./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.counter.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73739fdd-482e-462a-94be-b57ce614fd60/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73739fdd-482e-462a-94be-b57ce614fd60/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73739fdd-482e-462a-94be-b57ce614fd60/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73739fdd-482e-462a-94be-b57ce614fd60/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.counter.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73739fdd-482e-462a-94be-b57ce614fd60/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73739fdd-482e-462a-94be-b57ce614fd60/bin/utaipan-verify-nQ1chXbOIh --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 17717b63b09459fcd66600a5d5a8a3b248f0a597d7e83f55a52c01ebdad7484d --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 18:53:48,765 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 18:53:48,830 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73739fdd-482e-462a-94be-b57ce614fd60/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-12-02 18:53:48,835 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 18:53:48,835 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 18:53:48,859 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 18:53:48,860 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 18:53:48,861 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 18:53:48,861 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 18:53:48,862 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 18:53:48,862 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 18:53:48,863 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 18:53:48,863 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 18:53:48,864 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 18:53:48,865 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 18:53:48,865 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 18:53:48,865 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 18:53:48,866 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 18:53:48,866 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 18:53:48,867 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 18:53:48,867 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 18:53:48,868 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 18:53:48,869 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 18:53:48,869 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 18:53:48,870 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 18:53:48,870 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 18:53:48,871 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 18:53:48,871 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 18:53:48,871 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 18:53:48,872 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 18:53:48,872 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 18:53:48,873 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 18:53:48,873 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 18:53:48,873 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 18:53:48,874 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 18:53:48,874 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 18:53:48,874 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 18:53:48,874 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 18:53:48,875 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 18:53:48,875 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 18:53:48,875 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 18:53:48,875 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 18:53:48,876 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 18:53:48,876 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 18:53:48,876 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_73739fdd-482e-462a-94be-b57ce614fd60/bin/utaipan-verify-nQ1chXbOIh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73739fdd-482e-462a-94be-b57ce614fd60/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 17717b63b09459fcd66600a5d5a8a3b248f0a597d7e83f55a52c01ebdad7484d [2023-12-02 18:53:49,092 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 18:53:49,113 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 18:53:49,116 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 18:53:49,117 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 18:53:49,117 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 18:53:49,119 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73739fdd-482e-462a-94be-b57ce614fd60/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.counter.c [2023-12-02 18:53:51,863 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 18:53:52,015 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 18:53:52,016 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73739fdd-482e-462a-94be-b57ce614fd60/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.counter.c [2023-12-02 18:53:52,023 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73739fdd-482e-462a-94be-b57ce614fd60/bin/utaipan-verify-nQ1chXbOIh/data/9ea65f329/f0c119eefefb4500a4b0ba482d0d1f11/FLAG36e5d5d44 [2023-12-02 18:53:52,035 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73739fdd-482e-462a-94be-b57ce614fd60/bin/utaipan-verify-nQ1chXbOIh/data/9ea65f329/f0c119eefefb4500a4b0ba482d0d1f11 [2023-12-02 18:53:52,037 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 18:53:52,038 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 18:53:52,039 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 18:53:52,040 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 18:53:52,045 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 18:53:52,045 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 06:53:52" (1/1) ... [2023-12-02 18:53:52,046 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b72c16e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:53:52, skipping insertion in model container [2023-12-02 18:53:52,047 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 06:53:52" (1/1) ... [2023-12-02 18:53:52,070 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 18:53:52,204 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_73739fdd-482e-462a-94be-b57ce614fd60/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.counter.c[1247,1260] [2023-12-02 18:53:52,235 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 18:53:52,245 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 18:53:52,255 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_73739fdd-482e-462a-94be-b57ce614fd60/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.counter.c[1247,1260] [2023-12-02 18:53:52,270 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 18:53:52,284 INFO L206 MainTranslator]: Completed translation [2023-12-02 18:53:52,284 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:53:52 WrapperNode [2023-12-02 18:53:52,285 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 18:53:52,286 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 18:53:52,286 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 18:53:52,286 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 18:53:52,294 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:53:52" (1/1) ... [2023-12-02 18:53:52,302 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:53:52" (1/1) ... [2023-12-02 18:53:52,351 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 121 [2023-12-02 18:53:52,351 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 18:53:52,352 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 18:53:52,352 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 18:53:52,352 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 18:53:52,361 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:53:52" (1/1) ... [2023-12-02 18:53:52,361 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:53:52" (1/1) ... [2023-12-02 18:53:52,364 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:53:52" (1/1) ... [2023-12-02 18:53:52,365 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:53:52" (1/1) ... [2023-12-02 18:53:52,374 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:53:52" (1/1) ... [2023-12-02 18:53:52,378 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:53:52" (1/1) ... [2023-12-02 18:53:52,380 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:53:52" (1/1) ... [2023-12-02 18:53:52,382 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:53:52" (1/1) ... [2023-12-02 18:53:52,386 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 18:53:52,387 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 18:53:52,387 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 18:53:52,387 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 18:53:52,388 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:53:52" (1/1) ... [2023-12-02 18:53:52,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 18:53:52,406 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73739fdd-482e-462a-94be-b57ce614fd60/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:53:52,418 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73739fdd-482e-462a-94be-b57ce614fd60/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 18:53:52,421 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73739fdd-482e-462a-94be-b57ce614fd60/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 18:53:52,452 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 18:53:52,452 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 18:53:52,452 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 18:53:52,452 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 18:53:52,520 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 18:53:52,522 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 18:53:52,752 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 18:53:52,877 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 18:53:52,877 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-02 18:53:52,879 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:53:52 BoogieIcfgContainer [2023-12-02 18:53:52,879 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 18:53:52,881 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 18:53:52,881 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 18:53:52,884 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 18:53:52,884 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 06:53:52" (1/3) ... [2023-12-02 18:53:52,884 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d9b047c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 06:53:52, skipping insertion in model container [2023-12-02 18:53:52,884 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:53:52" (2/3) ... [2023-12-02 18:53:52,885 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d9b047c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 06:53:52, skipping insertion in model container [2023-12-02 18:53:52,885 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:53:52" (3/3) ... [2023-12-02 18:53:52,886 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.counter.c [2023-12-02 18:53:52,901 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 18:53:52,901 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 18:53:52,939 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 18:53:52,945 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;@681a9be5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 18:53:52,945 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 18:53:52,948 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) [2023-12-02 18:53:52,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-12-02 18:53:52,952 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:53:52,953 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-12-02 18:53:52,953 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 18:53:52,957 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:53:52,957 INFO L85 PathProgramCache]: Analyzing trace with hash 4548445, now seen corresponding path program 1 times [2023-12-02 18:53:52,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:53:52,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225676725] [2023-12-02 18:53:52,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:53:52,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:53:53,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 18:53:53,175 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-02 18:53:53,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 18:53:53,253 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-12-02 18:53:53,255 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-12-02 18:53:53,256 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-02 18:53:53,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 18:53:53,262 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-12-02 18:53:53,266 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-12-02 18:53:53,279 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2023-12-02 18:53:53,286 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 06:53:53 BoogieIcfgContainer [2023-12-02 18:53:53,286 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-02 18:53:53,287 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-12-02 18:53:53,287 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-12-02 18:53:53,287 INFO L274 PluginConnector]: Witness Printer initialized [2023-12-02 18:53:53,288 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:53:52" (3/4) ... [2023-12-02 18:53:53,290 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-12-02 18:53:53,291 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-12-02 18:53:53,292 INFO L158 Benchmark]: Toolchain (without parser) took 1253.77ms. Allocated memory is still 130.0MB. Free memory was 71.5MB in the beginning and 90.3MB in the end (delta: -18.8MB). There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 18:53:53,292 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 92.3MB. Free memory is still 47.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 18:53:53,293 INFO L158 Benchmark]: CACSL2BoogieTranslator took 245.60ms. Allocated memory is still 130.0MB. Free memory was 71.2MB in the beginning and 59.7MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-12-02 18:53:53,293 INFO L158 Benchmark]: Boogie Procedure Inliner took 65.79ms. Allocated memory is still 130.0MB. Free memory was 59.7MB in the beginning and 102.1MB in the end (delta: -42.5MB). Peak memory consumption was 10.9MB. Max. memory is 16.1GB. [2023-12-02 18:53:53,294 INFO L158 Benchmark]: Boogie Preprocessor took 34.24ms. Allocated memory is still 130.0MB. Free memory was 102.1MB in the beginning and 100.3MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 18:53:53,294 INFO L158 Benchmark]: RCFGBuilder took 491.88ms. Allocated memory is still 130.0MB. Free memory was 100.3MB in the beginning and 68.0MB in the end (delta: 32.3MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2023-12-02 18:53:53,295 INFO L158 Benchmark]: TraceAbstraction took 405.35ms. Allocated memory is still 130.0MB. Free memory was 67.2MB in the beginning and 90.9MB in the end (delta: -23.6MB). There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 18:53:53,295 INFO L158 Benchmark]: Witness Printer took 3.85ms. Allocated memory is still 130.0MB. Free memory was 90.9MB in the beginning and 90.3MB in the end (delta: 568.4kB). There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 18:53:53,299 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 92.3MB. Free memory is still 47.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 245.60ms. Allocated memory is still 130.0MB. Free memory was 71.2MB in the beginning and 59.7MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 65.79ms. Allocated memory is still 130.0MB. Free memory was 59.7MB in the beginning and 102.1MB in the end (delta: -42.5MB). Peak memory consumption was 10.9MB. Max. memory is 16.1GB. * Boogie Preprocessor took 34.24ms. Allocated memory is still 130.0MB. Free memory was 102.1MB in the beginning and 100.3MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 491.88ms. Allocated memory is still 130.0MB. Free memory was 100.3MB in the beginning and 68.0MB in the end (delta: 32.3MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. * TraceAbstraction took 405.35ms. Allocated memory is still 130.0MB. Free memory was 67.2MB in the beginning and 90.9MB in the end (delta: -23.6MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 3.85ms. Allocated memory is still 130.0MB. Free memory was 90.9MB in the beginning and 90.3MB in the end (delta: 568.4kB). 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 48. 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_4 mask_SORT_4 = (SORT_4)-1 >> (sizeof(SORT_4) * 8 - 4); [L30] const SORT_4 msb_SORT_4 = (SORT_4)1 << (4 - 1); [L32] const SORT_4 var_5 = 1; [L33] const SORT_4 var_8 = 0; [L34] const SORT_1 var_12 = 1; [L35] const SORT_4 var_18 = 15; [L37] SORT_1 input_2; [L38] SORT_1 input_3; [L40] EXPR __VERIFIER_nondet_uchar() & mask_SORT_4 [L40] SORT_4 state_6 = __VERIFIER_nondet_uchar() & mask_SORT_4; [L42] SORT_4 init_7_arg_1 = var_5; [L43] state_6 = init_7_arg_1 VAL [init_7_arg_1=1, mask_SORT_1=1, mask_SORT_4=15, msb_SORT_1=1, msb_SORT_4=8, state_6=1, var_12=1, var_18=15, var_5=1, var_8=0] [L46] input_2 = __VERIFIER_nondet_uchar() [L47] input_3 = __VERIFIER_nondet_uchar() [L48] EXPR input_3 & mask_SORT_1 [L48] input_3 = input_3 & mask_SORT_1 [L51] SORT_4 var_9_arg_0 = state_6; [L52] SORT_4 var_9_arg_1 = var_8; [L53] SORT_1 var_9 = var_9_arg_0 != var_9_arg_1; [L54] SORT_1 var_13_arg_0 = var_9; [L55] SORT_1 var_13 = ~var_13_arg_0; [L56] SORT_1 var_14_arg_0 = var_12; [L57] SORT_1 var_14_arg_1 = var_13; [L58] EXPR var_14_arg_0 & var_14_arg_1 [L58] SORT_1 var_14 = var_14_arg_0 & var_14_arg_1; [L59] EXPR var_14 & mask_SORT_1 [L59] var_14 = var_14 & mask_SORT_1 [L60] SORT_1 bad_15_arg_0 = var_14; [L61] CALL __VERIFIER_assert(!(bad_15_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: 0.3s, 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, 0.1s 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 [2023-12-02 18:53:53,333 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73739fdd-482e-462a-94be-b57ce614fd60/bin/utaipan-verify-nQ1chXbOIh/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-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73739fdd-482e-462a-94be-b57ce614fd60/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73739fdd-482e-462a-94be-b57ce614fd60/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73739fdd-482e-462a-94be-b57ce614fd60/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73739fdd-482e-462a-94be-b57ce614fd60/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.counter.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73739fdd-482e-462a-94be-b57ce614fd60/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73739fdd-482e-462a-94be-b57ce614fd60/bin/utaipan-verify-nQ1chXbOIh --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 17717b63b09459fcd66600a5d5a8a3b248f0a597d7e83f55a52c01ebdad7484d --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 18:53:55,205 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 18:53:55,280 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73739fdd-482e-462a-94be-b57ce614fd60/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2023-12-02 18:53:55,285 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 18:53:55,285 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 18:53:55,313 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 18:53:55,313 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 18:53:55,314 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 18:53:55,314 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 18:53:55,315 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 18:53:55,315 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 18:53:55,316 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 18:53:55,317 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 18:53:55,317 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 18:53:55,318 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 18:53:55,318 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 18:53:55,319 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 18:53:55,320 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 18:53:55,320 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 18:53:55,321 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 18:53:55,321 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 18:53:55,322 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 18:53:55,322 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-02 18:53:55,323 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-02 18:53:55,323 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-02 18:53:55,324 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 18:53:55,324 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 18:53:55,325 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 18:53:55,325 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-02 18:53:55,325 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 18:53:55,326 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 18:53:55,326 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 18:53:55,327 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 18:53:55,327 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 18:53:55,327 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 18:53:55,327 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-12-02 18:53:55,328 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-02 18:53:55,328 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 18:53:55,328 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 18:53:55,328 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 18:53:55,328 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 18:53:55,329 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_73739fdd-482e-462a-94be-b57ce614fd60/bin/utaipan-verify-nQ1chXbOIh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73739fdd-482e-462a-94be-b57ce614fd60/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 17717b63b09459fcd66600a5d5a8a3b248f0a597d7e83f55a52c01ebdad7484d [2023-12-02 18:53:55,606 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 18:53:55,627 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 18:53:55,630 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 18:53:55,631 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 18:53:55,632 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 18:53:55,633 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73739fdd-482e-462a-94be-b57ce614fd60/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.counter.c [2023-12-02 18:53:58,428 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 18:53:58,619 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 18:53:58,620 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73739fdd-482e-462a-94be-b57ce614fd60/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.counter.c [2023-12-02 18:53:58,627 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73739fdd-482e-462a-94be-b57ce614fd60/bin/utaipan-verify-nQ1chXbOIh/data/774b1b16e/1b07fdac2ac44295810ab907663a1841/FLAG138574d85 [2023-12-02 18:53:58,640 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73739fdd-482e-462a-94be-b57ce614fd60/bin/utaipan-verify-nQ1chXbOIh/data/774b1b16e/1b07fdac2ac44295810ab907663a1841 [2023-12-02 18:53:58,641 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 18:53:58,643 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 18:53:58,644 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 18:53:58,645 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 18:53:58,650 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 18:53:58,650 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 06:53:58" (1/1) ... [2023-12-02 18:53:58,651 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10846bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:53:58, skipping insertion in model container [2023-12-02 18:53:58,652 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 06:53:58" (1/1) ... [2023-12-02 18:53:58,675 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 18:53:58,828 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_73739fdd-482e-462a-94be-b57ce614fd60/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.counter.c[1247,1260] [2023-12-02 18:53:58,859 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 18:53:58,872 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 18:53:58,886 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_73739fdd-482e-462a-94be-b57ce614fd60/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.counter.c[1247,1260] [2023-12-02 18:53:58,901 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 18:53:58,916 INFO L206 MainTranslator]: Completed translation [2023-12-02 18:53:58,917 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:53:58 WrapperNode [2023-12-02 18:53:58,917 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 18:53:58,918 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 18:53:58,918 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 18:53:58,918 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 18:53:58,926 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:53:58" (1/1) ... [2023-12-02 18:53:58,935 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:53:58" (1/1) ... [2023-12-02 18:53:58,956 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 71 [2023-12-02 18:53:58,956 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 18:53:58,957 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 18:53:58,958 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 18:53:58,958 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 18:53:58,966 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:53:58" (1/1) ... [2023-12-02 18:53:58,967 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:53:58" (1/1) ... [2023-12-02 18:53:58,970 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:53:58" (1/1) ... [2023-12-02 18:53:58,970 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:53:58" (1/1) ... [2023-12-02 18:53:58,977 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:53:58" (1/1) ... [2023-12-02 18:53:58,980 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:53:58" (1/1) ... [2023-12-02 18:53:58,983 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:53:58" (1/1) ... [2023-12-02 18:53:58,985 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:53:58" (1/1) ... [2023-12-02 18:53:58,988 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 18:53:58,989 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 18:53:58,989 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 18:53:58,989 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 18:53:58,990 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:53:58" (1/1) ... [2023-12-02 18:53:58,996 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 18:53:59,007 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73739fdd-482e-462a-94be-b57ce614fd60/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:53:59,019 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73739fdd-482e-462a-94be-b57ce614fd60/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 18:53:59,025 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73739fdd-482e-462a-94be-b57ce614fd60/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 18:53:59,059 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 18:53:59,059 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-12-02 18:53:59,060 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 18:53:59,060 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 18:53:59,143 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 18:53:59,145 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 18:53:59,278 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 18:53:59,310 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 18:53:59,311 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-02 18:53:59,311 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:53:59 BoogieIcfgContainer [2023-12-02 18:53:59,312 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 18:53:59,315 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 18:53:59,315 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 18:53:59,318 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 18:53:59,318 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 06:53:58" (1/3) ... [2023-12-02 18:53:59,319 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@688a83a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 06:53:59, skipping insertion in model container [2023-12-02 18:53:59,319 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:53:58" (2/3) ... [2023-12-02 18:53:59,320 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@688a83a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 06:53:59, skipping insertion in model container [2023-12-02 18:53:59,320 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:53:59" (3/3) ... [2023-12-02 18:53:59,321 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.counter.c [2023-12-02 18:53:59,340 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 18:53:59,340 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 18:53:59,429 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 18:53:59,436 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;@74138601, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 18:53:59,436 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 18:53:59,441 INFO L276 IsEmpty]: Start isEmpty. Operand has 8 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:53:59,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-12-02 18:53:59,447 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:53:59,447 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-12-02 18:53:59,448 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 18:53:59,453 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:53:59,453 INFO L85 PathProgramCache]: Analyzing trace with hash 1827279, now seen corresponding path program 1 times [2023-12-02 18:53:59,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 18:53:59,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [912076906] [2023-12-02 18:53:59,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:53:59,466 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 [2023-12-02 18:53:59,466 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73739fdd-482e-462a-94be-b57ce614fd60/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 18:53:59,468 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73739fdd-482e-462a-94be-b57ce614fd60/bin/utaipan-verify-nQ1chXbOIh/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) [2023-12-02 18:53:59,469 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73739fdd-482e-462a-94be-b57ce614fd60/bin/utaipan-verify-nQ1chXbOIh/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 [2023-12-02 18:53:59,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:53:59,537 INFO L262 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-02 18:53:59,544 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:53:59,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 18:53:59,757 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:53:59,758 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 18:53:59,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [912076906] [2023-12-02 18:53:59,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [912076906] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:53:59,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:53:59,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 18:53:59,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296216811] [2023-12-02 18:53:59,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:53:59,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 18:53:59,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 18:53:59,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 18:53:59,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 18:53:59,796 INFO L87 Difference]: Start difference. First operand has 8 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 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) [2023-12-02 18:53:59,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:53:59,847 INFO L93 Difference]: Finished difference Result 16 states and 24 transitions. [2023-12-02 18:53:59,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 18:53:59,849 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 [2023-12-02 18:53:59,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:53:59,864 INFO L225 Difference]: With dead ends: 16 [2023-12-02 18:53:59,864 INFO L226 Difference]: Without dead ends: 9 [2023-12-02 18:53:59,866 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 [2023-12-02 18:53:59,870 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 3 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s 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, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 18:53:59,870 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 6 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 18:53:59,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2023-12-02 18:53:59,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 8. [2023-12-02 18:53:59,892 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) [2023-12-02 18:53:59,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2023-12-02 18:53:59,893 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 4 [2023-12-02 18:53:59,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:53:59,894 INFO L495 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2023-12-02 18:53:59,894 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) [2023-12-02 18:53:59,894 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2023-12-02 18:53:59,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-12-02 18:53:59,894 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:53:59,894 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2023-12-02 18:53:59,902 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73739fdd-482e-462a-94be-b57ce614fd60/bin/utaipan-verify-nQ1chXbOIh/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 [2023-12-02 18:54:00,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73739fdd-482e-462a-94be-b57ce614fd60/bin/utaipan-verify-nQ1chXbOIh/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 [2023-12-02 18:54:00,097 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 18:54:00,098 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:54:00,098 INFO L85 PathProgramCache]: Analyzing trace with hash -1393329571, now seen corresponding path program 1 times [2023-12-02 18:54:00,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 18:54:00,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [597537415] [2023-12-02 18:54:00,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:54:00,099 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 [2023-12-02 18:54:00,100 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73739fdd-482e-462a-94be-b57ce614fd60/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 18:54:00,101 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73739fdd-482e-462a-94be-b57ce614fd60/bin/utaipan-verify-nQ1chXbOIh/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) [2023-12-02 18:54:00,102 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73739fdd-482e-462a-94be-b57ce614fd60/bin/utaipan-verify-nQ1chXbOIh/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 [2023-12-02 18:54:00,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:54:00,160 INFO L262 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 32 conjunts are in the unsatisfiable core [2023-12-02 18:54:00,164 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:54:00,578 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 18:54:00,578 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:54:01,258 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 18:54:01,258 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 18:54:01,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [597537415] [2023-12-02 18:54:01,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [597537415] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 18:54:01,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2077670778] [2023-12-02 18:54:01,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:54:01,259 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 18:54:01,260 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73739fdd-482e-462a-94be-b57ce614fd60/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 18:54:01,297 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73739fdd-482e-462a-94be-b57ce614fd60/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 18:54:01,301 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73739fdd-482e-462a-94be-b57ce614fd60/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2023-12-02 18:54:01,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:54:01,388 WARN L260 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 33 conjunts are in the unsatisfiable core [2023-12-02 18:54:01,390 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:54:01,607 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 18:54:01,607 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:54:02,114 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 18:54:02,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2077670778] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 18:54:02,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1279705572] [2023-12-02 18:54:02,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:54:02,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:54:02,115 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73739fdd-482e-462a-94be-b57ce614fd60/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:54:02,118 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73739fdd-482e-462a-94be-b57ce614fd60/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:54:02,121 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73739fdd-482e-462a-94be-b57ce614fd60/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-02 18:54:02,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:54:02,183 INFO L262 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 31 conjunts are in the unsatisfiable core [2023-12-02 18:54:02,185 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:54:02,418 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 18:54:02,418 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:54:02,862 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 18:54:02,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1279705572] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 18:54:02,863 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-12-02 18:54:02,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 4, 5, 5] total 11 [2023-12-02 18:54:02,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910182491] [2023-12-02 18:54:02,864 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-12-02 18:54:02,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-02 18:54:02,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 18:54:02,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-02 18:54:02,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-12-02 18:54:02,866 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand has 12 states, 12 states have (on average 1.75) internal successors, (21), 11 states have internal predecessors, (21), 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) [2023-12-02 18:54:03,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:54:03,207 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions. [2023-12-02 18:54:03,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-02 18:54:03,208 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.75) internal successors, (21), 11 states have internal predecessors, (21), 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 [2023-12-02 18:54:03,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:54:03,209 INFO L225 Difference]: With dead ends: 17 [2023-12-02 18:54:03,209 INFO L226 Difference]: Without dead ends: 15 [2023-12-02 18:54:03,210 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 23 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2023-12-02 18:54:03,211 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 12 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 18:54:03,212 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 13 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 18:54:03,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2023-12-02 18:54:03,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14. [2023-12-02 18:54:03,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.0769230769230769) internal successors, (14), 13 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:54:03,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2023-12-02 18:54:03,217 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 7 [2023-12-02 18:54:03,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:54:03,218 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2023-12-02 18:54:03,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.75) internal successors, (21), 11 states have internal predecessors, (21), 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) [2023-12-02 18:54:03,218 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2023-12-02 18:54:03,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-12-02 18:54:03,219 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:54:03,219 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1] [2023-12-02 18:54:03,221 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73739fdd-482e-462a-94be-b57ce614fd60/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (4)] Ended with exit code 0 [2023-12-02 18:54:03,422 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73739fdd-482e-462a-94be-b57ce614fd60/bin/utaipan-verify-nQ1chXbOIh/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 [2023-12-02 18:54:03,625 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73739fdd-482e-462a-94be-b57ce614fd60/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-02 18:54:03,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73739fdd-482e-462a-94be-b57ce614fd60/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73739fdd-482e-462a-94be-b57ce614fd60/bin/utaipan-verify-nQ1chXbOIh/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_73739fdd-482e-462a-94be-b57ce614fd60/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:54:03,822 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 18:54:03,822 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:54:03,822 INFO L85 PathProgramCache]: Analyzing trace with hash -57678563, now seen corresponding path program 2 times [2023-12-02 18:54:03,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 18:54:03,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1823135241] [2023-12-02 18:54:03,823 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 18:54:03,823 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 [2023-12-02 18:54:03,823 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73739fdd-482e-462a-94be-b57ce614fd60/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 18:54:03,824 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73739fdd-482e-462a-94be-b57ce614fd60/bin/utaipan-verify-nQ1chXbOIh/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) [2023-12-02 18:54:03,825 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73739fdd-482e-462a-94be-b57ce614fd60/bin/utaipan-verify-nQ1chXbOIh/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 [2023-12-02 18:54:03,903 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-02 18:54:03,903 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 18:54:03,907 INFO L262 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 61 conjunts are in the unsatisfiable core [2023-12-02 18:54:03,910 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:54:04,523 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 18:54:04,524 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:54:14,199 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 12 refuted. 3 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 18:54:14,199 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 18:54:14,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1823135241] [2023-12-02 18:54:14,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1823135241] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 18:54:14,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1231058245] [2023-12-02 18:54:14,200 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 18:54:14,200 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 18:54:14,200 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73739fdd-482e-462a-94be-b57ce614fd60/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 18:54:14,201 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73739fdd-482e-462a-94be-b57ce614fd60/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 18:54:14,206 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73739fdd-482e-462a-94be-b57ce614fd60/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2023-12-02 18:54:14,335 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-02 18:54:14,335 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 18:54:14,339 INFO L262 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 61 conjunts are in the unsatisfiable core [2023-12-02 18:54:14,342 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:54:14,683 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 18:54:14,683 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:54:33,662 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 18:54:33,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1231058245] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 18:54:33,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1410926509] [2023-12-02 18:54:33,662 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 18:54:33,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:54:33,663 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73739fdd-482e-462a-94be-b57ce614fd60/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:54:33,664 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73739fdd-482e-462a-94be-b57ce614fd60/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:54:33,664 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73739fdd-482e-462a-94be-b57ce614fd60/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-02 18:54:33,729 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-02 18:54:33,730 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 18:54:33,732 INFO L262 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 54 conjunts are in the unsatisfiable core [2023-12-02 18:54:33,734 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:54:34,475 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 1 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-02 18:54:34,475 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:54:38,473 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 18:54:38,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1410926509] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 18:54:38,473 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-12-02 18:54:38,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 9, 8] total 25 [2023-12-02 18:54:38,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578639698] [2023-12-02 18:54:38,473 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-12-02 18:54:38,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-02 18:54:38,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 18:54:38,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-02 18:54:38,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=494, Unknown=6, NotChecked=0, Total=650 [2023-12-02 18:54:38,476 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand has 26 states, 26 states have (on average 2.1153846153846154) internal successors, (55), 25 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:54:43,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:54:43,852 INFO L93 Difference]: Finished difference Result 27 states and 31 transitions. [2023-12-02 18:54:43,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-02 18:54:43,853 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.1153846153846154) internal successors, (55), 25 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2023-12-02 18:54:43,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:54:43,853 INFO L225 Difference]: With dead ends: 27 [2023-12-02 18:54:43,853 INFO L226 Difference]: Without dead ends: 0 [2023-12-02 18:54:43,854 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 46 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 383 ImplicationChecksByTransitivity, 25.2s TimeCoverageRelationStatistics Valid=527, Invalid=1107, Unknown=6, NotChecked=0, Total=1640 [2023-12-02 18:54:43,856 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 67 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 18:54:43,856 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 0 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 18:54:43,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-12-02 18:54:43,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-12-02 18:54:43,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2023-12-02 18:54:43,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-12-02 18:54:43,857 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2023-12-02 18:54:43,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:54:43,858 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-12-02 18:54:43,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.1153846153846154) internal successors, (55), 25 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:54:43,858 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-12-02 18:54:43,858 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-02 18:54:43,861 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-02 18:54:43,865 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73739fdd-482e-462a-94be-b57ce614fd60/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-12-02 18:54:44,063 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73739fdd-482e-462a-94be-b57ce614fd60/bin/utaipan-verify-nQ1chXbOIh/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)] Ended with exit code 0 [2023-12-02 18:54:44,264 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73739fdd-482e-462a-94be-b57ce614fd60/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2023-12-02 18:54:44,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73739fdd-482e-462a-94be-b57ce614fd60/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73739fdd-482e-462a-94be-b57ce614fd60/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73739fdd-482e-462a-94be-b57ce614fd60/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt [2023-12-02 18:54:44,464 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-12-02 18:54:44,691 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-12-02 18:54:44,691 INFO L899 garLoopResultBuilder]: For program point L21(line 21) no Hoare annotation was computed. [2023-12-02 18:54:44,691 INFO L899 garLoopResultBuilder]: For program point L21-1(line 21) no Hoare annotation was computed. [2023-12-02 18:54:44,691 INFO L899 garLoopResultBuilder]: For program point L21-3(line 21) no Hoare annotation was computed. [2023-12-02 18:54:44,692 INFO L895 garLoopResultBuilder]: At program point L44-2(lines 44 81) the Hoare annotation is: (and (= (_ bv1 8) |ULTIMATE.start_main_~mask_SORT_1~0#1|) (= (_ bv1 8) |ULTIMATE.start_main_~var_5~0#1|) (not (= ((_ zero_extend 24) |ULTIMATE.start_main_~state_6~0#1|) (_ bv0 32))) (= |ULTIMATE.start_main_~var_8~0#1| (_ bv0 8)) (= (_ bv15 8) |ULTIMATE.start_main_~mask_SORT_4~0#1|) (= (_ bv15 8) |ULTIMATE.start_main_~var_18~0#1|) (= (_ bv1 8) |ULTIMATE.start_main_~var_12~0#1|) (exists ((|ULTIMATE.start_main_~var_21_arg_1~0#1| (_ BitVec 8))) (= ((_ extract 7 0) (bvand (_ bv15 32) ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) |ULTIMATE.start_main_~var_21_arg_1~0#1|))))) |ULTIMATE.start_main_~state_6~0#1|))) [2023-12-02 18:54:44,692 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-12-02 18:54:44,692 INFO L899 garLoopResultBuilder]: For program point L44-3(lines 44 81) no Hoare annotation was computed. [2023-12-02 18:54:44,692 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 21) no Hoare annotation was computed. [2023-12-02 18:54:44,695 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1] [2023-12-02 18:54:44,697 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-12-02 18:54:44,709 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: QuantifierExpression (exists ULTIMATE.start_main_~var_21_arg_1~0#1 : bv8 :: ~bvand~32(15bv32, ~zero_extend~32~8(~zero_extend~32~8(ULTIMATE.start_main_~var_21_arg_1~0#1)[7:0]))[7:0] == ~state_6~0) could not be translated [2023-12-02 18:54:44,710 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 06:54:44 BoogieIcfgContainer [2023-12-02 18:54:44,711 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-02 18:54:44,711 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-12-02 18:54:44,711 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-12-02 18:54:44,711 INFO L274 PluginConnector]: Witness Printer initialized [2023-12-02 18:54:44,712 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:53:59" (3/4) ... [2023-12-02 18:54:44,713 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-12-02 18:54:44,721 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2023-12-02 18:54:44,721 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-12-02 18:54:44,721 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-12-02 18:54:44,722 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-12-02 18:54:44,795 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73739fdd-482e-462a-94be-b57ce614fd60/bin/utaipan-verify-nQ1chXbOIh/witness.graphml [2023-12-02 18:54:44,795 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73739fdd-482e-462a-94be-b57ce614fd60/bin/utaipan-verify-nQ1chXbOIh/witness.yml [2023-12-02 18:54:44,795 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-12-02 18:54:44,796 INFO L158 Benchmark]: Toolchain (without parser) took 46152.97ms. Allocated memory was 104.9MB in the beginning and 318.8MB in the end (delta: 213.9MB). Free memory was 80.7MB in the beginning and 144.4MB in the end (delta: -63.6MB). Peak memory consumption was 152.3MB. Max. memory is 16.1GB. [2023-12-02 18:54:44,796 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 71.3MB. Free memory is still 47.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 18:54:44,796 INFO L158 Benchmark]: CACSL2BoogieTranslator took 272.92ms. Allocated memory is still 104.9MB. Free memory was 80.7MB in the beginning and 68.8MB in the end (delta: 11.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-12-02 18:54:44,797 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.76ms. Allocated memory is still 104.9MB. Free memory was 68.8MB in the beginning and 67.2MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 18:54:44,797 INFO L158 Benchmark]: Boogie Preprocessor took 30.52ms. Allocated memory is still 104.9MB. Free memory was 67.2MB in the beginning and 66.0MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 18:54:44,797 INFO L158 Benchmark]: RCFGBuilder took 323.20ms. Allocated memory is still 104.9MB. Free memory was 65.7MB in the beginning and 52.9MB in the end (delta: 12.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-12-02 18:54:44,797 INFO L158 Benchmark]: TraceAbstraction took 45395.81ms. Allocated memory was 104.9MB in the beginning and 318.8MB in the end (delta: 213.9MB). Free memory was 52.1MB in the beginning and 149.6MB in the end (delta: -97.5MB). Peak memory consumption was 116.7MB. Max. memory is 16.1GB. [2023-12-02 18:54:44,798 INFO L158 Benchmark]: Witness Printer took 84.26ms. Allocated memory is still 318.8MB. Free memory was 149.6MB in the beginning and 144.4MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-12-02 18:54:44,799 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 71.3MB. Free memory is still 47.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 272.92ms. Allocated memory is still 104.9MB. Free memory was 80.7MB in the beginning and 68.8MB in the end (delta: 11.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 38.76ms. Allocated memory is still 104.9MB. Free memory was 68.8MB in the beginning and 67.2MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 30.52ms. Allocated memory is still 104.9MB. Free memory was 67.2MB in the beginning and 66.0MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 323.20ms. Allocated memory is still 104.9MB. Free memory was 65.7MB in the beginning and 52.9MB in the end (delta: 12.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 45395.81ms. Allocated memory was 104.9MB in the beginning and 318.8MB in the end (delta: 213.9MB). Free memory was 52.1MB in the beginning and 149.6MB in the end (delta: -97.5MB). Peak memory consumption was 116.7MB. Max. memory is 16.1GB. * Witness Printer took 84.26ms. Allocated memory is still 318.8MB. Free memory was 149.6MB in the beginning and 144.4MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: QuantifierExpression (exists ULTIMATE.start_main_~var_21_arg_1~0#1 : bv8 :: ~bvand~32(15bv32, ~zero_extend~32~8(~zero_extend~32~8(ULTIMATE.start_main_~var_21_arg_1~0#1)[7:0]))[7:0] == ~state_6~0) could not be translated * 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 - PositiveResult [Line: 21]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 8 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 45.3s, OverallIterations: 3, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 5.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 82 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 82 mSDsluCounter, 19 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 15 mSDsCounter, 24 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 79 IncrementalHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 24 mSolverCounterUnsat, 4 mSDtfsCounter, 79 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 131 GetRequests, 70 SyntacticMatches, 5 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 425 ImplicationChecksByTransitivity, 25.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred in iteration=2, InterpolantAutomatonStates: 32, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 9 NumberOfFragments, 34 HoareAnnotationTreeSize, 1 FomulaSimplifications, 36 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 1 FomulaSimplificationsInter, 1709 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 37.1s InterpolantComputationTime, 64 NumberOfCodeBlocks, 64 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 111 ConstructedInterpolants, 46 QuantifiedInterpolants, 54056 SizeOfPredicates, 287 NumberOfNonLiveVariables, 600 ConjunctsInSsa, 288 ConjunctsInUnsatCore, 13 InterpolantComputations, 1 PerfectInterpolantSequences, 5/102 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 44]: Loop Invariant Derived loop invariant: (((((((1 == mask_SORT_1) && (1 == var_5)) && !((state_6 == 0))) && (var_8 == 0)) && (15 == mask_SORT_4)) && (15 == var_18)) && (1 == var_12)) RESULT: Ultimate proved your program to be correct! [2023-12-02 18:54:44,824 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73739fdd-482e-462a-94be-b57ce614fd60/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE