./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_traffic_light_example.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9013f3-6694-4bae-93d1-c4957324329b/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9013f3-6694-4bae-93d1-c4957324329b/bin/utaipan-verify-sOmjnqqW8E/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9013f3-6694-4bae-93d1-c4957324329b/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9013f3-6694-4bae-93d1-c4957324329b/bin/utaipan-verify-sOmjnqqW8E/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_traffic_light_example.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9013f3-6694-4bae-93d1-c4957324329b/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9013f3-6694-4bae-93d1-c4957324329b/bin/utaipan-verify-sOmjnqqW8E --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 54eceae7382bc15f3f6868c637e60b7eb166af5d1c4b040a6f157b03b87c995c --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-14 05:16:48,612 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-14 05:16:48,681 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9013f3-6694-4bae-93d1-c4957324329b/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-64bit-Taipan_Default.epf [2024-11-14 05:16:48,690 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-14 05:16:48,691 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-14 05:16:48,728 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-14 05:16:48,729 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-14 05:16:48,729 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-14 05:16:48,729 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-14 05:16:48,730 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-14 05:16:48,730 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-14 05:16:48,730 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-14 05:16:48,730 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-14 05:16:48,730 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-14 05:16:48,730 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-14 05:16:48,731 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-14 05:16:48,731 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-14 05:16:48,731 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-14 05:16:48,731 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-14 05:16:48,731 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-14 05:16:48,732 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-14 05:16:48,732 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-14 05:16:48,732 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-14 05:16:48,732 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-14 05:16:48,733 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-14 05:16:48,733 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-14 05:16:48,733 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-14 05:16:48,733 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-14 05:16:48,733 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-14 05:16:48,733 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-14 05:16:48,733 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-14 05:16:48,733 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-14 05:16:48,734 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-14 05:16:48,734 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-14 05:16:48,734 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-14 05:16:48,734 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 05:16:48,734 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-14 05:16:48,734 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-14 05:16:48,734 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-14 05:16:48,734 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-14 05:16:48,734 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-14 05:16:48,734 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-14 05:16:48,734 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-14 05:16:48,735 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-14 05:16:48,735 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_fe9013f3-6694-4bae-93d1-c4957324329b/bin/utaipan-verify-sOmjnqqW8E 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 -> 54eceae7382bc15f3f6868c637e60b7eb166af5d1c4b040a6f157b03b87c995c [2024-11-14 05:16:49,082 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-14 05:16:49,091 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-14 05:16:49,094 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-14 05:16:49,095 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-14 05:16:49,096 INFO L274 PluginConnector]: CDTParser initialized [2024-11-14 05:16:49,098 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9013f3-6694-4bae-93d1-c4957324329b/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_traffic_light_example.c Unable to find full path for "g++" [2024-11-14 05:16:51,066 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-14 05:16:51,330 INFO L384 CDTParser]: Found 1 translation units. [2024-11-14 05:16:51,330 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9013f3-6694-4bae-93d1-c4957324329b/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_traffic_light_example.c [2024-11-14 05:16:51,340 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9013f3-6694-4bae-93d1-c4957324329b/bin/utaipan-verify-sOmjnqqW8E/data/d6924b382/f172f4a993554b19977a21f444a59495/FLAG7f96dc426 [2024-11-14 05:16:51,623 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9013f3-6694-4bae-93d1-c4957324329b/bin/utaipan-verify-sOmjnqqW8E/data/d6924b382/f172f4a993554b19977a21f444a59495 [2024-11-14 05:16:51,625 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-14 05:16:51,627 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-14 05:16:51,628 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-14 05:16:51,629 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-14 05:16:51,633 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-14 05:16:51,634 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 05:16:51" (1/1) ... [2024-11-14 05:16:51,635 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a7f09a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:16:51, skipping insertion in model container [2024-11-14 05:16:51,636 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 05:16:51" (1/1) ... [2024-11-14 05:16:51,656 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-14 05:16:51,833 WARN L250 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_fe9013f3-6694-4bae-93d1-c4957324329b/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_traffic_light_example.c[1263,1276] [2024-11-14 05:16:51,918 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 05:16:51,928 INFO L200 MainTranslator]: Completed pre-run [2024-11-14 05:16:51,938 WARN L250 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_fe9013f3-6694-4bae-93d1-c4957324329b/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_traffic_light_example.c[1263,1276] [2024-11-14 05:16:52,011 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 05:16:52,038 INFO L204 MainTranslator]: Completed translation [2024-11-14 05:16:52,038 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:16:52 WrapperNode [2024-11-14 05:16:52,039 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-14 05:16:52,040 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-14 05:16:52,040 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-14 05:16:52,040 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-14 05:16:52,048 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:16:52" (1/1) ... [2024-11-14 05:16:52,065 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:16:52" (1/1) ... [2024-11-14 05:16:52,145 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 277 [2024-11-14 05:16:52,145 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-14 05:16:52,146 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-14 05:16:52,146 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-14 05:16:52,146 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-14 05:16:52,159 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:16:52" (1/1) ... [2024-11-14 05:16:52,159 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:16:52" (1/1) ... [2024-11-14 05:16:52,168 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:16:52" (1/1) ... [2024-11-14 05:16:52,169 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:16:52" (1/1) ... [2024-11-14 05:16:52,198 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:16:52" (1/1) ... [2024-11-14 05:16:52,206 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:16:52" (1/1) ... [2024-11-14 05:16:52,215 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:16:52" (1/1) ... [2024-11-14 05:16:52,217 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:16:52" (1/1) ... [2024-11-14 05:16:52,224 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-14 05:16:52,226 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-14 05:16:52,226 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-14 05:16:52,226 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-14 05:16:52,227 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:16:52" (1/1) ... [2024-11-14 05:16:52,234 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 05:16:52,251 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9013f3-6694-4bae-93d1-c4957324329b/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:16:52,267 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9013f3-6694-4bae-93d1-c4957324329b/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-14 05:16:52,271 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9013f3-6694-4bae-93d1-c4957324329b/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-14 05:16:52,303 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-14 05:16:52,303 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-14 05:16:52,304 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-14 05:16:52,304 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-14 05:16:52,460 INFO L238 CfgBuilder]: Building ICFG [2024-11-14 05:16:52,462 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-14 05:16:53,206 INFO L? ?]: Removed 176 outVars from TransFormulas that were not future-live. [2024-11-14 05:16:53,206 INFO L287 CfgBuilder]: Performing block encoding [2024-11-14 05:16:53,554 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-14 05:16:53,555 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-14 05:16:53,555 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 05:16:53 BoogieIcfgContainer [2024-11-14 05:16:53,555 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-14 05:16:53,558 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-14 05:16:53,558 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-14 05:16:53,563 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-14 05:16:53,564 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.11 05:16:51" (1/3) ... [2024-11-14 05:16:53,564 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7334ae8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 05:16:53, skipping insertion in model container [2024-11-14 05:16:53,564 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:16:52" (2/3) ... [2024-11-14 05:16:53,565 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7334ae8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 05:16:53, skipping insertion in model container [2024-11-14 05:16:53,565 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 05:16:53" (3/3) ... [2024-11-14 05:16:53,568 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.h_traffic_light_example.c [2024-11-14 05:16:53,585 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-14 05:16:53,587 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG btor2c-lazyMod.h_traffic_light_example.c that has 1 procedures, 7 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-14 05:16:53,645 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-14 05:16:53,660 INFO L333 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, 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;@cd21b5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-14 05:16:53,661 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-14 05:16:53,665 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) [2024-11-14 05:16:53,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-14 05:16:53,712 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:16:53,712 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-14 05:16:53,712 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:16:53,719 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:16:53,719 INFO L85 PathProgramCache]: Analyzing trace with hash 7703824, now seen corresponding path program 1 times [2024-11-14 05:16:53,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:16:53,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706685165] [2024-11-14 05:16:53,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:16:53,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:16:53,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-14 05:16:53,915 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-14 05:16:54,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-14 05:16:54,053 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2024-11-14 05:16:54,055 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-14 05:16:54,056 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-14 05:16:54,059 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-14 05:16:54,065 INFO L407 BasicCegarLoop]: Path program histogram: [1] [2024-11-14 05:16:54,094 INFO L173 ceAbstractionStarter]: Computing trace abstraction results [2024-11-14 05:16:54,103 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.11 05:16:54 BoogieIcfgContainer [2024-11-14 05:16:54,103 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-14 05:16:54,103 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-14 05:16:54,104 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-14 05:16:54,104 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-14 05:16:54,104 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 05:16:53" (3/4) ... [2024-11-14 05:16:54,107 INFO L145 WitnessPrinter]: No result that supports witness generation found [2024-11-14 05:16:54,108 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-14 05:16:54,109 INFO L158 Benchmark]: Toolchain (without parser) took 2482.30ms. Allocated memory is still 117.4MB. Free memory was 92.4MB in the beginning and 71.2MB in the end (delta: 21.2MB). Peak memory consumption was 18.5MB. Max. memory is 16.1GB. [2024-11-14 05:16:54,110 INFO L158 Benchmark]: CDTParser took 0.51ms. Allocated memory is still 117.4MB. Free memory is still 72.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 05:16:54,110 INFO L158 Benchmark]: CACSL2BoogieTranslator took 410.81ms. Allocated memory is still 117.4MB. Free memory was 92.2MB in the beginning and 76.6MB in the end (delta: 15.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-14 05:16:54,110 INFO L158 Benchmark]: Boogie Procedure Inliner took 105.80ms. Allocated memory is still 117.4MB. Free memory was 76.6MB in the beginning and 71.0MB in the end (delta: 5.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-14 05:16:54,111 INFO L158 Benchmark]: Boogie Preprocessor took 78.66ms. Allocated memory is still 117.4MB. Free memory was 70.8MB in the beginning and 68.7MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 05:16:54,111 INFO L158 Benchmark]: RCFGBuilder took 1329.56ms. Allocated memory is still 117.4MB. Free memory was 68.5MB in the beginning and 37.5MB in the end (delta: 31.0MB). Peak memory consumption was 39.5MB. Max. memory is 16.1GB. [2024-11-14 05:16:54,111 INFO L158 Benchmark]: TraceAbstraction took 545.18ms. Allocated memory is still 117.4MB. Free memory was 36.9MB in the beginning and 71.2MB in the end (delta: -34.2MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 05:16:54,112 INFO L158 Benchmark]: Witness Printer took 4.61ms. Allocated memory is still 117.4MB. Free memory is still 71.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 05:16:54,114 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.51ms. Allocated memory is still 117.4MB. Free memory is still 72.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 410.81ms. Allocated memory is still 117.4MB. Free memory was 92.2MB in the beginning and 76.6MB in the end (delta: 15.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 105.80ms. Allocated memory is still 117.4MB. Free memory was 76.6MB in the beginning and 71.0MB in the end (delta: 5.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 78.66ms. Allocated memory is still 117.4MB. Free memory was 70.8MB in the beginning and 68.7MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 1329.56ms. Allocated memory is still 117.4MB. Free memory was 68.5MB in the beginning and 37.5MB in the end (delta: 31.0MB). Peak memory consumption was 39.5MB. Max. memory is 16.1GB. * TraceAbstraction took 545.18ms. Allocated memory is still 117.4MB. Free memory was 36.9MB in the beginning and 71.2MB in the end (delta: -34.2MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 4.61ms. Allocated memory is still 117.4MB. Free memory is still 71.2MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 21]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: overapproximation of bitwiseAnd at line 54, overapproximation of bitwiseAnd at line 65. Possible FailurePath: [L26] const SORT_1 mask_SORT_1 = (SORT_1)-1 >> (sizeof(SORT_1) * 8 - 1); [L27] const SORT_1 msb_SORT_1 = (SORT_1)1 << (1 - 1); [L29] const SORT_4 mask_SORT_4 = (SORT_4)-1 >> (sizeof(SORT_4) * 8 - 8); [L30] const SORT_4 msb_SORT_4 = (SORT_4)1 << (8 - 1); [L32] const SORT_16 mask_SORT_16 = (SORT_16)-1 >> (sizeof(SORT_16) * 8 - 2); [L33] const SORT_16 msb_SORT_16 = (SORT_16)1 << (2 - 1); [L35] const SORT_44 mask_SORT_44 = (SORT_44)-1 >> (sizeof(SORT_44) * 8 - 32); [L36] const SORT_44 msb_SORT_44 = (SORT_44)1 << (32 - 1); [L38] const SORT_4 var_5 = 0; [L39] const SORT_4 var_8 = 255; [L40] const SORT_1 var_12 = 1; [L41] const SORT_16 var_17 = 0; [L42] const SORT_4 var_21 = 1; [L43] const SORT_4 var_23 = 63; [L44] const SORT_4 var_29 = 7; [L45] const SORT_16 var_35 = 2; [L46] const SORT_16 var_38 = 1; [L47] const SORT_44 var_45 = 0; [L48] const SORT_44 var_46 = 1; [L49] const SORT_44 var_52 = 2; [L51] SORT_1 input_2; [L52] SORT_1 input_3; [L54] EXPR __VERIFIER_nondet_uchar() & mask_SORT_4 [L54] SORT_4 state_6 = __VERIFIER_nondet_uchar() & mask_SORT_4; [L55] EXPR __VERIFIER_nondet_uchar() & mask_SORT_16 [L55] SORT_16 state_18 = __VERIFIER_nondet_uchar() & mask_SORT_16; [L57] SORT_4 init_7_arg_1 = var_5; [L58] state_6 = init_7_arg_1 [L59] SORT_16 init_19_arg_1 = var_17; [L60] state_18 = init_19_arg_1 VAL [mask_SORT_16=3, mask_SORT_1=1, mask_SORT_4=255, state_18=0, state_6=0, var_12=1, var_17=0, var_21=1, var_23=63, var_29=7, var_35=2, var_38=1, var_45=0, var_46=1, var_52=2, var_5=0, var_8=255] [L63] input_2 = __VERIFIER_nondet_uchar() [L64] input_3 = __VERIFIER_nondet_uchar() [L65] EXPR input_3 & mask_SORT_1 [L65] input_3 = input_3 & mask_SORT_1 [L68] SORT_4 var_9_arg_0 = state_6; [L69] SORT_4 var_9_arg_1 = var_8; [L70] SORT_1 var_9 = var_9_arg_0 != var_9_arg_1; [L71] SORT_1 var_13_arg_0 = var_9; [L72] SORT_1 var_13 = ~var_13_arg_0; [L73] SORT_1 var_14_arg_0 = var_12; [L74] SORT_1 var_14_arg_1 = var_13; [L75] EXPR var_14_arg_0 & var_14_arg_1 [L75] SORT_1 var_14 = var_14_arg_0 & var_14_arg_1; [L76] EXPR var_14 & mask_SORT_1 [L76] var_14 = var_14 & mask_SORT_1 [L77] SORT_1 bad_15_arg_0 = var_14; [L78] CALL __VERIFIER_assert(!(bad_15_arg_0)) [L21] COND TRUE !(cond) [L21] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2024-11-14 05:16:54,138 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9013f3-6694-4bae-93d1-c4957324329b/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9013f3-6694-4bae-93d1-c4957324329b/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9013f3-6694-4bae-93d1-c4957324329b/bin/utaipan-verify-sOmjnqqW8E/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9013f3-6694-4bae-93d1-c4957324329b/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9013f3-6694-4bae-93d1-c4957324329b/bin/utaipan-verify-sOmjnqqW8E/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_traffic_light_example.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9013f3-6694-4bae-93d1-c4957324329b/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9013f3-6694-4bae-93d1-c4957324329b/bin/utaipan-verify-sOmjnqqW8E --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 54eceae7382bc15f3f6868c637e60b7eb166af5d1c4b040a6f157b03b87c995c --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-14 05:16:57,024 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-14 05:16:57,153 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9013f3-6694-4bae-93d1-c4957324329b/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2024-11-14 05:16:57,168 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-14 05:16:57,168 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-14 05:16:57,212 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-14 05:16:57,213 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-14 05:16:57,215 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-14 05:16:57,215 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-14 05:16:57,215 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-14 05:16:57,215 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-14 05:16:57,216 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-14 05:16:57,216 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-14 05:16:57,217 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-14 05:16:57,217 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-14 05:16:57,217 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-14 05:16:57,217 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-14 05:16:57,219 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-14 05:16:57,219 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-14 05:16:57,220 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-14 05:16:57,220 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-14 05:16:57,220 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-14 05:16:57,220 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-14 05:16:57,220 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-14 05:16:57,220 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-14 05:16:57,220 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-14 05:16:57,220 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-14 05:16:57,221 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-14 05:16:57,221 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-14 05:16:57,221 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-14 05:16:57,221 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-14 05:16:57,221 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-14 05:16:57,221 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 05:16:57,221 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-14 05:16:57,221 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-14 05:16:57,221 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-14 05:16:57,222 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2024-11-14 05:16:57,222 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-14 05:16:57,222 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-14 05:16:57,222 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-14 05:16:57,222 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_fe9013f3-6694-4bae-93d1-c4957324329b/bin/utaipan-verify-sOmjnqqW8E 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 -> 54eceae7382bc15f3f6868c637e60b7eb166af5d1c4b040a6f157b03b87c995c [2024-11-14 05:16:57,579 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-14 05:16:57,590 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-14 05:16:57,593 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-14 05:16:57,594 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-14 05:16:57,595 INFO L274 PluginConnector]: CDTParser initialized [2024-11-14 05:16:57,596 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9013f3-6694-4bae-93d1-c4957324329b/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_traffic_light_example.c Unable to find full path for "g++" [2024-11-14 05:16:59,599 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-14 05:16:59,921 INFO L384 CDTParser]: Found 1 translation units. [2024-11-14 05:16:59,924 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9013f3-6694-4bae-93d1-c4957324329b/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_traffic_light_example.c [2024-11-14 05:16:59,942 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9013f3-6694-4bae-93d1-c4957324329b/bin/utaipan-verify-sOmjnqqW8E/data/7ce1d8b14/0ba27fa0dc6a4bf4b2ac7f0a87d76065/FLAG300e29106 [2024-11-14 05:16:59,967 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9013f3-6694-4bae-93d1-c4957324329b/bin/utaipan-verify-sOmjnqqW8E/data/7ce1d8b14/0ba27fa0dc6a4bf4b2ac7f0a87d76065 [2024-11-14 05:16:59,971 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-14 05:16:59,973 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-14 05:16:59,975 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-14 05:16:59,975 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-14 05:16:59,980 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-14 05:16:59,982 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 05:16:59" (1/1) ... [2024-11-14 05:16:59,983 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11654f9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:16:59, skipping insertion in model container [2024-11-14 05:16:59,984 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 05:16:59" (1/1) ... [2024-11-14 05:17:00,009 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-14 05:17:00,204 WARN L250 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_fe9013f3-6694-4bae-93d1-c4957324329b/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_traffic_light_example.c[1263,1276] [2024-11-14 05:17:00,320 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 05:17:00,339 INFO L200 MainTranslator]: Completed pre-run [2024-11-14 05:17:00,351 WARN L250 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_fe9013f3-6694-4bae-93d1-c4957324329b/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_traffic_light_example.c[1263,1276] [2024-11-14 05:17:00,407 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 05:17:00,431 INFO L204 MainTranslator]: Completed translation [2024-11-14 05:17:00,431 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:17:00 WrapperNode [2024-11-14 05:17:00,432 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-14 05:17:00,433 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-14 05:17:00,433 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-14 05:17:00,434 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-14 05:17:00,442 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:17:00" (1/1) ... [2024-11-14 05:17:00,456 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:17:00" (1/1) ... [2024-11-14 05:17:00,497 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 189 [2024-11-14 05:17:00,500 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-14 05:17:00,500 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-14 05:17:00,501 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-14 05:17:00,501 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-14 05:17:00,510 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:17:00" (1/1) ... [2024-11-14 05:17:00,511 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:17:00" (1/1) ... [2024-11-14 05:17:00,520 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:17:00" (1/1) ... [2024-11-14 05:17:00,520 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:17:00" (1/1) ... [2024-11-14 05:17:00,536 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:17:00" (1/1) ... [2024-11-14 05:17:00,543 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:17:00" (1/1) ... [2024-11-14 05:17:00,551 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:17:00" (1/1) ... [2024-11-14 05:17:00,552 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:17:00" (1/1) ... [2024-11-14 05:17:00,559 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-14 05:17:00,560 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-14 05:17:00,563 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-14 05:17:00,563 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-14 05:17:00,564 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:17:00" (1/1) ... [2024-11-14 05:17:00,579 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 05:17:00,600 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9013f3-6694-4bae-93d1-c4957324329b/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:17:00,614 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9013f3-6694-4bae-93d1-c4957324329b/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-14 05:17:00,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9013f3-6694-4bae-93d1-c4957324329b/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-14 05:17:00,655 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-14 05:17:00,656 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2024-11-14 05:17:00,656 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-14 05:17:00,658 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-14 05:17:00,842 INFO L238 CfgBuilder]: Building ICFG [2024-11-14 05:17:00,844 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-14 05:17:01,211 INFO L? ?]: Removed 22 outVars from TransFormulas that were not future-live. [2024-11-14 05:17:01,211 INFO L287 CfgBuilder]: Performing block encoding [2024-11-14 05:17:01,226 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-14 05:17:01,226 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-14 05:17:01,227 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 05:17:01 BoogieIcfgContainer [2024-11-14 05:17:01,227 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-14 05:17:01,231 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-14 05:17:01,231 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-14 05:17:01,241 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-14 05:17:01,242 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.11 05:16:59" (1/3) ... [2024-11-14 05:17:01,242 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e6d985b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 05:17:01, skipping insertion in model container [2024-11-14 05:17:01,243 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:17:00" (2/3) ... [2024-11-14 05:17:01,243 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e6d985b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 05:17:01, skipping insertion in model container [2024-11-14 05:17:01,243 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 05:17:01" (3/3) ... [2024-11-14 05:17:01,245 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.h_traffic_light_example.c [2024-11-14 05:17:01,266 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-14 05:17:01,269 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG btor2c-lazyMod.h_traffic_light_example.c that has 1 procedures, 10 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-14 05:17:01,340 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-14 05:17:01,355 INFO L333 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, 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;@72ca1b4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-14 05:17:01,356 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-14 05:17:01,360 INFO L276 IsEmpty]: Start isEmpty. Operand has 10 states, 8 states have (on average 1.375) internal successors, (11), 9 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) [2024-11-14 05:17:01,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-11-14 05:17:01,366 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:17:01,367 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-11-14 05:17:01,367 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:17:01,372 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:17:01,373 INFO L85 PathProgramCache]: Analyzing trace with hash 28694789, now seen corresponding path program 1 times [2024-11-14 05:17:01,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:17:01,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1884439605] [2024-11-14 05:17:01,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:17:01,386 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 [2024-11-14 05:17:01,386 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9013f3-6694-4bae-93d1-c4957324329b/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:17:01,390 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9013f3-6694-4bae-93d1-c4957324329b/bin/utaipan-verify-sOmjnqqW8E/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) [2024-11-14 05:17:01,392 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9013f3-6694-4bae-93d1-c4957324329b/bin/utaipan-verify-sOmjnqqW8E/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 [2024-11-14 05:17:01,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:17:01,538 INFO L255 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-14 05:17:01,548 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:17:01,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:17:01,911 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 05:17:01,911 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:17:01,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1884439605] [2024-11-14 05:17:01,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1884439605] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:17:01,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:17:01,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-14 05:17:01,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097829561] [2024-11-14 05:17:01,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:17:01,922 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 05:17:01,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:17:01,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 05:17:01,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 05:17:01,954 INFO L87 Difference]: Start difference. First operand has 10 states, 8 states have (on average 1.375) internal successors, (11), 9 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) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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) [2024-11-14 05:17:02,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:17:02,060 INFO L93 Difference]: Finished difference Result 18 states and 23 transitions. [2024-11-14 05:17:02,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 05:17:02,063 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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 5 [2024-11-14 05:17:02,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:17:02,072 INFO L225 Difference]: With dead ends: 18 [2024-11-14 05:17:02,072 INFO L226 Difference]: Without dead ends: 10 [2024-11-14 05:17:02,075 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-14 05:17:02,080 INFO L432 NwaCegarLoop]: 4 mSDtfsCounter, 2 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-14 05:17:02,081 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 11 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-14 05:17:02,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2024-11-14 05:17:02,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2024-11-14 05:17:02,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 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) [2024-11-14 05:17:02,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2024-11-14 05:17:02,125 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2024-11-14 05:17:02,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:17:02,126 INFO L471 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2024-11-14 05:17:02,126 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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) [2024-11-14 05:17:02,126 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2024-11-14 05:17:02,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-14 05:17:02,127 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:17:02,127 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2024-11-14 05:17:02,133 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9013f3-6694-4bae-93d1-c4957324329b/bin/utaipan-verify-sOmjnqqW8E/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 [2024-11-14 05:17:02,328 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9013f3-6694-4bae-93d1-c4957324329b/bin/utaipan-verify-sOmjnqqW8E/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 [2024-11-14 05:17:02,328 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:17:02,329 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:17:02,329 INFO L85 PathProgramCache]: Analyzing trace with hash 152739811, now seen corresponding path program 1 times [2024-11-14 05:17:02,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:17:02,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1495161093] [2024-11-14 05:17:02,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:17:02,331 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 [2024-11-14 05:17:02,331 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9013f3-6694-4bae-93d1-c4957324329b/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:17:02,340 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9013f3-6694-4bae-93d1-c4957324329b/bin/utaipan-verify-sOmjnqqW8E/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) [2024-11-14 05:17:02,344 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9013f3-6694-4bae-93d1-c4957324329b/bin/utaipan-verify-sOmjnqqW8E/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 [2024-11-14 05:17:02,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:17:02,512 INFO L255 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-14 05:17:02,520 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:17:03,648 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:17:03,650 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:17:19,604 WARN L286 SmtUtils]: Spent 6.51s on a formula simplification that was a NOOP. DAG size: 280 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 05:17:34,972 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:17:34,972 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:17:34,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1495161093] [2024-11-14 05:17:34,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1495161093] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:17:34,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1776431822] [2024-11-14 05:17:34,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:17:34,973 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 05:17:34,974 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9013f3-6694-4bae-93d1-c4957324329b/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 05:17:34,981 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9013f3-6694-4bae-93d1-c4957324329b/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 05:17:34,985 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9013f3-6694-4bae-93d1-c4957324329b/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2024-11-14 05:17:35,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:17:35,158 INFO L255 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-14 05:17:35,163 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:17:36,432 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:17:36,433 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:18:03,189 WARN L286 SmtUtils]: Spent 8.77s on a formula simplification that was a NOOP. DAG size: 242 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 05:18:22,948 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:18:22,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1776431822] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:18:22,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1331566917] [2024-11-14 05:18:22,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:18:22,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:18:22,949 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9013f3-6694-4bae-93d1-c4957324329b/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:18:22,952 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9013f3-6694-4bae-93d1-c4957324329b/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:18:22,954 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9013f3-6694-4bae-93d1-c4957324329b/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-14 05:18:23,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:18:23,051 INFO L255 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-14 05:18:23,055 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:18:26,134 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:18:26,134 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:18:49,009 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse36 ((_ zero_extend 24) |c_ULTIMATE.start_main_~state_18~0#1|)) (.cse47 ((_ zero_extend 24) |c_ULTIMATE.start_main_~state_6~0#1|)) (.cse24 ((_ zero_extend 24) |c_ULTIMATE.start_main_~var_8~0#1|))) (let ((.cse46 (forall ((|ULTIMATE.start_main_~var_21~0#1| (_ BitVec 8)) (|ULTIMATE.start_main_~mask_SORT_4~0#1| (_ BitVec 8))) (not (= ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) |ULTIMATE.start_main_~mask_SORT_4~0#1|) ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvadd .cse47 (bvneg ((_ zero_extend 24) |ULTIMATE.start_main_~var_21~0#1|)))))))))))))))) .cse24)))) (.cse45 (forall ((|ULTIMATE.start_main_~var_21~0#1| (_ BitVec 8)) (|ULTIMATE.start_main_~mask_SORT_4~0#1| (_ BitVec 8))) (= ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) |ULTIMATE.start_main_~mask_SORT_4~0#1|) ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvadd .cse47 (bvneg ((_ zero_extend 24) |ULTIMATE.start_main_~var_21~0#1|)))))))))))))))) .cse24))) (.cse32 (forall ((|ULTIMATE.start_main_~var_35~0#1| (_ BitVec 8))) (not (= .cse36 ((_ zero_extend 24) |ULTIMATE.start_main_~var_35~0#1|)))))) (let ((.cse43 ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) .cse47))))))) (.cse44 ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) |c_ULTIMATE.start_main_~var_23~0#1|)))))))))) (.cse28 (or .cse45 .cse32)) (.cse17 (forall ((|ULTIMATE.start_main_~var_35~0#1| (_ BitVec 8))) (= .cse36 ((_ zero_extend 24) |ULTIMATE.start_main_~var_35~0#1|)))) (.cse29 (or .cse46 .cse32)) (.cse41 ((_ zero_extend 24) |c_ULTIMATE.start_main_~var_5~0#1|)) (.cse42 ((_ zero_extend 24) |c_ULTIMATE.start_main_~mask_SORT_1~0#1|))) (let ((.cse2 (= ((_ zero_extend 24) |c_ULTIMATE.start_main_~var_17~0#1|) .cse36)) (.cse4 (= (_ bv0 8) ((_ extract 7 0) (bvand .cse42 (_ bv1 32))))) (.cse6 (= .cse47 .cse41)) (.cse19 (and (or .cse17 .cse46) .cse29)) (.cse15 (and .cse28 (or .cse17 .cse45))) (.cse21 (forall ((|ULTIMATE.start_main_~mask_SORT_4~0#1| (_ BitVec 8))) (not (= .cse24 ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) |ULTIMATE.start_main_~mask_SORT_4~0#1|) .cse44))))))) (.cse18 (forall ((|ULTIMATE.start_main_~mask_SORT_4~0#1| (_ BitVec 8))) (= .cse24 ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) |ULTIMATE.start_main_~mask_SORT_4~0#1|) .cse44)))))) (.cse31 (forall ((|ULTIMATE.start_main_~mask_SORT_4~0#1| (_ BitVec 8))) (= .cse24 ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) |ULTIMATE.start_main_~mask_SORT_4~0#1|) .cse43)))))) (.cse33 (forall ((|ULTIMATE.start_main_~mask_SORT_4~0#1| (_ BitVec 8))) (not (= .cse24 ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) |ULTIMATE.start_main_~mask_SORT_4~0#1|) .cse43))))))) (.cse22 (forall ((|v_ULTIMATE.start_main_~var_14_arg_0~0#1_10| (_ BitVec 8))) (= (_ bv0 8) ((_ extract 7 0) (bvand .cse42 ((_ zero_extend 24) ((_ extract 7 0) (bvand (_ bv255 32) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_14_arg_0~0#1_10|))))))))) (.cse14 (forall ((|v_ULTIMATE.start_main_~var_14_arg_0~0#1_10| (_ BitVec 8))) (= (_ bv0 8) ((_ extract 7 0) (bvand .cse42 ((_ zero_extend 24) ((_ extract 7 0) (bvand (_ bv254 32) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_14_arg_0~0#1_10|)))))))))) (let ((.cse7 (let ((.cse39 ((_ zero_extend 24) ((_ extract 7 0) .cse41)))) (and (or .cse22 (let ((.cse38 (forall ((|ULTIMATE.start_main_~mask_SORT_4~0#1| (_ BitVec 8))) (not (= .cse24 ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) |ULTIMATE.start_main_~mask_SORT_4~0#1|) .cse39)))))))) (and (or .cse38 .cse32) (or .cse17 .cse38)))) (or .cse14 (let ((.cse40 (forall ((|ULTIMATE.start_main_~mask_SORT_4~0#1| (_ BitVec 8))) (= .cse24 ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) |ULTIMATE.start_main_~mask_SORT_4~0#1|) .cse39))))))) (and (or .cse40 .cse32) (or .cse17 .cse40))))))) (.cse9 (forall ((|ULTIMATE.start_main_~var_38~0#1| (_ BitVec 8))) (not (= ((_ zero_extend 24) |ULTIMATE.start_main_~var_38~0#1|) .cse36)))) (.cse23 (let ((.cse37 (and (or .cse31 .cse14) (or .cse22 .cse33)))) (and (or .cse37 .cse32) (or .cse17 .cse37)))) (.cse16 (or .cse18 .cse32)) (.cse20 (or .cse21 .cse32)) (.cse26 (and (or .cse22 .cse19) (or .cse14 .cse15))) (.cse8 (not .cse6)) (.cse5 (not .cse4)) (.cse0 (not .cse2)) (.cse10 (forall ((|ULTIMATE.start_main_~var_38~0#1| (_ BitVec 8))) (= ((_ zero_extend 24) |ULTIMATE.start_main_~var_38~0#1|) .cse36)))) (and (or (let ((.cse1 (let ((.cse3 (and (or .cse6 .cse7) (or .cse8 .cse7)))) (and (or .cse3 .cse4) (or .cse5 .cse3))))) (and (or .cse0 .cse1) (or .cse2 .cse1))) .cse9) (or .cse10 (let ((.cse11 (let ((.cse12 (and (or .cse7 .cse4) (or .cse5 .cse7)))) (and (or .cse12 .cse6) (or .cse12 .cse8))))) (and (or .cse2 .cse11) (or .cse11 .cse0)))) (or .cse9 (let ((.cse13 (or (and (or (let ((.cse25 ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) |c_ULTIMATE.start_main_~var_29~0#1|))))))))))) (and (or .cse22 (and .cse20 (or (forall ((|ULTIMATE.start_main_~mask_SORT_4~0#1| (_ BitVec 8))) (not (= .cse24 ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse25 ((_ zero_extend 24) |ULTIMATE.start_main_~mask_SORT_4~0#1|))))))) .cse17))) (or (and .cse16 (or .cse17 (forall ((|ULTIMATE.start_main_~mask_SORT_4~0#1| (_ BitVec 8))) (= .cse24 ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse25 ((_ zero_extend 24) |ULTIMATE.start_main_~mask_SORT_4~0#1|)))))))) .cse14))) .cse8) (or .cse26 .cse6)) .cse4))) (and (or (and .cse13 (or (and (or .cse14 (and (or .cse6 .cse15) (or (and .cse16 (or .cse17 .cse18)) .cse8))) (or (and (or .cse19 .cse6) (or (and .cse20 (or .cse17 .cse21)) .cse8)) .cse22)) .cse5)) .cse0) (or .cse2 (and .cse13 (or (and (or .cse23 .cse8) (or .cse23 .cse6)) .cse5)))))) (or (and (or .cse2 (let ((.cse27 (or .cse17 .cse31)) (.cse30 (or .cse17 .cse33))) (and (or (and (or (and (or (and .cse27 .cse28) .cse14) (or .cse22 (and .cse29 .cse30))) .cse4) (or .cse23 .cse5)) .cse6) (or (and (or (and (or (and .cse27 .cse16) .cse4) (or (and .cse27 (or .cse31 .cse32)) .cse5)) .cse14) (or .cse22 (and (or (and .cse20 .cse30) .cse4) (or (and (or .cse33 .cse32) .cse30) .cse5)))) .cse8)))) (or (and (or .cse6 (and (or .cse26 .cse4) (or .cse26 .cse5))) (or .cse8 (let ((.cse34 (let ((.cse35 (and (or .cse22 .cse21) (or .cse18 .cse14)))) (and (or .cse35 .cse32) (or .cse17 .cse35))))) (and (or .cse34 .cse5) (or .cse34 .cse4))))) .cse0)) .cse10))))))) is different from false [2024-11-14 05:19:16,708 WARN L286 SmtUtils]: Spent 12.44s on a formula simplification that was a NOOP. DAG size: 264 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 05:19:30,309 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2024-11-14 05:19:30,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1331566917] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:19:30,311 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-14 05:19:30,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 6, 6] total 14 [2024-11-14 05:19:30,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821676392] [2024-11-14 05:19:30,312 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-14 05:19:30,312 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-14 05:19:30,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:19:30,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-14 05:19:30,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=111, Unknown=5, NotChecked=22, Total=182 [2024-11-14 05:19:30,316 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 14 states, 14 states have (on average 2.142857142857143) internal successors, (30), 14 states have internal predecessors, (30), 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) [2024-11-14 05:19:32,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:19:32,286 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2024-11-14 05:19:32,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 05:19:32,287 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.142857142857143) internal successors, (30), 14 states have internal predecessors, (30), 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 8 [2024-11-14 05:19:32,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:19:32,287 INFO L225 Difference]: With dead ends: 15 [2024-11-14 05:19:32,287 INFO L226 Difference]: Without dead ends: 13 [2024-11-14 05:19:32,288 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 27 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 44.6s TimeCoverageRelationStatistics Valid=75, Invalid=164, Unknown=5, NotChecked=28, Total=272 [2024-11-14 05:19:32,289 INFO L432 NwaCegarLoop]: 4 mSDtfsCounter, 4 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 7 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-14 05:19:32,289 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 20 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 7 Unchecked, 0.5s Time] [2024-11-14 05:19:32,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2024-11-14 05:19:32,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2024-11-14 05:19:32,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 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) [2024-11-14 05:19:32,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2024-11-14 05:19:32,293 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 8 [2024-11-14 05:19:32,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:19:32,294 INFO L471 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2024-11-14 05:19:32,294 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.142857142857143) internal successors, (30), 14 states have internal predecessors, (30), 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) [2024-11-14 05:19:32,294 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2024-11-14 05:19:32,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-14 05:19:32,295 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:19:32,295 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2024-11-14 05:19:32,312 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9013f3-6694-4bae-93d1-c4957324329b/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-14 05:19:32,497 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9013f3-6694-4bae-93d1-c4957324329b/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2024-11-14 05:19:32,698 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9013f3-6694-4bae-93d1-c4957324329b/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (4)] Ended with exit code 0 [2024-11-14 05:19:32,896 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9013f3-6694-4bae-93d1-c4957324329b/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9013f3-6694-4bae-93d1-c4957324329b/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9013f3-6694-4bae-93d1-c4957324329b/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt [2024-11-14 05:19:32,896 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:19:32,897 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:19:32,897 INFO L85 PathProgramCache]: Analyzing trace with hash 1906115653, now seen corresponding path program 2 times [2024-11-14 05:19:32,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:19:32,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [576567437] [2024-11-14 05:19:32,898 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-14 05:19:32,898 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 [2024-11-14 05:19:32,898 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9013f3-6694-4bae-93d1-c4957324329b/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:19:32,899 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9013f3-6694-4bae-93d1-c4957324329b/bin/utaipan-verify-sOmjnqqW8E/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) [2024-11-14 05:19:32,901 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9013f3-6694-4bae-93d1-c4957324329b/bin/utaipan-verify-sOmjnqqW8E/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 [2024-11-14 05:19:33,006 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-14 05:19:33,006 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:19:33,009 INFO L255 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-14 05:19:33,015 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:19:37,995 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:19:37,995 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:24:10,714 WARN L286 SmtUtils]: Spent 1.30m on a formula simplification that was a NOOP. DAG size: 780 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 05:27:25,127 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:27:25,128 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:27:25,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [576567437] [2024-11-14 05:27:25,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [576567437] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:27:25,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1205208037] [2024-11-14 05:27:25,128 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-14 05:27:25,128 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 05:27:25,128 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9013f3-6694-4bae-93d1-c4957324329b/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 05:27:25,130 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9013f3-6694-4bae-93d1-c4957324329b/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 05:27:25,132 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9013f3-6694-4bae-93d1-c4957324329b/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2024-11-14 05:27:25,353 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-14 05:27:25,353 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:27:25,356 INFO L255 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-14 05:27:25,361 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:27:30,602 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:27:30,602 INFO L311 TraceCheckSpWp]: Computing backward predicates...