./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_b03.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c441ca-c24f-43c8-ade6-0627f728d8fa/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c441ca-c24f-43c8-ade6-0627f728d8fa/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_21c441ca-c24f-43c8-ade6-0627f728d8fa/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c441ca-c24f-43c8-ade6-0627f728d8fa/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_b03.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c441ca-c24f-43c8-ade6-0627f728d8fa/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_21c441ca-c24f-43c8-ade6-0627f728d8fa/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 a9990c01c9a1f9597f7bc9fb384dfed8f76d280524d4aa5e1bce8b343e8f7c08 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 15:13:59,057 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 15:13:59,122 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c441ca-c24f-43c8-ade6-0627f728d8fa/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-12-02 15:13:59,126 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 15:13:59,126 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 15:13:59,151 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 15:13:59,151 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 15:13:59,152 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 15:13:59,153 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 15:13:59,153 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 15:13:59,154 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 15:13:59,154 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 15:13:59,155 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 15:13:59,155 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 15:13:59,156 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 15:13:59,156 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 15:13:59,157 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 15:13:59,157 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 15:13:59,158 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 15:13:59,158 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 15:13:59,159 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 15:13:59,159 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 15:13:59,160 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 15:13:59,161 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 15:13:59,161 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 15:13:59,162 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 15:13:59,162 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 15:13:59,162 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 15:13:59,163 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 15:13:59,163 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 15:13:59,163 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 15:13:59,164 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 15:13:59,164 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 15:13:59,165 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 15:13:59,165 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 15:13:59,165 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 15:13:59,165 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 15:13:59,165 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 15:13:59,166 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 15:13:59,166 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 15:13:59,166 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 15:13:59,166 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 15:13:59,167 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 15:13:59,167 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 15:13:59,167 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_21c441ca-c24f-43c8-ade6-0627f728d8fa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c441ca-c24f-43c8-ade6-0627f728d8fa/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a9990c01c9a1f9597f7bc9fb384dfed8f76d280524d4aa5e1bce8b343e8f7c08 [2023-12-02 15:13:59,395 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 15:13:59,420 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 15:13:59,423 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 15:13:59,425 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 15:13:59,425 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 15:13:59,426 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c441ca-c24f-43c8-ade6-0627f728d8fa/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_b03.c [2023-12-02 15:14:02,222 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 15:14:02,455 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 15:14:02,456 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c441ca-c24f-43c8-ade6-0627f728d8fa/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_b03.c [2023-12-02 15:14:02,471 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c441ca-c24f-43c8-ade6-0627f728d8fa/bin/utaipan-verify-nQ1chXbOIh/data/af30bbad1/6402b82a997249aeb3026ec17ab52635/FLAG0bfda65b9 [2023-12-02 15:14:02,486 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c441ca-c24f-43c8-ade6-0627f728d8fa/bin/utaipan-verify-nQ1chXbOIh/data/af30bbad1/6402b82a997249aeb3026ec17ab52635 [2023-12-02 15:14:02,488 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 15:14:02,490 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 15:14:02,491 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 15:14:02,491 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 15:14:02,496 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 15:14:02,497 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:14:02" (1/1) ... [2023-12-02 15:14:02,498 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61c3f6c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:14:02, skipping insertion in model container [2023-12-02 15:14:02,498 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:14:02" (1/1) ... [2023-12-02 15:14:02,566 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 15:14:02,730 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_21c441ca-c24f-43c8-ade6-0627f728d8fa/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_b03.c[1245,1258] [2023-12-02 15:14:02,989 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 15:14:02,998 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 15:14:03,012 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_21c441ca-c24f-43c8-ade6-0627f728d8fa/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_b03.c[1245,1258] [2023-12-02 15:14:03,122 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 15:14:03,137 INFO L206 MainTranslator]: Completed translation [2023-12-02 15:14:03,138 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:14:03 WrapperNode [2023-12-02 15:14:03,138 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 15:14:03,139 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 15:14:03,139 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 15:14:03,140 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 15:14:03,147 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:14:03" (1/1) ... [2023-12-02 15:14:03,189 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:14:03" (1/1) ... [2023-12-02 15:14:03,383 INFO L138 Inliner]: procedures = 17, calls = 16, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1999 [2023-12-02 15:14:03,384 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 15:14:03,385 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 15:14:03,385 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 15:14:03,385 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 15:14:03,395 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:14:03" (1/1) ... [2023-12-02 15:14:03,396 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:14:03" (1/1) ... [2023-12-02 15:14:03,423 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:14:03" (1/1) ... [2023-12-02 15:14:03,424 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:14:03" (1/1) ... [2023-12-02 15:14:03,478 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:14:03" (1/1) ... [2023-12-02 15:14:03,487 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:14:03" (1/1) ... [2023-12-02 15:14:03,513 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:14:03" (1/1) ... [2023-12-02 15:14:03,524 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:14:03" (1/1) ... [2023-12-02 15:14:03,561 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 15:14:03,562 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 15:14:03,562 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 15:14:03,562 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 15:14:03,563 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:14:03" (1/1) ... [2023-12-02 15:14:03,569 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 15:14:03,581 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c441ca-c24f-43c8-ade6-0627f728d8fa/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:14:03,593 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c441ca-c24f-43c8-ade6-0627f728d8fa/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 15:14:03,595 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c441ca-c24f-43c8-ade6-0627f728d8fa/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 15:14:03,629 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 15:14:03,629 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 15:14:03,629 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 15:14:03,629 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 15:14:03,912 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 15:14:03,914 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 15:14:05,416 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 15:14:07,862 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 15:14:07,862 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-02 15:14:07,864 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:14:07 BoogieIcfgContainer [2023-12-02 15:14:07,864 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 15:14:07,867 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 15:14:07,867 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 15:14:07,871 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 15:14:07,871 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 03:14:02" (1/3) ... [2023-12-02 15:14:07,872 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d57dfed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:14:07, skipping insertion in model container [2023-12-02 15:14:07,872 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:14:03" (2/3) ... [2023-12-02 15:14:07,872 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d57dfed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:14:07, skipping insertion in model container [2023-12-02 15:14:07,872 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:14:07" (3/3) ... [2023-12-02 15:14:07,874 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.h_b03.c [2023-12-02 15:14:07,895 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 15:14:07,895 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 15:14:07,942 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 15:14:07,949 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;@557800e0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 15:14:07,949 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 15:14:07,953 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 15:14:07,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-12-02 15:14:07,959 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:14:07,960 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-12-02 15:14:07,960 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:14:07,965 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:14:07,966 INFO L85 PathProgramCache]: Analyzing trace with hash 24937781, now seen corresponding path program 1 times [2023-12-02 15:14:07,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:14:07,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806427319] [2023-12-02 15:14:07,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:14:07,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:14:08,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 15:14:08,556 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-02 15:14:08,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 15:14:08,849 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-12-02 15:14:08,851 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-12-02 15:14:08,852 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-02 15:14:08,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 15:14:08,858 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-12-02 15:14:08,862 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-12-02 15:14:08,895 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2023-12-02 15:14:08,912 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 03:14:08 BoogieIcfgContainer [2023-12-02 15:14:08,912 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-02 15:14:08,913 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-12-02 15:14:08,913 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-12-02 15:14:08,913 INFO L274 PluginConnector]: Witness Printer initialized [2023-12-02 15:14:08,914 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:14:07" (3/4) ... [2023-12-02 15:14:08,916 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-12-02 15:14:08,917 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-12-02 15:14:08,918 INFO L158 Benchmark]: Toolchain (without parser) took 6428.45ms. Allocated memory was 165.7MB in the beginning and 367.0MB in the end (delta: 201.3MB). Free memory was 123.4MB in the beginning and 136.1MB in the end (delta: -12.7MB). Peak memory consumption was 190.7MB. Max. memory is 16.1GB. [2023-12-02 15:14:08,919 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 165.7MB. Free memory is still 137.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 15:14:08,919 INFO L158 Benchmark]: CACSL2BoogieTranslator took 647.25ms. Allocated memory is still 165.7MB. Free memory was 122.8MB in the beginning and 75.5MB in the end (delta: 47.3MB). Peak memory consumption was 46.1MB. Max. memory is 16.1GB. [2023-12-02 15:14:08,920 INFO L158 Benchmark]: Boogie Procedure Inliner took 244.75ms. Allocated memory was 165.7MB in the beginning and 205.5MB in the end (delta: 39.8MB). Free memory was 75.5MB in the beginning and 151.0MB in the end (delta: -75.4MB). Peak memory consumption was 38.5MB. Max. memory is 16.1GB. [2023-12-02 15:14:08,921 INFO L158 Benchmark]: Boogie Preprocessor took 176.19ms. Allocated memory is still 205.5MB. Free memory was 151.0MB in the beginning and 140.2MB in the end (delta: 10.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-12-02 15:14:08,922 INFO L158 Benchmark]: RCFGBuilder took 4302.96ms. Allocated memory was 205.5MB in the beginning and 367.0MB in the end (delta: 161.5MB). Free memory was 139.4MB in the beginning and 246.2MB in the end (delta: -106.8MB). Peak memory consumption was 150.1MB. Max. memory is 16.1GB. [2023-12-02 15:14:08,922 INFO L158 Benchmark]: TraceAbstraction took 1045.19ms. Allocated memory is still 367.0MB. Free memory was 245.2MB in the beginning and 136.1MB in the end (delta: 109.1MB). Peak memory consumption was 109.1MB. Max. memory is 16.1GB. [2023-12-02 15:14:08,922 INFO L158 Benchmark]: Witness Printer took 4.30ms. Allocated memory is still 367.0MB. Free memory is still 136.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 15:14:08,926 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 165.7MB. Free memory is still 137.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 647.25ms. Allocated memory is still 165.7MB. Free memory was 122.8MB in the beginning and 75.5MB in the end (delta: 47.3MB). Peak memory consumption was 46.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 244.75ms. Allocated memory was 165.7MB in the beginning and 205.5MB in the end (delta: 39.8MB). Free memory was 75.5MB in the beginning and 151.0MB in the end (delta: -75.4MB). Peak memory consumption was 38.5MB. Max. memory is 16.1GB. * Boogie Preprocessor took 176.19ms. Allocated memory is still 205.5MB. Free memory was 151.0MB in the beginning and 140.2MB in the end (delta: 10.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * RCFGBuilder took 4302.96ms. Allocated memory was 205.5MB in the beginning and 367.0MB in the end (delta: 161.5MB). Free memory was 139.4MB in the beginning and 246.2MB in the end (delta: -106.8MB). Peak memory consumption was 150.1MB. Max. memory is 16.1GB. * TraceAbstraction took 1045.19ms. Allocated memory is still 367.0MB. Free memory was 245.2MB in the beginning and 136.1MB in the end (delta: 109.1MB). Peak memory consumption was 109.1MB. Max. memory is 16.1GB. * Witness Printer took 4.30ms. Allocated memory is still 367.0MB. Free memory is still 136.1MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 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 bitwiseOr at line 343, overapproximation of bitwiseAnd at line 330. 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_7 mask_SORT_7 = (SORT_7)-1 >> (sizeof(SORT_7) * 8 - 4); [L30] const SORT_7 msb_SORT_7 = (SORT_7)1 << (4 - 1); [L32] const SORT_11 mask_SORT_11 = (SORT_11)-1 >> (sizeof(SORT_11) * 8 - 32); [L33] const SORT_11 msb_SORT_11 = (SORT_11)1 << (32 - 1); [L35] const SORT_37 mask_SORT_37 = (SORT_37)-1 >> (sizeof(SORT_37) * 8 - 3); [L36] const SORT_37 msb_SORT_37 = (SORT_37)1 << (3 - 1); [L38] const SORT_67 mask_SORT_67 = (SORT_67)-1 >> (sizeof(SORT_67) * 8 - 2); [L39] const SORT_67 msb_SORT_67 = (SORT_67)1 << (2 - 1); [L41] const SORT_7 var_8 = 0; [L42] const SORT_11 var_13 = 0; [L43] const SORT_11 var_16 = 8; [L44] const SORT_11 var_20 = 4; [L45] const SORT_11 var_24 = 2; [L46] const SORT_11 var_28 = 1; [L47] const SORT_1 var_33 = 1; [L48] const SORT_37 var_38 = 0; [L49] const SORT_1 var_47 = 0; [L50] const SORT_67 var_68 = 0; [L51] const SORT_67 var_71 = 1; [L52] const SORT_37 var_81 = 7; [L53] const SORT_37 var_104 = 1; [L54] const SORT_37 var_123 = 2; [L55] const SORT_37 var_138 = 4; [L56] const SORT_67 var_154 = 2; [L57] const SORT_7 var_394 = 8; [L58] const SORT_7 var_397 = 4; [L59] const SORT_7 var_400 = 2; [L60] const SORT_7 var_401 = 1; [L62] SORT_1 input_2; [L63] SORT_1 input_3; [L64] SORT_1 input_4; [L65] SORT_1 input_5; [L66] SORT_1 input_6; [L67] SORT_37 input_75; [L68] SORT_37 input_76; [L69] SORT_37 input_77; [L70] SORT_37 input_78; [L71] SORT_37 input_79; [L72] SORT_37 input_80; [L73] SORT_37 input_85; [L74] SORT_37 input_87; [L75] SORT_37 input_89; [L76] SORT_37 input_94; [L77] SORT_37 input_96; [L78] SORT_37 input_98; [L79] SORT_37 input_102; [L80] SORT_37 input_103; [L81] SORT_37 input_108; [L82] SORT_37 input_110; [L83] SORT_37 input_115; [L84] SORT_37 input_117; [L85] SORT_37 input_121; [L86] SORT_37 input_122; [L87] SORT_37 input_127; [L88] SORT_37 input_132; [L89] SORT_37 input_136; [L90] SORT_37 input_137; [L91] SORT_37 input_149; [L92] SORT_37 input_160; [L93] SORT_37 input_161; [L94] SORT_37 input_162; [L95] SORT_37 input_163; [L96] SORT_37 input_164; [L97] SORT_37 input_165; [L98] SORT_37 input_168; [L99] SORT_37 input_170; [L100] SORT_37 input_172; [L101] SORT_37 input_177; [L102] SORT_37 input_179; [L103] SORT_37 input_181; [L104] SORT_37 input_185; [L105] SORT_37 input_186; [L106] SORT_37 input_189; [L107] SORT_37 input_191; [L108] SORT_37 input_196; [L109] SORT_37 input_198; [L110] SORT_37 input_202; [L111] SORT_37 input_203; [L112] SORT_37 input_206; [L113] SORT_37 input_211; [L114] SORT_37 input_215; [L115] SORT_37 input_216; [L116] SORT_37 input_226; [L117] SORT_37 input_233; [L118] SORT_37 input_234; [L119] SORT_37 input_235; [L120] SORT_37 input_236; [L121] SORT_37 input_237; [L122] SORT_37 input_238; [L123] SORT_37 input_241; [L124] SORT_37 input_243; [L125] SORT_37 input_245; [L126] SORT_37 input_250; [L127] SORT_37 input_252; [L128] SORT_37 input_254; [L129] SORT_37 input_258; [L130] SORT_37 input_259; [L131] SORT_37 input_262; [L132] SORT_37 input_264; [L133] SORT_37 input_269; [L134] SORT_37 input_271; [L135] SORT_37 input_275; [L136] SORT_37 input_276; [L137] SORT_37 input_279; [L138] SORT_37 input_284; [L139] SORT_37 input_288; [L140] SORT_37 input_289; [L141] SORT_37 input_299; [L142] SORT_37 input_306; [L143] SORT_37 input_307; [L144] SORT_37 input_308; [L145] SORT_37 input_309; [L146] SORT_37 input_310; [L147] SORT_37 input_311; [L148] SORT_37 input_314; [L149] SORT_37 input_316; [L150] SORT_37 input_318; [L151] SORT_37 input_323; [L152] SORT_37 input_325; [L153] SORT_37 input_327; [L154] SORT_37 input_331; [L155] SORT_37 input_332; [L156] SORT_37 input_335; [L157] SORT_37 input_337; [L158] SORT_37 input_342; [L159] SORT_37 input_344; [L160] SORT_37 input_348; [L161] SORT_37 input_349; [L162] SORT_37 input_352; [L163] SORT_37 input_357; [L164] SORT_37 input_361; [L165] SORT_37 input_362; [L166] SORT_37 input_372; [L167] SORT_7 input_391; [L168] SORT_7 input_392; [L169] SORT_7 input_393; [L171] EXPR __VERIFIER_nondet_uchar() & mask_SORT_7 [L171] SORT_7 state_9 = __VERIFIER_nondet_uchar() & mask_SORT_7; [L172] EXPR __VERIFIER_nondet_uchar() & mask_SORT_37 [L172] SORT_37 state_39 = __VERIFIER_nondet_uchar() & mask_SORT_37; [L173] EXPR __VERIFIER_nondet_uchar() & mask_SORT_37 [L173] SORT_37 state_41 = __VERIFIER_nondet_uchar() & mask_SORT_37; [L174] EXPR __VERIFIER_nondet_uchar() & mask_SORT_37 [L174] SORT_37 state_43 = __VERIFIER_nondet_uchar() & mask_SORT_37; [L175] EXPR __VERIFIER_nondet_uchar() & mask_SORT_37 [L175] SORT_37 state_45 = __VERIFIER_nondet_uchar() & mask_SORT_37; [L176] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L176] SORT_1 state_48 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L177] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L177] SORT_1 state_50 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L178] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L178] SORT_1 state_52 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L179] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L179] SORT_1 state_54 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L180] EXPR __VERIFIER_nondet_uchar() & mask_SORT_7 [L180] SORT_7 state_56 = __VERIFIER_nondet_uchar() & mask_SORT_7; [L181] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L181] SORT_1 state_59 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L182] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L182] SORT_1 state_61 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L183] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L183] SORT_1 state_63 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L184] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L184] SORT_1 state_65 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L185] EXPR __VERIFIER_nondet_uchar() & mask_SORT_67 [L185] SORT_67 state_69 = __VERIFIER_nondet_uchar() & mask_SORT_67; [L187] SORT_7 init_10_arg_1 = var_8; [L188] state_9 = init_10_arg_1 [L189] SORT_37 init_40_arg_1 = var_38; [L190] state_39 = init_40_arg_1 [L191] SORT_37 init_42_arg_1 = var_38; [L192] state_41 = init_42_arg_1 [L193] SORT_37 init_44_arg_1 = var_38; [L194] state_43 = init_44_arg_1 [L195] SORT_37 init_46_arg_1 = var_38; [L196] state_45 = init_46_arg_1 [L197] SORT_1 init_49_arg_1 = var_47; [L198] state_48 = init_49_arg_1 [L199] SORT_1 init_51_arg_1 = var_47; [L200] state_50 = init_51_arg_1 [L201] SORT_1 init_53_arg_1 = var_47; [L202] state_52 = init_53_arg_1 [L203] SORT_1 init_55_arg_1 = var_47; [L204] state_54 = init_55_arg_1 [L205] SORT_7 init_57_arg_1 = var_8; [L206] state_56 = init_57_arg_1 [L207] SORT_1 init_60_arg_1 = var_47; [L208] state_59 = init_60_arg_1 [L209] SORT_1 init_62_arg_1 = var_47; [L210] state_61 = init_62_arg_1 [L211] SORT_1 init_64_arg_1 = var_47; [L212] state_63 = init_64_arg_1 [L213] SORT_1 init_66_arg_1 = var_47; [L214] state_65 = init_66_arg_1 [L215] SORT_67 init_70_arg_1 = var_68; [L216] state_69 = init_70_arg_1 VAL [init_10_arg_1=0, init_40_arg_1=0, init_42_arg_1=0, init_44_arg_1=0, init_46_arg_1=0, init_49_arg_1=0, init_51_arg_1=0, init_53_arg_1=0, init_55_arg_1=0, init_57_arg_1=0, init_60_arg_1=0, init_62_arg_1=0, init_64_arg_1=0, init_66_arg_1=0, init_70_arg_1=0, mask_SORT_11=4294967295, mask_SORT_1=1, mask_SORT_37=7, mask_SORT_67=3, mask_SORT_7=15, msb_SORT_11=2147483648, msb_SORT_1=1, msb_SORT_37=4, msb_SORT_67=2, msb_SORT_7=8, state_39=0, state_41=0, state_43=0, state_45=0, state_48=0, state_50=0, state_52=0, state_54=0, state_56=0, state_59=0, state_61=0, state_63=0, state_65=0, state_69=0, state_9=0, var_104=1, var_123=2, var_138=4, var_13=0, var_154=2, var_16=8, var_20=4, var_24=2, var_28=1, var_33=1, var_38=0, var_394=8, var_397=4, var_400=2, var_401=1, var_47=0, var_68=0, var_71=1, var_81=7, var_8=0] [L219] input_2 = __VERIFIER_nondet_uchar() [L220] input_3 = __VERIFIER_nondet_uchar() [L221] input_4 = __VERIFIER_nondet_uchar() [L222] input_5 = __VERIFIER_nondet_uchar() [L223] input_6 = __VERIFIER_nondet_uchar() [L224] input_75 = __VERIFIER_nondet_uchar() [L225] input_76 = __VERIFIER_nondet_uchar() [L226] input_77 = __VERIFIER_nondet_uchar() [L227] input_78 = __VERIFIER_nondet_uchar() [L228] input_79 = __VERIFIER_nondet_uchar() [L229] input_80 = __VERIFIER_nondet_uchar() [L230] input_85 = __VERIFIER_nondet_uchar() [L231] input_87 = __VERIFIER_nondet_uchar() [L232] input_89 = __VERIFIER_nondet_uchar() [L233] input_94 = __VERIFIER_nondet_uchar() [L234] input_96 = __VERIFIER_nondet_uchar() [L235] input_98 = __VERIFIER_nondet_uchar() [L236] input_102 = __VERIFIER_nondet_uchar() [L237] input_103 = __VERIFIER_nondet_uchar() [L238] input_108 = __VERIFIER_nondet_uchar() [L239] input_110 = __VERIFIER_nondet_uchar() [L240] input_115 = __VERIFIER_nondet_uchar() [L241] input_117 = __VERIFIER_nondet_uchar() [L242] input_121 = __VERIFIER_nondet_uchar() [L243] input_122 = __VERIFIER_nondet_uchar() [L244] input_127 = __VERIFIER_nondet_uchar() [L245] input_132 = __VERIFIER_nondet_uchar() [L246] input_136 = __VERIFIER_nondet_uchar() [L247] input_137 = __VERIFIER_nondet_uchar() [L248] input_149 = __VERIFIER_nondet_uchar() [L249] input_160 = __VERIFIER_nondet_uchar() [L250] input_161 = __VERIFIER_nondet_uchar() [L251] input_162 = __VERIFIER_nondet_uchar() [L252] input_163 = __VERIFIER_nondet_uchar() [L253] input_164 = __VERIFIER_nondet_uchar() [L254] input_165 = __VERIFIER_nondet_uchar() [L255] input_168 = __VERIFIER_nondet_uchar() [L256] input_170 = __VERIFIER_nondet_uchar() [L257] input_172 = __VERIFIER_nondet_uchar() [L258] input_177 = __VERIFIER_nondet_uchar() [L259] input_179 = __VERIFIER_nondet_uchar() [L260] input_181 = __VERIFIER_nondet_uchar() [L261] input_185 = __VERIFIER_nondet_uchar() [L262] input_186 = __VERIFIER_nondet_uchar() [L263] input_189 = __VERIFIER_nondet_uchar() [L264] input_191 = __VERIFIER_nondet_uchar() [L265] input_196 = __VERIFIER_nondet_uchar() [L266] input_198 = __VERIFIER_nondet_uchar() [L267] input_202 = __VERIFIER_nondet_uchar() [L268] input_203 = __VERIFIER_nondet_uchar() [L269] input_206 = __VERIFIER_nondet_uchar() [L270] input_211 = __VERIFIER_nondet_uchar() [L271] input_215 = __VERIFIER_nondet_uchar() [L272] input_216 = __VERIFIER_nondet_uchar() [L273] input_226 = __VERIFIER_nondet_uchar() [L274] input_233 = __VERIFIER_nondet_uchar() [L275] input_234 = __VERIFIER_nondet_uchar() [L276] input_235 = __VERIFIER_nondet_uchar() [L277] input_236 = __VERIFIER_nondet_uchar() [L278] input_237 = __VERIFIER_nondet_uchar() [L279] input_238 = __VERIFIER_nondet_uchar() [L280] input_241 = __VERIFIER_nondet_uchar() [L281] input_243 = __VERIFIER_nondet_uchar() [L282] input_245 = __VERIFIER_nondet_uchar() [L283] input_250 = __VERIFIER_nondet_uchar() [L284] input_252 = __VERIFIER_nondet_uchar() [L285] input_254 = __VERIFIER_nondet_uchar() [L286] input_258 = __VERIFIER_nondet_uchar() [L287] input_259 = __VERIFIER_nondet_uchar() [L288] input_262 = __VERIFIER_nondet_uchar() [L289] input_264 = __VERIFIER_nondet_uchar() [L290] input_269 = __VERIFIER_nondet_uchar() [L291] input_271 = __VERIFIER_nondet_uchar() [L292] input_275 = __VERIFIER_nondet_uchar() [L293] input_276 = __VERIFIER_nondet_uchar() [L294] input_279 = __VERIFIER_nondet_uchar() [L295] input_284 = __VERIFIER_nondet_uchar() [L296] input_288 = __VERIFIER_nondet_uchar() [L297] input_289 = __VERIFIER_nondet_uchar() [L298] input_299 = __VERIFIER_nondet_uchar() [L299] input_306 = __VERIFIER_nondet_uchar() [L300] input_307 = __VERIFIER_nondet_uchar() [L301] input_308 = __VERIFIER_nondet_uchar() [L302] input_309 = __VERIFIER_nondet_uchar() [L303] input_310 = __VERIFIER_nondet_uchar() [L304] input_311 = __VERIFIER_nondet_uchar() [L305] input_314 = __VERIFIER_nondet_uchar() [L306] input_316 = __VERIFIER_nondet_uchar() [L307] input_318 = __VERIFIER_nondet_uchar() [L308] input_323 = __VERIFIER_nondet_uchar() [L309] input_325 = __VERIFIER_nondet_uchar() [L310] input_327 = __VERIFIER_nondet_uchar() [L311] input_331 = __VERIFIER_nondet_uchar() [L312] input_332 = __VERIFIER_nondet_uchar() [L313] input_335 = __VERIFIER_nondet_uchar() [L314] input_337 = __VERIFIER_nondet_uchar() [L315] input_342 = __VERIFIER_nondet_uchar() [L316] input_344 = __VERIFIER_nondet_uchar() [L317] input_348 = __VERIFIER_nondet_uchar() [L318] input_349 = __VERIFIER_nondet_uchar() [L319] input_352 = __VERIFIER_nondet_uchar() [L320] input_357 = __VERIFIER_nondet_uchar() [L321] input_361 = __VERIFIER_nondet_uchar() [L322] input_362 = __VERIFIER_nondet_uchar() [L323] input_372 = __VERIFIER_nondet_uchar() [L324] input_391 = __VERIFIER_nondet_uchar() [L325] input_392 = __VERIFIER_nondet_uchar() [L326] input_393 = __VERIFIER_nondet_uchar() [L329] SORT_7 var_12_arg_0 = state_9; [L330] EXPR var_12_arg_0 & mask_SORT_7 [L330] var_12_arg_0 = var_12_arg_0 & mask_SORT_7 [L331] SORT_11 var_12 = var_12_arg_0; [L332] SORT_11 var_14_arg_0 = var_12; [L333] SORT_11 var_14_arg_1 = var_13; [L334] SORT_1 var_14 = var_14_arg_0 == var_14_arg_1; [L335] SORT_7 var_15_arg_0 = state_9; [L336] EXPR var_15_arg_0 & mask_SORT_7 [L336] var_15_arg_0 = var_15_arg_0 & mask_SORT_7 [L337] SORT_11 var_15 = var_15_arg_0; [L338] SORT_11 var_17_arg_0 = var_15; [L339] SORT_11 var_17_arg_1 = var_16; [L340] SORT_1 var_17 = var_17_arg_0 == var_17_arg_1; [L341] SORT_1 var_18_arg_0 = var_14; [L342] SORT_1 var_18_arg_1 = var_17; [L343] EXPR var_18_arg_0 | var_18_arg_1 [L343] SORT_1 var_18 = var_18_arg_0 | var_18_arg_1; [L344] SORT_7 var_19_arg_0 = state_9; [L345] EXPR var_19_arg_0 & mask_SORT_7 [L345] var_19_arg_0 = var_19_arg_0 & mask_SORT_7 [L346] SORT_11 var_19 = var_19_arg_0; [L347] SORT_11 var_21_arg_0 = var_19; [L348] SORT_11 var_21_arg_1 = var_20; [L349] SORT_1 var_21 = var_21_arg_0 == var_21_arg_1; [L350] SORT_1 var_22_arg_0 = var_18; [L351] SORT_1 var_22_arg_1 = var_21; [L352] EXPR var_22_arg_0 | var_22_arg_1 [L352] SORT_1 var_22 = var_22_arg_0 | var_22_arg_1; [L353] SORT_7 var_23_arg_0 = state_9; [L354] EXPR var_23_arg_0 & mask_SORT_7 [L354] var_23_arg_0 = var_23_arg_0 & mask_SORT_7 [L355] SORT_11 var_23 = var_23_arg_0; [L356] SORT_11 var_25_arg_0 = var_23; [L357] SORT_11 var_25_arg_1 = var_24; [L358] SORT_1 var_25 = var_25_arg_0 == var_25_arg_1; [L359] SORT_1 var_26_arg_0 = var_22; [L360] SORT_1 var_26_arg_1 = var_25; [L361] EXPR var_26_arg_0 | var_26_arg_1 [L361] SORT_1 var_26 = var_26_arg_0 | var_26_arg_1; [L362] SORT_7 var_27_arg_0 = state_9; [L363] EXPR var_27_arg_0 & mask_SORT_7 [L363] var_27_arg_0 = var_27_arg_0 & mask_SORT_7 [L364] SORT_11 var_27 = var_27_arg_0; [L365] SORT_11 var_29_arg_0 = var_27; [L366] SORT_11 var_29_arg_1 = var_28; [L367] SORT_1 var_29 = var_29_arg_0 == var_29_arg_1; [L368] SORT_1 var_30_arg_0 = var_26; [L369] SORT_1 var_30_arg_1 = var_29; [L370] EXPR var_30_arg_0 | var_30_arg_1 [L370] SORT_1 var_30 = var_30_arg_0 | var_30_arg_1; [L371] SORT_1 var_34_arg_0 = var_30; [L372] SORT_1 var_34 = ~var_34_arg_0; [L373] SORT_1 var_35_arg_0 = var_33; [L374] SORT_1 var_35_arg_1 = var_34; [L375] EXPR var_35_arg_0 & var_35_arg_1 [L375] SORT_1 var_35 = var_35_arg_0 & var_35_arg_1; [L376] EXPR var_35 & mask_SORT_1 [L376] var_35 = var_35 & mask_SORT_1 [L377] SORT_1 bad_36_arg_0 = var_35; [L378] CALL __VERIFIER_assert(!(bad_36_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: 0.9s, 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, 0.4s 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 15:14:08,949 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c441ca-c24f-43c8-ade6-0627f728d8fa/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-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c441ca-c24f-43c8-ade6-0627f728d8fa/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c441ca-c24f-43c8-ade6-0627f728d8fa/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_21c441ca-c24f-43c8-ade6-0627f728d8fa/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c441ca-c24f-43c8-ade6-0627f728d8fa/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_b03.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c441ca-c24f-43c8-ade6-0627f728d8fa/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_21c441ca-c24f-43c8-ade6-0627f728d8fa/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 a9990c01c9a1f9597f7bc9fb384dfed8f76d280524d4aa5e1bce8b343e8f7c08 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 15:14:11,005 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 15:14:11,083 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c441ca-c24f-43c8-ade6-0627f728d8fa/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2023-12-02 15:14:11,090 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 15:14:11,090 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 15:14:11,118 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 15:14:11,119 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 15:14:11,120 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 15:14:11,120 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 15:14:11,121 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 15:14:11,122 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 15:14:11,122 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 15:14:11,123 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 15:14:11,123 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 15:14:11,124 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 15:14:11,124 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 15:14:11,125 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 15:14:11,126 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 15:14:11,126 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 15:14:11,127 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 15:14:11,127 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 15:14:11,128 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 15:14:11,128 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-02 15:14:11,129 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-02 15:14:11,129 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-02 15:14:11,130 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 15:14:11,130 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 15:14:11,130 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 15:14:11,131 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-02 15:14:11,131 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 15:14:11,132 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 15:14:11,132 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 15:14:11,133 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 15:14:11,133 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 15:14:11,133 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 15:14:11,133 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-12-02 15:14:11,134 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-02 15:14:11,134 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 15:14:11,134 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 15:14:11,134 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 15:14:11,135 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 15:14:11,135 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_21c441ca-c24f-43c8-ade6-0627f728d8fa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c441ca-c24f-43c8-ade6-0627f728d8fa/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a9990c01c9a1f9597f7bc9fb384dfed8f76d280524d4aa5e1bce8b343e8f7c08 [2023-12-02 15:14:11,448 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 15:14:11,469 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 15:14:11,471 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 15:14:11,473 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 15:14:11,473 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 15:14:11,474 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c441ca-c24f-43c8-ade6-0627f728d8fa/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_b03.c [2023-12-02 15:14:14,289 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 15:14:14,590 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 15:14:14,591 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c441ca-c24f-43c8-ade6-0627f728d8fa/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_b03.c [2023-12-02 15:14:14,607 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c441ca-c24f-43c8-ade6-0627f728d8fa/bin/utaipan-verify-nQ1chXbOIh/data/2d85f5c03/95572e15fd254f5d87f57313505f3e41/FLAG118596e11 [2023-12-02 15:14:14,622 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c441ca-c24f-43c8-ade6-0627f728d8fa/bin/utaipan-verify-nQ1chXbOIh/data/2d85f5c03/95572e15fd254f5d87f57313505f3e41 [2023-12-02 15:14:14,625 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 15:14:14,627 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 15:14:14,629 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 15:14:14,629 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 15:14:14,634 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 15:14:14,635 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:14:14" (1/1) ... [2023-12-02 15:14:14,636 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c7260b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:14:14, skipping insertion in model container [2023-12-02 15:14:14,636 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:14:14" (1/1) ... [2023-12-02 15:14:14,714 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 15:14:14,887 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_21c441ca-c24f-43c8-ade6-0627f728d8fa/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_b03.c[1245,1258] [2023-12-02 15:14:15,122 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 15:14:15,135 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 15:14:15,149 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_21c441ca-c24f-43c8-ade6-0627f728d8fa/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_b03.c[1245,1258] [2023-12-02 15:14:15,237 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 15:14:15,253 INFO L206 MainTranslator]: Completed translation [2023-12-02 15:14:15,254 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:14:15 WrapperNode [2023-12-02 15:14:15,254 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 15:14:15,255 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 15:14:15,255 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 15:14:15,255 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 15:14:15,263 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:14:15" (1/1) ... [2023-12-02 15:14:15,302 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:14:15" (1/1) ... [2023-12-02 15:14:15,410 INFO L138 Inliner]: procedures = 17, calls = 16, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1559 [2023-12-02 15:14:15,411 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 15:14:15,412 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 15:14:15,412 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 15:14:15,412 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 15:14:15,423 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:14:15" (1/1) ... [2023-12-02 15:14:15,423 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:14:15" (1/1) ... [2023-12-02 15:14:15,436 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:14:15" (1/1) ... [2023-12-02 15:14:15,436 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:14:15" (1/1) ... [2023-12-02 15:14:15,480 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:14:15" (1/1) ... [2023-12-02 15:14:15,487 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:14:15" (1/1) ... [2023-12-02 15:14:15,496 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:14:15" (1/1) ... [2023-12-02 15:14:15,507 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:14:15" (1/1) ... [2023-12-02 15:14:15,525 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 15:14:15,526 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 15:14:15,526 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 15:14:15,526 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 15:14:15,527 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:14:15" (1/1) ... [2023-12-02 15:14:15,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 15:14:15,546 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c441ca-c24f-43c8-ade6-0627f728d8fa/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:14:15,559 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c441ca-c24f-43c8-ade6-0627f728d8fa/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 15:14:15,562 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c441ca-c24f-43c8-ade6-0627f728d8fa/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 15:14:15,597 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 15:14:15,598 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-12-02 15:14:15,598 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 15:14:15,598 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 15:14:15,901 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 15:14:15,903 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 15:14:17,018 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 15:14:17,129 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 15:14:17,130 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-02 15:14:17,130 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:14:17 BoogieIcfgContainer [2023-12-02 15:14:17,130 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 15:14:17,133 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 15:14:17,134 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 15:14:17,137 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 15:14:17,137 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 03:14:14" (1/3) ... [2023-12-02 15:14:17,138 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30f2a048 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:14:17, skipping insertion in model container [2023-12-02 15:14:17,138 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:14:15" (2/3) ... [2023-12-02 15:14:17,138 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30f2a048 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:14:17, skipping insertion in model container [2023-12-02 15:14:17,139 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:14:17" (3/3) ... [2023-12-02 15:14:17,140 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.h_b03.c [2023-12-02 15:14:17,157 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 15:14:17,157 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 15:14:17,201 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 15:14:17,207 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;@1d6b4760, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 15:14:17,207 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 15:14:17,211 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 15:14:17,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-12-02 15:14:17,217 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:14:17,218 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-12-02 15:14:17,218 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:14:17,223 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:14:17,223 INFO L85 PathProgramCache]: Analyzing trace with hash 1827279, now seen corresponding path program 1 times [2023-12-02 15:14:17,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:14:17,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [456907108] [2023-12-02 15:14:17,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:14:17,237 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 15:14:17,237 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c441ca-c24f-43c8-ade6-0627f728d8fa/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:14:17,238 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c441ca-c24f-43c8-ade6-0627f728d8fa/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 15:14:17,244 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c441ca-c24f-43c8-ade6-0627f728d8fa/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 15:14:17,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:14:17,632 INFO L262 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-02 15:14:17,642 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:14:17,920 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 15:14:17,920 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:14:17,921 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:14:17,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [456907108] [2023-12-02 15:14:17,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [456907108] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:14:17,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:14:17,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 15:14:17,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414920797] [2023-12-02 15:14:17,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:14:17,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 15:14:17,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:14:17,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 15:14:17,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 15:14:17,960 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 15:14:18,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:14:18,279 INFO L93 Difference]: Finished difference Result 16 states and 24 transitions. [2023-12-02 15:14:18,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 15:14:18,282 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 15:14:18,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:14:18,290 INFO L225 Difference]: With dead ends: 16 [2023-12-02 15:14:18,290 INFO L226 Difference]: Without dead ends: 9 [2023-12-02 15:14:18,292 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 15:14:18,297 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 3 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 15:14:18,298 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 6 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 15:14:18,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2023-12-02 15:14:18,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 8. [2023-12-02 15:14:18,329 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 15:14:18,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2023-12-02 15:14:18,331 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 4 [2023-12-02 15:14:18,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:14:18,332 INFO L495 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2023-12-02 15:14:18,332 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 15:14:18,332 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2023-12-02 15:14:18,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-12-02 15:14:18,333 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:14:18,333 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2023-12-02 15:14:18,337 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c441ca-c24f-43c8-ade6-0627f728d8fa/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 15:14:18,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c441ca-c24f-43c8-ade6-0627f728d8fa/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 15:14:18,538 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:14:18,538 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:14:18,538 INFO L85 PathProgramCache]: Analyzing trace with hash -1393329571, now seen corresponding path program 1 times [2023-12-02 15:14:18,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:14:18,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1957917222] [2023-12-02 15:14:18,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:14:18,542 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 15:14:18,542 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c441ca-c24f-43c8-ade6-0627f728d8fa/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:14:18,544 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c441ca-c24f-43c8-ade6-0627f728d8fa/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 15:14:18,544 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c441ca-c24f-43c8-ade6-0627f728d8fa/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 15:14:20,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:14:20,256 INFO L262 TraceCheckSpWp]: Trace formula consists of 1103 conjuncts, 39 conjunts are in the unsatisfiable core [2023-12-02 15:14:20,269 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:14:20,537 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 15:14:20,537 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:14:21,109 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 15:14:21,109 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:14:21,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1957917222] [2023-12-02 15:14:21,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1957917222] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:14:21,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1399812509] [2023-12-02 15:14:21,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:14:21,110 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 15:14:21,111 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c441ca-c24f-43c8-ade6-0627f728d8fa/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 15:14:21,112 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c441ca-c24f-43c8-ade6-0627f728d8fa/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 15:14:21,117 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c441ca-c24f-43c8-ade6-0627f728d8fa/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2023-12-02 15:14:22,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:14:22,331 INFO L262 TraceCheckSpWp]: Trace formula consists of 1103 conjuncts, 50 conjunts are in the unsatisfiable core [2023-12-02 15:14:22,345 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:14:22,654 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 15:14:22,655 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:14:23,846 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 15:14:23,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1399812509] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:14:23,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [591254866] [2023-12-02 15:14:23,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:14:23,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:14:23,848 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c441ca-c24f-43c8-ade6-0627f728d8fa/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:14:23,851 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c441ca-c24f-43c8-ade6-0627f728d8fa/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:14:23,856 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c441ca-c24f-43c8-ade6-0627f728d8fa/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-02 15:14:24,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:14:24,421 INFO L262 TraceCheckSpWp]: Trace formula consists of 1103 conjuncts, 44 conjunts are in the unsatisfiable core [2023-12-02 15:14:24,437 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:14:24,685 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 15:14:24,685 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:14:25,193 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 15:14:25,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [591254866] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:14:25,194 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-12-02 15:14:25,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 4, 5, 5] total 10 [2023-12-02 15:14:25,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617699237] [2023-12-02 15:14:25,195 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-12-02 15:14:25,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-02 15:14:25,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:14:25,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-02 15:14:25,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2023-12-02 15:14:25,198 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 10 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 15:14:25,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:14:25,497 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2023-12-02 15:14:25,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 15:14:25,498 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 10 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 15:14:25,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:14:25,498 INFO L225 Difference]: With dead ends: 14 [2023-12-02 15:14:25,498 INFO L226 Difference]: Without dead ends: 12 [2023-12-02 15:14:25,499 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 23 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2023-12-02 15:14:25,500 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 8 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 15:14:25,501 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 9 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 15:14:25,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2023-12-02 15:14:25,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 11. [2023-12-02 15:14:25,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 15:14:25,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2023-12-02 15:14:25,505 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 7 [2023-12-02 15:14:25,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:14:25,505 INFO L495 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2023-12-02 15:14:25,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 10 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 15:14:25,506 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2023-12-02 15:14:25,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-12-02 15:14:25,506 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:14:25,507 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1] [2023-12-02 15:14:25,516 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c441ca-c24f-43c8-ade6-0627f728d8fa/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)] Ended with exit code 0 [2023-12-02 15:14:25,715 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c441ca-c24f-43c8-ade6-0627f728d8fa/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-02 15:14:25,915 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c441ca-c24f-43c8-ade6-0627f728d8fa/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (4)] Ended with exit code 0 [2023-12-02 15:14:26,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c441ca-c24f-43c8-ade6-0627f728d8fa/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_21c441ca-c24f-43c8-ade6-0627f728d8fa/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c441ca-c24f-43c8-ade6-0627f728d8fa/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt [2023-12-02 15:14:26,109 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:14:26,109 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:14:26,109 INFO L85 PathProgramCache]: Analyzing trace with hash -2112524529, now seen corresponding path program 2 times [2023-12-02 15:14:26,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:14:26,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [919370004] [2023-12-02 15:14:26,115 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 15:14:26,115 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 15:14:26,115 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c441ca-c24f-43c8-ade6-0627f728d8fa/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:14:26,117 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c441ca-c24f-43c8-ade6-0627f728d8fa/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 15:14:26,118 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c441ca-c24f-43c8-ade6-0627f728d8fa/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 15:14:30,737 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-02 15:14:30,737 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 15:14:30,782 INFO L262 TraceCheckSpWp]: Trace formula consists of 2079 conjuncts, 69 conjunts are in the unsatisfiable core [2023-12-02 15:14:30,801 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:14:31,221 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 15:14:31,221 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:14:36,924 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 15:14:36,924 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:14:36,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [919370004] [2023-12-02 15:14:36,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [919370004] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:14:36,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1578019245] [2023-12-02 15:14:36,925 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 15:14:36,925 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 15:14:36,925 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c441ca-c24f-43c8-ade6-0627f728d8fa/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 15:14:36,926 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c441ca-c24f-43c8-ade6-0627f728d8fa/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 15:14:36,927 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c441ca-c24f-43c8-ade6-0627f728d8fa/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2023-12-02 15:14:38,726 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-02 15:14:38,726 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 15:14:38,819 INFO L262 TraceCheckSpWp]: Trace formula consists of 2079 conjuncts, 83 conjunts are in the unsatisfiable core [2023-12-02 15:14:38,835 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:14:39,227 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 15:14:39,227 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:14:44,331 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 15:14:44,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1578019245] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:14:44,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1448580903] [2023-12-02 15:14:44,332 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 15:14:44,332 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:14:44,332 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c441ca-c24f-43c8-ade6-0627f728d8fa/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:14:44,333 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c441ca-c24f-43c8-ade6-0627f728d8fa/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:14:44,334 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c441ca-c24f-43c8-ade6-0627f728d8fa/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-02 15:14:44,925 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-02 15:14:44,926 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 15:14:44,941 INFO L262 TraceCheckSpWp]: Trace formula consists of 2079 conjuncts, 75 conjunts are in the unsatisfiable core [2023-12-02 15:14:44,954 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:14:45,212 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 15:14:45,212 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:14:50,644 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 15:14:50,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1448580903] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:14:50,644 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-12-02 15:14:50,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 10 [2023-12-02 15:14:50,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755834320] [2023-12-02 15:14:50,645 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-12-02 15:14:50,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-02 15:14:50,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:14:50,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-02 15:14:50,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-12-02 15:14:50,646 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 10 states have internal predecessors, (23), 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 15:14:51,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:14:51,139 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2023-12-02 15:14:51,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-02 15:14:51,139 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 10 states have internal predecessors, (23), 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 10 [2023-12-02 15:14:51,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:14:51,140 INFO L225 Difference]: With dead ends: 17 [2023-12-02 15:14:51,140 INFO L226 Difference]: Without dead ends: 15 [2023-12-02 15:14:51,140 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 39 SyntacticMatches, 6 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2023-12-02 15:14:51,141 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 12 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 15:14:51,141 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 17 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 15:14:51,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2023-12-02 15:14:51,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14. [2023-12-02 15:14:51,144 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 15:14:51,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2023-12-02 15:14:51,144 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 10 [2023-12-02 15:14:51,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:14:51,145 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2023-12-02 15:14:51,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 10 states have internal predecessors, (23), 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 15:14:51,145 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2023-12-02 15:14:51,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-12-02 15:14:51,146 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:14:51,146 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1] [2023-12-02 15:14:51,157 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c441ca-c24f-43c8-ade6-0627f728d8fa/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 15:14:51,354 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c441ca-c24f-43c8-ade6-0627f728d8fa/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-12-02 15:14:51,556 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c441ca-c24f-43c8-ade6-0627f728d8fa/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (7)] Ended with exit code 0 [2023-12-02 15:14:51,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c441ca-c24f-43c8-ade6-0627f728d8fa/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=3,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c441ca-c24f-43c8-ade6-0627f728d8fa/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c441ca-c24f-43c8-ade6-0627f728d8fa/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt [2023-12-02 15:14:51,747 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:14:51,747 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:14:51,747 INFO L85 PathProgramCache]: Analyzing trace with hash -57678563, now seen corresponding path program 3 times [2023-12-02 15:14:51,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:14:51,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2101343232] [2023-12-02 15:14:51,750 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 15:14:51,750 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 15:14:51,750 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c441ca-c24f-43c8-ade6-0627f728d8fa/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:14:51,751 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c441ca-c24f-43c8-ade6-0627f728d8fa/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 15:14:51,752 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c441ca-c24f-43c8-ade6-0627f728d8fa/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 (9)] Waiting until timeout for monitored process [2023-12-02 15:14:57,980 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-12-02 15:14:57,980 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 15:14:58,042 INFO L262 TraceCheckSpWp]: Trace formula consists of 3055 conjuncts, 125 conjunts are in the unsatisfiable core [2023-12-02 15:14:58,058 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:14:58,925 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 15:14:58,925 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:15:36,977 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 15:15:36,978 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:15:36,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2101343232] [2023-12-02 15:15:36,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2101343232] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:15:36,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [256584925] [2023-12-02 15:15:36,978 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 15:15:36,978 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 15:15:36,978 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c441ca-c24f-43c8-ade6-0627f728d8fa/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 15:15:36,979 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c441ca-c24f-43c8-ade6-0627f728d8fa/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 15:15:36,981 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c441ca-c24f-43c8-ade6-0627f728d8fa/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2023-12-02 15:15:39,902 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-12-02 15:15:39,902 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 15:15:40,038 INFO L262 TraceCheckSpWp]: Trace formula consists of 3055 conjuncts, 178 conjunts are in the unsatisfiable core [2023-12-02 15:15:40,056 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:15:41,653 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 15:15:41,653 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:16:28,315 WARN L293 SmtUtils]: Spent 13.62s on a formula simplification that was a NOOP. DAG size: 665 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 15:22:34,309 WARN L293 SmtUtils]: Spent 7.54s on a formula simplification. DAG size of input: 808 DAG size of output: 805 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)