./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/neural-networks/vdp_10_safe.c-amalgamation.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 551b0097 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/neural-networks/vdp_10_safe.c-amalgamation.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a17052816b7fb7ec73f633423f7debc2935f42283bd9613cd2f0f403c72864f5 --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-09 02:34:47,555 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-09 02:34:47,616 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-01-09 02:34:47,623 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-09 02:34:47,623 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-09 02:34:47,651 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-09 02:34:47,653 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-09 02:34:47,653 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-09 02:34:47,653 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-09 02:34:47,654 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-09 02:34:47,654 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-09 02:34:47,654 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-09 02:34:47,655 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-09 02:34:47,655 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-09 02:34:47,655 INFO L153 SettingsManager]: * Use SBE=true [2025-01-09 02:34:47,655 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-09 02:34:47,656 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-09 02:34:47,656 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-09 02:34:47,656 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-09 02:34:47,656 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-09 02:34:47,656 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-09 02:34:47,656 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-09 02:34:47,656 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-09 02:34:47,656 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-09 02:34:47,656 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-09 02:34:47,656 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-09 02:34:47,657 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-09 02:34:47,657 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-09 02:34:47,657 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-09 02:34:47,657 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 02:34:47,657 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 02:34:47,657 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 02:34:47,657 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 02:34:47,658 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-09 02:34:47,658 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 02:34:47,658 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 02:34:47,658 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 02:34:47,658 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 02:34:47,658 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-09 02:34:47,658 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-09 02:34:47,658 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-09 02:34:47,658 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-09 02:34:47,659 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-09 02:34:47,659 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-09 02:34:47,659 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-09 02:34:47,659 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-09 02:34:47,659 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-09 02:34:47,659 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-09 02:34:47,659 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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 -> /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux 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 -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a17052816b7fb7ec73f633423f7debc2935f42283bd9613cd2f0f403c72864f5 [2025-01-09 02:34:47,893 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-09 02:34:47,900 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-09 02:34:47,902 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-09 02:34:47,903 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-09 02:34:47,903 INFO L274 PluginConnector]: CDTParser initialized [2025-01-09 02:34:47,904 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/neural-networks/vdp_10_safe.c-amalgamation.i [2025-01-09 02:34:49,025 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/98cf845b5/e1441c97eab54835b29b84599ca0b6bd/FLAG673fbb1ef [2025-01-09 02:34:49,436 INFO L384 CDTParser]: Found 1 translation units. [2025-01-09 02:34:49,437 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/neural-networks/vdp_10_safe.c-amalgamation.i [2025-01-09 02:34:49,454 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/98cf845b5/e1441c97eab54835b29b84599ca0b6bd/FLAG673fbb1ef [2025-01-09 02:34:49,595 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/98cf845b5/e1441c97eab54835b29b84599ca0b6bd [2025-01-09 02:34:49,597 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-09 02:34:49,599 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-09 02:34:49,603 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-09 02:34:49,603 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-09 02:34:49,610 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-09 02:34:49,610 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 02:34:49" (1/1) ... [2025-01-09 02:34:49,611 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46429ad0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:34:49, skipping insertion in model container [2025-01-09 02:34:49,611 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 02:34:49" (1/1) ... [2025-01-09 02:34:49,649 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-09 02:34:50,094 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/neural-networks/vdp_10_safe.c-amalgamation.i[63640,63653] [2025-01-09 02:34:50,186 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 02:34:50,269 INFO L200 MainTranslator]: Completed pre-run [2025-01-09 02:34:50,320 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/neural-networks/vdp_10_safe.c-amalgamation.i[63640,63653] [2025-01-09 02:34:50,367 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 02:34:50,560 INFO L204 MainTranslator]: Completed translation [2025-01-09 02:34:50,560 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:34:50 WrapperNode [2025-01-09 02:34:50,561 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-09 02:34:50,562 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-09 02:34:50,562 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-09 02:34:50,562 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-09 02:34:50,566 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:34:50" (1/1) ... [2025-01-09 02:34:50,589 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:34:50" (1/1) ... [2025-01-09 02:34:50,673 INFO L138 Inliner]: procedures = 620, calls = 1412, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 1652 [2025-01-09 02:34:50,674 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-09 02:34:50,674 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-09 02:34:50,675 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-09 02:34:50,675 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-09 02:34:50,681 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:34:50" (1/1) ... [2025-01-09 02:34:50,682 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:34:50" (1/1) ... [2025-01-09 02:34:50,729 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:34:50" (1/1) ... [2025-01-09 02:34:50,737 WARN L109 MemorySlicer]: Omit memory slicing because it failed with the following exception: Unsupported: Memory array in LHS [2025-01-09 02:34:50,737 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:34:50" (1/1) ... [2025-01-09 02:34:50,737 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:34:50" (1/1) ... [2025-01-09 02:34:50,791 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:34:50" (1/1) ... [2025-01-09 02:34:50,797 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:34:50" (1/1) ... [2025-01-09 02:34:50,805 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:34:50" (1/1) ... [2025-01-09 02:34:50,814 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:34:50" (1/1) ... [2025-01-09 02:34:50,821 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:34:50" (1/1) ... [2025-01-09 02:34:50,835 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-09 02:34:50,836 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-09 02:34:50,837 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-09 02:34:50,837 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-09 02:34:50,838 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:34:50" (1/1) ... [2025-01-09 02:34:50,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 02:34:50,852 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 02:34:50,865 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-01-09 02:34:50,867 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-01-09 02:34:50,887 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2025-01-09 02:34:50,887 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-01-09 02:34:50,888 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real [2025-01-09 02:34:50,888 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2025-01-09 02:34:50,888 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2025-01-09 02:34:50,888 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-09 02:34:50,888 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-09 02:34:50,888 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-09 02:34:50,888 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-01-09 02:34:50,888 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2025-01-09 02:34:51,020 INFO L234 CfgBuilder]: Building ICFG [2025-01-09 02:34:51,021 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-09 02:35:43,599 INFO L? ?]: Removed 117 outVars from TransFormulas that were not future-live. [2025-01-09 02:35:43,600 INFO L283 CfgBuilder]: Performing block encoding [2025-01-09 02:35:43,606 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-09 02:35:43,606 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-01-09 02:35:43,606 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 02:35:43 BoogieIcfgContainer [2025-01-09 02:35:43,606 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-09 02:35:43,608 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-09 02:35:43,608 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-09 02:35:43,610 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-09 02:35:43,611 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.01 02:34:49" (1/3) ... [2025-01-09 02:35:43,611 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22d53d94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 02:35:43, skipping insertion in model container [2025-01-09 02:35:43,611 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:34:50" (2/3) ... [2025-01-09 02:35:43,611 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22d53d94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 02:35:43, skipping insertion in model container [2025-01-09 02:35:43,611 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 02:35:43" (3/3) ... [2025-01-09 02:35:43,612 INFO L128 eAbstractionObserver]: Analyzing ICFG vdp_10_safe.c-amalgamation.i [2025-01-09 02:35:43,621 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-09 02:35:43,622 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG vdp_10_safe.c-amalgamation.i that has 1 procedures, 46 locations, 1 initial locations, 11 loop locations, and 1 error locations. [2025-01-09 02:35:43,661 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-09 02:35:43,671 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=PETRI_NET, 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;@53ac5086, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-09 02:35:43,671 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-01-09 02:35:43,673 INFO L276 IsEmpty]: Start isEmpty. Operand has 46 states, 44 states have (on average 1.5681818181818181) internal successors, (69), 45 states have internal predecessors, (69), 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) [2025-01-09 02:35:43,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2025-01-09 02:35:43,677 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 02:35:43,677 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 02:35:43,678 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 02:35:43,681 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 02:35:43,681 INFO L85 PathProgramCache]: Analyzing trace with hash -157730162, now seen corresponding path program 1 times [2025-01-09 02:35:43,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 02:35:43,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688406032] [2025-01-09 02:35:43,686 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 02:35:43,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms