./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_normal_file-35.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cf1a7837 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdc0b6ca-c58c-4864-b8bc-6f339d9e071e/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdc0b6ca-c58c-4864-b8bc-6f339d9e071e/bin/utaipan-verify-NcY6lQBIFX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdc0b6ca-c58c-4864-b8bc-6f339d9e071e/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdc0b6ca-c58c-4864-b8bc-6f339d9e071e/bin/utaipan-verify-NcY6lQBIFX/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_normal_file-35.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdc0b6ca-c58c-4864-b8bc-6f339d9e071e/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdc0b6ca-c58c-4864-b8bc-6f339d9e071e/bin/utaipan-verify-NcY6lQBIFX --witnessprinter.witness.filename witness --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 7ec09e5648980bc5a4329f49d7e2504b195b194638f2d82967f3c7db0031611d --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 00:58:03,472 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 00:58:03,597 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdc0b6ca-c58c-4864-b8bc-6f339d9e071e/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-12 00:58:03,607 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 00:58:03,608 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 00:58:03,643 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 00:58:03,644 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 00:58:03,645 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 00:58:03,646 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 00:58:03,651 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 00:58:03,652 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 00:58:03,653 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 00:58:03,654 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 00:58:03,656 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-12 00:58:03,656 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 00:58:03,657 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 00:58:03,657 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-12 00:58:03,658 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-12 00:58:03,658 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 00:58:03,659 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-12 00:58:03,659 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-12 00:58:03,660 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-12 00:58:03,661 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 00:58:03,662 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 00:58:03,662 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 00:58:03,663 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 00:58:03,663 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 00:58:03,664 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 00:58:03,664 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 00:58:03,665 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 00:58:03,666 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 00:58:03,667 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 00:58:03,667 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 00:58:03,667 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 00:58:03,668 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 00:58:03,668 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 00:58:03,669 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:58:03,669 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 00:58:03,669 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 00:58:03,670 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 00:58:03,671 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-12 00:58:03,671 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 00:58:03,672 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 00:58:03,672 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 00:58:03,672 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 00:58:03,673 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_bdc0b6ca-c58c-4864-b8bc-6f339d9e071e/bin/utaipan-verify-NcY6lQBIFX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdc0b6ca-c58c-4864-b8bc-6f339d9e071e/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7ec09e5648980bc5a4329f49d7e2504b195b194638f2d82967f3c7db0031611d [2023-11-12 00:58:03,990 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 00:58:04,033 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 00:58:04,036 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 00:58:04,037 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 00:58:04,038 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 00:58:04,040 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdc0b6ca-c58c-4864-b8bc-6f339d9e071e/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_normal_file-35.i [2023-11-12 00:58:07,117 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 00:58:07,340 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 00:58:07,341 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdc0b6ca-c58c-4864-b8bc-6f339d9e071e/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_normal_file-35.i [2023-11-12 00:58:07,355 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdc0b6ca-c58c-4864-b8bc-6f339d9e071e/bin/utaipan-verify-NcY6lQBIFX/data/59be22642/bfbc391628ba4f3c9a952ffb8858addc/FLAG3b8336616 [2023-11-12 00:58:07,368 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdc0b6ca-c58c-4864-b8bc-6f339d9e071e/bin/utaipan-verify-NcY6lQBIFX/data/59be22642/bfbc391628ba4f3c9a952ffb8858addc [2023-11-12 00:58:07,371 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 00:58:07,372 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 00:58:07,376 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 00:58:07,377 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 00:58:07,382 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 00:58:07,383 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:58:07" (1/1) ... [2023-11-12 00:58:07,384 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c395bea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:58:07, skipping insertion in model container [2023-11-12 00:58:07,385 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:58:07" (1/1) ... [2023-11-12 00:58:07,412 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 00:58:07,577 WARN L240 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_bdc0b6ca-c58c-4864-b8bc-6f339d9e071e/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_normal_file-35.i[913,926] [2023-11-12 00:58:07,619 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:58:07,632 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 00:58:07,646 WARN L240 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_bdc0b6ca-c58c-4864-b8bc-6f339d9e071e/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_normal_file-35.i[913,926] [2023-11-12 00:58:07,676 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:58:07,701 INFO L206 MainTranslator]: Completed translation [2023-11-12 00:58:07,702 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:58:07 WrapperNode [2023-11-12 00:58:07,702 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 00:58:07,703 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 00:58:07,703 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 00:58:07,703 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 00:58:07,710 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:58:07" (1/1) ... [2023-11-12 00:58:07,731 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:58:07" (1/1) ... [2023-11-12 00:58:07,773 INFO L138 Inliner]: procedures = 26, calls = 31, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 119 [2023-11-12 00:58:07,773 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 00:58:07,774 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 00:58:07,774 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 00:58:07,775 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 00:58:07,792 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:58:07" (1/1) ... [2023-11-12 00:58:07,793 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:58:07" (1/1) ... [2023-11-12 00:58:07,795 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:58:07" (1/1) ... [2023-11-12 00:58:07,795 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:58:07" (1/1) ... [2023-11-12 00:58:07,803 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:58:07" (1/1) ... [2023-11-12 00:58:07,806 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:58:07" (1/1) ... [2023-11-12 00:58:07,809 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:58:07" (1/1) ... [2023-11-12 00:58:07,810 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:58:07" (1/1) ... [2023-11-12 00:58:07,814 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 00:58:07,817 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 00:58:07,817 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 00:58:07,817 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 00:58:07,818 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:58:07" (1/1) ... [2023-11-12 00:58:07,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:58:07,853 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdc0b6ca-c58c-4864-b8bc-6f339d9e071e/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:58:07,867 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdc0b6ca-c58c-4864-b8bc-6f339d9e071e/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 00:58:07,897 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdc0b6ca-c58c-4864-b8bc-6f339d9e071e/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 00:58:07,908 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 00:58:07,909 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-12 00:58:07,909 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-12 00:58:07,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 00:58:07,909 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 00:58:07,909 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 00:58:07,994 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 00:58:07,997 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 00:58:08,281 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 00:58:08,506 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 00:58:08,507 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-12 00:58:08,510 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:58:08 BoogieIcfgContainer [2023-11-12 00:58:08,510 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 00:58:08,515 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 00:58:08,515 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 00:58:08,519 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 00:58:08,520 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 12:58:07" (1/3) ... [2023-11-12 00:58:08,521 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46e0b0b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:58:08, skipping insertion in model container [2023-11-12 00:58:08,521 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:58:07" (2/3) ... [2023-11-12 00:58:08,524 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46e0b0b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:58:08, skipping insertion in model container [2023-11-12 00:58:08,524 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:58:08" (3/3) ... [2023-11-12 00:58:08,525 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_normal_file-35.i [2023-11-12 00:58:08,545 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 00:58:08,545 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-12 00:58:08,610 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 00:58:08,619 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=LoopHeads, 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;@6b5fe25a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-12 00:58:08,620 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-12 00:58:08,624 INFO L276 IsEmpty]: Start isEmpty. Operand has 37 states, 16 states have (on average 1.1875) internal successors, (19), 17 states have internal predecessors, (19), 18 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-11-12 00:58:08,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-11-12 00:58:08,638 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:58:08,639 INFO L195 NwaCegarLoop]: trace histogram [18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:58:08,639 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:58:08,647 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:58:08,648 INFO L85 PathProgramCache]: Analyzing trace with hash 961503048, now seen corresponding path program 1 times [2023-11-12 00:58:08,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:58:08,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766737359] [2023-11-12 00:58:08,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:58:08,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:58:09,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 00:58:09,062 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-12 00:58:09,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 00:58:09,274 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-12 00:58:09,276 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-12 00:58:09,291 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-12 00:58:09,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 00:58:09,297 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-12 00:58:09,320 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-11-12 00:58:09,425 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 12:58:09 BoogieIcfgContainer [2023-11-12 00:58:09,426 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-12 00:58:09,426 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-12 00:58:09,426 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-12 00:58:09,427 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-12 00:58:09,427 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:58:08" (3/4) ... [2023-11-12 00:58:09,429 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-12 00:58:09,431 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-12 00:58:09,432 INFO L158 Benchmark]: Toolchain (without parser) took 2059.95ms. Allocated memory was 113.2MB in the beginning and 151.0MB in the end (delta: 37.7MB). Free memory was 69.6MB in the beginning and 115.1MB in the end (delta: -45.5MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 00:58:09,433 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 113.2MB. Free memory was 82.0MB in the beginning and 82.0MB in the end (delta: 26.8kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 00:58:09,433 INFO L158 Benchmark]: CACSL2BoogieTranslator took 325.70ms. Allocated memory is still 113.2MB. Free memory was 69.3MB in the beginning and 56.9MB in the end (delta: 12.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-12 00:58:09,434 INFO L158 Benchmark]: Boogie Procedure Inliner took 70.80ms. Allocated memory was 113.2MB in the beginning and 151.0MB in the end (delta: 37.7MB). Free memory was 56.6MB in the beginning and 121.9MB in the end (delta: -65.3MB). Peak memory consumption was 5.8MB. Max. memory is 16.1GB. [2023-11-12 00:58:09,435 INFO L158 Benchmark]: Boogie Preprocessor took 40.08ms. Allocated memory is still 151.0MB. Free memory was 121.9MB in the beginning and 121.4MB in the end (delta: 536.2kB). Peak memory consumption was 4.7MB. Max. memory is 16.1GB. [2023-11-12 00:58:09,436 INFO L158 Benchmark]: RCFGBuilder took 693.06ms. Allocated memory is still 151.0MB. Free memory was 121.4MB in the beginning and 94.2MB in the end (delta: 27.2MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2023-11-12 00:58:09,436 INFO L158 Benchmark]: TraceAbstraction took 910.54ms. Allocated memory is still 151.0MB. Free memory was 93.9MB in the beginning and 115.1MB in the end (delta: -21.2MB). Peak memory consumption was 38.6MB. Max. memory is 16.1GB. [2023-11-12 00:58:09,437 INFO L158 Benchmark]: Witness Printer took 4.68ms. Allocated memory is still 151.0MB. Free memory is still 115.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 00:58:09,441 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 113.2MB. Free memory was 82.0MB in the beginning and 82.0MB in the end (delta: 26.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 325.70ms. Allocated memory is still 113.2MB. Free memory was 69.3MB in the beginning and 56.9MB in the end (delta: 12.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 70.80ms. Allocated memory was 113.2MB in the beginning and 151.0MB in the end (delta: 37.7MB). Free memory was 56.6MB in the beginning and 121.9MB in the end (delta: -65.3MB). Peak memory consumption was 5.8MB. Max. memory is 16.1GB. * Boogie Preprocessor took 40.08ms. Allocated memory is still 151.0MB. Free memory was 121.9MB in the beginning and 121.4MB in the end (delta: 536.2kB). Peak memory consumption was 4.7MB. Max. memory is 16.1GB. * RCFGBuilder took 693.06ms. Allocated memory is still 151.0MB. Free memory was 121.4MB in the beginning and 94.2MB in the end (delta: 27.2MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * TraceAbstraction took 910.54ms. Allocated memory is still 151.0MB. Free memory was 93.9MB in the beginning and 115.1MB in the end (delta: -21.2MB). Peak memory consumption was 38.6MB. Max. memory is 16.1GB. * Witness Printer took 4.68ms. Allocated memory is still 151.0MB. Free memory is still 115.1MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 19]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 45, overapproximation of someUnaryDOUBLEoperation at line 24, overapproximation of someBinaryArithmeticFLOAToperation at line 43. Possible FailurePath: [L21] unsigned char isInitial = 0; [L22] float var_1_1 = 4.8; [L23] float var_1_4 = 255.1; [L24] float var_1_5 = -0.6; [L25] signed short int var_1_6 = -10; [L26] unsigned char var_1_8 = 1; [L27] signed char var_1_11 = -2; [L28] signed char var_1_12 = 10; [L29] signed char var_1_13 = 5; [L30] signed char var_1_14 = -1; [L31] unsigned char var_1_15 = 1; [L32] unsigned char var_1_16 = 0; [L33] unsigned char var_1_17 = 1; [L34] unsigned char var_1_18 = 5; [L35] unsigned char var_1_19 = 64; [L36] unsigned char var_1_20 = 5; [L37] unsigned char last_1_var_1_18 = 5; [L107] isInitial = 1 [L108] FCALL initially() [L109] COND TRUE 1 [L110] CALL updateLastVariables() [L100] last_1_var_1_18 = var_1_18 [L110] RET updateLastVariables() [L111] CALL updateVariables() [L70] var_1_4 = __VERIFIER_nondet_float() [L71] CALL assume_abort_if_not((var_1_4 >= -461168.6018427382800e+13F && var_1_4 <= -1.0e-20F) || (var_1_4 <= 4611686.018427382800e+12F && var_1_4 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, last_1_var_1_18=5, var_1_11=-2, var_1_12=10, var_1_13=5, var_1_14=-1, var_1_15=1, var_1_16=0, var_1_17=1, var_1_18=5, var_1_19=64, var_1_1=24/5, var_1_20=5, var_1_6=-10, var_1_8=1] [L20] COND FALSE !(!cond) [L71] RET assume_abort_if_not((var_1_4 >= -461168.6018427382800e+13F && var_1_4 <= -1.0e-20F) || (var_1_4 <= 4611686.018427382800e+12F && var_1_4 >= 1.0e-20F )) VAL [isInitial=1, last_1_var_1_18=5, var_1_11=-2, var_1_12=10, var_1_13=5, var_1_14=-1, var_1_15=1, var_1_16=0, var_1_17=1, var_1_18=5, var_1_19=64, var_1_1=24/5, var_1_20=5, var_1_6=-10, var_1_8=1] [L72] var_1_5 = __VERIFIER_nondet_float() [L73] CALL assume_abort_if_not((var_1_5 >= -461168.6018427382800e+13F && var_1_5 <= -1.0e-20F) || (var_1_5 <= 4611686.018427382800e+12F && var_1_5 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, last_1_var_1_18=5, var_1_11=-2, var_1_12=10, var_1_13=5, var_1_14=-1, var_1_15=1, var_1_16=0, var_1_17=1, var_1_18=5, var_1_19=64, var_1_1=24/5, var_1_20=5, var_1_5=517, var_1_6=-10, var_1_8=1] [L20] COND FALSE !(!cond) [L73] RET assume_abort_if_not((var_1_5 >= -461168.6018427382800e+13F && var_1_5 <= -1.0e-20F) || (var_1_5 <= 4611686.018427382800e+12F && var_1_5 >= 1.0e-20F )) VAL [isInitial=1, last_1_var_1_18=5, var_1_11=-2, var_1_12=10, var_1_13=5, var_1_14=-1, var_1_15=1, var_1_16=0, var_1_17=1, var_1_18=5, var_1_19=64, var_1_1=24/5, var_1_20=5, var_1_5=517, var_1_6=-10, var_1_8=1] [L74] var_1_8 = __VERIFIER_nondet_uchar() [L75] CALL assume_abort_if_not(var_1_8 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_18=5, var_1_11=-2, var_1_12=10, var_1_13=5, var_1_14=-1, var_1_15=1, var_1_16=0, var_1_17=1, var_1_18=5, var_1_19=64, var_1_1=24/5, var_1_20=5, var_1_5=517, var_1_6=-10, var_1_8=0] [L20] COND FALSE !(!cond) [L75] RET assume_abort_if_not(var_1_8 >= 0) VAL [isInitial=1, last_1_var_1_18=5, var_1_11=-2, var_1_12=10, var_1_13=5, var_1_14=-1, var_1_15=1, var_1_16=0, var_1_17=1, var_1_18=5, var_1_19=64, var_1_1=24/5, var_1_20=5, var_1_5=517, var_1_6=-10, var_1_8=0] [L76] CALL assume_abort_if_not(var_1_8 <= 1) VAL [\old(cond)=1, isInitial=1, last_1_var_1_18=5, var_1_11=-2, var_1_12=10, var_1_13=5, var_1_14=-1, var_1_15=1, var_1_16=0, var_1_17=1, var_1_18=5, var_1_19=64, var_1_1=24/5, var_1_20=5, var_1_5=517, var_1_6=-10, var_1_8=0] [L20] COND FALSE !(!cond) [L76] RET assume_abort_if_not(var_1_8 <= 1) VAL [isInitial=1, last_1_var_1_18=5, var_1_11=-2, var_1_12=10, var_1_13=5, var_1_14=-1, var_1_15=1, var_1_16=0, var_1_17=1, var_1_18=5, var_1_19=64, var_1_1=24/5, var_1_20=5, var_1_5=517, var_1_6=-10, var_1_8=0] [L77] var_1_12 = __VERIFIER_nondet_char() [L78] CALL assume_abort_if_not(var_1_12 >= -31) VAL [\old(cond)=1, isInitial=1, last_1_var_1_18=5, var_1_11=-2, var_1_12=-31, var_1_13=5, var_1_14=-1, var_1_15=1, var_1_16=0, var_1_17=1, var_1_18=5, var_1_19=64, var_1_1=24/5, var_1_20=5, var_1_5=517, var_1_6=-10, var_1_8=0] [L20] COND FALSE !(!cond) [L78] RET assume_abort_if_not(var_1_12 >= -31) VAL [isInitial=1, last_1_var_1_18=5, var_1_11=-2, var_1_12=-31, var_1_13=5, var_1_14=-1, var_1_15=1, var_1_16=0, var_1_17=1, var_1_18=5, var_1_19=64, var_1_1=24/5, var_1_20=5, var_1_5=517, var_1_6=-10, var_1_8=0] [L79] CALL assume_abort_if_not(var_1_12 <= 32) VAL [\old(cond)=1, isInitial=1, last_1_var_1_18=5, var_1_11=-2, var_1_12=-31, var_1_13=5, var_1_14=-1, var_1_15=1, var_1_16=0, var_1_17=1, var_1_18=5, var_1_19=64, var_1_1=24/5, var_1_20=5, var_1_5=517, var_1_6=-10, var_1_8=0] [L20] COND FALSE !(!cond) [L79] RET assume_abort_if_not(var_1_12 <= 32) VAL [isInitial=1, last_1_var_1_18=5, var_1_11=-2, var_1_12=-31, var_1_13=5, var_1_14=-1, var_1_15=1, var_1_16=0, var_1_17=1, var_1_18=5, var_1_19=64, var_1_1=24/5, var_1_20=5, var_1_5=517, var_1_6=-10, var_1_8=0] [L80] var_1_13 = __VERIFIER_nondet_char() [L81] CALL assume_abort_if_not(var_1_13 >= -31) VAL [\old(cond)=1, isInitial=1, last_1_var_1_18=5, var_1_11=-2, var_1_12=-31, var_1_13=9, var_1_14=-1, var_1_15=1, var_1_16=0, var_1_17=1, var_1_18=5, var_1_19=64, var_1_1=24/5, var_1_20=5, var_1_5=517, var_1_6=-10, var_1_8=0] [L20] COND FALSE !(!cond) [L81] RET assume_abort_if_not(var_1_13 >= -31) VAL [isInitial=1, last_1_var_1_18=5, var_1_11=-2, var_1_12=-31, var_1_13=9, var_1_14=-1, var_1_15=1, var_1_16=0, var_1_17=1, var_1_18=5, var_1_19=64, var_1_1=24/5, var_1_20=5, var_1_5=517, var_1_6=-10, var_1_8=0] [L82] CALL assume_abort_if_not(var_1_13 <= 31) VAL [\old(cond)=1, isInitial=1, last_1_var_1_18=5, var_1_11=-2, var_1_12=-31, var_1_13=9, var_1_14=-1, var_1_15=1, var_1_16=0, var_1_17=1, var_1_18=5, var_1_19=64, var_1_1=24/5, var_1_20=5, var_1_5=517, var_1_6=-10, var_1_8=0] [L20] COND FALSE !(!cond) [L82] RET assume_abort_if_not(var_1_13 <= 31) VAL [isInitial=1, last_1_var_1_18=5, var_1_11=-2, var_1_12=-31, var_1_13=9, var_1_14=-1, var_1_15=1, var_1_16=0, var_1_17=1, var_1_18=5, var_1_19=64, var_1_1=24/5, var_1_20=5, var_1_5=517, var_1_6=-10, var_1_8=0] [L83] var_1_14 = __VERIFIER_nondet_char() [L84] CALL assume_abort_if_not(var_1_14 >= -63) VAL [\old(cond)=1, isInitial=1, last_1_var_1_18=5, var_1_11=-2, var_1_12=-31, var_1_13=9, var_1_14=20, var_1_15=1, var_1_16=0, var_1_17=1, var_1_18=5, var_1_19=64, var_1_1=24/5, var_1_20=5, var_1_5=517, var_1_6=-10, var_1_8=0] [L20] COND FALSE !(!cond) [L84] RET assume_abort_if_not(var_1_14 >= -63) VAL [isInitial=1, last_1_var_1_18=5, var_1_11=-2, var_1_12=-31, var_1_13=9, var_1_14=20, var_1_15=1, var_1_16=0, var_1_17=1, var_1_18=5, var_1_19=64, var_1_1=24/5, var_1_20=5, var_1_5=517, var_1_6=-10, var_1_8=0] [L85] CALL assume_abort_if_not(var_1_14 <= 63) VAL [\old(cond)=1, isInitial=1, last_1_var_1_18=5, var_1_11=-2, var_1_12=-31, var_1_13=9, var_1_14=20, var_1_15=1, var_1_16=0, var_1_17=1, var_1_18=5, var_1_19=64, var_1_1=24/5, var_1_20=5, var_1_5=517, var_1_6=-10, var_1_8=0] [L20] COND FALSE !(!cond) [L85] RET assume_abort_if_not(var_1_14 <= 63) VAL [isInitial=1, last_1_var_1_18=5, var_1_11=-2, var_1_12=-31, var_1_13=9, var_1_14=20, var_1_15=1, var_1_16=0, var_1_17=1, var_1_18=5, var_1_19=64, var_1_1=24/5, var_1_20=5, var_1_5=517, var_1_6=-10, var_1_8=0] [L86] var_1_16 = __VERIFIER_nondet_uchar() [L87] CALL assume_abort_if_not(var_1_16 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_18=5, var_1_11=-2, var_1_12=-31, var_1_13=9, var_1_14=20, var_1_15=1, var_1_16=0, var_1_17=1, var_1_18=5, var_1_19=64, var_1_1=24/5, var_1_20=5, var_1_5=517, var_1_6=-10, var_1_8=0] [L20] COND FALSE !(!cond) [L87] RET assume_abort_if_not(var_1_16 >= 0) VAL [isInitial=1, last_1_var_1_18=5, var_1_11=-2, var_1_12=-31, var_1_13=9, var_1_14=20, var_1_15=1, var_1_16=0, var_1_17=1, var_1_18=5, var_1_19=64, var_1_1=24/5, var_1_20=5, var_1_5=517, var_1_6=-10, var_1_8=0] [L88] CALL assume_abort_if_not(var_1_16 <= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_18=5, var_1_11=-2, var_1_12=-31, var_1_13=9, var_1_14=20, var_1_15=1, var_1_16=0, var_1_17=1, var_1_18=5, var_1_19=64, var_1_1=24/5, var_1_20=5, var_1_5=517, var_1_6=-10, var_1_8=0] [L20] COND FALSE !(!cond) [L88] RET assume_abort_if_not(var_1_16 <= 0) VAL [isInitial=1, last_1_var_1_18=5, var_1_11=-2, var_1_12=-31, var_1_13=9, var_1_14=20, var_1_15=1, var_1_16=0, var_1_17=1, var_1_18=5, var_1_19=64, var_1_1=24/5, var_1_20=5, var_1_5=517, var_1_6=-10, var_1_8=0] [L89] var_1_17 = __VERIFIER_nondet_uchar() [L90] CALL assume_abort_if_not(var_1_17 >= 1) VAL [\old(cond)=1, isInitial=1, last_1_var_1_18=5, var_1_11=-2, var_1_12=-31, var_1_13=9, var_1_14=20, var_1_15=1, var_1_16=0, var_1_17=1, var_1_18=5, var_1_19=64, var_1_1=24/5, var_1_20=5, var_1_5=517, var_1_6=-10, var_1_8=0] [L20] COND FALSE !(!cond) [L90] RET assume_abort_if_not(var_1_17 >= 1) VAL [isInitial=1, last_1_var_1_18=5, var_1_11=-2, var_1_12=-31, var_1_13=9, var_1_14=20, var_1_15=1, var_1_16=0, var_1_17=1, var_1_18=5, var_1_19=64, var_1_1=24/5, var_1_20=5, var_1_5=517, var_1_6=-10, var_1_8=0] [L91] CALL assume_abort_if_not(var_1_17 <= 1) VAL [\old(cond)=1, isInitial=1, last_1_var_1_18=5, var_1_11=-2, var_1_12=-31, var_1_13=9, var_1_14=20, var_1_15=1, var_1_16=0, var_1_17=1, var_1_18=5, var_1_19=64, var_1_1=24/5, var_1_20=5, var_1_5=517, var_1_6=-10, var_1_8=0] [L20] COND FALSE !(!cond) [L91] RET assume_abort_if_not(var_1_17 <= 1) VAL [isInitial=1, last_1_var_1_18=5, var_1_11=-2, var_1_12=-31, var_1_13=9, var_1_14=20, var_1_15=1, var_1_16=0, var_1_17=1, var_1_18=5, var_1_19=64, var_1_1=24/5, var_1_20=5, var_1_5=517, var_1_6=-10, var_1_8=0] [L92] var_1_19 = __VERIFIER_nondet_uchar() [L93] CALL assume_abort_if_not(var_1_19 >= 32) VAL [\old(cond)=1, isInitial=1, last_1_var_1_18=5, var_1_11=-2, var_1_12=-31, var_1_13=9, var_1_14=20, var_1_15=1, var_1_16=0, var_1_17=1, var_1_18=5, var_1_19=64, var_1_1=24/5, var_1_20=5, var_1_5=517, var_1_6=-10, var_1_8=0] [L20] COND FALSE !(!cond) [L93] RET assume_abort_if_not(var_1_19 >= 32) VAL [isInitial=1, last_1_var_1_18=5, var_1_11=-2, var_1_12=-31, var_1_13=9, var_1_14=20, var_1_15=1, var_1_16=0, var_1_17=1, var_1_18=5, var_1_19=64, var_1_1=24/5, var_1_20=5, var_1_5=517, var_1_6=-10, var_1_8=0] [L94] CALL assume_abort_if_not(var_1_19 <= 64) VAL [\old(cond)=1, isInitial=1, last_1_var_1_18=5, var_1_11=-2, var_1_12=-31, var_1_13=9, var_1_14=20, var_1_15=1, var_1_16=0, var_1_17=1, var_1_18=5, var_1_19=64, var_1_1=24/5, var_1_20=5, var_1_5=517, var_1_6=-10, var_1_8=0] [L20] COND FALSE !(!cond) [L94] RET assume_abort_if_not(var_1_19 <= 64) VAL [isInitial=1, last_1_var_1_18=5, var_1_11=-2, var_1_12=-31, var_1_13=9, var_1_14=20, var_1_15=1, var_1_16=0, var_1_17=1, var_1_18=5, var_1_19=64, var_1_1=24/5, var_1_20=5, var_1_5=517, var_1_6=-10, var_1_8=0] [L95] var_1_20 = __VERIFIER_nondet_uchar() [L96] CALL assume_abort_if_not(var_1_20 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_18=5, var_1_11=-2, var_1_12=-31, var_1_13=9, var_1_14=20, var_1_15=1, var_1_16=0, var_1_17=1, var_1_18=5, var_1_19=64, var_1_1=24/5, var_1_20=32, var_1_5=517, var_1_6=-10, var_1_8=0] [L20] COND FALSE !(!cond) [L96] RET assume_abort_if_not(var_1_20 >= 0) VAL [isInitial=1, last_1_var_1_18=5, var_1_11=-2, var_1_12=-31, var_1_13=9, var_1_14=20, var_1_15=1, var_1_16=0, var_1_17=1, var_1_18=5, var_1_19=64, var_1_1=24/5, var_1_20=32, var_1_5=517, var_1_6=-10, var_1_8=0] [L97] CALL assume_abort_if_not(var_1_20 <= 32) VAL [\old(cond)=1, isInitial=1, last_1_var_1_18=5, var_1_11=-2, var_1_12=-31, var_1_13=9, var_1_14=20, var_1_15=1, var_1_16=0, var_1_17=1, var_1_18=5, var_1_19=64, var_1_1=24/5, var_1_20=32, var_1_5=517, var_1_6=-10, var_1_8=0] [L20] COND FALSE !(!cond) [L97] RET assume_abort_if_not(var_1_20 <= 32) VAL [isInitial=1, last_1_var_1_18=5, var_1_11=-2, var_1_12=-31, var_1_13=9, var_1_14=20, var_1_15=1, var_1_16=0, var_1_17=1, var_1_18=5, var_1_19=64, var_1_1=24/5, var_1_20=32, var_1_5=517, var_1_6=-10, var_1_8=0] [L111] RET updateVariables() [L112] CALL step() [L41] signed long int stepLocal_0 = ~ last_1_var_1_18; [L42] COND TRUE last_1_var_1_18 >= stepLocal_0 [L43] var_1_1 = (var_1_4 + var_1_5) [L45] unsigned char stepLocal_1 = (var_1_1 * var_1_5) >= var_1_4; [L46] COND TRUE var_1_17 && stepLocal_1 [L47] var_1_18 = (2 + ((var_1_19 - var_1_20) + 32)) [L51] COND FALSE !(\read(var_1_8)) [L54] var_1_15 = (! var_1_17) [L56] COND FALSE !(\read(var_1_15)) [L59] COND FALSE !(\read(var_1_15)) [L66] var_1_6 = var_1_11 [L112] RET step() [L113] CALL, EXPR property() [L103-L104] return (((((last_1_var_1_18 >= (~ last_1_var_1_18)) ? (var_1_1 == ((float) (var_1_4 + var_1_5))) : 1) && (var_1_15 ? (var_1_15 ? (var_1_6 == ((signed short int) (var_1_11 + var_1_11))) : (var_1_6 == ((signed short int) (var_1_11 + var_1_11)))) : (var_1_6 == ((signed short int) var_1_11)))) && (var_1_15 ? (var_1_11 == ((signed char) ((var_1_12 + ((((10) < (var_1_13)) ? (10) : (var_1_13)))) + var_1_14))) : 1)) && (var_1_8 ? (var_1_15 == ((unsigned char) (! var_1_16))) : (var_1_15 == ((unsigned char) (! var_1_17))))) && ((var_1_17 && ((var_1_1 * var_1_5) >= var_1_4)) ? (var_1_18 == ((unsigned char) (2 + ((var_1_19 - var_1_20) + 32)))) : (var_1_18 == ((unsigned char) var_1_19))) ; [L113] RET, EXPR property() [L113] CALL __VERIFIER_assert(property()) [L19] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, isInitial=1, last_1_var_1_18=5, var_1_11=-2, var_1_12=-31, var_1_13=9, var_1_14=20, var_1_15=0, var_1_16=0, var_1_17=1, var_1_18=66, var_1_19=64, var_1_20=32, var_1_5=517, var_1_6=-2, var_1_8=0] [L19] reach_error() VAL [\old(cond)=0, cond=0, isInitial=1, last_1_var_1_18=5, var_1_11=-2, var_1_12=-31, var_1_13=9, var_1_14=20, var_1_15=0, var_1_16=0, var_1_17=1, var_1_18=66, var_1_19=64, var_1_20=32, var_1_5=517, var_1_6=-2, var_1_8=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 37 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.7s, OverallIterations: 1, TraceHistogramMax: 18, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 68 NumberOfCodeBlocks, 68 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-12 00:58:09,474 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdc0b6ca-c58c-4864-b8bc-6f339d9e071e/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdc0b6ca-c58c-4864-b8bc-6f339d9e071e/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdc0b6ca-c58c-4864-b8bc-6f339d9e071e/bin/utaipan-verify-NcY6lQBIFX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdc0b6ca-c58c-4864-b8bc-6f339d9e071e/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdc0b6ca-c58c-4864-b8bc-6f339d9e071e/bin/utaipan-verify-NcY6lQBIFX/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_normal_file-35.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdc0b6ca-c58c-4864-b8bc-6f339d9e071e/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdc0b6ca-c58c-4864-b8bc-6f339d9e071e/bin/utaipan-verify-NcY6lQBIFX --witnessprinter.witness.filename witness --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 7ec09e5648980bc5a4329f49d7e2504b195b194638f2d82967f3c7db0031611d --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 00:58:12,133 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 00:58:12,243 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdc0b6ca-c58c-4864-b8bc-6f339d9e071e/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2023-11-12 00:58:12,250 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 00:58:12,251 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 00:58:12,277 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 00:58:12,278 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 00:58:12,279 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 00:58:12,280 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 00:58:12,281 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 00:58:12,281 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 00:58:12,282 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 00:58:12,283 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 00:58:12,283 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 00:58:12,284 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 00:58:12,285 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 00:58:12,286 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 00:58:12,287 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 00:58:12,287 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 00:58:12,288 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 00:58:12,289 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 00:58:12,289 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 00:58:12,290 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 00:58:12,290 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 00:58:12,291 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-12 00:58:12,291 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-12 00:58:12,292 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-12 00:58:12,293 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 00:58:12,293 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 00:58:12,294 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 00:58:12,294 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 00:58:12,294 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 00:58:12,295 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 00:58:12,295 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:58:12,296 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 00:58:12,296 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 00:58:12,296 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 00:58:12,297 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-12 00:58:12,297 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-12 00:58:12,297 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 00:58:12,298 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 00:58:12,298 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 00:58:12,298 INFO L153 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_bdc0b6ca-c58c-4864-b8bc-6f339d9e071e/bin/utaipan-verify-NcY6lQBIFX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdc0b6ca-c58c-4864-b8bc-6f339d9e071e/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7ec09e5648980bc5a4329f49d7e2504b195b194638f2d82967f3c7db0031611d [2023-11-12 00:58:12,672 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 00:58:12,702 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 00:58:12,707 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 00:58:12,708 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 00:58:12,708 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 00:58:12,710 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdc0b6ca-c58c-4864-b8bc-6f339d9e071e/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_normal_file-35.i [2023-11-12 00:58:15,863 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 00:58:16,160 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 00:58:16,160 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdc0b6ca-c58c-4864-b8bc-6f339d9e071e/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_normal_file-35.i [2023-11-12 00:58:16,169 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdc0b6ca-c58c-4864-b8bc-6f339d9e071e/bin/utaipan-verify-NcY6lQBIFX/data/7ba899bc5/2b44ef54f7784664b24eef1c41c2ae36/FLAG1c3de4b92 [2023-11-12 00:58:16,185 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdc0b6ca-c58c-4864-b8bc-6f339d9e071e/bin/utaipan-verify-NcY6lQBIFX/data/7ba899bc5/2b44ef54f7784664b24eef1c41c2ae36 [2023-11-12 00:58:16,187 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 00:58:16,189 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 00:58:16,190 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 00:58:16,191 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 00:58:16,195 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 00:58:16,196 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:58:16" (1/1) ... [2023-11-12 00:58:16,197 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1937fc82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:58:16, skipping insertion in model container [2023-11-12 00:58:16,197 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:58:16" (1/1) ... [2023-11-12 00:58:16,227 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 00:58:16,431 WARN L240 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_bdc0b6ca-c58c-4864-b8bc-6f339d9e071e/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_normal_file-35.i[913,926] [2023-11-12 00:58:16,497 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:58:16,527 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 00:58:16,545 WARN L240 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_bdc0b6ca-c58c-4864-b8bc-6f339d9e071e/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_normal_file-35.i[913,926] [2023-11-12 00:58:16,588 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:58:16,614 INFO L206 MainTranslator]: Completed translation [2023-11-12 00:58:16,615 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:58:16 WrapperNode [2023-11-12 00:58:16,615 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 00:58:16,616 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 00:58:16,617 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 00:58:16,617 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 00:58:16,624 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:58:16" (1/1) ... [2023-11-12 00:58:16,649 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:58:16" (1/1) ... [2023-11-12 00:58:16,694 INFO L138 Inliner]: procedures = 27, calls = 31, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 116 [2023-11-12 00:58:16,697 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 00:58:16,698 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 00:58:16,698 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 00:58:16,699 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 00:58:16,708 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:58:16" (1/1) ... [2023-11-12 00:58:16,708 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:58:16" (1/1) ... [2023-11-12 00:58:16,730 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:58:16" (1/1) ... [2023-11-12 00:58:16,731 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:58:16" (1/1) ... [2023-11-12 00:58:16,741 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:58:16" (1/1) ... [2023-11-12 00:58:16,757 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:58:16" (1/1) ... [2023-11-12 00:58:16,765 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:58:16" (1/1) ... [2023-11-12 00:58:16,776 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:58:16" (1/1) ... [2023-11-12 00:58:16,779 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 00:58:16,780 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 00:58:16,780 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 00:58:16,781 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 00:58:16,781 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:58:16" (1/1) ... [2023-11-12 00:58:16,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:58:16,802 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdc0b6ca-c58c-4864-b8bc-6f339d9e071e/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:58:16,819 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdc0b6ca-c58c-4864-b8bc-6f339d9e071e/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 00:58:16,854 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdc0b6ca-c58c-4864-b8bc-6f339d9e071e/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 00:58:16,871 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 00:58:16,871 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-12 00:58:16,872 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-12 00:58:16,872 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-12 00:58:16,872 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 00:58:16,872 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 00:58:17,025 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 00:58:17,043 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 00:58:18,218 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 00:58:18,229 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 00:58:18,230 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-12 00:58:18,233 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:58:18 BoogieIcfgContainer [2023-11-12 00:58:18,233 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 00:58:18,236 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 00:58:18,237 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 00:58:18,241 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 00:58:18,241 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 12:58:16" (1/3) ... [2023-11-12 00:58:18,242 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2938d584 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:58:18, skipping insertion in model container [2023-11-12 00:58:18,242 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:58:16" (2/3) ... [2023-11-12 00:58:18,244 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2938d584 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:58:18, skipping insertion in model container [2023-11-12 00:58:18,245 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:58:18" (3/3) ... [2023-11-12 00:58:18,246 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_normal_file-35.i [2023-11-12 00:58:18,265 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 00:58:18,266 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-12 00:58:18,314 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 00:58:18,321 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=LoopHeads, 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;@2437cd55, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-12 00:58:18,321 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-12 00:58:18,330 INFO L276 IsEmpty]: Start isEmpty. Operand has 54 states, 33 states have (on average 1.3333333333333333) internal successors, (44), 34 states have internal predecessors, (44), 18 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-11-12 00:58:18,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-11-12 00:58:18,345 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:58:18,346 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:58:18,347 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:58:18,352 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:58:18,353 INFO L85 PathProgramCache]: Analyzing trace with hash -232387294, now seen corresponding path program 1 times [2023-11-12 00:58:18,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 00:58:18,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1929262718] [2023-11-12 00:58:18,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:58:18,368 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 [2023-11-12 00:58:18,368 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdc0b6ca-c58c-4864-b8bc-6f339d9e071e/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 00:58:18,374 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdc0b6ca-c58c-4864-b8bc-6f339d9e071e/bin/utaipan-verify-NcY6lQBIFX/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) [2023-11-12 00:58:18,378 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdc0b6ca-c58c-4864-b8bc-6f339d9e071e/bin/utaipan-verify-NcY6lQBIFX/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 [2023-11-12 00:58:18,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:58:18,735 INFO L262 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-12 00:58:18,748 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:58:18,800 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 242 proven. 0 refuted. 0 times theorem prover too weak. 370 trivial. 0 not checked. [2023-11-12 00:58:18,800 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:58:18,801 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-12 00:58:18,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1929262718] [2023-11-12 00:58:18,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1929262718] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:58:18,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:58:18,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 00:58:18,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986961894] [2023-11-12 00:58:18,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:58:18,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-12 00:58:18,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-12 00:58:18,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-12 00:58:18,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 00:58:18,845 INFO L87 Difference]: Start difference. First operand has 54 states, 33 states have (on average 1.3333333333333333) internal successors, (44), 34 states have internal predecessors, (44), 18 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) Second operand has 2 states, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-11-12 00:58:18,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:58:18,878 INFO L93 Difference]: Finished difference Result 101 states and 172 transitions. [2023-11-12 00:58:18,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-12 00:58:18,883 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 115 [2023-11-12 00:58:18,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:58:18,892 INFO L225 Difference]: With dead ends: 101 [2023-11-12 00:58:18,893 INFO L226 Difference]: Without dead ends: 50 [2023-11-12 00:58:18,898 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 00:58:18,904 INFO L413 NwaCegarLoop]: 73 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, 73 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 [2023-11-12 00:58:18,905 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 00:58:18,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2023-11-12 00:58:18,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2023-11-12 00:58:18,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 30 states have (on average 1.2333333333333334) internal successors, (37), 30 states have internal predecessors, (37), 18 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-11-12 00:58:18,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 73 transitions. [2023-11-12 00:58:18,958 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 73 transitions. Word has length 115 [2023-11-12 00:58:18,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:58:18,959 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 73 transitions. [2023-11-12 00:58:18,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-11-12 00:58:18,960 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 73 transitions. [2023-11-12 00:58:18,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-11-12 00:58:18,964 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:58:18,964 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:58:18,984 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdc0b6ca-c58c-4864-b8bc-6f339d9e071e/bin/utaipan-verify-NcY6lQBIFX/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)] Ended with exit code 0 [2023-11-12 00:58:19,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdc0b6ca-c58c-4864-b8bc-6f339d9e071e/bin/utaipan-verify-NcY6lQBIFX/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 [2023-11-12 00:58:19,174 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:58:19,175 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:58:19,175 INFO L85 PathProgramCache]: Analyzing trace with hash 1342920990, now seen corresponding path program 1 times [2023-11-12 00:58:19,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 00:58:19,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2137042540] [2023-11-12 00:58:19,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:58:19,176 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 [2023-11-12 00:58:19,177 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdc0b6ca-c58c-4864-b8bc-6f339d9e071e/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 00:58:19,178 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdc0b6ca-c58c-4864-b8bc-6f339d9e071e/bin/utaipan-verify-NcY6lQBIFX/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) [2023-11-12 00:58:19,179 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdc0b6ca-c58c-4864-b8bc-6f339d9e071e/bin/utaipan-verify-NcY6lQBIFX/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 [2023-11-12 00:58:19,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:58:19,558 INFO L262 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-12 00:58:19,565 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:58:19,634 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-11-12 00:58:19,635 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:58:19,635 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-12 00:58:19,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2137042540] [2023-11-12 00:58:19,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2137042540] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:58:19,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:58:19,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 00:58:19,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099476743] [2023-11-12 00:58:19,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:58:19,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:58:19,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-12 00:58:19,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:58:19,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:58:19,640 INFO L87 Difference]: Start difference. First operand 50 states and 73 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-11-12 00:58:20,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:58:20,196 INFO L93 Difference]: Finished difference Result 97 states and 143 transitions. [2023-11-12 00:58:20,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:58:20,207 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 115 [2023-11-12 00:58:20,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:58:20,210 INFO L225 Difference]: With dead ends: 97 [2023-11-12 00:58:20,210 INFO L226 Difference]: Without dead ends: 50 [2023-11-12 00:58:20,211 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:58:20,212 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 12 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-12 00:58:20,213 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 126 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-12 00:58:20,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2023-11-12 00:58:20,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2023-11-12 00:58:20,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 30 states have (on average 1.2) internal successors, (36), 30 states have internal predecessors, (36), 18 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-11-12 00:58:20,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 72 transitions. [2023-11-12 00:58:20,226 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 72 transitions. Word has length 115 [2023-11-12 00:58:20,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:58:20,228 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 72 transitions. [2023-11-12 00:58:20,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-11-12 00:58:20,229 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 72 transitions. [2023-11-12 00:58:20,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-11-12 00:58:20,231 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:58:20,232 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:58:20,254 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdc0b6ca-c58c-4864-b8bc-6f339d9e071e/bin/utaipan-verify-NcY6lQBIFX/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 [2023-11-12 00:58:20,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdc0b6ca-c58c-4864-b8bc-6f339d9e071e/bin/utaipan-verify-NcY6lQBIFX/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 [2023-11-12 00:58:20,454 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:58:20,455 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:58:20,455 INFO L85 PathProgramCache]: Analyzing trace with hash 1735948000, now seen corresponding path program 1 times [2023-11-12 00:58:20,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 00:58:20,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2087474381] [2023-11-12 00:58:20,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:58:20,456 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 [2023-11-12 00:58:20,456 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdc0b6ca-c58c-4864-b8bc-6f339d9e071e/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 00:58:20,457 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdc0b6ca-c58c-4864-b8bc-6f339d9e071e/bin/utaipan-verify-NcY6lQBIFX/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) [2023-11-12 00:58:20,459 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdc0b6ca-c58c-4864-b8bc-6f339d9e071e/bin/utaipan-verify-NcY6lQBIFX/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 [2023-11-12 00:58:20,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:58:20,835 INFO L262 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-12 00:58:20,841 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:58:21,116 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 303 proven. 18 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2023-11-12 00:58:21,116 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 00:58:21,419 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 33 proven. 18 refuted. 0 times theorem prover too weak. 561 trivial. 0 not checked. [2023-11-12 00:58:21,420 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-12 00:58:21,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2087474381] [2023-11-12 00:58:21,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2087474381] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 00:58:21,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1024032246] [2023-11-12 00:58:21,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:58:21,431 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-12 00:58:21,431 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdc0b6ca-c58c-4864-b8bc-6f339d9e071e/bin/utaipan-verify-NcY6lQBIFX/cvc4 [2023-11-12 00:58:21,435 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdc0b6ca-c58c-4864-b8bc-6f339d9e071e/bin/utaipan-verify-NcY6lQBIFX/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-12 00:58:21,454 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdc0b6ca-c58c-4864-b8bc-6f339d9e071e/bin/utaipan-verify-NcY6lQBIFX/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2023-11-12 00:58:21,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:58:21,798 INFO L262 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-12 00:58:21,803 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:58:21,816 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-11-12 00:58:21,817 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:58:21,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1024032246] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:58:21,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-12 00:58:21,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6, 6] total 9 [2023-11-12 00:58:21,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17701728] [2023-11-12 00:58:21,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:58:21,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:58:21,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-12 00:58:21,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:58:21,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-12 00:58:21,820 INFO L87 Difference]: Start difference. First operand 50 states and 72 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-11-12 00:58:22,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:58:22,336 INFO L93 Difference]: Finished difference Result 142 states and 206 transitions. [2023-11-12 00:58:22,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:58:22,347 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 115 [2023-11-12 00:58:22,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:58:22,351 INFO L225 Difference]: With dead ends: 142 [2023-11-12 00:58:22,351 INFO L226 Difference]: Without dead ends: 95 [2023-11-12 00:58:22,352 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 334 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-12 00:58:22,353 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 65 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-12 00:58:22,354 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 134 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-12 00:58:22,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2023-11-12 00:58:22,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 51. [2023-11-12 00:58:22,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 31 states have (on average 1.1612903225806452) internal successors, (36), 31 states have internal predecessors, (36), 18 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-11-12 00:58:22,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 72 transitions. [2023-11-12 00:58:22,378 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 72 transitions. Word has length 115 [2023-11-12 00:58:22,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:58:22,379 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 72 transitions. [2023-11-12 00:58:22,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-11-12 00:58:22,380 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 72 transitions. [2023-11-12 00:58:22,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-11-12 00:58:22,385 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:58:22,385 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:58:22,408 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdc0b6ca-c58c-4864-b8bc-6f339d9e071e/bin/utaipan-verify-NcY6lQBIFX/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 [2023-11-12 00:58:22,605 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdc0b6ca-c58c-4864-b8bc-6f339d9e071e/bin/utaipan-verify-NcY6lQBIFX/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2023-11-12 00:58:22,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdc0b6ca-c58c-4864-b8bc-6f339d9e071e/bin/utaipan-verify-NcY6lQBIFX/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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdc0b6ca-c58c-4864-b8bc-6f339d9e071e/bin/utaipan-verify-NcY6lQBIFX/cvc4 --incremental --print-success --lang smt [2023-11-12 00:58:22,802 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:58:22,803 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:58:22,803 INFO L85 PathProgramCache]: Analyzing trace with hash 1793206302, now seen corresponding path program 1 times [2023-11-12 00:58:22,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 00:58:22,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1146418996] [2023-11-12 00:58:22,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:58:22,804 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 [2023-11-12 00:58:22,805 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdc0b6ca-c58c-4864-b8bc-6f339d9e071e/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 00:58:22,806 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdc0b6ca-c58c-4864-b8bc-6f339d9e071e/bin/utaipan-verify-NcY6lQBIFX/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) [2023-11-12 00:58:22,811 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdc0b6ca-c58c-4864-b8bc-6f339d9e071e/bin/utaipan-verify-NcY6lQBIFX/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 [2023-11-12 00:58:23,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:58:23,167 INFO L262 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-12 00:58:23,171 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:58:23,384 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 303 proven. 18 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2023-11-12 00:58:23,385 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 00:58:23,676 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 33 proven. 18 refuted. 0 times theorem prover too weak. 561 trivial. 0 not checked. [2023-11-12 00:58:23,676 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-12 00:58:23,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1146418996] [2023-11-12 00:58:23,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1146418996] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 00:58:23,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1918919574] [2023-11-12 00:58:23,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:58:23,678 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-12 00:58:23,678 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdc0b6ca-c58c-4864-b8bc-6f339d9e071e/bin/utaipan-verify-NcY6lQBIFX/cvc4 [2023-11-12 00:58:23,679 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdc0b6ca-c58c-4864-b8bc-6f339d9e071e/bin/utaipan-verify-NcY6lQBIFX/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-12 00:58:23,702 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdc0b6ca-c58c-4864-b8bc-6f339d9e071e/bin/utaipan-verify-NcY6lQBIFX/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2023-11-12 00:58:24,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:58:24,389 INFO L262 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-12 00:58:24,393 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:58:24,573 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 303 proven. 18 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2023-11-12 00:58:24,574 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 00:58:24,727 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 33 proven. 18 refuted. 0 times theorem prover too weak. 561 trivial. 0 not checked. [2023-11-12 00:58:24,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1918919574] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 00:58:24,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [387444189] [2023-11-12 00:58:24,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:58:24,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:58:24,729 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdc0b6ca-c58c-4864-b8bc-6f339d9e071e/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:58:24,732 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdc0b6ca-c58c-4864-b8bc-6f339d9e071e/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:58:24,762 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdc0b6ca-c58c-4864-b8bc-6f339d9e071e/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-12 00:58:24,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:58:24,921 INFO L262 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-12 00:58:24,926 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:58:25,272 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 303 proven. 18 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2023-11-12 00:58:25,272 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 00:58:25,557 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 33 proven. 18 refuted. 0 times theorem prover too weak. 561 trivial. 0 not checked. [2023-11-12 00:58:25,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [387444189] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 00:58:25,557 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-11-12 00:58:25,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 7, 7] total 11 [2023-11-12 00:58:25,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215853718] [2023-11-12 00:58:25,559 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-11-12 00:58:25,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-12 00:58:25,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-12 00:58:25,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-12 00:58:25,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2023-11-12 00:58:25,570 INFO L87 Difference]: Start difference. First operand 51 states and 72 transitions. Second operand has 11 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 11 states have internal predecessors, (47), 2 states have call successors, (24), 2 states have call predecessors, (24), 4 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2023-11-12 00:58:27,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:58:27,332 INFO L93 Difference]: Finished difference Result 214 states and 292 transitions. [2023-11-12 00:58:27,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-11-12 00:58:27,334 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 11 states have internal predecessors, (47), 2 states have call successors, (24), 2 states have call predecessors, (24), 4 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 115 [2023-11-12 00:58:27,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:58:27,337 INFO L225 Difference]: With dead ends: 214 [2023-11-12 00:58:27,337 INFO L226 Difference]: Without dead ends: 166 [2023-11-12 00:58:27,338 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 706 GetRequests, 674 SyntacticMatches, 3 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 213 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=247, Invalid=683, Unknown=0, NotChecked=0, Total=930 [2023-11-12 00:58:27,340 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 186 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-12 00:58:27,340 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [200 Valid, 196 Invalid, 377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-12 00:58:27,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2023-11-12 00:58:27,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 56. [2023-11-12 00:58:27,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 35 states have (on average 1.1428571428571428) internal successors, (40), 35 states have internal predecessors, (40), 18 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-11-12 00:58:27,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 76 transitions. [2023-11-12 00:58:27,378 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 76 transitions. Word has length 115 [2023-11-12 00:58:27,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:58:27,379 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 76 transitions. [2023-11-12 00:58:27,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 11 states have internal predecessors, (47), 2 states have call successors, (24), 2 states have call predecessors, (24), 4 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2023-11-12 00:58:27,379 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 76 transitions. [2023-11-12 00:58:27,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-11-12 00:58:27,382 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:58:27,382 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:58:27,399 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdc0b6ca-c58c-4864-b8bc-6f339d9e071e/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-12 00:58:27,597 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdc0b6ca-c58c-4864-b8bc-6f339d9e071e/bin/utaipan-verify-NcY6lQBIFX/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2023-11-12 00:58:27,805 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdc0b6ca-c58c-4864-b8bc-6f339d9e071e/bin/utaipan-verify-NcY6lQBIFX/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 [2023-11-12 00:58:27,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdc0b6ca-c58c-4864-b8bc-6f339d9e071e/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdc0b6ca-c58c-4864-b8bc-6f339d9e071e/bin/utaipan-verify-NcY6lQBIFX/cvc4 --incremental --print-success --lang smt,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdc0b6ca-c58c-4864-b8bc-6f339d9e071e/bin/utaipan-verify-NcY6lQBIFX/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 [2023-11-12 00:58:27,994 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:58:27,994 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:58:27,995 INFO L85 PathProgramCache]: Analyzing trace with hash -726753632, now seen corresponding path program 1 times [2023-11-12 00:58:27,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 00:58:27,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [557879142] [2023-11-12 00:58:27,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:58:27,996 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 [2023-11-12 00:58:27,996 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdc0b6ca-c58c-4864-b8bc-6f339d9e071e/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 00:58:27,997 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdc0b6ca-c58c-4864-b8bc-6f339d9e071e/bin/utaipan-verify-NcY6lQBIFX/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) [2023-11-12 00:58:28,001 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdc0b6ca-c58c-4864-b8bc-6f339d9e071e/bin/utaipan-verify-NcY6lQBIFX/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 [2023-11-12 00:58:28,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:58:28,307 INFO L262 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-12 00:58:28,312 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:59:04,575 WARN L293 SmtUtils]: Spent 7.19s on a formula simplification that was a NOOP. DAG size: 25 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)