./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-esbmc-regression/Double_div_bad.i.p+cfa-reducer.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_8325dc68-e0c4-4623-8332-8e673acfe361/bin/uautomizer-w2VwFs6gM0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8325dc68-e0c4-4623-8332-8e673acfe361/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_8325dc68-e0c4-4623-8332-8e673acfe361/bin/uautomizer-w2VwFs6gM0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8325dc68-e0c4-4623-8332-8e673acfe361/bin/uautomizer-w2VwFs6gM0/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-esbmc-regression/Double_div_bad.i.p+cfa-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8325dc68-e0c4-4623-8332-8e673acfe361/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_8325dc68-e0c4-4623-8332-8e673acfe361/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 8dd2b259de573dae381590d9c9a53c821e05ecea3ef79b47acb4a28edd56bf9a --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-22 15:08:03,369 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-22 15:08:03,373 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-22 15:08:03,419 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-22 15:08:03,420 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-22 15:08:03,422 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-22 15:08:03,424 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-22 15:08:03,427 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-22 15:08:03,430 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-22 15:08:03,432 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-22 15:08:03,433 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-22 15:08:03,435 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-22 15:08:03,436 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-22 15:08:03,443 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-22 15:08:03,445 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-22 15:08:03,448 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-22 15:08:03,452 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-22 15:08:03,454 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-22 15:08:03,456 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-22 15:08:03,462 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-22 15:08:03,468 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-22 15:08:03,470 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-22 15:08:03,474 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-22 15:08:03,475 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-22 15:08:03,482 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-22 15:08:03,482 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-22 15:08:03,483 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-22 15:08:03,491 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-22 15:08:03,492 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-22 15:08:03,494 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-22 15:08:03,495 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-22 15:08:03,496 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-22 15:08:03,498 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-22 15:08:03,500 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-22 15:08:03,502 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-22 15:08:03,502 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-22 15:08:03,503 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-22 15:08:03,503 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-22 15:08:03,504 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-22 15:08:03,505 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-22 15:08:03,506 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-22 15:08:03,507 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8325dc68-e0c4-4623-8332-8e673acfe361/bin/uautomizer-w2VwFs6gM0/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-22 15:08:03,548 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-22 15:08:03,550 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-22 15:08:03,551 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-22 15:08:03,551 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-22 15:08:03,560 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-22 15:08:03,560 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-22 15:08:03,561 INFO L138 SettingsManager]: * Use SBE=true [2021-11-22 15:08:03,566 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-22 15:08:03,566 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-22 15:08:03,566 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-22 15:08:03,568 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-22 15:08:03,568 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-22 15:08:03,568 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-22 15:08:03,569 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-22 15:08:03,569 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-22 15:08:03,569 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-22 15:08:03,569 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-22 15:08:03,570 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-22 15:08:03,570 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-22 15:08:03,570 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-22 15:08:03,570 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-22 15:08:03,571 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-22 15:08:03,571 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 15:08:03,571 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-22 15:08:03,572 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-22 15:08:03,572 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-22 15:08:03,572 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-22 15:08:03,572 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-22 15:08:03,573 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-22 15:08:03,574 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-22 15:08:03,575 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-22 15:08:03,575 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-22 15:08:03,575 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_8325dc68-e0c4-4623-8332-8e673acfe361/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8325dc68-e0c4-4623-8332-8e673acfe361/bin/uautomizer-w2VwFs6gM0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8dd2b259de573dae381590d9c9a53c821e05ecea3ef79b47acb4a28edd56bf9a [2021-11-22 15:08:03,905 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-22 15:08:03,946 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-22 15:08:03,949 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-22 15:08:03,951 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-22 15:08:03,952 INFO L275 PluginConnector]: CDTParser initialized [2021-11-22 15:08:03,953 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8325dc68-e0c4-4623-8332-8e673acfe361/bin/uautomizer-w2VwFs6gM0/../../sv-benchmarks/c/floats-esbmc-regression/Double_div_bad.i.p+cfa-reducer.c [2021-11-22 15:08:04,048 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8325dc68-e0c4-4623-8332-8e673acfe361/bin/uautomizer-w2VwFs6gM0/data/4b860ed20/83aa7be968034c068df6841ec7e37d91/FLAG1f01e7428 [2021-11-22 15:08:04,704 INFO L306 CDTParser]: Found 1 translation units. [2021-11-22 15:08:04,705 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8325dc68-e0c4-4623-8332-8e673acfe361/sv-benchmarks/c/floats-esbmc-regression/Double_div_bad.i.p+cfa-reducer.c [2021-11-22 15:08:04,718 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8325dc68-e0c4-4623-8332-8e673acfe361/bin/uautomizer-w2VwFs6gM0/data/4b860ed20/83aa7be968034c068df6841ec7e37d91/FLAG1f01e7428 [2021-11-22 15:08:05,046 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8325dc68-e0c4-4623-8332-8e673acfe361/bin/uautomizer-w2VwFs6gM0/data/4b860ed20/83aa7be968034c068df6841ec7e37d91 [2021-11-22 15:08:05,049 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-22 15:08:05,051 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-22 15:08:05,054 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-22 15:08:05,055 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-22 15:08:05,072 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-22 15:08:05,073 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 03:08:05" (1/1) ... [2021-11-22 15:08:05,074 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12e0be45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:08:05, skipping insertion in model container [2021-11-22 15:08:05,074 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 03:08:05" (1/1) ... [2021-11-22 15:08:05,083 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-22 15:08:05,099 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-22 15:08:05,339 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_8325dc68-e0c4-4623-8332-8e673acfe361/sv-benchmarks/c/floats-esbmc-regression/Double_div_bad.i.p+cfa-reducer.c[674,687] [2021-11-22 15:08:05,345 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 15:08:05,357 INFO L203 MainTranslator]: Completed pre-run [2021-11-22 15:08:05,375 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_8325dc68-e0c4-4623-8332-8e673acfe361/sv-benchmarks/c/floats-esbmc-regression/Double_div_bad.i.p+cfa-reducer.c[674,687] [2021-11-22 15:08:05,376 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 15:08:05,390 INFO L208 MainTranslator]: Completed translation [2021-11-22 15:08:05,391 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:08:05 WrapperNode [2021-11-22 15:08:05,391 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-22 15:08:05,392 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-22 15:08:05,393 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-22 15:08:05,393 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-22 15:08:05,401 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:08:05" (1/1) ... [2021-11-22 15:08:05,408 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:08:05" (1/1) ... [2021-11-22 15:08:05,425 INFO L137 Inliner]: procedures = 12, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 28 [2021-11-22 15:08:05,426 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-22 15:08:05,427 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-22 15:08:05,427 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-22 15:08:05,428 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-22 15:08:05,438 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:08:05" (1/1) ... [2021-11-22 15:08:05,438 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:08:05" (1/1) ... [2021-11-22 15:08:05,440 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:08:05" (1/1) ... [2021-11-22 15:08:05,440 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:08:05" (1/1) ... [2021-11-22 15:08:05,445 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:08:05" (1/1) ... [2021-11-22 15:08:05,447 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:08:05" (1/1) ... [2021-11-22 15:08:05,448 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:08:05" (1/1) ... [2021-11-22 15:08:05,450 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-22 15:08:05,451 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-22 15:08:05,452 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-22 15:08:05,452 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-22 15:08:05,453 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:08:05" (1/1) ... [2021-11-22 15:08:05,463 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 15:08:05,476 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8325dc68-e0c4-4623-8332-8e673acfe361/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:08:05,492 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8325dc68-e0c4-4623-8332-8e673acfe361/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-22 15:08:05,509 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8325dc68-e0c4-4623-8332-8e673acfe361/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-22 15:08:05,547 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-22 15:08:05,547 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-22 15:08:05,547 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-22 15:08:05,547 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-22 15:08:05,611 INFO L236 CfgBuilder]: Building ICFG [2021-11-22 15:08:05,613 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-22 15:08:05,692 INFO L277 CfgBuilder]: Performing block encoding [2021-11-22 15:08:05,697 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-22 15:08:05,697 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-22 15:08:05,699 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 03:08:05 BoogieIcfgContainer [2021-11-22 15:08:05,700 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-22 15:08:05,701 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-22 15:08:05,702 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-22 15:08:05,706 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-22 15:08:05,706 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 03:08:05" (1/3) ... [2021-11-22 15:08:05,707 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ba7bb46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 03:08:05, skipping insertion in model container [2021-11-22 15:08:05,707 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:08:05" (2/3) ... [2021-11-22 15:08:05,708 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ba7bb46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 03:08:05, skipping insertion in model container [2021-11-22 15:08:05,708 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 03:08:05" (3/3) ... [2021-11-22 15:08:05,709 INFO L111 eAbstractionObserver]: Analyzing ICFG Double_div_bad.i.p+cfa-reducer.c [2021-11-22 15:08:05,716 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-22 15:08:05,716 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-22 15:08:05,779 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-22 15:08:05,787 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 15:08:05,787 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-22 15:08:05,803 INFO L276 IsEmpty]: Start isEmpty. Operand has 9 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 8 states have internal predecessors, (10), 0 states have call successors, (0), 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 15:08:05,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-22 15:08:05,809 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:08:05,809 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-22 15:08:05,810 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:08:05,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:08:05,817 INFO L85 PathProgramCache]: Analyzing trace with hash 28696774, now seen corresponding path program 1 times [2021-11-22 15:08:05,827 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:08:05,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131186339] [2021-11-22 15:08:05,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:08:05,829 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:08:05,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-22 15:08:05,931 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-22 15:08:05,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-22 15:08:05,968 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-22 15:08:05,970 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-22 15:08:05,972 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-22 15:08:05,975 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-22 15:08:05,981 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2021-11-22 15:08:05,985 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-22 15:08:06,009 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 03:08:06 BoogieIcfgContainer [2021-11-22 15:08:06,010 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-22 15:08:06,011 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-22 15:08:06,011 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-22 15:08:06,011 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-22 15:08:06,012 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 03:08:05" (3/4) ... [2021-11-22 15:08:06,016 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-22 15:08:06,016 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-22 15:08:06,018 INFO L158 Benchmark]: Toolchain (without parser) took 965.77ms. Allocated memory is still 117.4MB. Free memory was 77.2MB in the beginning and 67.3MB in the end (delta: 9.8MB). Peak memory consumption was 7.9MB. Max. memory is 16.1GB. [2021-11-22 15:08:06,018 INFO L158 Benchmark]: CDTParser took 0.37ms. Allocated memory is still 117.4MB. Free memory is still 93.1MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-22 15:08:06,019 INFO L158 Benchmark]: CACSL2BoogieTranslator took 337.71ms. Allocated memory is still 117.4MB. Free memory was 77.0MB in the beginning and 91.4MB in the end (delta: -14.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-22 15:08:06,020 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.79ms. Allocated memory is still 117.4MB. Free memory was 91.4MB in the beginning and 89.9MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-22 15:08:06,021 INFO L158 Benchmark]: Boogie Preprocessor took 23.47ms. Allocated memory is still 117.4MB. Free memory was 89.9MB in the beginning and 89.0MB in the end (delta: 937.1kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-22 15:08:06,022 INFO L158 Benchmark]: RCFGBuilder took 248.36ms. Allocated memory is still 117.4MB. Free memory was 89.0MB in the beginning and 80.5MB in the end (delta: 8.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-22 15:08:06,023 INFO L158 Benchmark]: TraceAbstraction took 308.29ms. Allocated memory is still 117.4MB. Free memory was 79.9MB in the beginning and 67.8MB in the end (delta: 12.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-22 15:08:06,024 INFO L158 Benchmark]: Witness Printer took 5.41ms. Allocated memory is still 117.4MB. Free memory was 67.8MB in the beginning and 67.3MB in the end (delta: 460.5kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-22 15:08:06,028 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37ms. Allocated memory is still 117.4MB. Free memory is still 93.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 337.71ms. Allocated memory is still 117.4MB. Free memory was 77.0MB in the beginning and 91.4MB in the end (delta: -14.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 33.79ms. Allocated memory is still 117.4MB. Free memory was 91.4MB in the beginning and 89.9MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 23.47ms. Allocated memory is still 117.4MB. Free memory was 89.9MB in the beginning and 89.0MB in the end (delta: 937.1kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 248.36ms. Allocated memory is still 117.4MB. Free memory was 89.0MB in the beginning and 80.5MB in the end (delta: 8.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 308.29ms. Allocated memory is still 117.4MB. Free memory was 79.9MB in the beginning and 67.8MB in the end (delta: 12.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Witness Printer took 5.41ms. Allocated memory is still 117.4MB. Free memory was 67.8MB in the beginning and 67.3MB in the end (delta: 460.5kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 27]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 12, overapproximation of someBinaryArithmeticDOUBLEoperation at line 10. Possible FailurePath: [L1] int __return_main; VAL [__return_main=0] [L9] double main__x = 1.0; [L10] double main__x1 = main__x / 1.6; VAL [__return_main=0, main__x=1] [L12] COND FALSE !(main__x1 != main__x) [L21] int __tmp_1; [L22] __tmp_1 = main__x == 0 [L23] int __VERIFIER_assert__cond; [L24] __VERIFIER_assert__cond = __tmp_1 VAL [__return_main=0, __tmp_1=0, __VERIFIER_assert__cond=0, main__x=1] [L25] COND TRUE __VERIFIER_assert__cond == 0 VAL [__return_main=0, __tmp_1=0, __VERIFIER_assert__cond=0, main__x=1] [L27] reach_error() VAL [__return_main=0, __tmp_1=0, __VERIFIER_assert__cond=0, main__x=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 5 NumberOfCodeBlocks, 5 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-22 15:08:06,092 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8325dc68-e0c4-4623-8332-8e673acfe361/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_8325dc68-e0c4-4623-8332-8e673acfe361/bin/uautomizer-w2VwFs6gM0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8325dc68-e0c4-4623-8332-8e673acfe361/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_8325dc68-e0c4-4623-8332-8e673acfe361/bin/uautomizer-w2VwFs6gM0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8325dc68-e0c4-4623-8332-8e673acfe361/bin/uautomizer-w2VwFs6gM0/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-esbmc-regression/Double_div_bad.i.p+cfa-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8325dc68-e0c4-4623-8332-8e673acfe361/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_8325dc68-e0c4-4623-8332-8e673acfe361/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 8dd2b259de573dae381590d9c9a53c821e05ecea3ef79b47acb4a28edd56bf9a --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-22 15:08:08,935 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-22 15:08:08,938 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-22 15:08:09,001 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-22 15:08:09,002 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-22 15:08:09,007 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-22 15:08:09,009 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-22 15:08:09,016 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-22 15:08:09,020 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-22 15:08:09,026 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-22 15:08:09,028 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-22 15:08:09,031 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-22 15:08:09,031 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-22 15:08:09,035 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-22 15:08:09,042 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-22 15:08:09,048 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-22 15:08:09,050 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-22 15:08:09,051 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-22 15:08:09,054 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-22 15:08:09,067 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-22 15:08:09,069 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-22 15:08:09,071 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-22 15:08:09,074 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-22 15:08:09,078 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-22 15:08:09,089 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-22 15:08:09,090 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-22 15:08:09,090 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-22 15:08:09,093 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-22 15:08:09,093 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-22 15:08:09,095 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-22 15:08:09,095 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-22 15:08:09,096 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-22 15:08:09,099 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-22 15:08:09,100 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-22 15:08:09,101 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-22 15:08:09,102 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-22 15:08:09,103 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-22 15:08:09,103 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-22 15:08:09,103 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-22 15:08:09,106 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-22 15:08:09,106 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-22 15:08:09,107 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8325dc68-e0c4-4623-8332-8e673acfe361/bin/uautomizer-w2VwFs6gM0/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-11-22 15:08:09,158 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-22 15:08:09,158 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-22 15:08:09,159 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-22 15:08:09,159 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-22 15:08:09,161 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-22 15:08:09,161 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-22 15:08:09,162 INFO L138 SettingsManager]: * Use SBE=true [2021-11-22 15:08:09,163 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-22 15:08:09,163 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-22 15:08:09,163 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-22 15:08:09,164 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-22 15:08:09,165 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-22 15:08:09,165 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-22 15:08:09,165 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-22 15:08:09,165 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-22 15:08:09,166 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-22 15:08:09,166 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-22 15:08:09,166 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-22 15:08:09,166 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-22 15:08:09,167 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-22 15:08:09,167 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-22 15:08:09,167 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-22 15:08:09,167 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-22 15:08:09,167 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-22 15:08:09,168 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 15:08:09,168 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-22 15:08:09,168 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-22 15:08:09,169 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-22 15:08:09,169 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-22 15:08:09,169 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-22 15:08:09,169 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-22 15:08:09,170 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-22 15:08:09,170 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-22 15:08:09,170 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-22 15:08:09,170 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-22 15:08:09,171 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_8325dc68-e0c4-4623-8332-8e673acfe361/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8325dc68-e0c4-4623-8332-8e673acfe361/bin/uautomizer-w2VwFs6gM0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8dd2b259de573dae381590d9c9a53c821e05ecea3ef79b47acb4a28edd56bf9a [2021-11-22 15:08:09,597 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-22 15:08:09,640 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-22 15:08:09,643 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-22 15:08:09,644 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-22 15:08:09,658 INFO L275 PluginConnector]: CDTParser initialized [2021-11-22 15:08:09,660 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8325dc68-e0c4-4623-8332-8e673acfe361/bin/uautomizer-w2VwFs6gM0/../../sv-benchmarks/c/floats-esbmc-regression/Double_div_bad.i.p+cfa-reducer.c [2021-11-22 15:08:09,749 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8325dc68-e0c4-4623-8332-8e673acfe361/bin/uautomizer-w2VwFs6gM0/data/26d7820b6/bc80243e9da6447c862c1a545d073cf9/FLAG6ee89a10a [2021-11-22 15:08:10,288 INFO L306 CDTParser]: Found 1 translation units. [2021-11-22 15:08:10,289 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8325dc68-e0c4-4623-8332-8e673acfe361/sv-benchmarks/c/floats-esbmc-regression/Double_div_bad.i.p+cfa-reducer.c [2021-11-22 15:08:10,296 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8325dc68-e0c4-4623-8332-8e673acfe361/bin/uautomizer-w2VwFs6gM0/data/26d7820b6/bc80243e9da6447c862c1a545d073cf9/FLAG6ee89a10a [2021-11-22 15:08:10,668 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8325dc68-e0c4-4623-8332-8e673acfe361/bin/uautomizer-w2VwFs6gM0/data/26d7820b6/bc80243e9da6447c862c1a545d073cf9 [2021-11-22 15:08:10,673 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-22 15:08:10,677 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-22 15:08:10,682 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-22 15:08:10,682 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-22 15:08:10,687 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-22 15:08:10,688 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 03:08:10" (1/1) ... [2021-11-22 15:08:10,691 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44dfb767 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:08:10, skipping insertion in model container [2021-11-22 15:08:10,691 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 03:08:10" (1/1) ... [2021-11-22 15:08:10,702 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-22 15:08:10,723 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-22 15:08:10,947 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_8325dc68-e0c4-4623-8332-8e673acfe361/sv-benchmarks/c/floats-esbmc-regression/Double_div_bad.i.p+cfa-reducer.c[674,687] [2021-11-22 15:08:10,953 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 15:08:10,970 INFO L203 MainTranslator]: Completed pre-run [2021-11-22 15:08:10,989 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_8325dc68-e0c4-4623-8332-8e673acfe361/sv-benchmarks/c/floats-esbmc-regression/Double_div_bad.i.p+cfa-reducer.c[674,687] [2021-11-22 15:08:10,990 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 15:08:11,009 INFO L208 MainTranslator]: Completed translation [2021-11-22 15:08:11,009 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:08:11 WrapperNode [2021-11-22 15:08:11,010 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-22 15:08:11,011 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-22 15:08:11,011 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-22 15:08:11,012 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-22 15:08:11,021 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:08:11" (1/1) ... [2021-11-22 15:08:11,032 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:08:11" (1/1) ... [2021-11-22 15:08:11,079 INFO L137 Inliner]: procedures = 13, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 29 [2021-11-22 15:08:11,080 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-22 15:08:11,081 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-22 15:08:11,081 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-22 15:08:11,081 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-22 15:08:11,098 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:08:11" (1/1) ... [2021-11-22 15:08:11,098 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:08:11" (1/1) ... [2021-11-22 15:08:11,112 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:08:11" (1/1) ... [2021-11-22 15:08:11,122 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:08:11" (1/1) ... [2021-11-22 15:08:11,129 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:08:11" (1/1) ... [2021-11-22 15:08:11,133 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:08:11" (1/1) ... [2021-11-22 15:08:11,144 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:08:11" (1/1) ... [2021-11-22 15:08:11,147 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-22 15:08:11,148 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-22 15:08:11,148 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-22 15:08:11,148 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-22 15:08:11,149 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:08:11" (1/1) ... [2021-11-22 15:08:11,167 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 15:08:11,182 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8325dc68-e0c4-4623-8332-8e673acfe361/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:08:11,196 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8325dc68-e0c4-4623-8332-8e673acfe361/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-22 15:08:11,230 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8325dc68-e0c4-4623-8332-8e673acfe361/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-22 15:08:11,256 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-22 15:08:11,257 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-22 15:08:11,257 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-22 15:08:11,258 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-22 15:08:11,362 INFO L236 CfgBuilder]: Building ICFG [2021-11-22 15:08:11,367 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-22 15:08:15,450 INFO L277 CfgBuilder]: Performing block encoding [2021-11-22 15:08:15,458 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-22 15:08:15,458 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-22 15:08:15,460 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 03:08:15 BoogieIcfgContainer [2021-11-22 15:08:15,460 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-22 15:08:15,463 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-22 15:08:15,463 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-22 15:08:15,468 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-22 15:08:15,468 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 03:08:10" (1/3) ... [2021-11-22 15:08:15,469 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fedc8e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 03:08:15, skipping insertion in model container [2021-11-22 15:08:15,469 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:08:11" (2/3) ... [2021-11-22 15:08:15,470 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fedc8e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 03:08:15, skipping insertion in model container [2021-11-22 15:08:15,470 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 03:08:15" (3/3) ... [2021-11-22 15:08:15,472 INFO L111 eAbstractionObserver]: Analyzing ICFG Double_div_bad.i.p+cfa-reducer.c [2021-11-22 15:08:15,480 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-22 15:08:15,480 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-22 15:08:15,541 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-22 15:08:15,551 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 15:08:15,552 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-22 15:08:15,569 INFO L276 IsEmpty]: Start isEmpty. Operand has 9 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 8 states have internal predecessors, (10), 0 states have call successors, (0), 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 15:08:15,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-22 15:08:15,576 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:08:15,577 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-22 15:08:15,577 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:08:15,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:08:15,585 INFO L85 PathProgramCache]: Analyzing trace with hash 28696774, now seen corresponding path program 1 times [2021-11-22 15:08:15,599 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 15:08:15,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [99137625] [2021-11-22 15:08:15,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:08:15,602 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 15:08:15,602 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8325dc68-e0c4-4623-8332-8e673acfe361/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 15:08:15,626 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8325dc68-e0c4-4623-8332-8e673acfe361/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 15:08:15,690 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8325dc68-e0c4-4623-8332-8e673acfe361/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-22 15:08:16,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:08:17,005 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-22 15:08:17,009 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:08:23,002 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 15:08:23,002 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:08:27,795 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 15:08:27,795 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 15:08:27,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [99137625] [2021-11-22 15:08:27,797 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [99137625] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 15:08:27,797 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:08:27,798 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-22 15:08:27,800 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446675722] [2021-11-22 15:08:27,801 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 15:08:27,804 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 15:08:27,805 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 15:08:27,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 15:08:27,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:08:27,856 INFO L87 Difference]: Start difference. First operand has 9 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 8 states have internal predecessors, (10), 0 states have call successors, (0), 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 5 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 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 15:08:35,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:08:35,132 INFO L93 Difference]: Finished difference Result 17 states and 20 transitions. [2021-11-22 15:08:35,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 15:08:35,135 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-11-22 15:08:35,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:08:35,145 INFO L225 Difference]: With dead ends: 17 [2021-11-22 15:08:35,145 INFO L226 Difference]: Without dead ends: 8 [2021-11-22 15:08:35,149 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 8.8s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-22 15:08:35,154 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 8 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2021-11-22 15:08:35,156 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 12 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2021-11-22 15:08:35,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2021-11-22 15:08:35,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2021-11-22 15:08:35,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 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 15:08:35,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2021-11-22 15:08:35,191 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 5 [2021-11-22 15:08:35,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:08:35,191 INFO L470 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2021-11-22 15:08:35,192 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 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 15:08:35,192 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2021-11-22 15:08:35,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-22 15:08:35,193 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:08:35,193 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2021-11-22 15:08:35,225 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8325dc68-e0c4-4623-8332-8e673acfe361/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-22 15:08:35,418 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8325dc68-e0c4-4623-8332-8e673acfe361/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 15:08:35,419 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:08:35,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:08:35,420 INFO L85 PathProgramCache]: Analyzing trace with hash 1805796550, now seen corresponding path program 1 times [2021-11-22 15:08:35,421 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 15:08:35,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [743508419] [2021-11-22 15:08:35,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:08:35,422 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 15:08:35,422 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8325dc68-e0c4-4623-8332-8e673acfe361/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 15:08:35,424 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8325dc68-e0c4-4623-8332-8e673acfe361/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 15:08:35,428 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8325dc68-e0c4-4623-8332-8e673acfe361/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-22 15:08:38,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:08:38,332 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-22 15:08:38,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:08:50,327 WARN L227 SmtUtils]: Spent 5.39s on a formula simplification that was a NOOP. DAG size: 3 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-22 15:08:52,758 WARN L860 $PredicateComparison]: unable to prove that (and (= |c_ULTIMATE.start_main_~main__x1~0#1| (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse0) .cse0))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-11-22 15:08:59,093 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0)))) (and (= |c_ULTIMATE.start_main_~main__x1~0#1| (fp.div roundNearestTiesToEven |c_ULTIMATE.start_main_~main__x~0#1| .cse0)) (= |c_ULTIMATE.start_main_~main__x~0#1| (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 1.0) .cse0) .cse0)))) is different from true [2021-11-22 15:08:59,130 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2021-11-22 15:08:59,130 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:09:05,691 WARN L838 $PredicateComparison]: unable to prove that (not (fp.eq (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~main__x1~0#1| ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0))) |c_ULTIMATE.start_main_~main__x1~0#1|)) is different from false [2021-11-22 15:09:13,519 WARN L838 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (let ((.cse0 (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~main__x1~0#1| .cse1))) (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)))) is different from false [2021-11-22 15:09:15,834 WARN L860 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (let ((.cse0 (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~main__x1~0#1| .cse1))) (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)))) is different from true [2021-11-22 15:09:23,151 WARN L838 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse1) .cse1))) (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)))) is different from false [2021-11-22 15:09:25,599 WARN L860 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse1) .cse1))) (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)))) is different from true [2021-11-22 15:09:25,599 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2021-11-22 15:09:25,600 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 15:09:25,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [743508419] [2021-11-22 15:09:25,600 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [743508419] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 15:09:25,601 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-22 15:09:25,601 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-11-22 15:09:25,601 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351235733] [2021-11-22 15:09:25,601 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-22 15:09:25,603 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-22 15:09:25,603 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 15:09:25,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-22 15:09:25,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=15, Unknown=7, NotChecked=50, Total=90 [2021-11-22 15:09:25,605 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand has 10 states, 10 states have (on average 1.2) internal successors, (12), 9 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:09:28,087 WARN L860 $PredicateComparison]: unable to prove that (and (not (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse1) .cse1))) (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-11-22 15:09:30,652 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (and (= |c_ULTIMATE.start_main_~main__x1~0#1| (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse0)) (not (let ((.cse1 (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~main__x1~0#1| .cse0))) (fp.eq (fp.div c_currentRoundingMode .cse1 .cse0) .cse1))) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2021-11-22 15:09:33,970 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (and (not (fp.eq (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~main__x1~0#1| .cse0) |c_ULTIMATE.start_main_~main__x1~0#1|)) (= |c_ULTIMATE.start_main_~main__x1~0#1| (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse0) .cse0)) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2021-11-22 15:09:42,504 WARN L227 SmtUtils]: Spent 7.01s on a formula simplification. DAG size of input: 15 DAG size of output: 13 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-22 15:09:45,029 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.52s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-22 15:09:45,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:09:45,207 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2021-11-22 15:09:45,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-22 15:09:45,209 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.2) internal successors, (12), 9 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-11-22 15:09:45,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:09:45,209 INFO L225 Difference]: With dead ends: 12 [2021-11-22 15:09:45,209 INFO L226 Difference]: Without dead ends: 9 [2021-11-22 15:09:45,210 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 8 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 39.2s TimeCoverageRelationStatistics Valid=27, Invalid=25, Unknown=10, NotChecked=120, Total=182 [2021-11-22 15:09:45,213 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 20 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-11-22 15:09:45,213 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 11 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 1 Unknown, 20 Unchecked, 2.7s Time] [2021-11-22 15:09:45,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-11-22 15:09:45,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-11-22 15:09:45,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 0 states have call successors, (0), 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 15:09:45,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2021-11-22 15:09:45,221 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2021-11-22 15:09:45,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:09:45,222 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2021-11-22 15:09:45,223 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.2) internal successors, (12), 9 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:09:45,224 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2021-11-22 15:09:45,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-22 15:09:45,225 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:09:45,225 INFO L514 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1] [2021-11-22 15:09:45,278 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8325dc68-e0c4-4623-8332-8e673acfe361/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-22 15:09:45,435 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8325dc68-e0c4-4623-8332-8e673acfe361/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 15:09:45,437 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:09:45,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:09:45,439 INFO L85 PathProgramCache]: Analyzing trace with hash 145055718, now seen corresponding path program 2 times [2021-11-22 15:09:45,439 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 15:09:45,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [730391710] [2021-11-22 15:09:45,440 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-22 15:09:45,440 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 15:09:45,441 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8325dc68-e0c4-4623-8332-8e673acfe361/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 15:09:45,442 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8325dc68-e0c4-4623-8332-8e673acfe361/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 15:09:45,447 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8325dc68-e0c4-4623-8332-8e673acfe361/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-22 15:09:49,242 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-22 15:09:49,242 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-22 15:09:49,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-22 15:09:49,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:10:01,858 WARN L227 SmtUtils]: Spent 5.41s on a formula simplification that was a NOOP. DAG size: 3 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-22 15:10:04,380 WARN L860 $PredicateComparison]: unable to prove that (and (= |c_ULTIMATE.start_main_~main__x1~0#1| (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse0) .cse0))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-11-22 15:10:10,461 WARN L227 SmtUtils]: Spent 6.04s on a formula simplification that was a NOOP. DAG size: 3 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-22 15:10:12,748 WARN L860 $PredicateComparison]: unable to prove that (and (= (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse0) .cse0) .cse0)) |c_ULTIMATE.start_main_~main__x1~0#1|) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-11-22 15:10:23,090 WARN L227 SmtUtils]: Spent 6.55s on a formula simplification that was a NOOP. DAG size: 3 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-22 15:10:44,510 WARN L227 SmtUtils]: Spent 13.04s on a formula simplification that was a NOOP. DAG size: 16 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-22 15:10:44,615 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 1 times theorem prover too weak. 0 trivial. 5 not checked. [2021-11-22 15:10:44,615 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:10:54,434 WARN L838 $PredicateComparison]: unable to prove that (or (not (fp.eq (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~main__x1~0#1| ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0))) |c_ULTIMATE.start_main_~main__x1~0#1|)) (fp.eq |c_ULTIMATE.start_main_~main__x1~0#1| ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) is different from false [2021-11-22 15:10:56,603 WARN L860 $PredicateComparison]: unable to prove that (or (not (fp.eq (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~main__x1~0#1| ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0))) |c_ULTIMATE.start_main_~main__x1~0#1|)) (fp.eq |c_ULTIMATE.start_main_~main__x1~0#1| ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) is different from true [2021-11-22 15:11:01,983 WARN L227 SmtUtils]: Spent 5.37s on a formula simplification that was a NOOP. DAG size: 8 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-22 15:11:09,279 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (let ((.cse0 (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~main__x1~0#1| .cse1))) (or (fp.eq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0))))) is different from false [2021-11-22 15:11:11,587 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (let ((.cse0 (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~main__x1~0#1| .cse1))) (or (fp.eq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0))))) is different from true [2021-11-22 15:11:17,351 WARN L227 SmtUtils]: Spent 5.76s on a formula simplification that was a NOOP. DAG size: 9 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-22 15:11:23,484 WARN L227 SmtUtils]: Spent 6.13s on a formula simplification that was a NOOP. DAG size: 9 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-22 15:11:25,965 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~main__x1~0#1| .cse1) .cse1))) (or (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))))) is different from false [2021-11-22 15:11:28,454 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~main__x1~0#1| .cse1) .cse1))) (or (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))))) is different from true [2021-11-22 15:11:30,654 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 15:11:30,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [730391710] [2021-11-22 15:11:30,655 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: line 5127 column 7: push canceled [2021-11-22 15:11:30,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [246356451] [2021-11-22 15:11:30,656 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-22 15:11:30,656 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-22 15:11:30,656 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8325dc68-e0c4-4623-8332-8e673acfe361/bin/uautomizer-w2VwFs6gM0/cvc4 [2021-11-22 15:11:30,659 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8325dc68-e0c4-4623-8332-8e673acfe361/bin/uautomizer-w2VwFs6gM0/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-22 15:11:30,694 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8325dc68-e0c4-4623-8332-8e673acfe361/bin/uautomizer-w2VwFs6gM0/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2021-11-22 15:11:36,664 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-22 15:11:36,664 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-22 15:11:36,677 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-22 15:11:36,678 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:11:36,724 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Function currentRoundingMode is already defined. [2021-11-22 15:11:36,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1951552424] [2021-11-22 15:11:36,724 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-22 15:11:36,724 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:11:36,724 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8325dc68-e0c4-4623-8332-8e673acfe361/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:11:36,726 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8325dc68-e0c4-4623-8332-8e673acfe361/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 15:11:36,727 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8325dc68-e0c4-4623-8332-8e673acfe361/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-22 15:14:38,252 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-22 15:14:38,252 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-22 15:14:38,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-22 15:14:38,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:14:38,796 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Function currentRoundingMode is already defined. [2021-11-22 15:14:38,797 INFO L186 FreeRefinementEngine]: Found 0 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:14:38,797 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-11-22 15:14:38,797 ERROR L172 FreeRefinementEngine]: Strategy WOLF failed to provide any proof altough trace is infeasible [2021-11-22 15:14:38,797 INFO L628 BasicCegarLoop]: Counterexample might be feasible [2021-11-22 15:14:38,805 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-22 15:14:38,835 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8325dc68-e0c4-4623-8332-8e673acfe361/bin/uautomizer-w2VwFs6gM0/cvc4 --incremental --print-success --lang smt (5)] Ended with exit code 0 [2021-11-22 15:14:39,084 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8325dc68-e0c4-4623-8332-8e673acfe361/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-22 15:14:39,417 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8325dc68-e0c4-4623-8332-8e673acfe361/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-11-22 15:14:39,432 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8325dc68-e0c4-4623-8332-8e673acfe361/bin/uautomizer-w2VwFs6gM0/cvc4 --incremental --print-success --lang smt,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8325dc68-e0c4-4623-8332-8e673acfe361/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8325dc68-e0c4-4623-8332-8e673acfe361/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:14:39,436 INFO L732 BasicCegarLoop]: Path program histogram: [2, 1] [2021-11-22 15:14:39,439 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-22 15:14:39,456 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 03:14:39 BoogieIcfgContainer [2021-11-22 15:14:39,456 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-22 15:14:39,457 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-22 15:14:39,457 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-22 15:14:39,457 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-22 15:14:39,458 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 03:08:15" (3/4) ... [2021-11-22 15:14:39,462 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-22 15:14:39,462 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-22 15:14:39,463 INFO L158 Benchmark]: Toolchain (without parser) took 388786.02ms. Allocated memory was 60.8MB in the beginning and 79.7MB in the end (delta: 18.9MB). Free memory was 40.7MB in the beginning and 44.3MB in the end (delta: -3.6MB). Peak memory consumption was 15.5MB. Max. memory is 16.1GB. [2021-11-22 15:14:39,464 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 60.8MB. Free memory is still 41.9MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-22 15:14:39,464 INFO L158 Benchmark]: CACSL2BoogieTranslator took 328.12ms. Allocated memory is still 60.8MB. Free memory was 40.4MB in the beginning and 30.3MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-22 15:14:39,465 INFO L158 Benchmark]: Boogie Procedure Inliner took 68.80ms. Allocated memory is still 60.8MB. Free memory was 30.3MB in the beginning and 44.4MB in the end (delta: -14.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-22 15:14:39,466 INFO L158 Benchmark]: Boogie Preprocessor took 66.27ms. Allocated memory is still 60.8MB. Free memory was 44.4MB in the beginning and 43.2MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-22 15:14:39,466 INFO L158 Benchmark]: RCFGBuilder took 4312.55ms. Allocated memory is still 60.8MB. Free memory was 43.2MB in the beginning and 35.5MB in the end (delta: 7.8MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-11-22 15:14:39,467 INFO L158 Benchmark]: TraceAbstraction took 383993.13ms. Allocated memory was 60.8MB in the beginning and 79.7MB in the end (delta: 18.9MB). Free memory was 34.9MB in the beginning and 44.8MB in the end (delta: -9.9MB). Peak memory consumption was 12.4MB. Max. memory is 16.1GB. [2021-11-22 15:14:39,468 INFO L158 Benchmark]: Witness Printer took 5.34ms. Allocated memory is still 79.7MB. Free memory was 44.8MB in the beginning and 44.3MB in the end (delta: 518.2kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-22 15:14:39,472 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 60.8MB. Free memory is still 41.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 328.12ms. Allocated memory is still 60.8MB. Free memory was 40.4MB in the beginning and 30.3MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 68.80ms. Allocated memory is still 60.8MB. Free memory was 30.3MB in the beginning and 44.4MB in the end (delta: -14.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 66.27ms. Allocated memory is still 60.8MB. Free memory was 44.4MB in the beginning and 43.2MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 4312.55ms. Allocated memory is still 60.8MB. Free memory was 43.2MB in the beginning and 35.5MB in the end (delta: 7.8MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * TraceAbstraction took 383993.13ms. Allocated memory was 60.8MB in the beginning and 79.7MB in the end (delta: 18.9MB). Free memory was 34.9MB in the beginning and 44.8MB in the end (delta: -9.9MB). Peak memory consumption was 12.4MB. Max. memory is 16.1GB. * Witness Printer took 5.34ms. Allocated memory is still 79.7MB. Free memory was 44.8MB in the beginning and 44.3MB in the end (delta: 518.2kB). 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: 27]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L1] int __return_main; [L9] double main__x = 1.0; [L10] double main__x1 = main__x / 1.6; [L12] COND TRUE main__x1 != main__x [L14] main__x = main__x1 [L15] main__x1 = main__x / 1.6 [L12] COND TRUE main__x1 != main__x [L14] main__x = main__x1 [L15] main__x1 = main__x / 1.6 [L12] COND TRUE main__x1 != main__x [L14] main__x = main__x1 [L15] main__x1 = main__x / 1.6 [L12] COND FALSE !(main__x1 != main__x) [L21] int __tmp_1; [L22] __tmp_1 = main__x == 0 [L23] int __VERIFIER_assert__cond; [L24] __VERIFIER_assert__cond = __tmp_1 [L25] COND TRUE __VERIFIER_assert__cond == 0 [L27] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 383.9s, OverallIterations: 3, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 27.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 1 mSolverCounterUnknown, 8 SdHoareTripleChecker+Valid, 6.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 8 mSDsluCounter, 23 SdHoareTripleChecker+Invalid, 5.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 20 IncrementalHoareTripleChecker+Unchecked, 13 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 9 IncrementalHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 10 mSDtfsCounter, 9 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 8 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 48.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9occurred in iteration=0, InterpolantAutomatonStates: 11, 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 7.7s SatisfiabilityAnalysisTime, 159.7s InterpolantComputationTime, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 27 ConstructedInterpolants, 0 QuantifiedInterpolants, 249 SizeOfPredicates, 15 NumberOfNonLiveVariables, 84 ConjunctsInSsa, 25 ConjunctsInUnsatCore, 5 InterpolantComputations, 2 PerfectInterpolantSequences, 0/12 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 15:14:39,725 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8325dc68-e0c4-4623-8332-8e673acfe361/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process [2021-11-22 15:14:39,807 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8325dc68-e0c4-4623-8332-8e673acfe361/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 137 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN