15:32:03,840 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (1 of 7 remaining) [2021-11-22 15:32:03,840 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2021-11-22 15:32:03,841 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-22 15:32:03,845 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-11-22 15:32:03,848 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-22 15:32:03,870 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 03:32:03 BoogieIcfgContainer [2021-11-22 15:32:03,870 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-22 15:32:03,871 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-22 15:32:03,871 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-22 15:32:03,871 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-22 15:32:03,872 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 03:32:03" (3/4) ... [2021-11-22 15:32:03,875 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-22 15:32:03,875 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-22 15:32:03,876 INFO L158 Benchmark]: Toolchain (without parser) took 1719.07ms. Allocated memory was 75.5MB in the beginning and 96.5MB in the end (delta: 21.0MB). Free memory was 49.7MB in the beginning and 44.3MB in the end (delta: 5.4MB). Peak memory consumption was 25.1MB. Max. memory is 16.1GB. [2021-11-22 15:32:03,877 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 75.5MB. Free memory was 47.0MB in the beginning and 46.9MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-22 15:32:03,878 INFO L158 Benchmark]: CACSL2BoogieTranslator took 390.81ms. Allocated memory was 75.5MB in the beginning and 96.5MB in the end (delta: 21.0MB). Free memory was 49.5MB in the beginning and 63.8MB in the end (delta: -14.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-22 15:32:03,878 INFO L158 Benchmark]: Boogie Procedure Inliner took 55.10ms. Allocated memory is still 96.5MB. Free memory was 63.6MB in the beginning and 61.3MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-22 15:32:03,879 INFO L158 Benchmark]: Boogie Preprocessor took 57.10ms. Allocated memory is still 96.5MB. Free memory was 61.1MB in the beginning and 59.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-22 15:32:03,880 INFO L158 Benchmark]: RCFGBuilder took 618.16ms. Allocated memory is still 96.5MB. Free memory was 59.4MB in the beginning and 69.5MB in the end (delta: -10.1MB). Peak memory consumption was 18.3MB. Max. memory is 16.1GB. [2021-11-22 15:32:03,880 INFO L158 Benchmark]: TraceAbstraction took 584.78ms. Allocated memory is still 96.5MB. Free memory was 68.9MB in the beginning and 44.8MB in the end (delta: 24.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2021-11-22 15:32:03,881 INFO L158 Benchmark]: Witness Printer took 4.23ms. Allocated memory is still 96.5MB. Free memory was 44.8MB in the beginning and 44.3MB in the end (delta: 471.6kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-22 15:32:03,884 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 75.5MB. Free memory was 47.0MB in the beginning and 46.9MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 390.81ms. Allocated memory was 75.5MB in the beginning and 96.5MB in the end (delta: 21.0MB). Free memory was 49.5MB in the beginning and 63.8MB in the end (delta: -14.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 55.10ms. Allocated memory is still 96.5MB. Free memory was 63.6MB in the beginning and 61.3MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 57.10ms. Allocated memory is still 96.5MB. Free memory was 61.1MB in the beginning and 59.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 618.16ms. Allocated memory is still 96.5MB. Free memory was 59.4MB in the beginning and 69.5MB in the end (delta: -10.1MB). Peak memory consumption was 18.3MB. Max. memory is 16.1GB. * TraceAbstraction took 584.78ms. Allocated memory is still 96.5MB. Free memory was 68.9MB in the beginning and 44.8MB in the end (delta: 24.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Witness Printer took 4.23ms. Allocated memory is still 96.5MB. Free memory was 44.8MB in the beginning and 44.3MB in the end (delta: 471.6kB). 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: 48]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 47, overapproximation of someBinaryArithmeticFLOAToperation at line 45. Possible FailurePath: [L402] COND TRUE __VERIFIER_nondet_int() [L403] CALL main1() [L39] float IN = __VERIFIER_nondet_float(); [L40] CALL assume_abort_if_not(IN >= 0.0f && IN < 1.0f) [L34] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L40] RET assume_abort_if_not(IN >= 0.0f && IN < 1.0f) [L42] float x = IN; [L44-L45] float result = 1.0f + 0.5f*x - 0.125f*x*x + 0.0625f*x*x*x - 0.0390625f*x*x*x*x; VAL [IN=49, x=49] [L47] COND TRUE !(result >= 0.0f && result < 1.5f) VAL [IN=49, x=49] [L48] reach_error() VAL [IN=49, x=49] - UnprovableResult [Line: 60]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 60]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 60]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 60]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 60]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 60]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 108 locations, 7 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 149 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, 149 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=108occurred 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, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 6 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 [2021-11-22 15:32:03,934 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c6cedb4-492f-4233-84ad-087fea0aa2cd/bin/uautomizer-w2VwFs6gM0/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/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c6cedb4-492f-4233-84ad-087fea0aa2cd/bin/uautomizer-w2VwFs6gM0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c6cedb4-492f-4233-84ad-087fea0aa2cd/bin/uautomizer-w2VwFs6gM0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c6cedb4-492f-4233-84ad-087fea0aa2cd/bin/uautomizer-w2VwFs6gM0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c6cedb4-492f-4233-84ad-087fea0aa2cd/bin/uautomizer-w2VwFs6gM0/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/square_8+soft_float_1-3a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c6cedb4-492f-4233-84ad-087fea0aa2cd/bin/uautomizer-w2VwFs6gM0/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c6cedb4-492f-4233-84ad-087fea0aa2cd/bin/uautomizer-w2VwFs6gM0 --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 13801fa2c96f7c93ace2086dcc65f456b83ac056f84901412492a5919d95dd03 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-22 15:32:06,547 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-22 15:32:06,549 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-22 15:32:06,582 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-22 15:32:06,583 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-22 15:32:06,584 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-22 15:32:06,586 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-22 15:32:06,589 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-22 15:32:06,591 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-22 15:32:06,592 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-22 15:32:06,593 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-22 15:32:06,595 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-22 15:32:06,596 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-22 15:32:06,597 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-22 15:32:06,598 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-22 15:32:06,600 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-22 15:32:06,601 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-22 15:32:06,603 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-22 15:32:06,614 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-22 15:32:06,616 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-22 15:32:06,623 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-22 15:32:06,626 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-22 15:32:06,628 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-22 15:32:06,629 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-22 15:32:06,634 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-22 15:32:06,640 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-22 15:32:06,641 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-22 15:32:06,642 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-22 15:32:06,644 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-22 15:32:06,645 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-22 15:32:06,646 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-22 15:32:06,647 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-22 15:32:06,649 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-22 15:32:06,650 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-22 15:32:06,654 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-22 15:32:06,655 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-22 15:32:06,656 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-22 15:32:06,656 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-22 15:32:06,657 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-22 15:32:06,659 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-22 15:32:06,659 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-22 15:32:06,665 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c6cedb4-492f-4233-84ad-087fea0aa2cd/bin/uautomizer-w2VwFs6gM0/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-11-22 15:32:06,701 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-22 15:32:06,702 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-22 15:32:06,702 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-22 15:32:06,703 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-22 15:32:06,704 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-22 15:32:06,704 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-22 15:32:06,704 INFO L138 SettingsManager]: * Use SBE=true [2021-11-22 15:32:06,705 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-22 15:32:06,705 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-22 15:32:06,705 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-22 15:32:06,705 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-22 15:32:06,706 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-22 15:32:06,706 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-22 15:32:06,706 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-22 15:32:06,706 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-22 15:32:06,707 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-22 15:32:06,707 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-22 15:32:06,707 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-22 15:32:06,707 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-22 15:32:06,708 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-22 15:32:06,708 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-22 15:32:06,708 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-22 15:32:06,708 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-22 15:32:06,709 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-22 15:32:06,709 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 15:32:06,709 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-22 15:32:06,709 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-22 15:32:06,710 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-22 15:32:06,710 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-22 15:32:06,710 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-22 15:32:06,710 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-22 15:32:06,711 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-22 15:32:06,711 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-22 15:32:06,711 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-22 15:32:06,711 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-22 15:32:06,712 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_6c6cedb4-492f-4233-84ad-087fea0aa2cd/bin/uautomizer-w2VwFs6gM0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c6cedb4-492f-4233-84ad-087fea0aa2cd/bin/uautomizer-w2VwFs6gM0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 13801fa2c96f7c93ace2086dcc65f456b83ac056f84901412492a5919d95dd03 [2021-11-22 15:32:07,037 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-22 15:32:07,058 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-22 15:32:07,061 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-22 15:32:07,062 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-22 15:32:07,066 INFO L275 PluginConnector]: CDTParser initialized [2021-11-22 15:32:07,068 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c6cedb4-492f-4233-84ad-087fea0aa2cd/bin/uautomizer-w2VwFs6gM0/../../sv-benchmarks/c/combinations/square_8+soft_float_1-3a.c.cil.c [2021-11-22 15:32:07,147 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c6cedb4-492f-4233-84ad-087fea0aa2cd/bin/uautomizer-w2VwFs6gM0/data/7246452cd/f8b0889768804b4c8f335ef9a21f2db5/FLAGa3be52475 [2021-11-22 15:32:07,762 INFO L306 CDTParser]: Found 1 translation units. [2021-11-22 15:32:07,762 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c6cedb4-492f-4233-84ad-087fea0aa2cd/sv-benchmarks/c/combinations/square_8+soft_float_1-3a.c.cil.c [2021-11-22 15:32:07,779 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c6cedb4-492f-4233-84ad-087fea0aa2cd/bin/uautomizer-w2VwFs6gM0/data/7246452cd/f8b0889768804b4c8f335ef9a21f2db5/FLAGa3be52475 [2021-11-22 15:32:08,117 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c6cedb4-492f-4233-84ad-087fea0aa2cd/bin/uautomizer-w2VwFs6gM0/data/7246452cd/f8b0889768804b4c8f335ef9a21f2db5 [2021-11-22 15:32:08,121 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-22 15:32:08,122 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-22 15:32:08,139 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-22 15:32:08,139 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-22 15:32:08,143 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-22 15:32:08,144 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 03:32:08" (1/1) ... [2021-11-22 15:32:08,145 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32bd56c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:32:08, skipping insertion in model container [2021-11-22 15:32:08,145 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 03:32:08" (1/1) ... [2021-11-22 15:32:08,154 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-22 15:32:08,190 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-22 15:32:08,402 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_6c6cedb4-492f-4233-84ad-087fea0aa2cd/sv-benchmarks/c/combinations/square_8+soft_float_1-3a.c.cil.c[1995,2008] [2021-11-22 15:32:08,411 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_6c6cedb4-492f-4233-84ad-087fea0aa2cd/sv-benchmarks/c/combinations/square_8+soft_float_1-3a.c.cil.c[2364,2377] [2021-11-22 15:32:08,486 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 15:32:08,498 INFO L203 MainTranslator]: Completed pre-run [2021-11-22 15:32:08,521 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_6c6cedb4-492f-4233-84ad-087fea0aa2cd/sv-benchmarks/c/combinations/square_8+soft_float_1-3a.c.cil.c[1995,2008] [2021-11-22 15:32:08,529 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_6c6cedb4-492f-4233-84ad-087fea0aa2cd/sv-benchmarks/c/combinations/square_8+soft_float_1-3a.c.cil.c[2364,2377] [2021-11-22 15:32:08,577 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 15:32:08,604 INFO L208 MainTranslator]: Completed translation [2021-11-22 15:32:08,605 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:32:08 WrapperNode [2021-11-22 15:32:08,605 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-22 15:32:08,606 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-22 15:32:08,606 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-22 15:32:08,606 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-22 15:32:08,614 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:32:08" (1/1) ... [2021-11-22 15:32:08,644 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:32:08" (1/1) ... [2021-11-22 15:32:08,706 INFO L137 Inliner]: procedures = 28, calls = 21, calls flagged for inlining = 17, calls inlined = 15, statements flattened = 320 [2021-11-22 15:32:08,707 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-22 15:32:08,707 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-22 15:32:08,707 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-22 15:32:08,708 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-22 15:32:08,719 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:32:08" (1/1) ... [2021-11-22 15:32:08,720 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:32:08" (1/1) ... [2021-11-22 15:32:08,729 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:32:08" (1/1) ... [2021-11-22 15:32:08,730 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:32:08" (1/1) ... [2021-11-22 15:32:08,756 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:32:08" (1/1) ... [2021-11-22 15:32:08,788 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:32:08" (1/1) ... [2021-11-22 15:32:08,791 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:32:08" (1/1) ... [2021-11-22 15:32:08,796 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-22 15:32:08,797 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-22 15:32:08,797 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-22 15:32:08,797 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-22 15:32:08,798 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:32:08" (1/1) ... [2021-11-22 15:32:08,819 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 15:32:08,833 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c6cedb4-492f-4233-84ad-087fea0aa2cd/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:32:08,847 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c6cedb4-492f-4233-84ad-087fea0aa2cd/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-22 15:32:08,852 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c6cedb4-492f-4233-84ad-087fea0aa2cd/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-22 15:32:08,891 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-22 15:32:08,891 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-22 15:32:08,891 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-22 15:32:08,891 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-22 15:32:08,981 INFO L236 CfgBuilder]: Building ICFG [2021-11-22 15:32:08,983 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-22 15:32:11,847 INFO L277 CfgBuilder]: Performing block encoding [2021-11-22 15:32:11,856 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-22 15:32:11,856 INFO L301 CfgBuilder]: Removed 6 assume(true) statements. [2021-11-22 15:32:11,858 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 03:32:11 BoogieIcfgContainer [2021-11-22 15:32:11,858 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-22 15:32:11,860 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-22 15:32:11,860 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-22 15:32:11,863 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-22 15:32:11,863 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 03:32:08" (1/3) ... [2021-11-22 15:32:11,864 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f96615a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 03:32:11, skipping insertion in model container [2021-11-22 15:32:11,864 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:32:08" (2/3) ... [2021-11-22 15:32:11,865 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f96615a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 03:32:11, skipping insertion in model container [2021-11-22 15:32:11,865 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 03:32:11" (3/3) ... [2021-11-22 15:32:11,870 INFO L111 eAbstractionObserver]: Analyzing ICFG square_8+soft_float_1-3a.c.cil.c [2021-11-22 15:32:11,874 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-22 15:32:11,874 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2021-11-22 15:32:11,917 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-22 15:32:11,924 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-22 15:32:11,924 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-11-22 15:32:11,941 INFO L276 IsEmpty]: Start isEmpty. Operand has 108 states, 100 states have (on average 1.69) internal successors, (169), 107 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:32:11,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-22 15:32:11,947 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:32:11,947 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:32:11,948 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-22 15:32:11,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:32:11,954 INFO L85 PathProgramCache]: Analyzing trace with hash 1804936583, now seen corresponding path program 1 times [2021-11-22 15:32:11,965 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 15:32:11,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1416530877] [2021-11-22 15:32:11,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:32:11,967 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 15:32:11,967 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c6cedb4-492f-4233-84ad-087fea0aa2cd/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 15:32:11,973 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c6cedb4-492f-4233-84ad-087fea0aa2cd/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 15:32:11,976 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c6cedb4-492f-4233-84ad-087fea0aa2cd/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-22 15:32:12,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:32:12,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-22 15:32:12,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:32:12,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:32:12,549 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:32:12,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:32:12,577 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 15:32:12,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1416530877] [2021-11-22 15:32:12,579 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1416530877] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 15:32:12,579 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:32:12,579 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-22 15:32:12,581 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555826740] [2021-11-22 15:32:12,582 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 15:32:12,586 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-22 15:32:12,586 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 15:32:12,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-22 15:32:12,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-22 15:32:12,619 INFO L87 Difference]: Start difference. First operand has 108 states, 100 states have (on average 1.69) internal successors, (169), 107 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:32:12,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:32:12,659 INFO L93 Difference]: Finished difference Result 204 states and 314 transitions. [2021-11-22 15:32:12,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-22 15:32:12,661 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 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 7 [2021-11-22 15:32:12,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:32:12,671 INFO L225 Difference]: With dead ends: 204 [2021-11-22 15:32:12,671 INFO L226 Difference]: Without dead ends: 100 [2021-11-22 15:32:12,675 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-22 15:32:12,678 INFO L933 BasicCegarLoop]: 149 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, 149 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 [2021-11-22 15:32:12,680 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:32:12,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2021-11-22 15:32:12,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2021-11-22 15:32:12,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 93 states have (on average 1.4946236559139785) internal successors, (139), 99 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:32:12,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 139 transitions. [2021-11-22 15:32:12,722 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 139 transitions. Word has length 7 [2021-11-22 15:32:12,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:32:12,723 INFO L470 AbstractCegarLoop]: Abstraction has 100 states and 139 transitions. [2021-11-22 15:32:12,723 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:32:12,724 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 139 transitions. [2021-11-22 15:32:12,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-22 15:32:12,724 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:32:12,725 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:32:12,749 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c6cedb4-492f-4233-84ad-087fea0aa2cd/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-22 15:32:12,944 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c6cedb4-492f-4233-84ad-087fea0aa2cd/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 15:32:12,945 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-22 15:32:12,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:32:12,946 INFO L85 PathProgramCache]: Analyzing trace with hash 1804996165, now seen corresponding path program 1 times [2021-11-22 15:32:12,947 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 15:32:12,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1113948235] [2021-11-22 15:32:12,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:32:12,948 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 15:32:12,948 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c6cedb4-492f-4233-84ad-087fea0aa2cd/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 15:32:12,949 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c6cedb4-492f-4233-84ad-087fea0aa2cd/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 15:32:12,953 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c6cedb4-492f-4233-84ad-087fea0aa2cd/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-22 15:32:28,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:32:28,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-22 15:32:28,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:32:43,535 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((|ULTIMATE.start_main1_~IN~0#1| (_ FloatingPoint 8 24))) (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (and (fp.geq |ULTIMATE.start_main1_~IN~0#1| (_ +zero 8 24)) (fp.lt |ULTIMATE.start_main1_~IN~0#1| .cse0) (= |c_ULTIMATE.start_main1_~result~0#1| (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode .cse0 (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 2.0)) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 8.0)) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 16.0)) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 128.0)) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2021-11-22 15:33:33,940 WARN L838 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_main1_~IN~0#1| (_ FloatingPoint 8 24))) (let ((.cse1 ((_ to_fp 8 24) roundNearestTiesToEven 1.0))) (and (let ((.cse0 (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven .cse1 (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 2.0)) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 8.0)) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 16.0)) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 128.0)) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)))) (or (not (fp.lt .cse0 ((_ to_fp 8 24) roundNearestTiesToEven (/ 3.0 2.0)))) (not (fp.geq .cse0 (_ +zero 8 24))))) (fp.geq |ULTIMATE.start_main1_~IN~0#1| (_ +zero 8 24)) (fp.lt |ULTIMATE.start_main1_~IN~0#1| .cse1)))) is different from false [2021-11-22 15:33:35,992 WARN L860 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_main1_~IN~0#1| (_ FloatingPoint 8 24))) (let ((.cse1 ((_ to_fp 8 24) roundNearestTiesToEven 1.0))) (and (let ((.cse0 (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven .cse1 (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 2.0)) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 8.0)) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 16.0)) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 128.0)) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)))) (or (not (fp.lt .cse0 ((_ to_fp 8 24) roundNearestTiesToEven (/ 3.0 2.0)))) (not (fp.geq .cse0 (_ +zero 8 24))))) (fp.geq |ULTIMATE.start_main1_~IN~0#1| (_ +zero 8 24)) (fp.lt |ULTIMATE.start_main1_~IN~0#1| .cse1)))) is different from true [2021-11-22 15:33:35,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:33:35,993 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:33:46,724 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 2.0)) |c_ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 8.0)) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 16.0)) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 128.0)) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|)))) (and (fp.geq .cse0 (_ +zero 8 24)) (fp.lt .cse0 ((_ to_fp 8 24) c_currentRoundingMode (/ 3.0 2.0))))) is different from false [2021-11-22 15:33:48,809 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 2.0)) |c_ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 8.0)) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 16.0)) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 128.0)) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|)))) (and (fp.geq .cse0 (_ +zero 8 24)) (fp.lt .cse0 ((_ to_fp 8 24) c_currentRoundingMode (/ 3.0 2.0))))) is different from true [2021-11-22 15:34:03,683 WARN L838 $PredicateComparison]: unable to prove that (or (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| (_ bv0 32)) (let ((.cse0 (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 2.0)) |c_ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 8.0)) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 16.0)) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 128.0)) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|)))) (and (fp.geq .cse0 (_ +zero 8 24)) (fp.lt .cse0 ((_ to_fp 8 24) c_currentRoundingMode (/ 3.0 2.0)))))) is different from false [2021-11-22 15:34:05,766 WARN L860 $PredicateComparison]: unable to prove that (or (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| (_ bv0 32)) (let ((.cse0 (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 2.0)) |c_ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 8.0)) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 16.0)) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 128.0)) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|)))) (and (fp.geq .cse0 (_ +zero 8 24)) (fp.lt .cse0 ((_ to_fp 8 24) c_currentRoundingMode (/ 3.0 2.0)))))) is different from true [2021-11-22 15:34:50,309 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main1_~IN~0#1_4| (_ FloatingPoint 8 24))) (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (or (not (fp.lt |v_ULTIMATE.start_main1_~IN~0#1_4| .cse0)) (not (fp.geq |v_ULTIMATE.start_main1_~IN~0#1_4| (_ +zero 8 24))) (let ((.cse1 (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode .cse0 (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 2.0)) |v_ULTIMATE.start_main1_~IN~0#1_4|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 8.0)) |v_ULTIMATE.start_main1_~IN~0#1_4|) |v_ULTIMATE.start_main1_~IN~0#1_4|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 16.0)) |v_ULTIMATE.start_main1_~IN~0#1_4|) |v_ULTIMATE.start_main1_~IN~0#1_4|) |v_ULTIMATE.start_main1_~IN~0#1_4|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 128.0)) |v_ULTIMATE.start_main1_~IN~0#1_4|) |v_ULTIMATE.start_main1_~IN~0#1_4|) |v_ULTIMATE.start_main1_~IN~0#1_4|) |v_ULTIMATE.start_main1_~IN~0#1_4|)))) (and (fp.lt .cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 3.0 2.0))) (fp.geq .cse1 (_ +zero 8 24))))))) is different from false [2021-11-22 15:34:52,386 WARN L860 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main1_~IN~0#1_4| (_ FloatingPoint 8 24))) (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (or (not (fp.lt |v_ULTIMATE.start_main1_~IN~0#1_4| .cse0)) (not (fp.geq |v_ULTIMATE.start_main1_~IN~0#1_4| (_ +zero 8 24))) (let ((.cse1 (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode .cse0 (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 2.0)) |v_ULTIMATE.start_main1_~IN~0#1_4|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 8.0)) |v_ULTIMATE.start_main1_~IN~0#1_4|) |v_ULTIMATE.start_main1_~IN~0#1_4|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 16.0)) |v_ULTIMATE.start_main1_~IN~0#1_4|) |v_ULTIMATE.start_main1_~IN~0#1_4|) |v_ULTIMATE.start_main1_~IN~0#1_4|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 128.0)) |v_ULTIMATE.start_main1_~IN~0#1_4|) |v_ULTIMATE.start_main1_~IN~0#1_4|) |v_ULTIMATE.start_main1_~IN~0#1_4|) |v_ULTIMATE.start_main1_~IN~0#1_4|)))) (and (fp.lt .cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 3.0 2.0))) (fp.geq .cse1 (_ +zero 8 24))))))) is different from true [2021-11-22 15:35:34,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:35:34,896 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 15:35:34,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1113948235] [2021-11-22 15:35:34,896 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1113948235] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 15:35:34,896 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:35:34,897 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 10 [2021-11-22 15:35:34,897 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803321137] [2021-11-22 15:35:34,897 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 15:35:34,899 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-22 15:35:34,899 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 15:35:34,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-22 15:35:34,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=20, Unknown=9, NotChecked=60, Total=110 [2021-11-22 15:35:34,900 INFO L87 Difference]: Start difference. First operand 100 states and 139 transitions. Second operand has 11 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 10 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) [2021-11-22 15:35:36,987 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|v_ULTIMATE.start_main1_~IN~0#1_4| (_ FloatingPoint 8 24))) (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (or (not (fp.lt |v_ULTIMATE.start_main1_~IN~0#1_4| .cse0)) (not (fp.geq |v_ULTIMATE.start_main1_~IN~0#1_4| (_ +zero 8 24))) (let ((.cse1 (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode .cse0 (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 2.0)) |v_ULTIMATE.start_main1_~IN~0#1_4|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 8.0)) |v_ULTIMATE.start_main1_~IN~0#1_4|) |v_ULTIMATE.start_main1_~IN~0#1_4|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 16.0)) |v_ULTIMATE.start_main1_~IN~0#1_4|) |v_ULTIMATE.start_main1_~IN~0#1_4|) |v_ULTIMATE.start_main1_~IN~0#1_4|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 128.0)) |v_ULTIMATE.start_main1_~IN~0#1_4|) |v_ULTIMATE.start_main1_~IN~0#1_4|) |v_ULTIMATE.start_main1_~IN~0#1_4|) |v_ULTIMATE.start_main1_~IN~0#1_4|)))) (and (fp.lt .cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 3.0 2.0))) (fp.geq .cse1 (_ +zero 8 24))))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2021-11-22 15:35:39,061 WARN L860 $PredicateComparison]: unable to prove that (and (forall ((|v_ULTIMATE.start_main1_~IN~0#1_4| (_ FloatingPoint 8 24))) (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (or (not (fp.lt |v_ULTIMATE.start_main1_~IN~0#1_4| .cse0)) (not (fp.geq |v_ULTIMATE.start_main1_~IN~0#1_4| (_ +zero 8 24))) (let ((.cse1 (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode .cse0 (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 2.0)) |v_ULTIMATE.start_main1_~IN~0#1_4|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 8.0)) |v_ULTIMATE.start_main1_~IN~0#1_4|) |v_ULTIMATE.start_main1_~IN~0#1_4|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 16.0)) |v_ULTIMATE.start_main1_~IN~0#1_4|) |v_ULTIMATE.start_main1_~IN~0#1_4|) |v_ULTIMATE.start_main1_~IN~0#1_4|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 128.0)) |v_ULTIMATE.start_main1_~IN~0#1_4|) |v_ULTIMATE.start_main1_~IN~0#1_4|) |v_ULTIMATE.start_main1_~IN~0#1_4|) |v_ULTIMATE.start_main1_~IN~0#1_4|)))) (and (fp.lt .cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 3.0 2.0))) (fp.geq .cse1 (_ +zero 8 24))))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-11-22 15:35:41,137 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse2 (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| (_ bv0 32))) (.cse3 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (and (= c_currentRoundingMode roundNearestTiesToEven) (let ((.cse0 (fp.geq |c_ULTIMATE.start_main1_~IN~0#1| (_ +zero 8 24))) (.cse1 (fp.lt |c_ULTIMATE.start_main1_~IN~0#1| .cse3))) (or (and .cse0 .cse1 (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| (_ bv1 32))) (and .cse2 (or (not .cse0) (not .cse1))))) (or .cse2 (let ((.cse4 (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode .cse3 (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 2.0)) |c_ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 8.0)) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 16.0)) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 128.0)) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|)))) (and (fp.geq .cse4 (_ +zero 8 24)) (fp.lt .cse4 ((_ to_fp 8 24) c_currentRoundingMode (/ 3.0 2.0)))))))) is different from false [2021-11-22 15:35:43,226 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse2 (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| (_ bv0 32))) (.cse3 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (and (= c_currentRoundingMode roundNearestTiesToEven) (let ((.cse0 (fp.geq |c_ULTIMATE.start_main1_~IN~0#1| (_ +zero 8 24))) (.cse1 (fp.lt |c_ULTIMATE.start_main1_~IN~0#1| .cse3))) (or (and .cse0 .cse1 (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| (_ bv1 32))) (and .cse2 (or (not .cse0) (not .cse1))))) (or .cse2 (let ((.cse4 (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode .cse3 (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 2.0)) |c_ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 8.0)) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 16.0)) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 128.0)) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|)))) (and (fp.geq .cse4 (_ +zero 8 24)) (fp.lt .cse4 ((_ to_fp 8 24) c_currentRoundingMode (/ 3.0 2.0)))))))) is different from true [2021-11-22 15:35:45,304 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (let ((.cse0 (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode .cse1 (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 2.0)) |c_ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 8.0)) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 16.0)) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 128.0)) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|)))) (and (fp.geq .cse0 (_ +zero 8 24)) (fp.geq |c_ULTIMATE.start_main1_~IN~0#1| (_ +zero 8 24)) (fp.lt |c_ULTIMATE.start_main1_~IN~0#1| .cse1) (fp.lt .cse0 ((_ to_fp 8 24) c_currentRoundingMode (/ 3.0 2.0))) (= c_currentRoundingMode roundNearestTiesToEven)))) is different from false [2021-11-22 15:35:47,385 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (let ((.cse0 (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode .cse1 (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 2.0)) |c_ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 8.0)) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 16.0)) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 128.0)) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|)))) (and (fp.geq .cse0 (_ +zero 8 24)) (fp.geq |c_ULTIMATE.start_main1_~IN~0#1| (_ +zero 8 24)) (fp.lt |c_ULTIMATE.start_main1_~IN~0#1| .cse1) (fp.lt .cse0 ((_ to_fp 8 24) c_currentRoundingMode (/ 3.0 2.0))) (= c_currentRoundingMode roundNearestTiesToEven)))) is different from true [2021-11-22 15:35:49,472 WARN L838 $PredicateComparison]: unable to prove that (and (fp.geq |c_ULTIMATE.start_main1_~result~0#1| (_ +zero 8 24)) (exists ((|ULTIMATE.start_main1_~IN~0#1| (_ FloatingPoint 8 24))) (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (and (fp.geq |ULTIMATE.start_main1_~IN~0#1| (_ +zero 8 24)) (fp.lt |ULTIMATE.start_main1_~IN~0#1| .cse0) (= |c_ULTIMATE.start_main1_~result~0#1| (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode .cse0 (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 2.0)) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 8.0)) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 16.0)) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 128.0)) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)))))) (fp.lt |c_ULTIMATE.start_main1_~result~0#1| ((_ to_fp 8 24) c_currentRoundingMode (/ 3.0 2.0))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2021-11-22 15:35:49,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:35:49,512 INFO L93 Difference]: Finished difference Result 100 states and 139 transitions. [2021-11-22 15:35:49,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-22 15:35:49,513 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 10 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 7 [2021-11-22 15:35:49,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:35:49,515 INFO L225 Difference]: With dead ends: 100 [2021-11-22 15:35:49,515 INFO L226 Difference]: Without dead ends: 95 [2021-11-22 15:35:49,516 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 9 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 33.5s TimeCoverageRelationStatistics Valid=29, Invalid=21, Unknown=16, NotChecked=144, Total=210 [2021-11-22 15:35:49,518 INFO L933 BasicCegarLoop]: 132 mSDtfsCounter, 0 mSDsluCounter, 524 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 656 SdHoareTripleChecker+Invalid, 536 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 533 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:35:49,519 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 656 Invalid, 536 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 533 Unchecked, 0.0s Time] [2021-11-22 15:35:49,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2021-11-22 15:35:49,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2021-11-22 15:35:49,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 89 states have (on average 1.5056179775280898) internal successors, (134), 94 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:35:49,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 134 transitions. [2021-11-22 15:35:49,538 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 134 transitions. Word has length 7 [2021-11-22 15:35:49,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:35:49,538 INFO L470 AbstractCegarLoop]: Abstraction has 95 states and 134 transitions. [2021-11-22 15:35:49,538 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 10 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) [2021-11-22 15:35:49,539 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 134 transitions. [2021-11-22 15:35:49,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-22 15:35:49,540 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:35:49,540 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:35:49,567 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c6cedb4-492f-4233-84ad-087fea0aa2cd/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-22 15:35:49,754 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c6cedb4-492f-4233-84ad-087fea0aa2cd/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 15:35:49,758 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-22 15:35:49,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:35:49,758 INFO L85 PathProgramCache]: Analyzing trace with hash -409944249, now seen corresponding path program 1 times [2021-11-22 15:35:49,759 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 15:35:49,759 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [480633112] [2021-11-22 15:35:49,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:35:49,760 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 15:35:49,760 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c6cedb4-492f-4233-84ad-087fea0aa2cd/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 15:35:49,761 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c6cedb4-492f-4233-84ad-087fea0aa2cd/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 15:35:49,762 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c6cedb4-492f-4233-84ad-087fea0aa2cd/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-22 15:35:49,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:35:49,813 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-22 15:35:49,815 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:35:50,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:35:50,013 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:35:50,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:35:50,172 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 15:35:50,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [480633112] [2021-11-22 15:35:50,173 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [480633112] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 15:35:50,173 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:35:50,173 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-22 15:35:50,174 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293161252] [2021-11-22 15:35:50,174 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 15:35:50,175 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 15:35:50,175 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 15:35:50,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 15:35:50,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:35:50,176 INFO L87 Difference]: Start difference. First operand 95 states and 134 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 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) [2021-11-22 15:35:50,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:35:50,765 INFO L93 Difference]: Finished difference Result 360 states and 493 transitions. [2021-11-22 15:35:50,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-22 15:35:50,767 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 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 [2021-11-22 15:35:50,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:35:50,775 INFO L225 Difference]: With dead ends: 360 [2021-11-22 15:35:50,776 INFO L226 Difference]: Without dead ends: 304 [2021-11-22 15:35:50,778 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-22 15:35:50,782 INFO L933 BasicCegarLoop]: 122 mSDtfsCounter, 509 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 509 SdHoareTripleChecker+Valid, 472 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-22 15:35:50,786 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [509 Valid, 472 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-22 15:35:50,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2021-11-22 15:35:50,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 123. [2021-11-22 15:35:50,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 117 states have (on average 1.4957264957264957) internal successors, (175), 122 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:35:50,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 175 transitions. [2021-11-22 15:35:50,827 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 175 transitions. Word has length 19 [2021-11-22 15:35:50,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:35:50,827 INFO L470 AbstractCegarLoop]: Abstraction has 123 states and 175 transitions. [2021-11-22 15:35:50,828 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 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) [2021-11-22 15:35:50,828 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 175 transitions. [2021-11-22 15:35:50,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-22 15:35:50,830 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:35:50,831 INFO L514 BasicCegarLoop]: 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] [2021-11-22 15:35:50,851 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c6cedb4-492f-4233-84ad-087fea0aa2cd/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-22 15:35:51,052 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c6cedb4-492f-4233-84ad-087fea0aa2cd/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 15:35:51,054 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-22 15:35:51,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:35:51,055 INFO L85 PathProgramCache]: Analyzing trace with hash 1769714213, now seen corresponding path program 1 times [2021-11-22 15:35:51,055 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 15:35:51,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1289511842] [2021-11-22 15:35:51,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:35:51,056 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 15:35:51,056 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c6cedb4-492f-4233-84ad-087fea0aa2cd/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 15:35:51,060 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c6cedb4-492f-4233-84ad-087fea0aa2cd/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 15:35:51,079 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c6cedb4-492f-4233-84ad-087fea0aa2cd/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-22 15:35:51,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:35:51,116 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-22 15:35:51,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:35:51,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:35:51,322 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:35:51,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:35:51,458 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 15:35:51,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1289511842] [2021-11-22 15:35:51,462 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1289511842] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 15:35:51,462 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:35:51,462 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-22 15:35:51,462 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358669514] [2021-11-22 15:35:51,462 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 15:35:51,463 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 15:35:51,463 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 15:35:51,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 15:35:51,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:35:51,464 INFO L87 Difference]: Start difference. First operand 123 states and 175 transitions. Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 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) [2021-11-22 15:35:51,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:35:51,923 INFO L93 Difference]: Finished difference Result 248 states and 339 transitions. [2021-11-22 15:35:51,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 15:35:51,924 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 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 [2021-11-22 15:35:51,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:35:51,925 INFO L225 Difference]: With dead ends: 248 [2021-11-22 15:35:51,925 INFO L226 Difference]: Without dead ends: 194 [2021-11-22 15:35:51,926 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-22 15:35:51,930 INFO L933 BasicCegarLoop]: 118 mSDtfsCounter, 232 mSDsluCounter, 357 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 475 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-22 15:35:51,930 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [232 Valid, 475 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-22 15:35:51,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2021-11-22 15:35:51,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 173. [2021-11-22 15:35:51,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 167 states have (on average 1.4850299401197604) internal successors, (248), 172 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:35:51,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 248 transitions. [2021-11-22 15:35:51,947 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 248 transitions. Word has length 23 [2021-11-22 15:35:51,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:35:51,947 INFO L470 AbstractCegarLoop]: Abstraction has 173 states and 248 transitions. [2021-11-22 15:35:51,948 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 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) [2021-11-22 15:35:51,948 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 248 transitions. [2021-11-22 15:35:51,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-22 15:35:51,949 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:35:51,950 INFO L514 BasicCegarLoop]: 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] [2021-11-22 15:35:51,970 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c6cedb4-492f-4233-84ad-087fea0aa2cd/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-22 15:35:52,170 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c6cedb4-492f-4233-84ad-087fea0aa2cd/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 15:35:52,170 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-22 15:35:52,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:35:52,171 INFO L85 PathProgramCache]: Analyzing trace with hash -750245721, now seen corresponding path program 1 times [2021-11-22 15:35:52,171 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 15:35:52,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2078451169] [2021-11-22 15:35:52,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:35:52,172 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 15:35:52,172 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c6cedb4-492f-4233-84ad-087fea0aa2cd/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 15:35:52,172 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c6cedb4-492f-4233-84ad-087fea0aa2cd/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 15:35:52,174 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c6cedb4-492f-4233-84ad-087fea0aa2cd/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-22 15:35:52,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:35:52,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-22 15:35:52,228 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:35:52,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:35:52,473 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:35:52,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:35:52,607 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 15:35:52,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2078451169] [2021-11-22 15:35:52,607 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2078451169] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 15:35:52,608 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:35:52,608 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2021-11-22 15:35:52,608 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252474081] [2021-11-22 15:35:52,608 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 15:35:52,609 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-22 15:35:52,609 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 15:35:52,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-22 15:35:52,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-22 15:35:52,610 INFO L87 Difference]: Start difference. First operand 173 states and 248 transitions. Second operand has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 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) [2021-11-22 15:35:53,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:35:53,154 INFO L93 Difference]: Finished difference Result 263 states and 357 transitions. [2021-11-22 15:35:53,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-22 15:35:53,155 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 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 [2021-11-22 15:35:53,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:35:53,157 INFO L225 Difference]: With dead ends: 263 [2021-11-22 15:35:53,157 INFO L226 Difference]: Without dead ends: 212 [2021-11-22 15:35:53,158 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-22 15:35:53,159 INFO L933 BasicCegarLoop]: 116 mSDtfsCounter, 259 mSDsluCounter, 477 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 593 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-22 15:35:53,160 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [259 Valid, 593 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-22 15:35:53,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2021-11-22 15:35:53,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 163. [2021-11-22 15:35:53,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 157 states have (on average 1.464968152866242) internal successors, (230), 162 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:35:53,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 230 transitions. [2021-11-22 15:35:53,173 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 230 transitions. Word has length 23 [2021-11-22 15:35:53,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:35:53,174 INFO L470 AbstractCegarLoop]: Abstraction has 163 states and 230 transitions. [2021-11-22 15:35:53,174 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 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) [2021-11-22 15:35:53,175 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 230 transitions. [2021-11-22 15:35:53,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-22 15:35:53,177 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:35:53,177 INFO L514 BasicCegarLoop]: 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] [2021-11-22 15:35:53,192 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c6cedb4-492f-4233-84ad-087fea0aa2cd/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-22 15:35:53,389 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c6cedb4-492f-4233-84ad-087fea0aa2cd/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 15:35:53,389 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-22 15:35:53,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:35:53,390 INFO L85 PathProgramCache]: Analyzing trace with hash 67439508, now seen corresponding path program 1 times [2021-11-22 15:35:53,391 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 15:35:53,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1006914552] [2021-11-22 15:35:53,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:35:53,391 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 15:35:53,391 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c6cedb4-492f-4233-84ad-087fea0aa2cd/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 15:35:53,393 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c6cedb4-492f-4233-84ad-087fea0aa2cd/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 15:35:53,412 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c6cedb4-492f-4233-84ad-087fea0aa2cd/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-22 15:35:53,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:35:53,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-22 15:35:53,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:35:53,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:35:53,871 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:35:54,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:35:54,064 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 15:35:54,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1006914552] [2021-11-22 15:35:54,064 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1006914552] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 15:35:54,064 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:35:54,064 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 7 [2021-11-22 15:35:54,064 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147970742] [2021-11-22 15:35:54,065 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 15:35:54,065 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-22 15:35:54,065 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 15:35:54,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-22 15:35:54,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-22 15:35:54,066 INFO L87 Difference]: Start difference. First operand 163 states and 230 transitions. Second operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:35:55,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:35:55,374 INFO L93 Difference]: Finished difference Result 458 states and 625 transitions. [2021-11-22 15:35:55,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-22 15:35:55,374 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 0 states have call successors, (0), 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 27 [2021-11-22 15:35:55,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:35:55,377 INFO L225 Difference]: With dead ends: 458 [2021-11-22 15:35:55,378 INFO L226 Difference]: Without dead ends: 367 [2021-11-22 15:35:55,379 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2021-11-22 15:35:55,380 INFO L933 BasicCegarLoop]: 117 mSDtfsCounter, 602 mSDsluCounter, 682 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 602 SdHoareTripleChecker+Valid, 799 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-22 15:35:55,381 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [602 Valid, 799 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-22 15:35:55,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2021-11-22 15:35:55,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 257. [2021-11-22 15:35:55,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 251 states have (on average 1.4223107569721116) internal successors, (357), 256 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:35:55,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 357 transitions. [2021-11-22 15:35:55,402 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 357 transitions. Word has length 27 [2021-11-22 15:35:55,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:35:55,403 INFO L470 AbstractCegarLoop]: Abstraction has 257 states and 357 transitions. [2021-11-22 15:35:55,403 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:35:55,403 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 357 transitions. [2021-11-22 15:35:55,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-22 15:35:55,406 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:35:55,406 INFO L514 BasicCegarLoop]: 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] [2021-11-22 15:35:55,423 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c6cedb4-492f-4233-84ad-087fea0aa2cd/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-22 15:35:55,619 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c6cedb4-492f-4233-84ad-087fea0aa2cd/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 15:35:55,620 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-22 15:35:55,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:35:55,620 INFO L85 PathProgramCache]: Analyzing trace with hash -2003856211, now seen corresponding path program 1 times [2021-11-22 15:35:55,620 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 15:35:55,621 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [868295380] [2021-11-22 15:35:55,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:35:55,621 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 15:35:55,621 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c6cedb4-492f-4233-84ad-087fea0aa2cd/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 15:35:55,622 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c6cedb4-492f-4233-84ad-087fea0aa2cd/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 15:35:55,623 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c6cedb4-492f-4233-84ad-087fea0aa2cd/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-22 15:35:55,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:35:55,672 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-22 15:35:55,673 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:35:55,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:35:55,873 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:35:56,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:35:56,103 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 15:35:56,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [868295380] [2021-11-22 15:35:56,103 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [868295380] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 15:35:56,104 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:35:56,104 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-22 15:35:56,104 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758927827] [2021-11-22 15:35:56,104 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 15:35:56,105 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-22 15:35:56,105 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 15:35:56,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-22 15:35:56,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-22 15:35:56,106 INFO L87 Difference]: Start difference. First operand 257 states and 357 transitions. Second operand has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:35:56,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:35:56,277 INFO L93 Difference]: Finished difference Result 469 states and 648 transitions. [2021-11-22 15:35:56,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-22 15:35:56,277 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-11-22 15:35:56,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:35:56,280 INFO L225 Difference]: With dead ends: 469 [2021-11-22 15:35:56,280 INFO L226 Difference]: Without dead ends: 386 [2021-11-22 15:35:56,281 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-22 15:35:56,282 INFO L933 BasicCegarLoop]: 131 mSDtfsCounter, 204 mSDsluCounter, 421 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 552 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:35:56,283 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [204 Valid, 552 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:35:56,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2021-11-22 15:35:56,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 315. [2021-11-22 15:35:56,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 309 states have (on average 1.3851132686084142) internal successors, (428), 314 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:35:56,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 428 transitions. [2021-11-22 15:35:56,300 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 428 transitions. Word has length 31 [2021-11-22 15:35:56,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:35:56,300 INFO L470 AbstractCegarLoop]: Abstraction has 315 states and 428 transitions. [2021-11-22 15:35:56,301 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:35:56,301 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 428 transitions. [2021-11-22 15:35:56,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-22 15:35:56,303 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:35:56,303 INFO L514 BasicCegarLoop]: 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] [2021-11-22 15:35:56,322 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c6cedb4-492f-4233-84ad-087fea0aa2cd/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-22 15:35:56,515 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c6cedb4-492f-4233-84ad-087fea0aa2cd/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 15:35:56,516 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-22 15:35:56,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:35:56,518 INFO L85 PathProgramCache]: Analyzing trace with hash -1255057275, now seen corresponding path program 1 times [2021-11-22 15:35:56,518 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 15:35:56,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1206158746] [2021-11-22 15:35:56,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:35:56,519 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 15:35:56,519 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c6cedb4-492f-4233-84ad-087fea0aa2cd/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 15:35:56,520 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c6cedb4-492f-4233-84ad-087fea0aa2cd/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 15:35:56,553 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c6cedb4-492f-4233-84ad-087fea0aa2cd/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-22 15:35:56,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:35:56,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-22 15:35:56,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:35:57,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:35:57,242 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:35:57,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:35:57,828 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 15:35:57,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1206158746] [2021-11-22 15:35:57,829 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1206158746] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 15:35:57,829 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:35:57,829 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 14 [2021-11-22 15:35:57,829 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287924306] [2021-11-22 15:35:57,829 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 15:35:57,830 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-22 15:35:57,830 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 15:35:57,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-22 15:35:57,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2021-11-22 15:35:57,830 INFO L87 Difference]: Start difference. First operand 315 states and 428 transitions. Second operand has 14 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:36:00,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:36:00,490 INFO L93 Difference]: Finished difference Result 982 states and 1277 transitions. [2021-11-22 15:36:00,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-22 15:36:00,491 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 states have internal predecessors, (50), 0 states have call successors, (0), 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 31 [2021-11-22 15:36:00,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:36:00,498 INFO L225 Difference]: With dead ends: 982 [2021-11-22 15:36:00,498 INFO L226 Difference]: Without dead ends: 899 [2021-11-22 15:36:00,500 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=160, Invalid=490, Unknown=0, NotChecked=0, Total=650 [2021-11-22 15:36:00,501 INFO L933 BasicCegarLoop]: 220 mSDtfsCounter, 1800 mSDsluCounter, 1395 mSDsCounter, 0 mSdLazyCounter, 365 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1800 SdHoareTripleChecker+Valid, 1615 SdHoareTripleChecker+Invalid, 399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 365 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-11-22 15:36:00,501 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1800 Valid, 1615 Invalid, 399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 365 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-11-22 15:36:00,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 899 states. [2021-11-22 15:36:00,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 899 to 398. [2021-11-22 15:36:00,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 398 states, 392 states have (on average 1.385204081632653) internal successors, (543), 397 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:36:00,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 543 transitions. [2021-11-22 15:36:00,533 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 543 transitions. Word has length 31 [2021-11-22 15:36:00,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:36:00,534 INFO L470 AbstractCegarLoop]: Abstraction has 398 states and 543 transitions. [2021-11-22 15:36:00,534 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:36:00,534 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 543 transitions. [2021-11-22 15:36:00,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-22 15:36:00,536 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:36:00,536 INFO L514 BasicCegarLoop]: 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] [2021-11-22 15:36:00,548 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c6cedb4-492f-4233-84ad-087fea0aa2cd/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2021-11-22 15:36:00,747 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c6cedb4-492f-4233-84ad-087fea0aa2cd/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 15:36:00,749 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-22 15:36:00,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:36:00,750 INFO L85 PathProgramCache]: Analyzing trace with hash -862030265, now seen corresponding path program 1 times [2021-11-22 15:36:00,750 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 15:36:00,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [161283757] [2021-11-22 15:36:00,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:36:00,750 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 15:36:00,750 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c6cedb4-492f-4233-84ad-087fea0aa2cd/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 15:36:00,751 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c6cedb4-492f-4233-84ad-087fea0aa2cd/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 15:36:00,752 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c6cedb4-492f-4233-84ad-087fea0aa2cd/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-22 15:36:00,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:36:00,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-22 15:36:00,798 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:36:01,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:36:01,445 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:36:01,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:36:01,947 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 15:36:01,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [161283757] [2021-11-22 15:36:01,947 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [161283757] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 15:36:01,947 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:36:01,947 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 13 [2021-11-22 15:36:01,947 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229314344] [2021-11-22 15:36:01,948 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 15:36:01,948 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-22 15:36:01,948 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 15:36:01,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-22 15:36:01,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2021-11-22 15:36:01,949 INFO L87 Difference]: Start difference. First operand 398 states and 543 transitions. Second operand has 13 states, 13 states have (on average 3.230769230769231) internal successors, (42), 13 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:36:04,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:36:04,509 INFO L93 Difference]: Finished difference Result 960 states and 1314 transitions. [2021-11-22 15:36:04,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-22 15:36:04,510 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.230769230769231) internal successors, (42), 13 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-11-22 15:36:04,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:36:04,516 INFO L225 Difference]: With dead ends: 960 [2021-11-22 15:36:04,516 INFO L226 Difference]: Without dead ends: 814 [2021-11-22 15:36:04,517 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2021-11-22 15:36:04,518 INFO L933 BasicCegarLoop]: 233 mSDtfsCounter, 995 mSDsluCounter, 1083 mSDsCounter, 0 mSdLazyCounter, 407 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 995 SdHoareTripleChecker+Valid, 1316 SdHoareTripleChecker+Invalid, 433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-11-22 15:36:04,519 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [995 Valid, 1316 Invalid, 433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 407 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-11-22 15:36:04,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 814 states. [2021-11-22 15:36:04,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 814 to 523. [2021-11-22 15:36:04,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 523 states, 517 states have (on average 1.377176015473888) internal successors, (712), 522 states have internal predecessors, (712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:36:04,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 523 states to 523 states and 712 transitions. [2021-11-22 15:36:04,558 INFO L78 Accepts]: Start accepts. Automaton has 523 states and 712 transitions. Word has length 31 [2021-11-22 15:36:04,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:36:04,558 INFO L470 AbstractCegarLoop]: Abstraction has 523 states and 712 transitions. [2021-11-22 15:36:04,559 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.230769230769231) internal successors, (42), 13 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:36:04,559 INFO L276 IsEmpty]: Start isEmpty. Operand 523 states and 712 transitions. [2021-11-22 15:36:04,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-22 15:36:04,560 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:36:04,560 INFO L514 BasicCegarLoop]: 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] [2021-11-22 15:36:04,576 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c6cedb4-492f-4233-84ad-087fea0aa2cd/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-22 15:36:04,764 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c6cedb4-492f-4233-84ad-087fea0aa2cd/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 15:36:04,765 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-22 15:36:04,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:36:04,765 INFO L85 PathProgramCache]: Analyzing trace with hash -861970683, now seen corresponding path program 1 times [2021-11-22 15:36:04,765 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 15:36:04,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [327633450] [2021-11-22 15:36:04,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:36:04,766 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 15:36:04,766 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c6cedb4-492f-4233-84ad-087fea0aa2cd/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 15:36:04,767 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c6cedb4-492f-4233-84ad-087fea0aa2cd/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 15:36:04,786 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c6cedb4-492f-4233-84ad-087fea0aa2cd/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-22 15:36:04,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:36:04,837 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-22 15:36:04,838 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:36:05,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:36:05,613 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:36:06,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:36:06,440 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 15:36:06,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [327633450] [2021-11-22 15:36:06,440 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [327633450] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 15:36:06,441 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:36:06,441 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 18 [2021-11-22 15:36:06,441 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711504657] [2021-11-22 15:36:06,441 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 15:36:06,441 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-22 15:36:06,441 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 15:36:06,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-22 15:36:06,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2021-11-22 15:36:06,442 INFO L87 Difference]: Start difference. First operand 523 states and 712 transitions. Second operand has 18 states, 18 states have (on average 2.8333333333333335) internal successors, (51), 18 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:36:11,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:36:11,601 INFO L93 Difference]: Finished difference Result 804 states and 1079 transitions. [2021-11-22 15:36:11,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-22 15:36:11,602 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.8333333333333335) internal successors, (51), 18 states have internal predecessors, (51), 0 states have call successors, (0), 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 31 [2021-11-22 15:36:11,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:36:11,607 INFO L225 Difference]: With dead ends: 804 [2021-11-22 15:36:11,607 INFO L226 Difference]: Without dead ends: 802 [2021-11-22 15:36:11,609 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 219 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=318, Invalid=942, Unknown=0, NotChecked=0, Total=1260 [2021-11-22 15:36:11,610 INFO L933 BasicCegarLoop]: 234 mSDtfsCounter, 1123 mSDsluCounter, 1929 mSDsCounter, 0 mSdLazyCounter, 770 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1123 SdHoareTripleChecker+Valid, 2163 SdHoareTripleChecker+Invalid, 808 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 770 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2021-11-22 15:36:11,610 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1123 Valid, 2163 Invalid, 808 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 770 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2021-11-22 15:36:11,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 802 states. [2021-11-22 15:36:11,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 802 to 521. [2021-11-22 15:36:11,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 521 states, 516 states have (on average 1.3643410852713178) internal successors, (704), 520 states have internal predecessors, (704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:36:11,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 521 states to 521 states and 704 transitions. [2021-11-22 15:36:11,660 INFO L78 Accepts]: Start accepts. Automaton has 521 states and 704 transitions. Word has length 31 [2021-11-22 15:36:11,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:36:11,660 INFO L470 AbstractCegarLoop]: Abstraction has 521 states and 704 transitions. [2021-11-22 15:36:11,661 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.8333333333333335) internal successors, (51), 18 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:36:11,661 INFO L276 IsEmpty]: Start isEmpty. Operand 521 states and 704 transitions. [2021-11-22 15:36:11,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-22 15:36:11,662 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:36:11,662 INFO L514 BasicCegarLoop]: 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] [2021-11-22 15:36:11,677 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c6cedb4-492f-4233-84ad-087fea0aa2cd/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-22 15:36:11,874 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c6cedb4-492f-4233-84ad-087fea0aa2cd/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 15:36:11,875 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-22 15:36:11,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:36:11,875 INFO L85 PathProgramCache]: Analyzing trace with hash -220379629, now seen corresponding path program 1 times [2021-11-22 15:36:11,875 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 15:36:11,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1533389853] [2021-11-22 15:36:11,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:36:11,875 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 15:36:11,876 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c6cedb4-492f-4233-84ad-087fea0aa2cd/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 15:36:11,876 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c6cedb4-492f-4233-84ad-087fea0aa2cd/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 15:36:11,877 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c6cedb4-492f-4233-84ad-087fea0aa2cd/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-22 15:36:11,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:36:11,917 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-22 15:36:11,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:36:12,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:36:12,498 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:36:12,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:36:12,860 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 15:36:12,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1533389853] [2021-11-22 15:36:12,860 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1533389853] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 15:36:12,860 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:36:12,861 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 6] imperfect sequences [] total 13 [2021-11-22 15:36:12,861 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309718612] [2021-11-22 15:36:12,861 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 15:36:12,862 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-22 15:36:12,862 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 15:36:12,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-22 15:36:12,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2021-11-22 15:36:12,863 INFO L87 Difference]: Start difference. First operand 521 states and 704 transitions. Second operand has 13 states, 13 states have (on average 4.076923076923077) internal successors, (53), 13 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:36:16,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:36:16,303 INFO L93 Difference]: Finished difference Result 867 states and 1158 transitions. [2021-11-22 15:36:16,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-22 15:36:16,305 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.076923076923077) internal successors, (53), 13 states have internal predecessors, (53), 0 states have call successors, (0), 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 32 [2021-11-22 15:36:16,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:36:16,310 INFO L225 Difference]: With dead ends: 867 [2021-11-22 15:36:16,311 INFO L226 Difference]: Without dead ends: 822 [2021-11-22 15:36:16,312 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=230, Invalid=700, Unknown=0, NotChecked=0, Total=930 [2021-11-22 15:36:16,313 INFO L933 BasicCegarLoop]: 102 mSDtfsCounter, 932 mSDsluCounter, 1096 mSDsCounter, 0 mSdLazyCounter, 453 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 932 SdHoareTripleChecker+Valid, 1198 SdHoareTripleChecker+Invalid, 475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 453 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:36:16,313 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [932 Valid, 1198 Invalid, 475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 453 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-11-22 15:36:16,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 822 states. [2021-11-22 15:36:16,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 822 to 518. [2021-11-22 15:36:16,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 518 states, 513 states have (on average 1.364522417153996) internal successors, (700), 517 states have internal predecessors, (700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:36:16,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 518 states to 518 states and 700 transitions. [2021-11-22 15:36:16,362 INFO L78 Accepts]: Start accepts. Automaton has 518 states and 700 transitions. Word has length 32 [2021-11-22 15:36:16,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:36:16,362 INFO L470 AbstractCegarLoop]: Abstraction has 518 states and 700 transitions. [2021-11-22 15:36:16,362 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.076923076923077) internal successors, (53), 13 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:36:16,363 INFO L276 IsEmpty]: Start isEmpty. Operand 518 states and 700 transitions. [2021-11-22 15:36:16,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-22 15:36:16,364 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:36:16,365 INFO L514 BasicCegarLoop]: 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] [2021-11-22 15:36:16,381 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c6cedb4-492f-4233-84ad-087fea0aa2cd/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-22 15:36:16,577 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c6cedb4-492f-4233-84ad-087fea0aa2cd/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 15:36:16,578 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-22 15:36:16,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:36:16,578 INFO L85 PathProgramCache]: Analyzing trace with hash -163121327, now seen corresponding path program 1 times [2021-11-22 15:36:16,578 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 15:36:16,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1478313285] [2021-11-22 15:36:16,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:36:16,579 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 15:36:16,579 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c6cedb4-492f-4233-84ad-087fea0aa2cd/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 15:36:16,579 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c6cedb4-492f-4233-84ad-087fea0aa2cd/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 15:36:16,580 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c6cedb4-492f-4233-84ad-087fea0aa2cd/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-22 15:36:16,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:36:16,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-22 15:36:16,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:36:16,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:36:16,709 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:36:16,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:36:16,824 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 15:36:16,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1478313285] [2021-11-22 15:36:16,824 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1478313285] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 15:36:16,824 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:36:16,824 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-22 15:36:16,824 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610879016] [2021-11-22 15:36:16,824 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 15:36:16,825 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-22 15:36:16,825 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 15:36:16,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-22 15:36:16,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-22 15:36:16,825 INFO L87 Difference]: Start difference. First operand 518 states and 700 transitions. Second operand has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:36:17,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:36:17,053 INFO L93 Difference]: Finished difference Result 580 states and 782 transitions. [2021-11-22 15:36:17,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-22 15:36:17,054 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 0 states have call successors, (0), 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 32 [2021-11-22 15:36:17,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:36:17,058 INFO L225 Difference]: With dead ends: 580 [2021-11-22 15:36:17,058 INFO L226 Difference]: Without dead ends: 575 [2021-11-22 15:36:17,059 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-11-22 15:36:17,060 INFO L933 BasicCegarLoop]: 160 mSDtfsCounter, 45 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 457 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:36:17,060 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [45 Valid, 457 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:36:17,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2021-11-22 15:36:17,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 518. [2021-11-22 15:36:17,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 518 states, 513 states have (on average 1.354775828460039) internal successors, (695), 517 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:36:17,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 518 states to 518 states and 695 transitions. [2021-11-22 15:36:17,102 INFO L78 Accepts]: Start accepts. Automaton has 518 states and 695 transitions. Word has length 32 [2021-11-22 15:36:17,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:36:17,103 INFO L470 AbstractCegarLoop]: Abstraction has 518 states and 695 transitions. [2021-11-22 15:36:17,103 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:36:17,103 INFO L276 IsEmpty]: Start isEmpty. Operand 518 states and 695 transitions. [2021-11-22 15:36:17,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-22 15:36:17,105 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:36:17,105 INFO L514 BasicCegarLoop]: 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, 1] [2021-11-22 15:36:17,118 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c6cedb4-492f-4233-84ad-087fea0aa2cd/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-22 15:36:17,317 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c6cedb4-492f-4233-84ad-087fea0aa2cd/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 15:36:17,318 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-22 15:36:17,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:36:17,318 INFO L85 PathProgramCache]: Analyzing trace with hash -266135130, now seen corresponding path program 1 times [2021-11-22 15:36:17,318 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 15:36:17,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [304998581] [2021-11-22 15:36:17,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:36:17,319 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 15:36:17,319 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c6cedb4-492f-4233-84ad-087fea0aa2cd/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 15:36:17,320 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c6cedb4-492f-4233-84ad-087fea0aa2cd/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 15:36:17,365 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c6cedb4-492f-4233-84ad-087fea0aa2cd/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-22 15:36:17,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:36:17,375 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-22 15:36:17,376 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:36:17,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:36:17,521 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:36:17,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:36:17,688 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 15:36:17,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [304998581] [2021-11-22 15:36:17,688 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [304998581] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 15:36:17,688 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:36:17,689 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-22 15:36:17,689 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578957457] [2021-11-22 15:36:17,689 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 15:36:17,689 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-22 15:36:17,689 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 15:36:17,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-22 15:36:17,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-22 15:36:17,690 INFO L87 Difference]: Start difference. First operand 518 states and 695 transitions. Second operand has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:36:17,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:36:17,858 INFO L93 Difference]: Finished difference Result 1042 states and 1384 transitions. [2021-11-22 15:36:17,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-22 15:36:17,858 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-22 15:36:17,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:36:17,864 INFO L225 Difference]: With dead ends: 1042 [2021-11-22 15:36:17,864 INFO L226 Difference]: Without dead ends: 957 [2021-11-22 15:36:17,865 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-22 15:36:17,870 INFO L933 BasicCegarLoop]: 149 mSDtfsCounter, 183 mSDsluCounter, 429 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 578 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:36:17,871 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [183 Valid, 578 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:36:17,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 957 states. [2021-11-22 15:36:17,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 957 to 566. [2021-11-22 15:36:17,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 566 states, 561 states have (on average 1.358288770053476) internal successors, (762), 565 states have internal predecessors, (762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:36:17,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 762 transitions. [2021-11-22 15:36:17,914 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 762 transitions. Word has length 33 [2021-11-22 15:36:17,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:36:17,915 INFO L470 AbstractCegarLoop]: Abstraction has 566 states and 762 transitions. [2021-11-22 15:36:17,916 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:36:17,916 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 762 transitions. [2021-11-22 15:36:17,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-22 15:36:17,917 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:36:17,917 INFO L514 BasicCegarLoop]: 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, 1] [2021-11-22 15:36:17,936 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c6cedb4-492f-4233-84ad-087fea0aa2cd/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-22 15:36:18,130 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c6cedb4-492f-4233-84ad-087fea0aa2cd/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 15:36:18,130 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-22 15:36:18,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:36:18,131 INFO L85 PathProgramCache]: Analyzing trace with hash 575025000, now seen corresponding path program 1 times [2021-11-22 15:36:18,131 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 15:36:18,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [449358081] [2021-11-22 15:36:18,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:36:18,131 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 15:36:18,132 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c6cedb4-492f-4233-84ad-087fea0aa2cd/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 15:36:18,132 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c6cedb4-492f-4233-84ad-087fea0aa2cd/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 15:36:18,134 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c6cedb4-492f-4233-84ad-087fea0aa2cd/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-22 15:36:18,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:36:18,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-22 15:36:18,185 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:36:18,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:36:18,971 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:36:19,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:36:19,970 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 15:36:19,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [449358081] [2021-11-22 15:36:19,970 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [449358081] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 15:36:19,970 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:36:19,970 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 11] imperfect sequences [] total 20 [2021-11-22 15:36:19,970 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871989064] [2021-11-22 15:36:19,970 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 15:36:19,971 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-22 15:36:19,971 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 15:36:19,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-22 15:36:19,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=324, Unknown=0, NotChecked=0, Total=380 [2021-11-22 15:36:19,972 INFO L87 Difference]: Start difference. First operand 566 states and 762 transitions. Second operand has 20 states, 20 states have (on average 2.75) internal successors, (55), 20 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:36:24,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:36:24,135 INFO L93 Difference]: Finished difference Result 1109 states and 1449 transitions. [2021-11-22 15:36:24,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-22 15:36:24,136 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.75) internal successors, (55), 20 states have internal predecessors, (55), 0 states have call successors, (0), 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 33 [2021-11-22 15:36:24,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:36:24,141 INFO L225 Difference]: With dead ends: 1109 [2021-11-22 15:36:24,142 INFO L226 Difference]: Without dead ends: 1054 [2021-11-22 15:36:24,143 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=199, Invalid=613, Unknown=0, NotChecked=0, Total=812 [2021-11-22 15:36:24,143 INFO L933 BasicCegarLoop]: 247 mSDtfsCounter, 1089 mSDsluCounter, 3276 mSDsCounter, 0 mSdLazyCounter, 841 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1089 SdHoareTripleChecker+Valid, 3523 SdHoareTripleChecker+Invalid, 873 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 841 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2021-11-22 15:36:24,144 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1089 Valid, 3523 Invalid, 873 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 841 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2021-11-22 15:36:24,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1054 states. [2021-11-22 15:36:24,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1054 to 566. [2021-11-22 15:36:24,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 566 states, 561 states have (on average 1.3475935828877006) internal successors, (756), 565 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:36:24,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 756 transitions. [2021-11-22 15:36:24,195 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 756 transitions. Word has length 33 [2021-11-22 15:36:24,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:36:24,196 INFO L470 AbstractCegarLoop]: Abstraction has 566 states and 756 transitions. [2021-11-22 15:36:24,196 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.75) internal successors, (55), 20 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:36:24,196 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 756 transitions. [2021-11-22 15:36:24,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-22 15:36:24,198 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:36:24,198 INFO L514 BasicCegarLoop]: 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, 1] [2021-11-22 15:36:24,228 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c6cedb4-492f-4233-84ad-087fea0aa2cd/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-22 15:36:24,410 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c6cedb4-492f-4233-84ad-087fea0aa2cd/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 15:36:24,410 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-22 15:36:24,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:36:24,411 INFO L85 PathProgramCache]: Analyzing trace with hash 218439332, now seen corresponding path program 1 times [2021-11-22 15:36:24,411 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 15:36:24,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [507792150] [2021-11-22 15:36:24,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:36:24,412 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 15:36:24,412 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c6cedb4-492f-4233-84ad-087fea0aa2cd/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 15:36:24,413 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c6cedb4-492f-4233-84ad-087fea0aa2cd/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 15:36:24,465 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c6cedb4-492f-4233-84ad-087fea0aa2cd/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-22 15:36:24,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-22 15:36:24,489 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-22 15:36:24,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-22 15:36:24,554 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-11-22 15:36:24,554 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-22 15:36:24,555 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (6 of 7 remaining) [2021-11-22 15:36:24,557 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2021-11-22 15:36:24,558 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (4 of 7 remaining) [2021-11-22 15:36:24,558 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (3 of 7 remaining) [2021-11-22 15:36:24,558 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (2 of 7 remaining) [2021-11-22 15:36:24,558 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (1 of 7 remaining) [2021-11-22 15:36:24,559 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2021-11-22 15:36:24,575 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c6cedb4-492f-4233-84ad-087fea0aa2cd/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-22 15:36:24,767 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c6cedb4-492f-4233-84ad-087fea0aa2cd/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 15:36:24,770 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:36:24,773 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-22 15:36:24,814 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 03:36:24 BoogieIcfgContainer [2021-11-22 15:36:24,814 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-22 15:36:24,815 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-22 15:36:24,815 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-22 15:36:24,815 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-22 15:36:24,816 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 03:32:11" (3/4) ... [2021-11-22 15:36:24,817 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-22 15:36:24,878 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c6cedb4-492f-4233-84ad-087fea0aa2cd/bin/uautomizer-w2VwFs6gM0/witness.graphml [2021-11-22 15:36:24,878 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-22 15:36:24,879 INFO L158 Benchmark]: Toolchain (without parser) took 256756.75ms. Allocated memory was 54.5MB in the beginning and 69.2MB in the end (delta: 14.7MB). Free memory was 30.0MB in the beginning and 23.4MB in the end (delta: 6.6MB). Peak memory consumption was 23.7MB. Max. memory is 16.1GB. [2021-11-22 15:36:24,879 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 54.5MB. Free memory was 34.4MB in the beginning and 34.4MB in the end (delta: 37.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-22 15:36:24,880 INFO L158 Benchmark]: CACSL2BoogieTranslator took 466.47ms. Allocated memory is still 54.5MB. Free memory was 29.8MB in the beginning and 28.2MB in the end (delta: 1.6MB). Peak memory consumption was 9.8MB. Max. memory is 16.1GB. [2021-11-22 15:36:24,880 INFO L158 Benchmark]: Boogie Procedure Inliner took 100.72ms. Allocated memory is still 54.5MB. Free memory was 28.0MB in the beginning and 25.7MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-22 15:36:24,881 INFO L158 Benchmark]: Boogie Preprocessor took 88.61ms. Allocated memory was 54.5MB in the beginning and 69.2MB in the end (delta: 14.7MB). Free memory was 25.7MB in the beginning and 51.3MB in the end (delta: -25.6MB). Peak memory consumption was 3.6MB. Max. memory is 16.1GB. [2021-11-22 15:36:24,881 INFO L158 Benchmark]: RCFGBuilder took 3061.64ms. Allocated memory is still 69.2MB. Free memory was 51.3MB in the beginning and 48.4MB in the end (delta: 2.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2021-11-22 15:36:24,882 INFO L158 Benchmark]: TraceAbstraction took 252954.11ms. Allocated memory is still 69.2MB. Free memory was 48.0MB in the beginning and 27.6MB in the end (delta: 20.4MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2021-11-22 15:36:24,882 INFO L158 Benchmark]: Witness Printer took 63.72ms. Allocated memory is still 69.2MB. Free memory was 27.6MB in the beginning and 23.4MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-22 15:36:24,884 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 54.5MB. Free memory was 34.4MB in the beginning and 34.4MB in the end (delta: 37.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 466.47ms. Allocated memory is still 54.5MB. Free memory was 29.8MB in the beginning and 28.2MB in the end (delta: 1.6MB). Peak memory consumption was 9.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 100.72ms. Allocated memory is still 54.5MB. Free memory was 28.0MB in the beginning and 25.7MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 88.61ms. Allocated memory was 54.5MB in the beginning and 69.2MB in the end (delta: 14.7MB). Free memory was 25.7MB in the beginning and 51.3MB in the end (delta: -25.6MB). Peak memory consumption was 3.6MB. Max. memory is 16.1GB. * RCFGBuilder took 3061.64ms. Allocated memory is still 69.2MB. Free memory was 51.3MB in the beginning and 48.4MB in the end (delta: 2.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 252954.11ms. Allocated memory is still 69.2MB. Free memory was 48.0MB in the beginning and 27.6MB in the end (delta: 20.4MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Witness Printer took 63.72ms. Allocated memory is still 69.2MB. Free memory was 27.6MB in the beginning and 23.4MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. 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 - CounterExampleResult [Line: 60]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L402] COND FALSE !(__VERIFIER_nondet_int()) [L405] CALL main2() [L269] unsigned int a ; [L270] unsigned int ma = __VERIFIER_nondet_uint(); [L271] signed char ea = __VERIFIER_nondet_char(); [L272] unsigned int b ; [L273] unsigned int mb = __VERIFIER_nondet_uint(); [L274] signed char eb = __VERIFIER_nondet_char(); [L275] unsigned int r_add ; [L276] unsigned int zero ; [L277] int sa ; [L278] int sb ; [L279] int tmp ; [L280] int tmp___0 ; [L281] int tmp___1 ; [L282] int tmp___2 ; [L283] int tmp___3 ; [L284] int tmp___4 ; [L285] int tmp___5 ; [L286] int tmp___6 ; [L287] int tmp___7 ; [L288] int tmp___8 ; [L289] int tmp___9 ; [L290] int __retres23 ; [L294] CALL, EXPR base2flt(0, 0) [L68] unsigned int res ; [L69] unsigned int __retres4 ; VAL [\old(e)=0, \old(m)=0, e=0, m=0] [L72] COND TRUE ! m [L73] __retres4 = 0U VAL [\old(e)=0, \old(m)=0, __retres4=0, e=0, m=0] [L123] return (__retres4); VAL [\old(e)=0, \old(m)=0, \result=0, __retres4=0, e=0, m=0] [L294] RET, EXPR base2flt(0, 0) [L294] zero = base2flt(0, 0) [L295] CALL, EXPR base2flt(ma, ea) [L68] unsigned int res ; [L69] unsigned int __retres4 ; VAL [\old(e)=127, \old(m)=2147483648, e=127, m=2147483648] [L72] COND FALSE !(! m) VAL [\old(e)=127, \old(m)=2147483648, e=127, m=2147483648] [L78] COND FALSE !(m < 1U << 24U) VAL [\old(e)=127, \old(m)=2147483648, e=127, m=2147483648] [L100] COND TRUE 1 VAL [\old(e)=127, \old(m)=2147483648, e=127, m=2147483648] [L102] COND TRUE m >= 1U << 25U VAL [\old(e)=127, \old(m)=2147483648, e=127, m=2147483648] [L107] COND TRUE e >= 127 [L108] __retres4 = 4294967295U VAL [\old(e)=127, \old(m)=2147483648, __retres4=4294967295, e=127, m=2147483648] [L123] return (__retres4); VAL [\old(e)=127, \old(m)=2147483648, \result=-1, __retres4=4294967295, e=127, m=2147483648] [L295] RET, EXPR base2flt(ma, ea) [L295] a = base2flt(ma, ea) [L296] CALL, EXPR base2flt(mb, eb) [L68] unsigned int res ; [L69] unsigned int __retres4 ; VAL [\old(e)=0, \old(m)=16777216, e=0, m=16777216] [L72] COND FALSE !(! m) VAL [\old(e)=0, \old(m)=16777216, e=0, m=16777216] [L78] COND FALSE !(m < 1U << 24U) VAL [\old(e)=0, \old(m)=16777216, e=0, m=16777216] [L100] COND TRUE 1 VAL [\old(e)=0, \old(m)=16777216, e=0, m=16777216] [L102] COND FALSE !(m >= 1U << 25U) VAL [\old(e)=0, \old(m)=16777216, e=0, m=16777216] [L119] m = m & ~ (1U << 24U) [L120] res = m | ((unsigned int )(e + 128) << 24U) [L121] __retres4 = res VAL [\old(e)=0, \old(m)=16777216, __retres4=2147483648, e=0, m=0, res=2147483648] [L123] return (__retres4); VAL [\old(e)=0, \old(m)=16777216, \result=-2147483648, __retres4=2147483648, e=0, m=0, res=2147483648] [L296] RET, EXPR base2flt(mb, eb) [L296] b = base2flt(mb, eb) [L298] COND FALSE !(a < zero) VAL [a=4294967295, b=2147483648, ea=127, eb=0, ma=2147483648, mb=16777216, zero=0] [L301] COND TRUE a > zero [L302] tmp = 1 VAL [a=4294967295, b=2147483648, ea=127, eb=0, ma=2147483648, mb=16777216, tmp=1, zero=0] [L306] sa = tmp VAL [a=4294967295, b=2147483648, ea=127, eb=0, ma=2147483648, mb=16777216, sa=1, tmp=1, zero=0] [L308] COND FALSE !(b < zero) VAL [a=4294967295, b=2147483648, ea=127, eb=0, ma=2147483648, mb=16777216, sa=1, tmp=1, zero=0] [L311] COND TRUE b > zero [L312] tmp___0 = 1 VAL [a=4294967295, b=2147483648, ea=127, eb=0, ma=2147483648, mb=16777216, sa=1, tmp=1, tmp___0=1, zero=0] [L316] sb = tmp___0 VAL [a=4294967295, b=2147483648, ea=127, eb=0, ma=2147483648, mb=16777216, sa=1, sb=1, tmp=1, tmp___0=1, zero=0] [L319] CALL addflt(a, b) [L127] unsigned int res ; [L128] unsigned int ma ; [L129] unsigned int mb ; [L130] unsigned int delta ; [L131] int ea ; [L132] int eb ; [L133] unsigned int tmp ; [L134] unsigned int __retres10 ; VAL [\old(a)=4294967295, \old(b)=2147483648, a=4294967295, b=2147483648] [L137] COND FALSE !(a < b) VAL [\old(a)=4294967295, \old(b)=2147483648, a=4294967295, b=2147483648] [L144] COND FALSE !(! b) [L151] ma = a & ((1U << 24U) - 1U) [L152] ea = (int )(a >> 24U) - 128 [L153] ma = ma | (1U << 24U) [L154] mb = b & ((1U << 24U) - 1U) [L155] eb = (int )(b >> 24U) - 128 [L156] mb = mb | (1U << 24U) [L157] CALL __VERIFIER_assert(ea >= eb) [L59] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L157] RET __VERIFIER_assert(ea >= eb) [L158] delta = ea - eb [L159] CALL __VERIFIER_assert(delta < sizeof(mb) * 8) [L59] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L60] reach_error() VAL [\old(cond)=0, cond=0] - UnprovableResult [Line: 48]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 60]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 60]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 60]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 60]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 60]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 108 locations, 7 error locations. Started 1 CEGAR loops. OverallTime: 252.9s, OverallIterations: 15, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 36.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 7973 SdHoareTripleChecker+Valid, 14.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 7973 mSDsluCounter, 14546 SdHoareTripleChecker+Invalid, 13.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 533 IncrementalHoareTripleChecker+Unchecked, 12316 mSDsCounter, 222 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3217 IncrementalHoareTripleChecker+Invalid, 3972 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 222 mSolverCounterUnsat, 2230 mSDtfsCounter, 3217 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 794 GetRequests, 598 SyntacticMatches, 1 SemanticMatches, 195 ConstructedPredicates, 9 IntricatePredicates, 0 DeprecatedPredicates, 711 ImplicationChecksByTransitivity, 44.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=566occurred in iteration=13, InterpolantAutomatonStates: 161, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 14 MinimizatonAttempts, 2745 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 16.2s SatisfiabilityAnalysisTime, 196.0s InterpolantComputationTime, 393 NumberOfCodeBlocks, 393 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 692 ConstructedInterpolants, 4 QuantifiedInterpolants, 2744 SizeOfPredicates, 73 NumberOfNonLiveVariables, 856 ConjunctsInSsa, 98 ConjunctsInUnsatCore, 28 InterpolantComputations, 28 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 proved your program to be incorrect! [2021-11-22 15:36:25,098 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c6cedb4-492f-4233-84ad-087fea0aa2cd/bin/uautomizer-w2VwFs6gM0/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 Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE