./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_0883.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b360989e-f19c-4d20-bf9a-6a880e484b3b/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b360989e-f19c-4d20-bf9a-6a880e484b3b/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b360989e-f19c-4d20-bf9a-6a880e484b3b/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b360989e-f19c-4d20-bf9a-6a880e484b3b/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_0883.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b360989e-f19c-4d20-bf9a-6a880e484b3b/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b360989e-f19c-4d20-bf9a-6a880e484b3b/bin/utaipan-Q6hlc19bkW --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 06b4b1323d8f9b464c0feec2390cbe4b016fc9fcf8f855908ee9b31b1449e1d6 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-4e7fbc6 [2022-11-23 13:45:01,412 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 13:45:01,415 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 13:45:01,454 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 13:45:01,454 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 13:45:01,458 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 13:45:01,461 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 13:45:01,464 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 13:45:01,466 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 13:45:01,468 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 13:45:01,469 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 13:45:01,471 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 13:45:01,471 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 13:45:01,472 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 13:45:01,473 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 13:45:01,475 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 13:45:01,476 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 13:45:01,477 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 13:45:01,478 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 13:45:01,484 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 13:45:01,487 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 13:45:01,489 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 13:45:01,491 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 13:45:01,492 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 13:45:01,495 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 13:45:01,496 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 13:45:01,496 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 13:45:01,497 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 13:45:01,498 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 13:45:01,499 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 13:45:01,499 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 13:45:01,500 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 13:45:01,501 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 13:45:01,504 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 13:45:01,506 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 13:45:01,506 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 13:45:01,507 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 13:45:01,508 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 13:45:01,508 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 13:45:01,511 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 13:45:01,512 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 13:45:01,528 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b360989e-f19c-4d20-bf9a-6a880e484b3b/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-23 13:45:01,577 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 13:45:01,578 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 13:45:01,578 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 13:45:01,578 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 13:45:01,579 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 13:45:01,579 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 13:45:01,579 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 13:45:01,579 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 13:45:01,580 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 13:45:01,580 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 13:45:01,580 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 13:45:01,580 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 13:45:01,580 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 13:45:01,580 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 13:45:01,581 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 13:45:01,581 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 13:45:01,581 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 13:45:01,581 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 13:45:01,582 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 13:45:01,582 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 13:45:01,582 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 13:45:01,582 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 13:45:01,583 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 13:45:01,583 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 13:45:01,583 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 13:45:01,583 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 13:45:01,585 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 13:45:01,585 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 13:45:01,586 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 13:45:01,586 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 13:45:01,586 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 13:45:01,587 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 13:45:01,587 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 13:45:01,587 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 13:45:01,587 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 13:45:01,588 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 13:45:01,588 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 13:45:01,589 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 13:45:01,589 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 13:45:01,589 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 13:45:01,589 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 13:45:01,589 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_b360989e-f19c-4d20-bf9a-6a880e484b3b/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b360989e-f19c-4d20-bf9a-6a880e484b3b/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 06b4b1323d8f9b464c0feec2390cbe4b016fc9fcf8f855908ee9b31b1449e1d6 [2022-11-23 13:45:01,846 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 13:45:01,899 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 13:45:01,916 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 13:45:01,918 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 13:45:01,918 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 13:45:01,920 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b360989e-f19c-4d20-bf9a-6a880e484b3b/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/float-newlib/double_req_bl_0883.c [2022-11-23 13:45:04,928 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 13:45:05,181 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 13:45:05,181 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b360989e-f19c-4d20-bf9a-6a880e484b3b/sv-benchmarks/c/float-newlib/double_req_bl_0883.c [2022-11-23 13:45:05,193 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b360989e-f19c-4d20-bf9a-6a880e484b3b/bin/utaipan-Q6hlc19bkW/data/fe59e468e/90a77df74033444391f7eb42257e8178/FLAG444e29189 [2022-11-23 13:45:05,228 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b360989e-f19c-4d20-bf9a-6a880e484b3b/bin/utaipan-Q6hlc19bkW/data/fe59e468e/90a77df74033444391f7eb42257e8178 [2022-11-23 13:45:05,230 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 13:45:05,234 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 13:45:05,237 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 13:45:05,238 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 13:45:05,242 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 13:45:05,243 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:45:05" (1/1) ... [2022-11-23 13:45:05,245 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11419320 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:45:05, skipping insertion in model container [2022-11-23 13:45:05,245 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:45:05" (1/1) ... [2022-11-23 13:45:05,253 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 13:45:05,297 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 13:45:05,574 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator has thrown an exception: java.lang.UnsupportedOperationException: createNanOrInfinity is unsupported in non-bitprecise translation at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.IntegerTranslation.createNanOrInfinity(IntegerTranslation.java:795) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.standardfunctions.StandardFunctionHandler.handleNaNOrInfinity(StandardFunctionHandler.java:2048) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.standardfunctions.StandardFunctionHandler.lambda$60(StandardFunctionHandler.java:427) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.standardfunctions.StandardFunctionHandler.translateStandardFunction(StandardFunctionHandler.java:242) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1463) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:267) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.FunctionHandler.handleReturnStatement(FunctionHandler.java:540) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2061) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:193) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1669) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:229) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1087) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:232) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1646) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:229) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1087) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:232) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.FunctionHandler.handleFunctionDefinition(FunctionHandler.java:371) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1489) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:155) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.processTUchild(CHandler.java:3313) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2388) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:600) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:134) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.translate(MainTranslator.java:192) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.run(MainTranslator.java:115) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.(MainTranslator.java:93) at de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver.finish(CACSL2BoogieTranslatorObserver.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-23 13:45:05,579 INFO L158 Benchmark]: Toolchain (without parser) took 343.68ms. Allocated memory is still 192.9MB. Free memory was 165.3MB in the beginning and 154.9MB in the end (delta: 10.4MB). Peak memory consumption was 12.9MB. Max. memory is 16.1GB. [2022-11-23 13:45:05,579 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 130.0MB. Free memory is still 105.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 13:45:05,580 INFO L158 Benchmark]: CACSL2BoogieTranslator took 339.83ms. Allocated memory is still 192.9MB. Free memory was 165.1MB in the beginning and 154.9MB in the end (delta: 10.2MB). Peak memory consumption was 12.9MB. Max. memory is 16.1GB. [2022-11-23 13:45:05,581 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 130.0MB. Free memory is still 105.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 339.83ms. Allocated memory is still 192.9MB. Free memory was 165.1MB in the beginning and 154.9MB in the end (delta: 10.2MB). Peak memory consumption was 12.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - ExceptionOrErrorResult: UnsupportedOperationException: createNanOrInfinity is unsupported in non-bitprecise translation de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: UnsupportedOperationException: createNanOrInfinity is unsupported in non-bitprecise translation: de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.IntegerTranslation.createNanOrInfinity(IntegerTranslation.java:795) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b360989e-f19c-4d20-bf9a-6a880e484b3b/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b360989e-f19c-4d20-bf9a-6a880e484b3b/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b360989e-f19c-4d20-bf9a-6a880e484b3b/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b360989e-f19c-4d20-bf9a-6a880e484b3b/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_0883.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b360989e-f19c-4d20-bf9a-6a880e484b3b/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b360989e-f19c-4d20-bf9a-6a880e484b3b/bin/utaipan-Q6hlc19bkW --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 06b4b1323d8f9b464c0feec2390cbe4b016fc9fcf8f855908ee9b31b1449e1d6 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-4e7fbc6 [2022-11-23 13:45:07,849 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 13:45:07,851 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 13:45:07,881 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 13:45:07,881 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 13:45:07,885 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 13:45:07,889 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 13:45:07,891 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 13:45:07,892 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 13:45:07,893 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 13:45:07,894 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 13:45:07,895 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 13:45:07,896 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 13:45:07,896 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 13:45:07,898 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 13:45:07,899 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 13:45:07,902 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 13:45:07,907 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 13:45:07,911 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 13:45:07,918 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 13:45:07,924 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 13:45:07,925 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 13:45:07,926 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 13:45:07,927 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 13:45:07,930 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 13:45:07,930 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 13:45:07,931 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 13:45:07,932 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 13:45:07,932 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 13:45:07,933 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 13:45:07,933 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 13:45:07,934 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 13:45:07,935 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 13:45:07,953 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 13:45:07,956 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 13:45:07,956 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 13:45:07,957 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 13:45:07,957 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 13:45:07,957 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 13:45:07,958 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 13:45:07,959 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 13:45:07,959 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b360989e-f19c-4d20-bf9a-6a880e484b3b/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2022-11-23 13:45:08,003 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 13:45:08,005 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 13:45:08,006 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 13:45:08,007 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 13:45:08,007 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 13:45:08,008 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 13:45:08,008 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 13:45:08,008 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 13:45:08,009 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 13:45:08,009 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 13:45:08,010 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 13:45:08,010 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 13:45:08,011 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 13:45:08,011 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 13:45:08,012 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 13:45:08,012 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 13:45:08,012 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 13:45:08,012 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 13:45:08,012 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 13:45:08,013 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-23 13:45:08,013 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-23 13:45:08,013 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-23 13:45:08,013 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 13:45:08,013 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 13:45:08,014 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 13:45:08,014 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 13:45:08,014 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 13:45:08,014 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-23 13:45:08,015 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 13:45:08,015 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 13:45:08,015 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 13:45:08,015 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 13:45:08,016 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 13:45:08,016 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-23 13:45:08,016 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-23 13:45:08,016 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 13:45:08,017 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 13:45:08,017 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-23 13:45:08,017 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_b360989e-f19c-4d20-bf9a-6a880e484b3b/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b360989e-f19c-4d20-bf9a-6a880e484b3b/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 06b4b1323d8f9b464c0feec2390cbe4b016fc9fcf8f855908ee9b31b1449e1d6 [2022-11-23 13:45:08,428 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 13:45:08,454 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 13:45:08,457 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 13:45:08,458 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 13:45:08,460 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 13:45:08,461 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b360989e-f19c-4d20-bf9a-6a880e484b3b/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/float-newlib/double_req_bl_0883.c [2022-11-23 13:45:11,641 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 13:45:11,890 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 13:45:11,891 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b360989e-f19c-4d20-bf9a-6a880e484b3b/sv-benchmarks/c/float-newlib/double_req_bl_0883.c [2022-11-23 13:45:11,918 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b360989e-f19c-4d20-bf9a-6a880e484b3b/bin/utaipan-Q6hlc19bkW/data/d03a2eaca/5f07fb29c2764028a805bd4e468c27f0/FLAG487c3549d [2022-11-23 13:45:11,941 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b360989e-f19c-4d20-bf9a-6a880e484b3b/bin/utaipan-Q6hlc19bkW/data/d03a2eaca/5f07fb29c2764028a805bd4e468c27f0 [2022-11-23 13:45:11,943 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 13:45:11,967 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 13:45:11,970 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 13:45:11,971 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 13:45:11,974 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 13:45:11,975 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:45:11" (1/1) ... [2022-11-23 13:45:11,977 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58d51c68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:45:11, skipping insertion in model container [2022-11-23 13:45:11,977 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:45:11" (1/1) ... [2022-11-23 13:45:11,984 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 13:45:12,025 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 13:45:12,313 WARN L237 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_b360989e-f19c-4d20-bf9a-6a880e484b3b/sv-benchmarks/c/float-newlib/double_req_bl_0883.c[14409,14422] [2022-11-23 13:45:12,327 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 13:45:12,342 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 13:45:12,488 WARN L237 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_b360989e-f19c-4d20-bf9a-6a880e484b3b/sv-benchmarks/c/float-newlib/double_req_bl_0883.c[14409,14422] [2022-11-23 13:45:12,488 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 13:45:12,515 INFO L208 MainTranslator]: Completed translation [2022-11-23 13:45:12,516 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:45:12 WrapperNode [2022-11-23 13:45:12,516 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 13:45:12,517 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 13:45:12,517 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 13:45:12,518 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 13:45:12,525 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:45:12" (1/1) ... [2022-11-23 13:45:12,555 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:45:12" (1/1) ... [2022-11-23 13:45:12,625 INFO L138 Inliner]: procedures = 25, calls = 164, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 757 [2022-11-23 13:45:12,625 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 13:45:12,626 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 13:45:12,627 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 13:45:12,627 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 13:45:12,637 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:45:12" (1/1) ... [2022-11-23 13:45:12,638 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:45:12" (1/1) ... [2022-11-23 13:45:12,658 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:45:12" (1/1) ... [2022-11-23 13:45:12,668 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:45:12" (1/1) ... [2022-11-23 13:45:12,706 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:45:12" (1/1) ... [2022-11-23 13:45:12,727 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:45:12" (1/1) ... [2022-11-23 13:45:12,731 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:45:12" (1/1) ... [2022-11-23 13:45:12,737 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:45:12" (1/1) ... [2022-11-23 13:45:12,754 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 13:45:12,758 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 13:45:12,759 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 13:45:12,759 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 13:45:12,760 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:45:12" (1/1) ... [2022-11-23 13:45:12,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 13:45:12,783 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b360989e-f19c-4d20-bf9a-6a880e484b3b/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 13:45:12,797 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b360989e-f19c-4d20-bf9a-6a880e484b3b/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 13:45:12,823 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b360989e-f19c-4d20-bf9a-6a880e484b3b/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 13:45:12,846 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 13:45:12,846 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2022-11-23 13:45:12,846 INFO L130 BoogieDeclarations]: Found specification of procedure copysign_double [2022-11-23 13:45:12,846 INFO L138 BoogieDeclarations]: Found implementation of procedure copysign_double [2022-11-23 13:45:12,846 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2022-11-23 13:45:12,846 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-23 13:45:12,847 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 13:45:12,847 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8 [2022-11-23 13:45:12,847 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-23 13:45:12,848 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 13:45:12,848 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 13:45:12,848 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-23 13:45:12,848 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 13:45:13,083 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 13:45:13,085 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 13:46:16,897 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 13:46:16,905 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 13:46:16,906 INFO L300 CfgBuilder]: Removed 60 assume(true) statements. [2022-11-23 13:46:16,908 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:46:16 BoogieIcfgContainer [2022-11-23 13:46:16,908 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 13:46:16,911 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 13:46:16,911 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 13:46:16,914 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 13:46:16,914 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 01:45:11" (1/3) ... [2022-11-23 13:46:16,915 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26d8dc2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:46:16, skipping insertion in model container [2022-11-23 13:46:16,915 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:45:12" (2/3) ... [2022-11-23 13:46:16,916 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26d8dc2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:46:16, skipping insertion in model container [2022-11-23 13:46:16,916 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:46:16" (3/3) ... [2022-11-23 13:46:16,917 INFO L112 eAbstractionObserver]: Analyzing ICFG double_req_bl_0883.c [2022-11-23 13:46:16,936 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 13:46:16,936 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 13:46:16,988 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 13:46:16,994 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6c2d819, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 13:46:16,994 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 13:46:16,999 INFO L276 IsEmpty]: Start isEmpty. Operand has 196 states, 190 states have (on average 1.7157894736842105) internal successors, (326), 191 states have internal predecessors, (326), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-23 13:46:17,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-23 13:46:17,008 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:46:17,009 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:46:17,009 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 13:46:17,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:46:17,014 INFO L85 PathProgramCache]: Analyzing trace with hash 846078371, now seen corresponding path program 1 times [2022-11-23 13:46:17,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 13:46:17,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1234287416] [2022-11-23 13:46:17,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:46:17,032 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 13:46:17,032 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b360989e-f19c-4d20-bf9a-6a880e484b3b/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 13:46:17,037 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b360989e-f19c-4d20-bf9a-6a880e484b3b/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 13:46:17,042 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b360989e-f19c-4d20-bf9a-6a880e484b3b/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-23 13:46:17,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:46:17,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-23 13:46:17,378 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 13:46:17,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 13:46:17,397 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 13:46:17,398 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 13:46:17,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1234287416] [2022-11-23 13:46:17,399 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1234287416] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:46:17,399 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:46:17,400 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 13:46:17,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796874433] [2022-11-23 13:46:17,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:46:17,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-23 13:46:17,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 13:46:17,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-23 13:46:17,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-23 13:46:17,449 INFO L87 Difference]: Start difference. First operand has 196 states, 190 states have (on average 1.7157894736842105) internal successors, (326), 191 states have internal predecessors, (326), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:46:17,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:46:17,497 INFO L93 Difference]: Finished difference Result 389 states and 663 transitions. [2022-11-23 13:46:17,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-23 13:46:17,501 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 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 13 [2022-11-23 13:46:17,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:46:17,510 INFO L225 Difference]: With dead ends: 389 [2022-11-23 13:46:17,511 INFO L226 Difference]: Without dead ends: 192 [2022-11-23 13:46:17,514 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-23 13:46:17,519 INFO L413 NwaCegarLoop]: 271 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 271 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 13:46:17,520 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 13:46:17,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2022-11-23 13:46:17,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 192. [2022-11-23 13:46:17,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 187 states have (on average 1.3903743315508021) internal successors, (260), 187 states have internal predecessors, (260), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-23 13:46:17,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 266 transitions. [2022-11-23 13:46:17,571 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 266 transitions. Word has length 13 [2022-11-23 13:46:17,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:46:17,571 INFO L495 AbstractCegarLoop]: Abstraction has 192 states and 266 transitions. [2022-11-23 13:46:17,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:46:17,572 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 266 transitions. [2022-11-23 13:46:17,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-23 13:46:17,573 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:46:17,573 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:46:17,592 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b360989e-f19c-4d20-bf9a-6a880e484b3b/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-23 13:46:17,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b360989e-f19c-4d20-bf9a-6a880e484b3b/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 13:46:17,779 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 13:46:17,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:46:17,780 INFO L85 PathProgramCache]: Analyzing trace with hash -207932132, now seen corresponding path program 1 times [2022-11-23 13:46:17,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 13:46:17,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [378160283] [2022-11-23 13:46:17,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:46:17,782 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 13:46:17,782 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b360989e-f19c-4d20-bf9a-6a880e484b3b/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 13:46:17,783 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b360989e-f19c-4d20-bf9a-6a880e484b3b/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 13:46:17,784 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b360989e-f19c-4d20-bf9a-6a880e484b3b/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-23 13:46:18,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:46:18,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-23 13:46:18,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 13:46:23,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 13:46:23,575 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 13:46:23,575 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 13:46:23,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [378160283] [2022-11-23 13:46:23,577 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [378160283] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:46:23,578 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:46:23,578 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 13:46:23,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434641469] [2022-11-23 13:46:23,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:46:23,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 13:46:23,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 13:46:23,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 13:46:23,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=11, Unknown=2, NotChecked=0, Total=20 [2022-11-23 13:46:23,583 INFO L87 Difference]: Start difference. First operand 192 states and 266 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:46:25,636 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-23 13:46:27,664 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-23 13:46:31,933 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-23 13:46:36,856 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.89s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-23 13:46:41,853 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-23 13:46:43,903 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-23 13:46:46,471 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.50s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-23 13:46:46,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:46:46,482 INFO L93 Difference]: Finished difference Result 212 states and 287 transitions. [2022-11-23 13:46:46,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 13:46:46,617 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 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 16 [2022-11-23 13:46:46,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:46:46,618 INFO L225 Difference]: With dead ends: 212 [2022-11-23 13:46:46,619 INFO L226 Difference]: Without dead ends: 200 [2022-11-23 13:46:46,619 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.2s TimeCoverageRelationStatistics Valid=17, Invalid=22, Unknown=3, NotChecked=0, Total=42 [2022-11-23 13:46:46,620 INFO L413 NwaCegarLoop]: 223 mSDtfsCounter, 514 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 2 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 514 SdHoareTripleChecker+Valid, 500 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.2s IncrementalHoareTripleChecker+Time [2022-11-23 13:46:46,621 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [514 Valid, 500 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 38 Invalid, 6 Unknown, 0 Unchecked, 18.2s Time] [2022-11-23 13:46:46,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2022-11-23 13:46:46,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 192. [2022-11-23 13:46:46,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 187 states have (on average 1.374331550802139) internal successors, (257), 187 states have internal predecessors, (257), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-23 13:46:46,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 263 transitions. [2022-11-23 13:46:46,650 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 263 transitions. Word has length 16 [2022-11-23 13:46:46,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:46:46,650 INFO L495 AbstractCegarLoop]: Abstraction has 192 states and 263 transitions. [2022-11-23 13:46:46,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:46:46,651 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 263 transitions. [2022-11-23 13:46:46,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-23 13:46:46,652 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:46:46,652 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:46:46,670 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b360989e-f19c-4d20-bf9a-6a880e484b3b/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-23 13:46:46,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b360989e-f19c-4d20-bf9a-6a880e484b3b/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 13:46:46,870 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 13:46:46,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:46:46,871 INFO L85 PathProgramCache]: Analyzing trace with hash 1270004023, now seen corresponding path program 1 times [2022-11-23 13:46:46,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 13:46:46,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [988417767] [2022-11-23 13:46:46,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:46:46,872 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 13:46:46,872 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b360989e-f19c-4d20-bf9a-6a880e484b3b/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 13:46:46,874 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b360989e-f19c-4d20-bf9a-6a880e484b3b/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 13:46:46,875 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b360989e-f19c-4d20-bf9a-6a880e484b3b/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-23 13:46:47,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:46:47,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-23 13:46:47,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 13:46:49,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 13:46:49,164 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 13:46:49,164 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 13:46:49,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [988417767] [2022-11-23 13:46:49,164 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [988417767] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:46:49,164 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:46:49,165 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-23 13:46:49,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248107088] [2022-11-23 13:46:49,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:46:49,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 13:46:49,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 13:46:49,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 13:46:49,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-23 13:46:49,167 INFO L87 Difference]: Start difference. First operand 192 states and 263 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:46:54,754 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-23 13:46:55,833 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result VALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-23 13:46:58,180 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-23 13:46:58,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:46:58,567 INFO L93 Difference]: Finished difference Result 375 states and 504 transitions. [2022-11-23 13:46:58,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 13:46:58,569 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 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 18 [2022-11-23 13:46:58,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:46:58,570 INFO L225 Difference]: With dead ends: 375 [2022-11-23 13:46:58,571 INFO L226 Difference]: Without dead ends: 195 [2022-11-23 13:46:58,572 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-23 13:46:58,573 INFO L413 NwaCegarLoop]: 205 mSDtfsCounter, 747 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 22 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 747 SdHoareTripleChecker+Valid, 392 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2022-11-23 13:46:58,573 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [747 Valid, 392 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 29 Invalid, 2 Unknown, 0 Unchecked, 8.2s Time] [2022-11-23 13:46:58,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2022-11-23 13:46:58,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 179. [2022-11-23 13:46:58,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 174 states have (on average 1.2758620689655173) internal successors, (222), 174 states have internal predecessors, (222), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-23 13:46:58,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 228 transitions. [2022-11-23 13:46:58,622 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 228 transitions. Word has length 18 [2022-11-23 13:46:58,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:46:58,623 INFO L495 AbstractCegarLoop]: Abstraction has 179 states and 228 transitions. [2022-11-23 13:46:58,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:46:58,623 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 228 transitions. [2022-11-23 13:46:58,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-23 13:46:58,624 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:46:58,625 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:46:58,643 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b360989e-f19c-4d20-bf9a-6a880e484b3b/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-23 13:46:58,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b360989e-f19c-4d20-bf9a-6a880e484b3b/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 13:46:58,842 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 13:46:58,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:46:58,842 INFO L85 PathProgramCache]: Analyzing trace with hash 460657397, now seen corresponding path program 1 times [2022-11-23 13:46:58,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 13:46:58,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [960728826] [2022-11-23 13:46:58,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:46:58,843 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 13:46:58,843 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b360989e-f19c-4d20-bf9a-6a880e484b3b/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 13:46:58,846 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b360989e-f19c-4d20-bf9a-6a880e484b3b/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 13:46:58,852 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b360989e-f19c-4d20-bf9a-6a880e484b3b/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-23 13:46:59,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:46:59,175 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-23 13:46:59,178 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 13:46:59,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:46:59,976 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2022-11-23 13:47:01,058 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 13:47:01,058 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 15 [2022-11-23 13:47:05,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 13:47:05,283 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 13:47:05,284 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 13:47:05,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [960728826] [2022-11-23 13:47:05,284 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [960728826] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:47:05,284 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:47:05,284 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-23 13:47:05,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052130435] [2022-11-23 13:47:05,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:47:05,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 13:47:05,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 13:47:05,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 13:47:05,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=30, Unknown=1, NotChecked=0, Total=42 [2022-11-23 13:47:05,286 INFO L87 Difference]: Start difference. First operand 179 states and 228 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:47:08,102 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-23 13:47:13,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:47:13,554 INFO L93 Difference]: Finished difference Result 187 states and 235 transitions. [2022-11-23 13:47:13,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 13:47:13,558 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 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 18 [2022-11-23 13:47:13,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:47:13,558 INFO L225 Difference]: With dead ends: 187 [2022-11-23 13:47:13,559 INFO L226 Difference]: Without dead ends: 80 [2022-11-23 13:47:13,559 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=35, Invalid=74, Unknown=1, NotChecked=0, Total=110 [2022-11-23 13:47:13,560 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 395 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 395 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-11-23 13:47:13,561 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [395 Valid, 159 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 61 Invalid, 1 Unknown, 0 Unchecked, 4.6s Time] [2022-11-23 13:47:13,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2022-11-23 13:47:13,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2022-11-23 13:47:13,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 79 states have (on average 1.3164556962025316) internal successors, (104), 79 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:47:13,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 104 transitions. [2022-11-23 13:47:13,583 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 104 transitions. Word has length 18 [2022-11-23 13:47:13,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:47:13,584 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 104 transitions. [2022-11-23 13:47:13,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:47:13,584 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 104 transitions. [2022-11-23 13:47:13,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-23 13:47:13,585 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:47:13,586 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:47:13,604 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b360989e-f19c-4d20-bf9a-6a880e484b3b/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-23 13:47:13,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b360989e-f19c-4d20-bf9a-6a880e484b3b/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 13:47:13,804 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 13:47:13,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:47:13,804 INFO L85 PathProgramCache]: Analyzing trace with hash -1407556991, now seen corresponding path program 1 times [2022-11-23 13:47:13,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 13:47:13,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [71520467] [2022-11-23 13:47:13,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:47:13,805 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 13:47:13,805 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b360989e-f19c-4d20-bf9a-6a880e484b3b/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 13:47:13,806 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b360989e-f19c-4d20-bf9a-6a880e484b3b/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 13:47:13,808 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b360989e-f19c-4d20-bf9a-6a880e484b3b/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-23 13:47:14,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:47:14,388 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-23 13:47:14,391 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 13:47:18,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 13:47:18,763 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 13:47:18,763 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 13:47:18,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [71520467] [2022-11-23 13:47:18,763 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [71520467] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:47:18,764 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:47:18,764 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-23 13:47:18,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850882196] [2022-11-23 13:47:18,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:47:18,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-23 13:47:18,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 13:47:18,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-23 13:47:18,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-23 13:47:18,766 INFO L87 Difference]: Start difference. First operand 80 states and 104 transitions. Second operand has 10 states, 10 states have (on average 2.2) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:47:26,133 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-23 13:47:29,167 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.83s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-23 13:47:30,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:47:30,635 INFO L93 Difference]: Finished difference Result 97 states and 119 transitions. [2022-11-23 13:47:30,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-23 13:47:30,647 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.2) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 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 22 [2022-11-23 13:47:30,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:47:30,648 INFO L225 Difference]: With dead ends: 97 [2022-11-23 13:47:30,648 INFO L226 Difference]: Without dead ends: 88 [2022-11-23 13:47:30,649 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2022-11-23 13:47:30,650 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 314 mSDsluCounter, 458 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 314 SdHoareTripleChecker+Valid, 548 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time [2022-11-23 13:47:30,650 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [314 Valid, 548 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 79 Invalid, 2 Unknown, 0 Unchecked, 8.9s Time] [2022-11-23 13:47:30,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2022-11-23 13:47:30,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 79. [2022-11-23 13:47:30,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 78 states have (on average 1.294871794871795) internal successors, (101), 78 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:47:30,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 101 transitions. [2022-11-23 13:47:30,668 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 101 transitions. Word has length 22 [2022-11-23 13:47:30,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:47:30,668 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 101 transitions. [2022-11-23 13:47:30,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.2) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:47:30,669 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 101 transitions. [2022-11-23 13:47:30,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-23 13:47:30,671 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:47:30,671 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:47:30,695 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b360989e-f19c-4d20-bf9a-6a880e484b3b/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-23 13:47:30,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b360989e-f19c-4d20-bf9a-6a880e484b3b/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 13:47:30,890 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 13:47:30,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:47:30,890 INFO L85 PathProgramCache]: Analyzing trace with hash 2049555245, now seen corresponding path program 1 times [2022-11-23 13:47:30,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 13:47:30,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [256929080] [2022-11-23 13:47:30,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:47:30,891 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 13:47:30,891 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b360989e-f19c-4d20-bf9a-6a880e484b3b/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 13:47:30,897 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b360989e-f19c-4d20-bf9a-6a880e484b3b/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 13:47:30,939 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b360989e-f19c-4d20-bf9a-6a880e484b3b/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-23 13:47:31,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:47:31,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-23 13:47:31,287 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 13:47:31,809 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2022-11-23 13:47:37,806 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 13:47:37,806 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 13 [2022-11-23 13:47:40,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 13:47:40,206 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 13:47:40,206 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 13:47:40,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [256929080] [2022-11-23 13:47:40,207 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [256929080] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:47:40,207 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:47:40,207 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-23 13:47:40,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88355474] [2022-11-23 13:47:40,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:47:40,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-23 13:47:40,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 13:47:40,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-23 13:47:40,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-11-23 13:47:40,209 INFO L87 Difference]: Start difference. First operand 79 states and 101 transitions. Second operand has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:47:52,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:47:52,276 INFO L93 Difference]: Finished difference Result 89 states and 110 transitions. [2022-11-23 13:47:52,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-23 13:47:52,278 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 states have internal predecessors, (22), 0 states have call successors, (0), 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 22 [2022-11-23 13:47:52,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:47:52,278 INFO L225 Difference]: With dead ends: 89 [2022-11-23 13:47:52,278 INFO L226 Difference]: Without dead ends: 79 [2022-11-23 13:47:52,279 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 10.1s TimeCoverageRelationStatistics Valid=106, Invalid=236, Unknown=0, NotChecked=0, Total=342 [2022-11-23 13:47:52,280 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 131 mSDsluCounter, 711 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 794 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2022-11-23 13:47:52,280 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 794 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2022-11-23 13:47:52,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2022-11-23 13:47:52,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 77. [2022-11-23 13:47:52,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 76 states have (on average 1.2894736842105263) internal successors, (98), 76 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:47:52,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 98 transitions. [2022-11-23 13:47:52,300 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 98 transitions. Word has length 22 [2022-11-23 13:47:52,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:47:52,301 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 98 transitions. [2022-11-23 13:47:52,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:47:52,301 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 98 transitions. [2022-11-23 13:47:52,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-23 13:47:52,306 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:47:52,306 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:47:52,329 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b360989e-f19c-4d20-bf9a-6a880e484b3b/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-23 13:47:52,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b360989e-f19c-4d20-bf9a-6a880e484b3b/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 13:47:52,523 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 13:47:52,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:47:52,524 INFO L85 PathProgramCache]: Analyzing trace with hash -746579278, now seen corresponding path program 1 times [2022-11-23 13:47:52,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 13:47:52,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [184040513] [2022-11-23 13:47:52,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:47:52,525 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 13:47:52,525 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b360989e-f19c-4d20-bf9a-6a880e484b3b/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 13:47:52,526 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b360989e-f19c-4d20-bf9a-6a880e484b3b/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 13:47:52,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b360989e-f19c-4d20-bf9a-6a880e484b3b/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-23 13:47:53,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:47:53,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-23 13:47:53,210 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 13:47:58,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 13:47:58,971 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 13:47:58,971 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 13:47:58,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [184040513] [2022-11-23 13:47:58,971 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [184040513] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:47:58,971 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:47:58,972 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-23 13:47:58,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005081666] [2022-11-23 13:47:58,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:47:58,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-23 13:47:58,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 13:47:58,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-23 13:47:58,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-23 13:47:58,973 INFO L87 Difference]: Start difference. First operand 77 states and 98 transitions. Second operand has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 11 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:48:06,365 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-23 13:48:13,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:48:13,025 INFO L93 Difference]: Finished difference Result 94 states and 113 transitions. [2022-11-23 13:48:13,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-23 13:48:13,026 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 11 states have internal predecessors, (28), 0 states have call successors, (0), 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 28 [2022-11-23 13:48:13,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:48:13,027 INFO L225 Difference]: With dead ends: 94 [2022-11-23 13:48:13,027 INFO L226 Difference]: Without dead ends: 85 [2022-11-23 13:48:13,028 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=116, Invalid=264, Unknown=0, NotChecked=0, Total=380 [2022-11-23 13:48:13,029 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 292 mSDsluCounter, 530 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 292 SdHoareTripleChecker+Valid, 612 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.8s IncrementalHoareTripleChecker+Time [2022-11-23 13:48:13,029 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [292 Valid, 612 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 9.8s Time] [2022-11-23 13:48:13,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2022-11-23 13:48:13,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 77. [2022-11-23 13:48:13,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 76 states have (on average 1.263157894736842) internal successors, (96), 76 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:48:13,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 96 transitions. [2022-11-23 13:48:13,043 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 96 transitions. Word has length 28 [2022-11-23 13:48:13,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:48:13,044 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 96 transitions. [2022-11-23 13:48:13,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 11 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:48:13,044 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 96 transitions. [2022-11-23 13:48:13,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-11-23 13:48:13,045 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:48:13,045 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:48:13,072 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b360989e-f19c-4d20-bf9a-6a880e484b3b/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-23 13:48:13,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b360989e-f19c-4d20-bf9a-6a880e484b3b/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 13:48:13,268 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 13:48:13,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:48:13,268 INFO L85 PathProgramCache]: Analyzing trace with hash 2102385717, now seen corresponding path program 1 times [2022-11-23 13:48:13,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 13:48:13,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1013535628] [2022-11-23 13:48:13,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:48:13,269 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 13:48:13,269 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b360989e-f19c-4d20-bf9a-6a880e484b3b/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 13:48:13,270 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b360989e-f19c-4d20-bf9a-6a880e484b3b/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 13:48:13,271 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b360989e-f19c-4d20-bf9a-6a880e484b3b/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-23 13:48:14,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:48:14,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-23 13:48:14,344 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 13:48:16,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 13:48:16,149 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 13:48:16,149 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 13:48:16,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1013535628] [2022-11-23 13:48:16,150 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1013535628] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:48:16,150 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:48:16,150 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-23 13:48:16,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183363299] [2022-11-23 13:48:16,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:48:16,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 13:48:16,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 13:48:16,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 13:48:16,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-23 13:48:16,151 INFO L87 Difference]: Start difference. First operand 77 states and 96 transitions. Second operand has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:48:17,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:48:17,416 INFO L93 Difference]: Finished difference Result 85 states and 103 transitions. [2022-11-23 13:48:17,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 13:48:17,416 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2022-11-23 13:48:17,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:48:17,416 INFO L225 Difference]: With dead ends: 85 [2022-11-23 13:48:17,417 INFO L226 Difference]: Without dead ends: 36 [2022-11-23 13:48:17,417 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-23 13:48:17,418 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 64 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-23 13:48:17,418 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 106 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-23 13:48:17,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-11-23 13:48:17,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2022-11-23 13:48:17,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.0285714285714285) internal successors, (36), 35 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:48:17,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 36 transitions. [2022-11-23 13:48:17,431 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 36 transitions. Word has length 31 [2022-11-23 13:48:17,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:48:17,432 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 36 transitions. [2022-11-23 13:48:17,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:48:17,432 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 36 transitions. [2022-11-23 13:48:17,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-11-23 13:48:17,433 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:48:17,433 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:48:17,458 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b360989e-f19c-4d20-bf9a-6a880e484b3b/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-23 13:48:17,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b360989e-f19c-4d20-bf9a-6a880e484b3b/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 13:48:17,636 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 13:48:17,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:48:17,636 INFO L85 PathProgramCache]: Analyzing trace with hash -569210957, now seen corresponding path program 1 times [2022-11-23 13:48:17,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 13:48:17,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1562119973] [2022-11-23 13:48:17,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:48:17,637 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 13:48:17,637 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b360989e-f19c-4d20-bf9a-6a880e484b3b/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 13:48:17,638 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b360989e-f19c-4d20-bf9a-6a880e484b3b/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 13:48:17,639 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b360989e-f19c-4d20-bf9a-6a880e484b3b/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-23 13:48:17,927 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b360989e-f19c-4d20-bf9a-6a880e484b3b/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Ended with exit code 139 [2022-11-23 13:48:17,930 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b360989e-f19c-4d20-bf9a-6a880e484b3b/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10) with exit command (exit)) Received EOF on stdin. No stderr output. at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheck.(TraceCheck.java:236) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheck.(InterpolatingTraceCheck.java:91) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:132) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:121) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b360989e-f19c-4d20-bf9a-6a880e484b3b/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10) with exit command (exit)) Received EOF on stdin. No stderr output. at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:243) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:262) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:155) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.AnnotateAndAsserter.buildAnnotatedSsaAndAssertTerms(AnnotateAndAsserter.java:130) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheck.checkTrace(TraceCheck.java:317) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheck.(TraceCheck.java:215) ... 30 more Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1465) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:658) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:239) ... 37 more [2022-11-23 13:48:17,933 INFO L158 Benchmark]: Toolchain (without parser) took 185988.61ms. Allocated memory was 75.5MB in the beginning and 94.4MB in the end (delta: 18.9MB). Free memory was 32.4MB in the beginning and 42.1MB in the end (delta: -9.7MB). Peak memory consumption was 11.7MB. Max. memory is 16.1GB. [2022-11-23 13:48:17,934 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 75.5MB. Free memory is still 53.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 13:48:17,934 INFO L158 Benchmark]: CACSL2BoogieTranslator took 546.09ms. Allocated memory is still 75.5MB. Free memory was 57.4MB in the beginning and 34.7MB in the end (delta: 22.7MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2022-11-23 13:48:17,934 INFO L158 Benchmark]: Boogie Procedure Inliner took 108.29ms. Allocated memory is still 75.5MB. Free memory was 34.4MB in the beginning and 54.6MB in the end (delta: -20.2MB). Peak memory consumption was 7.0MB. Max. memory is 16.1GB. [2022-11-23 13:48:17,935 INFO L158 Benchmark]: Boogie Preprocessor took 131.12ms. Allocated memory is still 75.5MB. Free memory was 54.6MB in the beginning and 49.3MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-23 13:48:17,935 INFO L158 Benchmark]: RCFGBuilder took 64150.38ms. Allocated memory was 75.5MB in the beginning and 94.4MB in the end (delta: 18.9MB). Free memory was 49.3MB in the beginning and 58.5MB in the end (delta: -9.1MB). Peak memory consumption was 32.2MB. Max. memory is 16.1GB. [2022-11-23 13:48:17,935 INFO L158 Benchmark]: TraceAbstraction took 121022.20ms. Allocated memory is still 94.4MB. Free memory was 57.9MB in the beginning and 42.1MB in the end (delta: 15.7MB). Peak memory consumption was 14.6MB. Max. memory is 16.1GB. [2022-11-23 13:48:17,937 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 75.5MB. Free memory is still 53.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 546.09ms. Allocated memory is still 75.5MB. Free memory was 57.4MB in the beginning and 34.7MB in the end (delta: 22.7MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 108.29ms. Allocated memory is still 75.5MB. Free memory was 34.4MB in the beginning and 54.6MB in the end (delta: -20.2MB). Peak memory consumption was 7.0MB. Max. memory is 16.1GB. * Boogie Preprocessor took 131.12ms. Allocated memory is still 75.5MB. Free memory was 54.6MB in the beginning and 49.3MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 64150.38ms. Allocated memory was 75.5MB in the beginning and 94.4MB in the end (delta: 18.9MB). Free memory was 49.3MB in the beginning and 58.5MB in the end (delta: -9.1MB). Peak memory consumption was 32.2MB. Max. memory is 16.1GB. * TraceAbstraction took 121022.20ms. Allocated memory is still 94.4MB. Free memory was 57.9MB in the beginning and 42.1MB in the end (delta: 15.7MB). Peak memory consumption was 14.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b360989e-f19c-4d20-bf9a-6a880e484b3b/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10) with exit command (exit)) Received EOF on stdin. No stderr output. de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b360989e-f19c-4d20-bf9a-6a880e484b3b/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10) with exit command (exit)) Received EOF on stdin. No stderr output.: de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheck.(TraceCheck.java:236) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-11-23 13:48:18,144 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b360989e-f19c-4d20-bf9a-6a880e484b3b/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process [2022-11-23 13:48:18,249 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b360989e-f19c-4d20-bf9a-6a880e484b3b/bin/utaipan-Q6hlc19bkW/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: ERROR: ExceptionOrErrorResult: AssertionError: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b360989e-f19c-4d20-bf9a-6a880e484b3b/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10) with exit command (exit)) Received EOF on stdin. No stderr output.