./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.v_Unidec.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 527bcce2 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_48af564f-ee5c-4415-a8f5-73390088a44b/bin/utaipan-verify-QoSU8krkJ5/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48af564f-ee5c-4415-a8f5-73390088a44b/bin/utaipan-verify-QoSU8krkJ5/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48af564f-ee5c-4415-a8f5-73390088a44b/bin/utaipan-verify-QoSU8krkJ5/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48af564f-ee5c-4415-a8f5-73390088a44b/bin/utaipan-verify-QoSU8krkJ5/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.v_Unidec.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48af564f-ee5c-4415-a8f5-73390088a44b/bin/utaipan-verify-QoSU8krkJ5/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48af564f-ee5c-4415-a8f5-73390088a44b/bin/utaipan-verify-QoSU8krkJ5 --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 64bit --witnessprinter.graph.data.programhash c14eea1490451e84235fd4f93f05fdff3c411b2c5f93e6c8c24af5ce00f88831 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 19:50:43,561 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 19:50:43,682 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48af564f-ee5c-4415-a8f5-73390088a44b/bin/utaipan-verify-QoSU8krkJ5/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-21 19:50:43,692 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 19:50:43,693 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 19:50:43,735 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 19:50:43,735 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 19:50:43,736 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 19:50:43,737 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 19:50:43,742 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 19:50:43,743 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-21 19:50:43,744 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-21 19:50:43,745 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-21 19:50:43,746 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-21 19:50:43,747 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-21 19:50:43,747 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-21 19:50:43,748 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-21 19:50:43,748 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-21 19:50:43,748 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-21 19:50:43,749 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-21 19:50:43,749 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-21 19:50:43,750 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-21 19:50:43,752 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 19:50:43,753 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 19:50:43,753 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 19:50:43,754 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 19:50:43,754 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 19:50:43,754 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 19:50:43,755 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 19:50:43,755 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 19:50:43,757 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 19:50:43,757 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 19:50:43,757 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 19:50:43,757 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 19:50:43,758 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 19:50:43,758 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 19:50:43,758 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 19:50:43,758 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 19:50:43,759 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-21 19:50:43,759 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 19:50:43,759 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 19:50:43,760 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 19:50:43,760 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-21 19:50:43,760 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 19:50:43,761 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_48af564f-ee5c-4415-a8f5-73390088a44b/bin/utaipan-verify-QoSU8krkJ5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48af564f-ee5c-4415-a8f5-73390088a44b/bin/utaipan-verify-QoSU8krkJ5 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c14eea1490451e84235fd4f93f05fdff3c411b2c5f93e6c8c24af5ce00f88831 [2023-11-21 19:50:44,025 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 19:50:44,049 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 19:50:44,052 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 19:50:44,053 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 19:50:44,053 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 19:50:44,055 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48af564f-ee5c-4415-a8f5-73390088a44b/bin/utaipan-verify-QoSU8krkJ5/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.v_Unidec.c [2023-11-21 19:50:47,235 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 19:50:47,496 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 19:50:47,497 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48af564f-ee5c-4415-a8f5-73390088a44b/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.v_Unidec.c [2023-11-21 19:50:47,512 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48af564f-ee5c-4415-a8f5-73390088a44b/bin/utaipan-verify-QoSU8krkJ5/data/4f32079bf/f06243f27fd14f95a3b3c990d9bc0807/FLAGe73cbddb5 [2023-11-21 19:50:47,530 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48af564f-ee5c-4415-a8f5-73390088a44b/bin/utaipan-verify-QoSU8krkJ5/data/4f32079bf/f06243f27fd14f95a3b3c990d9bc0807 [2023-11-21 19:50:47,536 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 19:50:47,537 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 19:50:47,541 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 19:50:47,541 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 19:50:47,547 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 19:50:47,548 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 07:50:47" (1/1) ... [2023-11-21 19:50:47,549 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@407034f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:50:47, skipping insertion in model container [2023-11-21 19:50:47,549 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 07:50:47" (1/1) ... [2023-11-21 19:50:47,614 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 19:50:47,799 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_48af564f-ee5c-4415-a8f5-73390088a44b/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.v_Unidec.c[1248,1261] [2023-11-21 19:50:48,084 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 19:50:48,094 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 19:50:48,107 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_48af564f-ee5c-4415-a8f5-73390088a44b/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.v_Unidec.c[1248,1261] [2023-11-21 19:50:48,256 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 19:50:48,271 INFO L206 MainTranslator]: Completed translation [2023-11-21 19:50:48,271 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:50:48 WrapperNode [2023-11-21 19:50:48,271 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 19:50:48,273 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 19:50:48,273 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 19:50:48,273 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 19:50:48,281 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:50:48" (1/1) ... [2023-11-21 19:50:48,351 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:50:48" (1/1) ... [2023-11-21 19:50:48,567 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1360 [2023-11-21 19:50:48,567 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 19:50:48,568 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 19:50:48,568 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 19:50:48,568 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 19:50:48,587 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:50:48" (1/1) ... [2023-11-21 19:50:48,587 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:50:48" (1/1) ... [2023-11-21 19:50:48,616 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:50:48" (1/1) ... [2023-11-21 19:50:48,616 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:50:48" (1/1) ... [2023-11-21 19:50:48,663 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:50:48" (1/1) ... [2023-11-21 19:50:48,672 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:50:48" (1/1) ... [2023-11-21 19:50:48,716 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:50:48" (1/1) ... [2023-11-21 19:50:48,733 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:50:48" (1/1) ... [2023-11-21 19:50:48,777 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 19:50:48,778 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 19:50:48,778 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 19:50:48,778 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 19:50:48,779 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:50:48" (1/1) ... [2023-11-21 19:50:48,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 19:50:48,798 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48af564f-ee5c-4415-a8f5-73390088a44b/bin/utaipan-verify-QoSU8krkJ5/z3 [2023-11-21 19:50:48,813 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48af564f-ee5c-4415-a8f5-73390088a44b/bin/utaipan-verify-QoSU8krkJ5/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 19:50:48,837 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48af564f-ee5c-4415-a8f5-73390088a44b/bin/utaipan-verify-QoSU8krkJ5/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 19:50:48,854 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 19:50:48,854 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-21 19:50:48,854 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 19:50:48,854 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 19:50:49,115 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 19:50:49,118 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 19:50:50,542 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 19:50:52,693 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 19:50:52,693 INFO L308 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-21 19:50:52,695 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 07:50:52 BoogieIcfgContainer [2023-11-21 19:50:52,695 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 19:50:52,697 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 19:50:52,697 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 19:50:52,701 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 19:50:52,701 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 07:50:47" (1/3) ... [2023-11-21 19:50:52,702 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b8c37f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 07:50:52, skipping insertion in model container [2023-11-21 19:50:52,702 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:50:48" (2/3) ... [2023-11-21 19:50:52,702 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b8c37f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 07:50:52, skipping insertion in model container [2023-11-21 19:50:52,702 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 07:50:52" (3/3) ... [2023-11-21 19:50:52,708 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.v_Unidec.c [2023-11-21 19:50:52,727 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 19:50:52,727 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-21 19:50:52,784 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 19:50:52,792 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;@4ec4276a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 19:50:52,793 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-21 19:50:52,797 INFO L276 IsEmpty]: Start isEmpty. Operand has 7 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:50:52,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-21 19:50:52,803 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:50:52,804 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-21 19:50:52,805 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 19:50:52,812 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:50:52,813 INFO L85 PathProgramCache]: Analyzing trace with hash 36103455, now seen corresponding path program 1 times [2023-11-21 19:50:52,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:50:52,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635223176] [2023-11-21 19:50:52,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:50:52,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:50:53,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 19:50:53,109 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 19:50:53,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 19:50:53,353 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-21 19:50:53,355 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-21 19:50:53,357 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-21 19:50:53,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-21 19:50:53,367 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-21 19:50:53,371 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-21 19:50:53,408 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2023-11-21 19:50:53,424 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 07:50:53 BoogieIcfgContainer [2023-11-21 19:50:53,424 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-21 19:50:53,426 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-21 19:50:53,426 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-21 19:50:53,426 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-21 19:50:53,427 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 07:50:52" (3/4) ... [2023-11-21 19:50:53,431 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-21 19:50:53,432 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-21 19:50:53,434 INFO L158 Benchmark]: Toolchain (without parser) took 5895.63ms. Allocated memory was 123.7MB in the beginning and 276.8MB in the end (delta: 153.1MB). Free memory was 77.5MB in the beginning and 152.2MB in the end (delta: -74.6MB). Peak memory consumption was 80.1MB. Max. memory is 16.1GB. [2023-11-21 19:50:53,434 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 123.7MB. Free memory is still 71.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 19:50:53,435 INFO L158 Benchmark]: CACSL2BoogieTranslator took 731.25ms. Allocated memory was 123.7MB in the beginning and 165.7MB in the end (delta: 41.9MB). Free memory was 77.2MB in the beginning and 121.0MB in the end (delta: -43.8MB). Peak memory consumption was 27.4MB. Max. memory is 16.1GB. [2023-11-21 19:50:53,436 INFO L158 Benchmark]: Boogie Procedure Inliner took 294.71ms. Allocated memory is still 165.7MB. Free memory was 121.0MB in the beginning and 93.6MB in the end (delta: 27.4MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2023-11-21 19:50:53,441 INFO L158 Benchmark]: Boogie Preprocessor took 208.79ms. Allocated memory is still 165.7MB. Free memory was 93.6MB in the beginning and 84.3MB in the end (delta: 9.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-21 19:50:53,442 INFO L158 Benchmark]: RCFGBuilder took 3917.38ms. Allocated memory was 165.7MB in the beginning and 276.8MB in the end (delta: 111.1MB). Free memory was 84.3MB in the beginning and 191.0MB in the end (delta: -106.6MB). Peak memory consumption was 105.2MB. Max. memory is 16.1GB. [2023-11-21 19:50:53,444 INFO L158 Benchmark]: TraceAbstraction took 727.11ms. Allocated memory is still 276.8MB. Free memory was 191.0MB in the beginning and 152.2MB in the end (delta: 38.8MB). Peak memory consumption was 39.8MB. Max. memory is 16.1GB. [2023-11-21 19:50:53,444 INFO L158 Benchmark]: Witness Printer took 6.15ms. Allocated memory is still 276.8MB. Free memory is still 152.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 19:50:53,453 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 123.7MB. Free memory is still 71.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 731.25ms. Allocated memory was 123.7MB in the beginning and 165.7MB in the end (delta: 41.9MB). Free memory was 77.2MB in the beginning and 121.0MB in the end (delta: -43.8MB). Peak memory consumption was 27.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 294.71ms. Allocated memory is still 165.7MB. Free memory was 121.0MB in the beginning and 93.6MB in the end (delta: 27.4MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 208.79ms. Allocated memory is still 165.7MB. Free memory was 93.6MB in the beginning and 84.3MB in the end (delta: 9.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 3917.38ms. Allocated memory was 165.7MB in the beginning and 276.8MB in the end (delta: 111.1MB). Free memory was 84.3MB in the beginning and 191.0MB in the end (delta: -106.6MB). Peak memory consumption was 105.2MB. Max. memory is 16.1GB. * TraceAbstraction took 727.11ms. Allocated memory is still 276.8MB. Free memory was 191.0MB in the beginning and 152.2MB in the end (delta: 38.8MB). Peak memory consumption was 39.8MB. Max. memory is 16.1GB. * Witness Printer took 6.15ms. Allocated memory is still 276.8MB. Free memory is still 152.2MB. 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: 21]: 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 bitwiseAnd at line 129. Possible FailurePath: [L26] const SORT_1 mask_SORT_1 = (SORT_1)-1 >> (sizeof(SORT_1) * 8 - 1); [L27] const SORT_1 msb_SORT_1 = (SORT_1)1 << (1 - 1); [L29] const SORT_3 mask_SORT_3 = (SORT_3)-1 >> (sizeof(SORT_3) * 8 - 3); [L30] const SORT_3 msb_SORT_3 = (SORT_3)1 << (3 - 1); [L32] const SORT_5 mask_SORT_5 = (SORT_5)-1 >> (sizeof(SORT_5) * 8 - 2); [L33] const SORT_5 msb_SORT_5 = (SORT_5)1 << (2 - 1); [L35] const SORT_10 mask_SORT_10 = (SORT_10)-1 >> (sizeof(SORT_10) * 8 - 32); [L36] const SORT_10 msb_SORT_10 = (SORT_10)1 << (32 - 1); [L38] const SORT_22 mask_SORT_22 = (SORT_22)-1 >> (sizeof(SORT_22) * 8 - 16); [L39] const SORT_22 msb_SORT_22 = (SORT_22)1 << (16 - 1); [L41] const SORT_68 mask_SORT_68 = (SORT_68)-1 >> (sizeof(SORT_68) * 8 - 13); [L42] const SORT_68 msb_SORT_68 = (SORT_68)1 << (13 - 1); [L44] const SORT_71 mask_SORT_71 = (SORT_71)-1 >> (sizeof(SORT_71) * 8 - 6); [L45] const SORT_71 msb_SORT_71 = (SORT_71)1 << (6 - 1); [L47] const SORT_73 mask_SORT_73 = (SORT_73)-1 >> (sizeof(SORT_73) * 8 - 10); [L48] const SORT_73 msb_SORT_73 = (SORT_73)1 << (10 - 1); [L50] const SORT_79 mask_SORT_79 = (SORT_79)-1 >> (sizeof(SORT_79) * 8 - 9); [L51] const SORT_79 msb_SORT_79 = (SORT_79)1 << (9 - 1); [L53] const SORT_81 mask_SORT_81 = (SORT_81)-1 >> (sizeof(SORT_81) * 8 - 7); [L54] const SORT_81 msb_SORT_81 = (SORT_81)1 << (7 - 1); [L56] const SORT_84 mask_SORT_84 = (SORT_84)-1 >> (sizeof(SORT_84) * 8 - 12); [L57] const SORT_84 msb_SORT_84 = (SORT_84)1 << (12 - 1); [L59] const SORT_86 mask_SORT_86 = (SORT_86)-1 >> (sizeof(SORT_86) * 8 - 4); [L60] const SORT_86 msb_SORT_86 = (SORT_86)1 << (4 - 1); [L62] const SORT_1 var_7 = 0; [L63] const SORT_10 var_12 = 0; [L64] const SORT_1 var_16 = 1; [L65] const SORT_22 var_23 = 8; [L66] const SORT_22 var_24 = 10; [L67] const SORT_3 var_25 = 1; [L68] const SORT_22 var_28 = 88; [L69] const SORT_22 var_29 = 584; [L70] const SORT_3 var_30 = 3; [L71] const SORT_3 var_33 = 2; [L72] const SORT_22 var_37 = 705; [L73] const SORT_22 var_38 = 611; [L74] const SORT_3 var_39 = 5; [L75] const SORT_22 var_42 = 50825; [L76] const SORT_3 var_43 = 7; [L77] const SORT_3 var_46 = 6; [L78] const SORT_3 var_50 = 4; [L79] const SORT_22 var_65 = 0; [L80] const SORT_3 var_67 = 0; [L81] const SORT_71 var_72 = 0; [L82] const SORT_5 var_76 = 1; [L83] const SORT_79 var_80 = 0; [L84] const SORT_84 var_85 = 0; [L85] const SORT_5 var_89 = 3; [L86] const SORT_5 var_92 = 2; [L87] const SORT_68 var_97 = 1; [L88] const SORT_22 var_100 = 32767; [L89] const SORT_5 var_105 = 0; [L90] const SORT_73 var_119 = 1; [L91] const SORT_81 var_131 = 1; [L92] const SORT_86 var_141 = 1; [L94] SORT_1 input_2; [L95] SORT_3 input_4; [L96] SORT_5 input_6; [L97] SORT_22 input_66; [L98] SORT_22 input_96; [L99] SORT_22 input_108; [L100] SORT_22 input_109; [L101] SORT_22 input_118; [L102] SORT_22 input_130; [L103] SORT_22 input_140; [L104] SORT_22 input_157; [L105] SORT_22 input_166; [L106] SORT_22 input_170; [L107] SORT_22 input_179; [L108] SORT_22 input_181; [L109] SORT_22 input_190; [L110] SORT_22 input_197; [L111] SORT_22 input_201; [L112] SORT_22 input_204; [L113] SORT_22 input_206; [L115] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L115] SORT_1 state_8 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L116] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L116] SORT_1 state_20 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L117] EXPR __VERIFIER_nondet_ushort() & mask_SORT_22 [L117] SORT_22 state_58 = __VERIFIER_nondet_ushort() & mask_SORT_22; [L119] SORT_1 init_9_arg_1 = var_7; [L120] state_8 = init_9_arg_1 [L121] SORT_1 init_21_arg_1 = var_16; [L122] state_20 = init_21_arg_1 [L123] SORT_22 init_59_arg_1 = var_23; [L124] state_58 = init_59_arg_1 VAL [init_21_arg_1=1, init_59_arg_1=8, init_9_arg_1=0, mask_SORT_10=4294967295, mask_SORT_1=1, mask_SORT_22=65535, mask_SORT_3=7, mask_SORT_5=3, mask_SORT_68=8191, mask_SORT_71=63, mask_SORT_73=1023, mask_SORT_79=511, mask_SORT_81=127, mask_SORT_84=4095, mask_SORT_86=15, msb_SORT_10=2147483648, msb_SORT_1=1, msb_SORT_22=32768, msb_SORT_3=4, msb_SORT_5=2, msb_SORT_68=4096, msb_SORT_71=32, msb_SORT_73=512, msb_SORT_79=256, msb_SORT_81=64, msb_SORT_84=2048, msb_SORT_86=8, state_20=1, state_58=8, state_8=0, var_100=32767, var_105=0, var_119=1, var_12=0, var_131=1, var_141=1, var_16=1, var_23=8, var_24=10, var_25=1, var_28=88, var_29=584, var_30=3, var_33=2, var_37=705, var_38=611, var_39=5, var_42=50825, var_43=7, var_46=6, var_50=4, var_65=0, var_67=0, var_72=0, var_76=1, var_7=0, var_80=0, var_85=0, var_89=3, var_92=2, var_97=1] [L127] input_2 = __VERIFIER_nondet_uchar() [L128] input_4 = __VERIFIER_nondet_uchar() [L129] EXPR input_4 & mask_SORT_3 [L129] input_4 = input_4 & mask_SORT_3 [L130] input_6 = __VERIFIER_nondet_uchar() [L131] EXPR input_6 & mask_SORT_5 [L131] input_6 = input_6 & mask_SORT_5 [L132] input_66 = __VERIFIER_nondet_ushort() [L133] input_96 = __VERIFIER_nondet_ushort() [L134] input_108 = __VERIFIER_nondet_ushort() [L135] input_109 = __VERIFIER_nondet_ushort() [L136] input_118 = __VERIFIER_nondet_ushort() [L137] input_130 = __VERIFIER_nondet_ushort() [L138] input_140 = __VERIFIER_nondet_ushort() [L139] input_157 = __VERIFIER_nondet_ushort() [L140] input_166 = __VERIFIER_nondet_ushort() [L141] input_170 = __VERIFIER_nondet_ushort() [L142] input_179 = __VERIFIER_nondet_ushort() [L143] input_181 = __VERIFIER_nondet_ushort() [L144] input_190 = __VERIFIER_nondet_ushort() [L145] input_197 = __VERIFIER_nondet_ushort() [L146] input_201 = __VERIFIER_nondet_ushort() [L147] input_204 = __VERIFIER_nondet_ushort() [L148] input_206 = __VERIFIER_nondet_ushort() [L151] SORT_1 var_11_arg_0 = state_8; [L152] EXPR var_11_arg_0 & mask_SORT_1 [L152] var_11_arg_0 = var_11_arg_0 & mask_SORT_1 [L153] SORT_10 var_11 = var_11_arg_0; [L154] SORT_10 var_13_arg_0 = var_11; [L155] SORT_10 var_13_arg_1 = var_12; [L156] SORT_1 var_13 = var_13_arg_0 == var_13_arg_1; [L157] SORT_1 var_17_arg_0 = var_13; [L158] SORT_1 var_17 = ~var_17_arg_0; [L159] SORT_1 var_18_arg_0 = var_16; [L160] SORT_1 var_18_arg_1 = var_17; [L161] EXPR var_18_arg_0 & var_18_arg_1 [L161] SORT_1 var_18 = var_18_arg_0 & var_18_arg_1; [L162] EXPR var_18 & mask_SORT_1 [L162] var_18 = var_18 & mask_SORT_1 [L163] SORT_1 bad_19_arg_0 = var_18; [L164] CALL __VERIFIER_assert(!(bad_19_arg_0)) [L21] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L21] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, OverallIterations: 1, TraceHistogramMax: 1, 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=7occurred 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, 0.2s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 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 [2023-11-21 19:50:53,505 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48af564f-ee5c-4415-a8f5-73390088a44b/bin/utaipan-verify-QoSU8krkJ5/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_48af564f-ee5c-4415-a8f5-73390088a44b/bin/utaipan-verify-QoSU8krkJ5/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48af564f-ee5c-4415-a8f5-73390088a44b/bin/utaipan-verify-QoSU8krkJ5/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48af564f-ee5c-4415-a8f5-73390088a44b/bin/utaipan-verify-QoSU8krkJ5/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48af564f-ee5c-4415-a8f5-73390088a44b/bin/utaipan-verify-QoSU8krkJ5/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.v_Unidec.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48af564f-ee5c-4415-a8f5-73390088a44b/bin/utaipan-verify-QoSU8krkJ5/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48af564f-ee5c-4415-a8f5-73390088a44b/bin/utaipan-verify-QoSU8krkJ5 --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 64bit --witnessprinter.graph.data.programhash c14eea1490451e84235fd4f93f05fdff3c411b2c5f93e6c8c24af5ce00f88831 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 19:50:56,100 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 19:50:56,189 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48af564f-ee5c-4415-a8f5-73390088a44b/bin/utaipan-verify-QoSU8krkJ5/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2023-11-21 19:50:56,196 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 19:50:56,196 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 19:50:56,225 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 19:50:56,226 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 19:50:56,227 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 19:50:56,228 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 19:50:56,229 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 19:50:56,229 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-21 19:50:56,230 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-21 19:50:56,230 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-21 19:50:56,231 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-21 19:50:56,232 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-21 19:50:56,232 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-21 19:50:56,233 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 19:50:56,234 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 19:50:56,235 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 19:50:56,235 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 19:50:56,236 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 19:50:56,237 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 19:50:56,237 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-21 19:50:56,238 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-21 19:50:56,238 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-21 19:50:56,239 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 19:50:56,240 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 19:50:56,240 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 19:50:56,241 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 19:50:56,241 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 19:50:56,242 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 19:50:56,242 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 19:50:56,243 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 19:50:56,244 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 19:50:56,251 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 19:50:56,251 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-21 19:50:56,252 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-21 19:50:56,252 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 19:50:56,253 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 19:50:56,253 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-21 19:50:56,254 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 19:50:56,255 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_48af564f-ee5c-4415-a8f5-73390088a44b/bin/utaipan-verify-QoSU8krkJ5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48af564f-ee5c-4415-a8f5-73390088a44b/bin/utaipan-verify-QoSU8krkJ5 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c14eea1490451e84235fd4f93f05fdff3c411b2c5f93e6c8c24af5ce00f88831 [2023-11-21 19:50:56,663 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 19:50:56,684 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 19:50:56,687 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 19:50:56,689 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 19:50:56,691 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 19:50:56,693 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48af564f-ee5c-4415-a8f5-73390088a44b/bin/utaipan-verify-QoSU8krkJ5/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.v_Unidec.c [2023-11-21 19:50:59,989 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 19:51:00,353 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 19:51:00,354 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48af564f-ee5c-4415-a8f5-73390088a44b/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.v_Unidec.c [2023-11-21 19:51:00,369 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48af564f-ee5c-4415-a8f5-73390088a44b/bin/utaipan-verify-QoSU8krkJ5/data/19ced6c40/6eaf856a889546659371366555e554a9/FLAG2cca14aa3 [2023-11-21 19:51:00,383 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48af564f-ee5c-4415-a8f5-73390088a44b/bin/utaipan-verify-QoSU8krkJ5/data/19ced6c40/6eaf856a889546659371366555e554a9 [2023-11-21 19:51:00,385 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 19:51:00,387 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 19:51:00,389 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 19:51:00,389 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 19:51:00,396 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 19:51:00,398 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 07:51:00" (1/1) ... [2023-11-21 19:51:00,402 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@356dee40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:51:00, skipping insertion in model container [2023-11-21 19:51:00,403 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 07:51:00" (1/1) ... [2023-11-21 19:51:00,458 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 19:51:00,631 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_48af564f-ee5c-4415-a8f5-73390088a44b/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.v_Unidec.c[1248,1261] [2023-11-21 19:51:00,898 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 19:51:00,910 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 19:51:00,923 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_48af564f-ee5c-4415-a8f5-73390088a44b/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.v_Unidec.c[1248,1261] [2023-11-21 19:51:01,074 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 19:51:01,092 INFO L206 MainTranslator]: Completed translation [2023-11-21 19:51:01,092 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:51:01 WrapperNode [2023-11-21 19:51:01,096 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 19:51:01,097 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 19:51:01,097 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 19:51:01,098 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 19:51:01,106 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:51:01" (1/1) ... [2023-11-21 19:51:01,153 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:51:01" (1/1) ... [2023-11-21 19:51:01,252 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 670 [2023-11-21 19:51:01,254 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 19:51:01,254 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 19:51:01,255 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 19:51:01,255 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 19:51:01,265 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:51:01" (1/1) ... [2023-11-21 19:51:01,265 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:51:01" (1/1) ... [2023-11-21 19:51:01,272 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:51:01" (1/1) ... [2023-11-21 19:51:01,272 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:51:01" (1/1) ... [2023-11-21 19:51:01,326 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:51:01" (1/1) ... [2023-11-21 19:51:01,330 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:51:01" (1/1) ... [2023-11-21 19:51:01,334 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:51:01" (1/1) ... [2023-11-21 19:51:01,347 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:51:01" (1/1) ... [2023-11-21 19:51:01,355 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 19:51:01,360 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 19:51:01,361 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 19:51:01,361 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 19:51:01,362 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:51:01" (1/1) ... [2023-11-21 19:51:01,368 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 19:51:01,380 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48af564f-ee5c-4415-a8f5-73390088a44b/bin/utaipan-verify-QoSU8krkJ5/z3 [2023-11-21 19:51:01,392 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48af564f-ee5c-4415-a8f5-73390088a44b/bin/utaipan-verify-QoSU8krkJ5/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 19:51:01,407 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48af564f-ee5c-4415-a8f5-73390088a44b/bin/utaipan-verify-QoSU8krkJ5/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 19:51:01,438 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 19:51:01,438 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-21 19:51:01,438 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 19:51:01,438 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 19:51:01,695 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 19:51:01,712 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 19:51:02,649 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 19:51:02,733 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 19:51:02,733 INFO L308 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-21 19:51:02,735 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 07:51:02 BoogieIcfgContainer [2023-11-21 19:51:02,735 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 19:51:02,739 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 19:51:02,739 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 19:51:02,742 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 19:51:02,743 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 07:51:00" (1/3) ... [2023-11-21 19:51:02,744 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@392bbbd9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 07:51:02, skipping insertion in model container [2023-11-21 19:51:02,744 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:51:01" (2/3) ... [2023-11-21 19:51:02,746 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@392bbbd9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 07:51:02, skipping insertion in model container [2023-11-21 19:51:02,746 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 07:51:02" (3/3) ... [2023-11-21 19:51:02,748 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.v_Unidec.c [2023-11-21 19:51:02,770 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 19:51:02,770 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-21 19:51:02,829 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 19:51:02,839 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;@2b724784, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 19:51:02,840 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-21 19:51:02,844 INFO L276 IsEmpty]: Start isEmpty. Operand has 7 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:51:02,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-21 19:51:02,851 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:51:02,852 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-21 19:51:02,853 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 19:51:02,860 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:51:02,860 INFO L85 PathProgramCache]: Analyzing trace with hash 1827279, now seen corresponding path program 1 times [2023-11-21 19:51:02,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-21 19:51:02,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1594714206] [2023-11-21 19:51:02,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:51:02,883 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 [2023-11-21 19:51:02,883 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48af564f-ee5c-4415-a8f5-73390088a44b/bin/utaipan-verify-QoSU8krkJ5/mathsat [2023-11-21 19:51:02,889 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48af564f-ee5c-4415-a8f5-73390088a44b/bin/utaipan-verify-QoSU8krkJ5/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) [2023-11-21 19:51:02,894 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48af564f-ee5c-4415-a8f5-73390088a44b/bin/utaipan-verify-QoSU8krkJ5/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 [2023-11-21 19:51:03,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:51:03,148 INFO L262 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-21 19:51:03,157 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 19:51:03,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:51:03,352 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 19:51:03,353 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-21 19:51:03,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1594714206] [2023-11-21 19:51:03,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1594714206] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:51:03,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:51:03,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 19:51:03,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203830867] [2023-11-21 19:51:03,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:51:03,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 19:51:03,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-21 19:51:03,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 19:51:03,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-21 19:51:03,394 INFO L87 Difference]: Start difference. First operand has 7 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:51:03,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:51:03,628 INFO L93 Difference]: Finished difference Result 15 states and 20 transitions. [2023-11-21 19:51:03,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 19:51:03,631 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2023-11-21 19:51:03,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:51:03,639 INFO L225 Difference]: With dead ends: 15 [2023-11-21 19:51:03,639 INFO L226 Difference]: Without dead ends: 9 [2023-11-21 19:51:03,642 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-21 19:51:03,646 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 3 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-21 19:51:03,648 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 6 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-21 19:51:03,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2023-11-21 19:51:03,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 8. [2023-11-21 19:51:03,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:51:03,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2023-11-21 19:51:03,680 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 4 [2023-11-21 19:51:03,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:51:03,681 INFO L495 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2023-11-21 19:51:03,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:51:03,682 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2023-11-21 19:51:03,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-21 19:51:03,682 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:51:03,682 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2023-11-21 19:51:03,693 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48af564f-ee5c-4415-a8f5-73390088a44b/bin/utaipan-verify-QoSU8krkJ5/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-11-21 19:51:03,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48af564f-ee5c-4415-a8f5-73390088a44b/bin/utaipan-verify-QoSU8krkJ5/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 [2023-11-21 19:51:03,885 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 19:51:03,886 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:51:03,886 INFO L85 PathProgramCache]: Analyzing trace with hash -1393329571, now seen corresponding path program 1 times [2023-11-21 19:51:03,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-21 19:51:03,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1235086811] [2023-11-21 19:51:03,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:51:03,889 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 [2023-11-21 19:51:03,890 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48af564f-ee5c-4415-a8f5-73390088a44b/bin/utaipan-verify-QoSU8krkJ5/mathsat [2023-11-21 19:51:03,891 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48af564f-ee5c-4415-a8f5-73390088a44b/bin/utaipan-verify-QoSU8krkJ5/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) [2023-11-21 19:51:03,919 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48af564f-ee5c-4415-a8f5-73390088a44b/bin/utaipan-verify-QoSU8krkJ5/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 [2023-11-21 19:51:04,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:51:04,569 INFO L262 TraceCheckSpWp]: Trace formula consists of 553 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-21 19:51:04,577 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 19:51:04,845 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:51:04,845 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 19:51:05,179 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:51:05,179 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-21 19:51:05,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1235086811] [2023-11-21 19:51:05,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1235086811] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 19:51:05,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1423953521] [2023-11-21 19:51:05,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:51:05,186 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-21 19:51:05,186 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48af564f-ee5c-4415-a8f5-73390088a44b/bin/utaipan-verify-QoSU8krkJ5/cvc4 [2023-11-21 19:51:05,191 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48af564f-ee5c-4415-a8f5-73390088a44b/bin/utaipan-verify-QoSU8krkJ5/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-21 19:51:05,207 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48af564f-ee5c-4415-a8f5-73390088a44b/bin/utaipan-verify-QoSU8krkJ5/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2023-11-21 19:51:05,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:51:05,926 INFO L262 TraceCheckSpWp]: Trace formula consists of 553 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-21 19:51:05,932 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 19:51:06,117 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:51:06,118 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 19:51:06,350 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:51:06,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1423953521] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 19:51:06,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1409498049] [2023-11-21 19:51:06,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:51:06,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 19:51:06,352 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48af564f-ee5c-4415-a8f5-73390088a44b/bin/utaipan-verify-QoSU8krkJ5/z3 [2023-11-21 19:51:06,359 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48af564f-ee5c-4415-a8f5-73390088a44b/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 19:51:06,391 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48af564f-ee5c-4415-a8f5-73390088a44b/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-21 19:51:06,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:51:06,696 INFO L262 TraceCheckSpWp]: Trace formula consists of 553 conjuncts, 27 conjunts are in the unsatisfiable core [2023-11-21 19:51:06,704 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 19:51:06,883 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:51:06,884 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 19:51:07,157 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:51:07,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1409498049] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 19:51:07,158 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-11-21 19:51:07,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 4, 5, 5] total 9 [2023-11-21 19:51:07,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840724847] [2023-11-21 19:51:07,159 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-11-21 19:51:07,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-21 19:51:07,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-21 19:51:07,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-21 19:51:07,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-11-21 19:51:07,162 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand has 10 states, 10 states have (on average 1.7) internal successors, (17), 9 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:51:07,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:51:07,471 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2023-11-21 19:51:07,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-21 19:51:07,472 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.7) internal successors, (17), 9 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-11-21 19:51:07,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:51:07,472 INFO L225 Difference]: With dead ends: 14 [2023-11-21 19:51:07,472 INFO L226 Difference]: Without dead ends: 12 [2023-11-21 19:51:07,473 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 24 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2023-11-21 19:51:07,475 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 12 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-21 19:51:07,475 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 10 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-21 19:51:07,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2023-11-21 19:51:07,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 11. [2023-11-21 19:51:07,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:51:07,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2023-11-21 19:51:07,479 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 7 [2023-11-21 19:51:07,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:51:07,480 INFO L495 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2023-11-21 19:51:07,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.7) internal successors, (17), 9 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:51:07,480 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2023-11-21 19:51:07,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-21 19:51:07,481 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:51:07,481 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1] [2023-11-21 19:51:07,509 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48af564f-ee5c-4415-a8f5-73390088a44b/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-21 19:51:07,686 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48af564f-ee5c-4415-a8f5-73390088a44b/bin/utaipan-verify-QoSU8krkJ5/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 [2023-11-21 19:51:07,886 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48af564f-ee5c-4415-a8f5-73390088a44b/bin/utaipan-verify-QoSU8krkJ5/cvc4 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0 [2023-11-21 19:51:08,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48af564f-ee5c-4415-a8f5-73390088a44b/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48af564f-ee5c-4415-a8f5-73390088a44b/bin/utaipan-verify-QoSU8krkJ5/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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48af564f-ee5c-4415-a8f5-73390088a44b/bin/utaipan-verify-QoSU8krkJ5/cvc4 --incremental --print-success --lang smt [2023-11-21 19:51:08,082 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 19:51:08,083 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:51:08,083 INFO L85 PathProgramCache]: Analyzing trace with hash -2112524529, now seen corresponding path program 2 times [2023-11-21 19:51:08,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-21 19:51:08,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [419922747] [2023-11-21 19:51:08,085 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-21 19:51:08,085 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 [2023-11-21 19:51:08,085 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48af564f-ee5c-4415-a8f5-73390088a44b/bin/utaipan-verify-QoSU8krkJ5/mathsat [2023-11-21 19:51:08,086 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48af564f-ee5c-4415-a8f5-73390088a44b/bin/utaipan-verify-QoSU8krkJ5/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) [2023-11-21 19:51:08,092 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48af564f-ee5c-4415-a8f5-73390088a44b/bin/utaipan-verify-QoSU8krkJ5/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 [2023-11-21 19:51:10,217 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-21 19:51:10,217 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-21 19:51:10,254 INFO L262 TraceCheckSpWp]: Trace formula consists of 1016 conjuncts, 396 conjunts are in the unsatisfiable core [2023-11-21 19:51:10,279 INFO L285 TraceCheckSpWp]: Computing forward predicates...