./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.zaher.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_fd517167-e960-4fe3-ab01-052dac0dbb24/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd517167-e960-4fe3-ab01-052dac0dbb24/bin/uautomizer-verify-qhAvR1uOyd/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd517167-e960-4fe3-ab01-052dac0dbb24/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd517167-e960-4fe3-ab01-052dac0dbb24/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.zaher.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd517167-e960-4fe3-ab01-052dac0dbb24/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd517167-e960-4fe3-ab01-052dac0dbb24/bin/uautomizer-verify-qhAvR1uOyd --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 64bit --witnessprinter.graph.data.programhash 6fd8c0f78f1a02f0110655a19aab6ed326f45dcdd8f1755f6a67e81d29b9a49c --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 14:56:24,570 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 14:56:24,644 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd517167-e960-4fe3-ab01-052dac0dbb24/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-11-13 14:56:24,648 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 14:56:24,649 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 14:56:24,687 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 14:56:24,690 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 14:56:24,690 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 14:56:24,691 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 14:56:24,691 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 14:56:24,691 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 14:56:24,691 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 14:56:24,692 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 14:56:24,692 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 14:56:24,692 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 14:56:24,692 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 14:56:24,692 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 14:56:24,692 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 14:56:24,693 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 14:56:24,693 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 14:56:24,693 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 14:56:24,693 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 14:56:24,693 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 14:56:24,693 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 14:56:24,693 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 14:56:24,693 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 14:56:24,695 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 14:56:24,695 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 14:56:24,695 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 14:56:24,695 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 14:56:24,695 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 14:56:24,695 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 14:56:24,695 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 14:56:24,696 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 14:56:24,696 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 14:56:24,696 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 14:56:24,696 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 14:56:24,696 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 14:56:24,696 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 14:56:24,696 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 -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd517167-e960-4fe3-ab01-052dac0dbb24/bin/uautomizer-verify-qhAvR1uOyd 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 -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6fd8c0f78f1a02f0110655a19aab6ed326f45dcdd8f1755f6a67e81d29b9a49c [2024-11-13 14:56:25,036 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 14:56:25,051 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 14:56:25,053 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 14:56:25,054 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 14:56:25,054 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 14:56:25,055 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd517167-e960-4fe3-ab01-052dac0dbb24/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.zaher.c Unable to find full path for "g++" [2024-11-13 14:56:26,865 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 14:56:27,183 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 14:56:27,184 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd517167-e960-4fe3-ab01-052dac0dbb24/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.zaher.c [2024-11-13 14:56:27,199 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd517167-e960-4fe3-ab01-052dac0dbb24/bin/uautomizer-verify-qhAvR1uOyd/data/d2560d3c6/5cd8295b5ba54890b052117a9e6f10a1/FLAG4821888df [2024-11-13 14:56:27,230 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd517167-e960-4fe3-ab01-052dac0dbb24/bin/uautomizer-verify-qhAvR1uOyd/data/d2560d3c6/5cd8295b5ba54890b052117a9e6f10a1 [2024-11-13 14:56:27,232 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 14:56:27,234 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 14:56:27,235 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 14:56:27,235 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 14:56:27,239 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 14:56:27,240 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:56:27" (1/1) ... [2024-11-13 14:56:27,243 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@517187e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:56:27, skipping insertion in model container [2024-11-13 14:56:27,243 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:56:27" (1/1) ... [2024-11-13 14:56:27,283 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 14:56:27,441 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_fd517167-e960-4fe3-ab01-052dac0dbb24/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.zaher.c[1245,1258] [2024-11-13 14:56:27,565 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 14:56:27,574 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 14:56:27,584 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_fd517167-e960-4fe3-ab01-052dac0dbb24/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.zaher.c[1245,1258] [2024-11-13 14:56:27,655 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 14:56:27,675 INFO L204 MainTranslator]: Completed translation [2024-11-13 14:56:27,676 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:56:27 WrapperNode [2024-11-13 14:56:27,676 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 14:56:27,678 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 14:56:27,678 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 14:56:27,678 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 14:56:27,684 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:56:27" (1/1) ... [2024-11-13 14:56:27,699 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:56:27" (1/1) ... [2024-11-13 14:56:27,784 INFO L138 Inliner]: procedures = 17, calls = 16, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 777 [2024-11-13 14:56:27,784 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 14:56:27,785 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 14:56:27,785 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 14:56:27,785 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 14:56:27,794 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:56:27" (1/1) ... [2024-11-13 14:56:27,795 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:56:27" (1/1) ... [2024-11-13 14:56:27,812 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:56:27" (1/1) ... [2024-11-13 14:56:27,863 INFO L175 MemorySlicer]: Split 10 memory accesses to 2 slices as follows [2, 8]. 80 percent of accesses are in the largest equivalence class. The 10 initializations are split as follows [2, 8]. The 0 writes are split as follows [0, 0]. [2024-11-13 14:56:27,866 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:56:27" (1/1) ... [2024-11-13 14:56:27,867 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:56:27" (1/1) ... [2024-11-13 14:56:27,905 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:56:27" (1/1) ... [2024-11-13 14:56:27,910 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:56:27" (1/1) ... [2024-11-13 14:56:27,925 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:56:27" (1/1) ... [2024-11-13 14:56:27,935 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:56:27" (1/1) ... [2024-11-13 14:56:27,948 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 14:56:27,949 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 14:56:27,949 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 14:56:27,949 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 14:56:27,950 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:56:27" (1/1) ... [2024-11-13 14:56:27,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 14:56:27,968 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd517167-e960-4fe3-ab01-052dac0dbb24/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:56:27,980 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd517167-e960-4fe3-ab01-052dac0dbb24/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 14:56:27,982 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd517167-e960-4fe3-ab01-052dac0dbb24/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 14:56:28,006 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 14:56:28,007 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-13 14:56:28,007 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-13 14:56:28,007 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 14:56:28,007 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 14:56:28,228 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 14:56:28,230 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 14:56:29,590 INFO L? ?]: Removed 340 outVars from TransFormulas that were not future-live. [2024-11-13 14:56:29,591 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 14:56:29,607 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 14:56:29,607 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-13 14:56:29,607 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:56:29 BoogieIcfgContainer [2024-11-13 14:56:29,607 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 14:56:29,610 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 14:56:29,610 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 14:56:29,614 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 14:56:29,615 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 02:56:27" (1/3) ... [2024-11-13 14:56:29,615 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5468a623 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:56:29, skipping insertion in model container [2024-11-13 14:56:29,615 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:56:27" (2/3) ... [2024-11-13 14:56:29,615 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5468a623 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:56:29, skipping insertion in model container [2024-11-13 14:56:29,615 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:56:29" (3/3) ... [2024-11-13 14:56:29,617 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.zaher.c [2024-11-13 14:56:29,632 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 14:56:29,634 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG btor2c-lazyMod.zaher.c that has 1 procedures, 182 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-13 14:56:29,701 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 14:56:29,716 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;@330451a0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 14:56:29,716 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-13 14:56:29,723 INFO L276 IsEmpty]: Start isEmpty. Operand has 182 states, 180 states have (on average 1.4944444444444445) internal successors, (269), 181 states have internal predecessors, (269), 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) [2024-11-13 14:56:29,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-13 14:56:29,733 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:56:29,734 INFO L215 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:56:29,734 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:56:29,741 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:56:29,741 INFO L85 PathProgramCache]: Analyzing trace with hash 52855507, now seen corresponding path program 1 times [2024-11-13 14:56:29,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:56:29,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449839175] [2024-11-13 14:56:29,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:56:29,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:56:30,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:56:30,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:56:30,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:56:30,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449839175] [2024-11-13 14:56:30,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449839175] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:56:30,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:56:30,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 14:56:30,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478697641] [2024-11-13 14:56:30,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:56:30,900 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 14:56:30,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:56:30,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 14:56:30,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 14:56:30,928 INFO L87 Difference]: Start difference. First operand has 182 states, 180 states have (on average 1.4944444444444445) internal successors, (269), 181 states have internal predecessors, (269), 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 13.25) internal successors, (53), 4 states have internal predecessors, (53), 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) [2024-11-13 14:56:31,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:56:31,020 INFO L93 Difference]: Finished difference Result 305 states and 453 transitions. [2024-11-13 14:56:31,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 14:56:31,027 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 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 53 [2024-11-13 14:56:31,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:56:31,039 INFO L225 Difference]: With dead ends: 305 [2024-11-13 14:56:31,039 INFO L226 Difference]: Without dead ends: 181 [2024-11-13 14:56:31,042 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 14:56:31,045 INFO L432 NwaCegarLoop]: 263 mSDtfsCounter, 0 mSDsluCounter, 520 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 783 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 14:56:31,046 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 783 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 14:56:31,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2024-11-13 14:56:31,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2024-11-13 14:56:31,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 180 states have (on average 1.4833333333333334) internal successors, (267), 180 states have internal predecessors, (267), 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) [2024-11-13 14:56:31,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 267 transitions. [2024-11-13 14:56:31,090 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 267 transitions. Word has length 53 [2024-11-13 14:56:31,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:56:31,091 INFO L471 AbstractCegarLoop]: Abstraction has 181 states and 267 transitions. [2024-11-13 14:56:31,091 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 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) [2024-11-13 14:56:31,091 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 267 transitions. [2024-11-13 14:56:31,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-13 14:56:31,093 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:56:31,093 INFO L215 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:56:31,093 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 14:56:31,094 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:56:31,094 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:56:31,094 INFO L85 PathProgramCache]: Analyzing trace with hash 1640216182, now seen corresponding path program 1 times [2024-11-13 14:56:31,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:56:31,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643853539] [2024-11-13 14:56:31,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:56:31,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:56:31,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:56:31,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:56:31,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:56:31,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643853539] [2024-11-13 14:56:31,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643853539] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:56:31,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:56:31,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 14:56:31,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246975709] [2024-11-13 14:56:31,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:56:31,467 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 14:56:31,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:56:31,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 14:56:31,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 14:56:31,468 INFO L87 Difference]: Start difference. First operand 181 states and 267 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 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) [2024-11-13 14:56:31,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:56:31,542 INFO L93 Difference]: Finished difference Result 306 states and 451 transitions. [2024-11-13 14:56:31,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 14:56:31,543 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 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 54 [2024-11-13 14:56:31,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:56:31,544 INFO L225 Difference]: With dead ends: 306 [2024-11-13 14:56:31,545 INFO L226 Difference]: Without dead ends: 183 [2024-11-13 14:56:31,545 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 14:56:31,546 INFO L432 NwaCegarLoop]: 263 mSDtfsCounter, 0 mSDsluCounter, 516 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 779 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 14:56:31,549 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 779 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 14:56:31,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2024-11-13 14:56:31,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 183. [2024-11-13 14:56:31,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 182 states have (on average 1.478021978021978) internal successors, (269), 182 states have internal predecessors, (269), 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) [2024-11-13 14:56:31,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 269 transitions. [2024-11-13 14:56:31,568 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 269 transitions. Word has length 54 [2024-11-13 14:56:31,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:56:31,568 INFO L471 AbstractCegarLoop]: Abstraction has 183 states and 269 transitions. [2024-11-13 14:56:31,569 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 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) [2024-11-13 14:56:31,569 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 269 transitions. [2024-11-13 14:56:31,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-13 14:56:31,573 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:56:31,573 INFO L215 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:56:31,574 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-13 14:56:31,574 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:56:31,574 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:56:31,574 INFO L85 PathProgramCache]: Analyzing trace with hash -1790871540, now seen corresponding path program 1 times [2024-11-13 14:56:31,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:56:31,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141819527] [2024-11-13 14:56:31,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:56:31,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:56:31,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:56:32,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:56:32,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:56:32,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141819527] [2024-11-13 14:56:32,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141819527] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:56:32,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:56:32,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 14:56:32,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302899079] [2024-11-13 14:56:32,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:56:32,312 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 14:56:32,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:56:32,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 14:56:32,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:56:32,312 INFO L87 Difference]: Start difference. First operand 183 states and 269 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:56:32,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:56:32,448 INFO L93 Difference]: Finished difference Result 372 states and 544 transitions. [2024-11-13 14:56:32,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 14:56:32,449 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2024-11-13 14:56:32,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:56:32,451 INFO L225 Difference]: With dead ends: 372 [2024-11-13 14:56:32,451 INFO L226 Difference]: Without dead ends: 247 [2024-11-13 14:56:32,452 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-13 14:56:32,453 INFO L432 NwaCegarLoop]: 254 mSDtfsCounter, 406 mSDsluCounter, 504 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 406 SdHoareTripleChecker+Valid, 758 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:56:32,453 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [406 Valid, 758 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 14:56:32,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2024-11-13 14:56:32,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 190. [2024-11-13 14:56:32,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 189 states have (on average 1.470899470899471) internal successors, (278), 189 states have internal predecessors, (278), 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) [2024-11-13 14:56:32,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 278 transitions. [2024-11-13 14:56:32,474 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 278 transitions. Word has length 55 [2024-11-13 14:56:32,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:56:32,474 INFO L471 AbstractCegarLoop]: Abstraction has 190 states and 278 transitions. [2024-11-13 14:56:32,474 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:56:32,477 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 278 transitions. [2024-11-13 14:56:32,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-13 14:56:32,479 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:56:32,479 INFO L215 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, 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] [2024-11-13 14:56:32,479 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-13 14:56:32,479 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:56:32,479 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:56:32,479 INFO L85 PathProgramCache]: Analyzing trace with hash -1950040025, now seen corresponding path program 1 times [2024-11-13 14:56:32,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:56:32,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135083705] [2024-11-13 14:56:32,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:56:32,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:56:32,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:56:32,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:56:32,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:56:32,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135083705] [2024-11-13 14:56:32,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135083705] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:56:32,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:56:32,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-13 14:56:32,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736277561] [2024-11-13 14:56:32,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:56:32,975 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 14:56:32,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:56:32,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 14:56:32,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-13 14:56:32,976 INFO L87 Difference]: Start difference. First operand 190 states and 278 transitions. Second operand has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 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) [2024-11-13 14:56:33,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:56:33,146 INFO L93 Difference]: Finished difference Result 384 states and 560 transitions. [2024-11-13 14:56:33,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 14:56:33,147 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 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 56 [2024-11-13 14:56:33,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:56:33,148 INFO L225 Difference]: With dead ends: 384 [2024-11-13 14:56:33,148 INFO L226 Difference]: Without dead ends: 259 [2024-11-13 14:56:33,149 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-11-13 14:56:33,149 INFO L432 NwaCegarLoop]: 254 mSDtfsCounter, 438 mSDsluCounter, 851 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 438 SdHoareTripleChecker+Valid, 1105 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:56:33,150 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [438 Valid, 1105 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 14:56:33,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2024-11-13 14:56:33,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 192. [2024-11-13 14:56:33,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 191 states have (on average 1.4659685863874345) internal successors, (280), 191 states have internal predecessors, (280), 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) [2024-11-13 14:56:33,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 280 transitions. [2024-11-13 14:56:33,170 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 280 transitions. Word has length 56 [2024-11-13 14:56:33,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:56:33,170 INFO L471 AbstractCegarLoop]: Abstraction has 192 states and 280 transitions. [2024-11-13 14:56:33,170 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 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) [2024-11-13 14:56:33,170 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 280 transitions. [2024-11-13 14:56:33,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-13 14:56:33,171 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:56:33,171 INFO L215 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, 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] [2024-11-13 14:56:33,171 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-13 14:56:33,172 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:56:33,172 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:56:33,172 INFO L85 PathProgramCache]: Analyzing trace with hash 923396453, now seen corresponding path program 1 times [2024-11-13 14:56:33,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:56:33,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554768709] [2024-11-13 14:56:33,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:56:33,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:56:33,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:56:33,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:56:33,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:56:33,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554768709] [2024-11-13 14:56:33,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554768709] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:56:33,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:56:33,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-13 14:56:33,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817524709] [2024-11-13 14:56:33,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:56:33,702 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 14:56:33,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:56:33,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 14:56:33,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-13 14:56:33,703 INFO L87 Difference]: Start difference. First operand 192 states and 280 transitions. Second operand has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 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) [2024-11-13 14:56:33,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:56:33,871 INFO L93 Difference]: Finished difference Result 368 states and 535 transitions. [2024-11-13 14:56:33,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 14:56:33,872 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 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 57 [2024-11-13 14:56:33,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:56:33,875 INFO L225 Difference]: With dead ends: 368 [2024-11-13 14:56:33,875 INFO L226 Difference]: Without dead ends: 243 [2024-11-13 14:56:33,876 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-11-13 14:56:33,876 INFO L432 NwaCegarLoop]: 251 mSDtfsCounter, 385 mSDsluCounter, 815 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 385 SdHoareTripleChecker+Valid, 1066 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:56:33,878 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [385 Valid, 1066 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 14:56:33,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2024-11-13 14:56:33,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 195. [2024-11-13 14:56:33,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 194 states have (on average 1.4639175257731958) internal successors, (284), 194 states have internal predecessors, (284), 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) [2024-11-13 14:56:33,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 284 transitions. [2024-11-13 14:56:33,894 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 284 transitions. Word has length 57 [2024-11-13 14:56:33,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:56:33,894 INFO L471 AbstractCegarLoop]: Abstraction has 195 states and 284 transitions. [2024-11-13 14:56:33,895 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 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) [2024-11-13 14:56:33,895 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 284 transitions. [2024-11-13 14:56:33,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-13 14:56:33,896 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:56:33,896 INFO L215 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, 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] [2024-11-13 14:56:33,896 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-13 14:56:33,896 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:56:33,899 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:56:33,899 INFO L85 PathProgramCache]: Analyzing trace with hash -1420858620, now seen corresponding path program 1 times [2024-11-13 14:56:33,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:56:33,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933268759] [2024-11-13 14:56:33,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:56:33,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:56:33,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:56:34,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:56:34,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:56:34,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933268759] [2024-11-13 14:56:34,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933268759] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:56:34,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:56:34,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 14:56:34,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799858207] [2024-11-13 14:56:34,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:56:34,187 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 14:56:34,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:56:34,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 14:56:34,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 14:56:34,188 INFO L87 Difference]: Start difference. First operand 195 states and 284 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 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) [2024-11-13 14:56:34,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:56:34,225 INFO L93 Difference]: Finished difference Result 322 states and 470 transitions. [2024-11-13 14:56:34,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 14:56:34,228 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 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 58 [2024-11-13 14:56:34,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:56:34,229 INFO L225 Difference]: With dead ends: 322 [2024-11-13 14:56:34,230 INFO L226 Difference]: Without dead ends: 197 [2024-11-13 14:56:34,230 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 14:56:34,231 INFO L432 NwaCegarLoop]: 263 mSDtfsCounter, 0 mSDsluCounter, 516 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 779 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 14:56:34,231 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 779 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 14:56:34,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2024-11-13 14:56:34,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 197. [2024-11-13 14:56:34,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 196 states have (on average 1.4591836734693877) internal successors, (286), 196 states have internal predecessors, (286), 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) [2024-11-13 14:56:34,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 286 transitions. [2024-11-13 14:56:34,247 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 286 transitions. Word has length 58 [2024-11-13 14:56:34,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:56:34,247 INFO L471 AbstractCegarLoop]: Abstraction has 197 states and 286 transitions. [2024-11-13 14:56:34,249 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 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) [2024-11-13 14:56:34,249 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 286 transitions. [2024-11-13 14:56:34,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-13 14:56:34,250 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:56:34,250 INFO L215 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, 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] [2024-11-13 14:56:34,250 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-13 14:56:34,250 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:56:34,251 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:56:34,251 INFO L85 PathProgramCache]: Analyzing trace with hash -188057147, now seen corresponding path program 1 times [2024-11-13 14:56:34,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:56:34,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245790386] [2024-11-13 14:56:34,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:56:34,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:56:34,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:56:34,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:56:34,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:56:34,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245790386] [2024-11-13 14:56:34,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245790386] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:56:34,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:56:34,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 14:56:34,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583341590] [2024-11-13 14:56:34,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:56:34,476 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 14:56:34,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:56:34,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 14:56:34,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:56:34,477 INFO L87 Difference]: Start difference. First operand 197 states and 286 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 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) [2024-11-13 14:56:34,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:56:34,519 INFO L93 Difference]: Finished difference Result 326 states and 474 transitions. [2024-11-13 14:56:34,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 14:56:34,520 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 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 59 [2024-11-13 14:56:34,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:56:34,521 INFO L225 Difference]: With dead ends: 326 [2024-11-13 14:56:34,521 INFO L226 Difference]: Without dead ends: 199 [2024-11-13 14:56:34,522 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:56:34,522 INFO L432 NwaCegarLoop]: 263 mSDtfsCounter, 0 mSDsluCounter, 516 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 779 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 14:56:34,522 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 779 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 14:56:34,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2024-11-13 14:56:34,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 199. [2024-11-13 14:56:34,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 198 states have (on average 1.4545454545454546) internal successors, (288), 198 states have internal predecessors, (288), 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) [2024-11-13 14:56:34,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 288 transitions. [2024-11-13 14:56:34,529 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 288 transitions. Word has length 59 [2024-11-13 14:56:34,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:56:34,529 INFO L471 AbstractCegarLoop]: Abstraction has 199 states and 288 transitions. [2024-11-13 14:56:34,529 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 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) [2024-11-13 14:56:34,529 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 288 transitions. [2024-11-13 14:56:34,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-13 14:56:34,530 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:56:34,530 INFO L215 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, 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] [2024-11-13 14:56:34,530 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-13 14:56:34,531 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:56:34,531 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:56:34,531 INFO L85 PathProgramCache]: Analyzing trace with hash -420610755, now seen corresponding path program 1 times [2024-11-13 14:56:34,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:56:34,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565496532] [2024-11-13 14:56:34,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:56:34,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:56:34,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:56:34,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:56:34,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:56:34,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565496532] [2024-11-13 14:56:34,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565496532] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:56:34,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:56:34,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 14:56:34,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813694865] [2024-11-13 14:56:34,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:56:34,743 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 14:56:34,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:56:34,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 14:56:34,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:56:34,744 INFO L87 Difference]: Start difference. First operand 199 states and 288 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 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) [2024-11-13 14:56:34,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:56:34,792 INFO L93 Difference]: Finished difference Result 330 states and 478 transitions. [2024-11-13 14:56:34,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 14:56:34,793 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 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 60 [2024-11-13 14:56:34,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:56:34,794 INFO L225 Difference]: With dead ends: 330 [2024-11-13 14:56:34,794 INFO L226 Difference]: Without dead ends: 201 [2024-11-13 14:56:34,794 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:56:34,795 INFO L432 NwaCegarLoop]: 263 mSDtfsCounter, 0 mSDsluCounter, 773 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1036 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 14:56:34,795 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1036 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 14:56:34,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2024-11-13 14:56:34,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 201. [2024-11-13 14:56:34,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 200 states have (on average 1.45) internal successors, (290), 200 states have internal predecessors, (290), 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) [2024-11-13 14:56:34,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 290 transitions. [2024-11-13 14:56:34,802 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 290 transitions. Word has length 60 [2024-11-13 14:56:34,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:56:34,802 INFO L471 AbstractCegarLoop]: Abstraction has 201 states and 290 transitions. [2024-11-13 14:56:34,802 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 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) [2024-11-13 14:56:34,802 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 290 transitions. [2024-11-13 14:56:34,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-13 14:56:34,802 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:56:34,803 INFO L215 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, 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] [2024-11-13 14:56:34,803 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-13 14:56:34,803 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:56:34,803 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:56:34,803 INFO L85 PathProgramCache]: Analyzing trace with hash 1209486348, now seen corresponding path program 1 times [2024-11-13 14:56:34,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:56:34,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864539502] [2024-11-13 14:56:34,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:56:34,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:56:34,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:56:34,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:56:34,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:56:34,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864539502] [2024-11-13 14:56:34,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864539502] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:56:34,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:56:34,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 14:56:34,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226827314] [2024-11-13 14:56:34,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:56:34,976 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 14:56:34,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:56:34,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 14:56:34,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 14:56:34,977 INFO L87 Difference]: Start difference. First operand 201 states and 290 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 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) [2024-11-13 14:56:35,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:56:35,016 INFO L93 Difference]: Finished difference Result 334 states and 482 transitions. [2024-11-13 14:56:35,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 14:56:35,017 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 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 61 [2024-11-13 14:56:35,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:56:35,019 INFO L225 Difference]: With dead ends: 334 [2024-11-13 14:56:35,019 INFO L226 Difference]: Without dead ends: 203 [2024-11-13 14:56:35,019 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 14:56:35,020 INFO L432 NwaCegarLoop]: 263 mSDtfsCounter, 0 mSDsluCounter, 516 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 779 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 14:56:35,020 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 779 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 14:56:35,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2024-11-13 14:56:35,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 203. [2024-11-13 14:56:35,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 202 states have (on average 1.4455445544554455) internal successors, (292), 202 states have internal predecessors, (292), 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) [2024-11-13 14:56:35,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 292 transitions. [2024-11-13 14:56:35,027 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 292 transitions. Word has length 61 [2024-11-13 14:56:35,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:56:35,027 INFO L471 AbstractCegarLoop]: Abstraction has 203 states and 292 transitions. [2024-11-13 14:56:35,027 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 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) [2024-11-13 14:56:35,027 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 292 transitions. [2024-11-13 14:56:35,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-13 14:56:35,028 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:56:35,028 INFO L215 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, 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] [2024-11-13 14:56:35,028 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-13 14:56:35,028 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:56:35,029 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:56:35,029 INFO L85 PathProgramCache]: Analyzing trace with hash 1826413174, now seen corresponding path program 1 times [2024-11-13 14:56:35,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:56:35,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809795704] [2024-11-13 14:56:35,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:56:35,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:56:35,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:56:35,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:56:35,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:56:35,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809795704] [2024-11-13 14:56:35,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809795704] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:56:35,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:56:35,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 14:56:35,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258861235] [2024-11-13 14:56:35,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:56:35,207 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 14:56:35,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:56:35,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 14:56:35,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 14:56:35,208 INFO L87 Difference]: Start difference. First operand 203 states and 292 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 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) [2024-11-13 14:56:35,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:56:35,242 INFO L93 Difference]: Finished difference Result 338 states and 486 transitions. [2024-11-13 14:56:35,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 14:56:35,243 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 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 62 [2024-11-13 14:56:35,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:56:35,244 INFO L225 Difference]: With dead ends: 338 [2024-11-13 14:56:35,244 INFO L226 Difference]: Without dead ends: 205 [2024-11-13 14:56:35,245 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 14:56:35,246 INFO L432 NwaCegarLoop]: 263 mSDtfsCounter, 0 mSDsluCounter, 516 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 779 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 14:56:35,249 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 779 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 14:56:35,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2024-11-13 14:56:35,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 205. [2024-11-13 14:56:35,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 204 states have (on average 1.4411764705882353) internal successors, (294), 204 states have internal predecessors, (294), 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) [2024-11-13 14:56:35,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 294 transitions. [2024-11-13 14:56:35,259 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 294 transitions. Word has length 62 [2024-11-13 14:56:35,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:56:35,260 INFO L471 AbstractCegarLoop]: Abstraction has 205 states and 294 transitions. [2024-11-13 14:56:35,260 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 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) [2024-11-13 14:56:35,260 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 294 transitions. [2024-11-13 14:56:35,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-13 14:56:35,260 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:56:35,260 INFO L215 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, 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] [2024-11-13 14:56:35,260 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-13 14:56:35,261 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:56:35,261 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:56:35,261 INFO L85 PathProgramCache]: Analyzing trace with hash 1880359314, now seen corresponding path program 1 times [2024-11-13 14:56:35,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:56:35,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143625714] [2024-11-13 14:56:35,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:56:35,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:56:35,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:56:35,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:56:35,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:56:35,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143625714] [2024-11-13 14:56:35,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143625714] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:56:35,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:56:35,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 14:56:35,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915551383] [2024-11-13 14:56:35,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:56:35,520 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 14:56:35,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:56:35,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 14:56:35,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-13 14:56:35,521 INFO L87 Difference]: Start difference. First operand 205 states and 294 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 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) [2024-11-13 14:56:35,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:56:35,599 INFO L93 Difference]: Finished difference Result 390 states and 554 transitions. [2024-11-13 14:56:35,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 14:56:35,600 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 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 62 [2024-11-13 14:56:35,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:56:35,601 INFO L225 Difference]: With dead ends: 390 [2024-11-13 14:56:35,601 INFO L226 Difference]: Without dead ends: 255 [2024-11-13 14:56:35,602 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-11-13 14:56:35,603 INFO L432 NwaCegarLoop]: 257 mSDtfsCounter, 378 mSDsluCounter, 508 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 378 SdHoareTripleChecker+Valid, 765 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 14:56:35,603 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [378 Valid, 765 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 14:56:35,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2024-11-13 14:56:35,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 210. [2024-11-13 14:56:35,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 209 states have (on average 1.4401913875598087) internal successors, (301), 209 states have internal predecessors, (301), 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) [2024-11-13 14:56:35,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 301 transitions. [2024-11-13 14:56:35,610 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 301 transitions. Word has length 62 [2024-11-13 14:56:35,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:56:35,610 INFO L471 AbstractCegarLoop]: Abstraction has 210 states and 301 transitions. [2024-11-13 14:56:35,610 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 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) [2024-11-13 14:56:35,611 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 301 transitions. [2024-11-13 14:56:35,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-13 14:56:35,612 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:56:35,612 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:56:35,612 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-13 14:56:35,612 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:56:35,613 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:56:35,613 INFO L85 PathProgramCache]: Analyzing trace with hash -2007328699, now seen corresponding path program 1 times [2024-11-13 14:56:35,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:56:35,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112533535] [2024-11-13 14:56:35,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:56:35,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:56:35,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:56:36,183 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-13 14:56:36,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:56:36,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112533535] [2024-11-13 14:56:36,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112533535] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:56:36,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:56:36,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 14:56:36,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386814461] [2024-11-13 14:56:36,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:56:36,185 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 14:56:36,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:56:36,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 14:56:36,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:56:36,186 INFO L87 Difference]: Start difference. First operand 210 states and 301 transitions. Second operand has 5 states, 5 states have (on average 24.0) internal successors, (120), 5 states have internal predecessors, (120), 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) [2024-11-13 14:56:36,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:56:36,237 INFO L93 Difference]: Finished difference Result 347 states and 497 transitions. [2024-11-13 14:56:36,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 14:56:36,238 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.0) internal successors, (120), 5 states have internal predecessors, (120), 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 124 [2024-11-13 14:56:36,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:56:36,239 INFO L225 Difference]: With dead ends: 347 [2024-11-13 14:56:36,239 INFO L226 Difference]: Without dead ends: 212 [2024-11-13 14:56:36,239 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:56:36,240 INFO L432 NwaCegarLoop]: 265 mSDtfsCounter, 0 mSDsluCounter, 517 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 782 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 14:56:36,240 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 782 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 14:56:36,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2024-11-13 14:56:36,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 212. [2024-11-13 14:56:36,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 211 states have (on average 1.4360189573459716) internal successors, (303), 211 states have internal predecessors, (303), 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) [2024-11-13 14:56:36,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 303 transitions. [2024-11-13 14:56:36,252 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 303 transitions. Word has length 124 [2024-11-13 14:56:36,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:56:36,253 INFO L471 AbstractCegarLoop]: Abstraction has 212 states and 303 transitions. [2024-11-13 14:56:36,254 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.0) internal successors, (120), 5 states have internal predecessors, (120), 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) [2024-11-13 14:56:36,254 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 303 transitions. [2024-11-13 14:56:36,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-13 14:56:36,255 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:56:36,255 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 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, 1, 1, 1, 1, 1, 1] [2024-11-13 14:56:36,255 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-13 14:56:36,255 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:56:36,256 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:56:36,257 INFO L85 PathProgramCache]: Analyzing trace with hash 1935999997, now seen corresponding path program 1 times [2024-11-13 14:56:36,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:56:36,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304895767] [2024-11-13 14:56:36,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:56:36,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:56:36,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:56:36,790 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-13 14:56:36,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:56:36,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304895767] [2024-11-13 14:56:36,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304895767] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:56:36,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:56:36,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 14:56:36,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472200732] [2024-11-13 14:56:36,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:56:36,791 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 14:56:36,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:56:36,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 14:56:36,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:56:36,792 INFO L87 Difference]: Start difference. First operand 212 states and 303 transitions. Second operand has 5 states, 5 states have (on average 24.4) internal successors, (122), 5 states have internal predecessors, (122), 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) [2024-11-13 14:56:36,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:56:36,840 INFO L93 Difference]: Finished difference Result 351 states and 501 transitions. [2024-11-13 14:56:36,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 14:56:36,840 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.4) internal successors, (122), 5 states have internal predecessors, (122), 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 125 [2024-11-13 14:56:36,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:56:36,842 INFO L225 Difference]: With dead ends: 351 [2024-11-13 14:56:36,842 INFO L226 Difference]: Without dead ends: 214 [2024-11-13 14:56:36,842 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:56:36,843 INFO L432 NwaCegarLoop]: 264 mSDtfsCounter, 0 mSDsluCounter, 773 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1037 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 14:56:36,843 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1037 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 14:56:36,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2024-11-13 14:56:36,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 214. [2024-11-13 14:56:36,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 213 states have (on average 1.431924882629108) internal successors, (305), 213 states have internal predecessors, (305), 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) [2024-11-13 14:56:36,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 305 transitions. [2024-11-13 14:56:36,855 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 305 transitions. Word has length 125 [2024-11-13 14:56:36,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:56:36,856 INFO L471 AbstractCegarLoop]: Abstraction has 214 states and 305 transitions. [2024-11-13 14:56:36,856 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.4) internal successors, (122), 5 states have internal predecessors, (122), 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) [2024-11-13 14:56:36,856 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 305 transitions. [2024-11-13 14:56:36,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-11-13 14:56:36,857 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:56:36,857 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 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, 1, 1, 1] [2024-11-13 14:56:36,858 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-13 14:56:36,858 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:56:36,858 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:56:36,858 INFO L85 PathProgramCache]: Analyzing trace with hash 1616822284, now seen corresponding path program 1 times [2024-11-13 14:56:36,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:56:36,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789076390] [2024-11-13 14:56:36,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:56:36,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:56:37,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:56:38,158 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:56:38,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:56:38,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789076390] [2024-11-13 14:56:38,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789076390] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:56:38,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:56:38,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-13 14:56:38,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330174376] [2024-11-13 14:56:38,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:56:38,159 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-13 14:56:38,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:56:38,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-13 14:56:38,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-13 14:56:38,161 INFO L87 Difference]: Start difference. First operand 214 states and 305 transitions. Second operand has 8 states, 8 states have (on average 15.75) internal successors, (126), 8 states have internal predecessors, (126), 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) [2024-11-13 14:56:38,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:56:38,332 INFO L93 Difference]: Finished difference Result 361 states and 514 transitions. [2024-11-13 14:56:38,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-13 14:56:38,333 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 15.75) internal successors, (126), 8 states have internal predecessors, (126), 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 126 [2024-11-13 14:56:38,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:56:38,335 INFO L225 Difference]: With dead ends: 361 [2024-11-13 14:56:38,335 INFO L226 Difference]: Without dead ends: 222 [2024-11-13 14:56:38,336 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-11-13 14:56:38,336 INFO L432 NwaCegarLoop]: 250 mSDtfsCounter, 220 mSDsluCounter, 993 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 1243 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:56:38,336 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [220 Valid, 1243 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 14:56:38,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2024-11-13 14:56:38,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 219. [2024-11-13 14:56:38,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 218 states have (on average 1.4220183486238531) internal successors, (310), 218 states have internal predecessors, (310), 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) [2024-11-13 14:56:38,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 310 transitions. [2024-11-13 14:56:38,350 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 310 transitions. Word has length 126 [2024-11-13 14:56:38,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:56:38,350 INFO L471 AbstractCegarLoop]: Abstraction has 219 states and 310 transitions. [2024-11-13 14:56:38,350 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.75) internal successors, (126), 8 states have internal predecessors, (126), 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) [2024-11-13 14:56:38,351 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 310 transitions. [2024-11-13 14:56:38,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2024-11-13 14:56:38,352 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:56:38,352 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 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, 1, 1, 1, 1] [2024-11-13 14:56:38,356 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-13 14:56:38,357 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:56:38,357 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:56:38,357 INFO L85 PathProgramCache]: Analyzing trace with hash 1926656290, now seen corresponding path program 1 times [2024-11-13 14:56:38,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:56:38,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154881960] [2024-11-13 14:56:38,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:56:38,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:56:38,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:56:38,914 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:56:38,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:56:38,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154881960] [2024-11-13 14:56:38,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154881960] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:56:38,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:56:38,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 14:56:38,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042142748] [2024-11-13 14:56:38,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:56:38,915 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 14:56:38,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:56:38,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 14:56:38,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:56:38,916 INFO L87 Difference]: Start difference. First operand 219 states and 310 transitions. Second operand has 5 states, 5 states have (on average 25.4) internal successors, (127), 5 states have internal predecessors, (127), 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) [2024-11-13 14:56:38,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:56:38,991 INFO L93 Difference]: Finished difference Result 397 states and 555 transitions. [2024-11-13 14:56:38,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 14:56:38,991 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.4) internal successors, (127), 5 states have internal predecessors, (127), 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 127 [2024-11-13 14:56:38,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:56:38,992 INFO L225 Difference]: With dead ends: 397 [2024-11-13 14:56:38,993 INFO L226 Difference]: Without dead ends: 253 [2024-11-13 14:56:38,993 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-13 14:56:38,993 INFO L432 NwaCegarLoop]: 255 mSDtfsCounter, 318 mSDsluCounter, 503 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 318 SdHoareTripleChecker+Valid, 758 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 14:56:38,994 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [318 Valid, 758 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 14:56:38,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2024-11-13 14:56:38,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 253. [2024-11-13 14:56:39,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 252 states have (on average 1.3928571428571428) internal successors, (351), 252 states have internal predecessors, (351), 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) [2024-11-13 14:56:39,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 351 transitions. [2024-11-13 14:56:39,001 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 351 transitions. Word has length 127 [2024-11-13 14:56:39,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:56:39,002 INFO L471 AbstractCegarLoop]: Abstraction has 253 states and 351 transitions. [2024-11-13 14:56:39,002 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.4) internal successors, (127), 5 states have internal predecessors, (127), 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) [2024-11-13 14:56:39,002 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 351 transitions. [2024-11-13 14:56:39,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2024-11-13 14:56:39,003 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:56:39,004 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 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, 1, 1, 1, 1] [2024-11-13 14:56:39,004 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-13 14:56:39,004 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:56:39,004 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:56:39,004 INFO L85 PathProgramCache]: Analyzing trace with hash 860795419, now seen corresponding path program 1 times [2024-11-13 14:56:39,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:56:39,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142119215] [2024-11-13 14:56:39,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:56:39,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:56:39,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:56:39,502 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:56:39,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:56:39,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142119215] [2024-11-13 14:56:39,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142119215] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:56:39,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:56:39,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 14:56:39,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044551753] [2024-11-13 14:56:39,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:56:39,504 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 14:56:39,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:56:39,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 14:56:39,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-13 14:56:39,507 INFO L87 Difference]: Start difference. First operand 253 states and 351 transitions. Second operand has 6 states, 6 states have (on average 21.166666666666668) internal successors, (127), 6 states have internal predecessors, (127), 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) [2024-11-13 14:56:39,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:56:39,834 INFO L93 Difference]: Finished difference Result 529 states and 739 transitions. [2024-11-13 14:56:39,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-13 14:56:39,835 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.166666666666668) internal successors, (127), 6 states have internal predecessors, (127), 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 127 [2024-11-13 14:56:39,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:56:39,837 INFO L225 Difference]: With dead ends: 529 [2024-11-13 14:56:39,838 INFO L226 Difference]: Without dead ends: 257 [2024-11-13 14:56:39,839 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-13 14:56:39,839 INFO L432 NwaCegarLoop]: 310 mSDtfsCounter, 99 mSDsluCounter, 1088 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 1398 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 14:56:39,843 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 1398 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 14:56:39,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2024-11-13 14:56:39,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 255. [2024-11-13 14:56:39,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 254 states have (on average 1.389763779527559) internal successors, (353), 254 states have internal predecessors, (353), 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) [2024-11-13 14:56:39,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 353 transitions. [2024-11-13 14:56:39,850 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 353 transitions. Word has length 127 [2024-11-13 14:56:39,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:56:39,851 INFO L471 AbstractCegarLoop]: Abstraction has 255 states and 353 transitions. [2024-11-13 14:56:39,851 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.166666666666668) internal successors, (127), 6 states have internal predecessors, (127), 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) [2024-11-13 14:56:39,851 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 353 transitions. [2024-11-13 14:56:39,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-11-13 14:56:39,852 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:56:39,852 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 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, 1, 1, 1, 1, 1] [2024-11-13 14:56:39,852 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-13 14:56:39,852 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:56:39,853 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:56:39,853 INFO L85 PathProgramCache]: Analyzing trace with hash 2075340069, now seen corresponding path program 1 times [2024-11-13 14:56:39,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:56:39,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731198361] [2024-11-13 14:56:39,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:56:39,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:56:40,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:56:40,850 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:56:40,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:56:40,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731198361] [2024-11-13 14:56:40,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731198361] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:56:40,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:56:40,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-13 14:56:40,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598857394] [2024-11-13 14:56:40,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:56:40,852 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 14:56:40,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:56:40,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 14:56:40,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-13 14:56:40,853 INFO L87 Difference]: Start difference. First operand 255 states and 353 transitions. Second operand has 7 states, 7 states have (on average 18.285714285714285) internal successors, (128), 7 states have internal predecessors, (128), 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) [2024-11-13 14:56:40,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:56:40,985 INFO L93 Difference]: Finished difference Result 443 states and 612 transitions. [2024-11-13 14:56:40,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 14:56:40,986 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.285714285714285) internal successors, (128), 7 states have internal predecessors, (128), 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 128 [2024-11-13 14:56:40,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:56:40,987 INFO L225 Difference]: With dead ends: 443 [2024-11-13 14:56:40,987 INFO L226 Difference]: Without dead ends: 297 [2024-11-13 14:56:40,988 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-11-13 14:56:40,989 INFO L432 NwaCegarLoop]: 255 mSDtfsCounter, 391 mSDsluCounter, 816 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 391 SdHoareTripleChecker+Valid, 1071 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:56:40,989 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [391 Valid, 1071 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 14:56:40,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2024-11-13 14:56:40,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 283. [2024-11-13 14:56:40,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 282 states have (on average 1.375886524822695) internal successors, (388), 282 states have internal predecessors, (388), 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) [2024-11-13 14:56:40,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 388 transitions. [2024-11-13 14:56:40,998 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 388 transitions. Word has length 128 [2024-11-13 14:56:40,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:56:40,998 INFO L471 AbstractCegarLoop]: Abstraction has 283 states and 388 transitions. [2024-11-13 14:56:40,998 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.285714285714285) internal successors, (128), 7 states have internal predecessors, (128), 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) [2024-11-13 14:56:40,998 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 388 transitions. [2024-11-13 14:56:40,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-13 14:56:41,000 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:56:41,000 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 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, 1, 1, 1, 1, 1, 1] [2024-11-13 14:56:41,000 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-13 14:56:41,000 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:56:41,000 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:56:41,001 INFO L85 PathProgramCache]: Analyzing trace with hash -1593329452, now seen corresponding path program 1 times [2024-11-13 14:56:41,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:56:41,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310303324] [2024-11-13 14:56:41,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:56:41,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:56:41,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:56:41,481 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:56:41,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:56:41,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310303324] [2024-11-13 14:56:41,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310303324] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:56:41,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:56:41,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 14:56:41,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560850544] [2024-11-13 14:56:41,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:56:41,484 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 14:56:41,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:56:41,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 14:56:41,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-13 14:56:41,485 INFO L87 Difference]: Start difference. First operand 283 states and 388 transitions. Second operand has 6 states, 6 states have (on average 21.5) internal successors, (129), 6 states have internal predecessors, (129), 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) [2024-11-13 14:56:41,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:56:41,846 INFO L93 Difference]: Finished difference Result 433 states and 598 transitions. [2024-11-13 14:56:41,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 14:56:41,847 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.5) internal successors, (129), 6 states have internal predecessors, (129), 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 129 [2024-11-13 14:56:41,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:56:41,848 INFO L225 Difference]: With dead ends: 433 [2024-11-13 14:56:41,849 INFO L226 Difference]: Without dead ends: 287 [2024-11-13 14:56:41,850 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-13 14:56:41,850 INFO L432 NwaCegarLoop]: 176 mSDtfsCounter, 262 mSDsluCounter, 516 mSDsCounter, 0 mSdLazyCounter, 361 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 692 SdHoareTripleChecker+Invalid, 362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 14:56:41,851 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [262 Valid, 692 Invalid, 362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 361 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 14:56:41,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2024-11-13 14:56:41,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 285. [2024-11-13 14:56:41,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 284 states have (on average 1.3732394366197183) internal successors, (390), 284 states have internal predecessors, (390), 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) [2024-11-13 14:56:41,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 390 transitions. [2024-11-13 14:56:41,859 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 390 transitions. Word has length 129 [2024-11-13 14:56:41,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:56:41,859 INFO L471 AbstractCegarLoop]: Abstraction has 285 states and 390 transitions. [2024-11-13 14:56:41,859 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.5) internal successors, (129), 6 states have internal predecessors, (129), 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) [2024-11-13 14:56:41,860 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 390 transitions. [2024-11-13 14:56:41,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-13 14:56:41,861 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:56:41,861 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 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, 1, 1, 1, 1, 1, 1] [2024-11-13 14:56:41,861 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-13 14:56:41,861 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:56:41,862 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:56:41,862 INFO L85 PathProgramCache]: Analyzing trace with hash -755647984, now seen corresponding path program 1 times [2024-11-13 14:56:41,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:56:41,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841314312] [2024-11-13 14:56:41,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:56:41,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:56:41,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:56:42,358 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:56:42,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:56:42,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841314312] [2024-11-13 14:56:42,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841314312] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:56:42,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:56:42,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 14:56:42,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039046252] [2024-11-13 14:56:42,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:56:42,359 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 14:56:42,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:56:42,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 14:56:42,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:56:42,360 INFO L87 Difference]: Start difference. First operand 285 states and 390 transitions. Second operand has 5 states, 5 states have (on average 25.8) internal successors, (129), 5 states have internal predecessors, (129), 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) [2024-11-13 14:56:42,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:56:42,541 INFO L93 Difference]: Finished difference Result 451 states and 620 transitions. [2024-11-13 14:56:42,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 14:56:42,542 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.8) internal successors, (129), 5 states have internal predecessors, (129), 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 129 [2024-11-13 14:56:42,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:56:42,543 INFO L225 Difference]: With dead ends: 451 [2024-11-13 14:56:42,543 INFO L226 Difference]: Without dead ends: 289 [2024-11-13 14:56:42,543 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:56:42,544 INFO L432 NwaCegarLoop]: 262 mSDtfsCounter, 0 mSDsluCounter, 684 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 946 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 14:56:42,544 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 946 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 14:56:42,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2024-11-13 14:56:42,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 289. [2024-11-13 14:56:42,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 288 states have (on average 1.3680555555555556) internal successors, (394), 288 states have internal predecessors, (394), 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) [2024-11-13 14:56:42,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 394 transitions. [2024-11-13 14:56:42,552 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 394 transitions. Word has length 129 [2024-11-13 14:56:42,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:56:42,552 INFO L471 AbstractCegarLoop]: Abstraction has 289 states and 394 transitions. [2024-11-13 14:56:42,552 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.8) internal successors, (129), 5 states have internal predecessors, (129), 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) [2024-11-13 14:56:42,553 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 394 transitions. [2024-11-13 14:56:42,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2024-11-13 14:56:42,554 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:56:42,554 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:56:42,554 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-13 14:56:42,554 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:56:42,555 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:56:42,555 INFO L85 PathProgramCache]: Analyzing trace with hash 844845758, now seen corresponding path program 1 times [2024-11-13 14:56:42,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:56:42,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681859711] [2024-11-13 14:56:42,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:56:42,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:56:42,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:56:43,212 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:56:43,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:56:43,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681859711] [2024-11-13 14:56:43,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681859711] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:56:43,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:56:43,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 14:56:43,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492780589] [2024-11-13 14:56:43,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:56:43,215 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 14:56:43,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:56:43,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 14:56:43,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:56:43,216 INFO L87 Difference]: Start difference. First operand 289 states and 394 transitions. Second operand has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 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) [2024-11-13 14:56:43,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:56:43,455 INFO L93 Difference]: Finished difference Result 439 states and 602 transitions. [2024-11-13 14:56:43,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 14:56:43,456 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 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 130 [2024-11-13 14:56:43,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:56:43,457 INFO L225 Difference]: With dead ends: 439 [2024-11-13 14:56:43,457 INFO L226 Difference]: Without dead ends: 289 [2024-11-13 14:56:43,457 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-13 14:56:43,458 INFO L432 NwaCegarLoop]: 173 mSDtfsCounter, 255 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 346 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 14:56:43,458 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [255 Valid, 346 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 14:56:43,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2024-11-13 14:56:43,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 289. [2024-11-13 14:56:43,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 288 states have (on average 1.3645833333333333) internal successors, (393), 288 states have internal predecessors, (393), 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) [2024-11-13 14:56:43,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 393 transitions. [2024-11-13 14:56:43,468 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 393 transitions. Word has length 130 [2024-11-13 14:56:43,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:56:43,469 INFO L471 AbstractCegarLoop]: Abstraction has 289 states and 393 transitions. [2024-11-13 14:56:43,469 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 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) [2024-11-13 14:56:43,469 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 393 transitions. [2024-11-13 14:56:43,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2024-11-13 14:56:43,470 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:56:43,470 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:56:43,471 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-13 14:56:43,471 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:56:43,471 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:56:43,471 INFO L85 PathProgramCache]: Analyzing trace with hash -1564721139, now seen corresponding path program 1 times [2024-11-13 14:56:43,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:56:43,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409677825] [2024-11-13 14:56:43,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:56:43,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:56:43,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:56:44,205 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:56:44,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:56:44,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409677825] [2024-11-13 14:56:44,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409677825] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:56:44,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:56:44,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 14:56:44,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808540366] [2024-11-13 14:56:44,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:56:44,208 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 14:56:44,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:56:44,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 14:56:44,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 14:56:44,211 INFO L87 Difference]: Start difference. First operand 289 states and 393 transitions. Second operand has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 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) [2024-11-13 14:56:44,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:56:44,447 INFO L93 Difference]: Finished difference Result 439 states and 600 transitions. [2024-11-13 14:56:44,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 14:56:44,448 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 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 131 [2024-11-13 14:56:44,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:56:44,449 INFO L225 Difference]: With dead ends: 439 [2024-11-13 14:56:44,449 INFO L226 Difference]: Without dead ends: 289 [2024-11-13 14:56:44,450 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:56:44,450 INFO L432 NwaCegarLoop]: 173 mSDtfsCounter, 186 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 14:56:44,451 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [186 Valid, 345 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 14:56:44,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2024-11-13 14:56:44,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 289. [2024-11-13 14:56:44,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 288 states have (on average 1.3611111111111112) internal successors, (392), 288 states have internal predecessors, (392), 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) [2024-11-13 14:56:44,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 392 transitions. [2024-11-13 14:56:44,462 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 392 transitions. Word has length 131 [2024-11-13 14:56:44,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:56:44,464 INFO L471 AbstractCegarLoop]: Abstraction has 289 states and 392 transitions. [2024-11-13 14:56:44,464 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 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) [2024-11-13 14:56:44,464 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 392 transitions. [2024-11-13 14:56:44,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2024-11-13 14:56:44,465 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:56:44,466 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:56:44,466 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-13 14:56:44,466 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:56:44,466 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:56:44,467 INFO L85 PathProgramCache]: Analyzing trace with hash -939340869, now seen corresponding path program 1 times [2024-11-13 14:56:44,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:56:44,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747711968] [2024-11-13 14:56:44,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:56:44,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:56:44,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:56:45,733 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 4 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:56:45,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:56:45,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747711968] [2024-11-13 14:56:45,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747711968] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:56:45,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [109602618] [2024-11-13 14:56:45,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:56:45,734 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:56:45,734 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd517167-e960-4fe3-ab01-052dac0dbb24/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:56:45,737 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd517167-e960-4fe3-ab01-052dac0dbb24/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:56:45,739 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd517167-e960-4fe3-ab01-052dac0dbb24/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 14:56:46,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:56:46,322 INFO L255 TraceCheckSpWp]: Trace formula consists of 826 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-13 14:56:46,335 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:56:46,891 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 16 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:56:46,892 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:56:47,558 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 16 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:56:47,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [109602618] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:56:47,559 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:56:47,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2024-11-13 14:56:47,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512639910] [2024-11-13 14:56:47,559 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:56:47,560 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-13 14:56:47,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:56:47,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-13 14:56:47,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=452, Unknown=0, NotChecked=0, Total=506 [2024-11-13 14:56:47,563 INFO L87 Difference]: Start difference. First operand 289 states and 392 transitions. Second operand has 23 states, 23 states have (on average 15.826086956521738) internal successors, (364), 23 states have internal predecessors, (364), 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) [2024-11-13 14:56:49,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:56:49,258 INFO L93 Difference]: Finished difference Result 985 states and 1329 transitions. [2024-11-13 14:56:49,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-11-13 14:56:49,258 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 15.826086956521738) internal successors, (364), 23 states have internal predecessors, (364), 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 132 [2024-11-13 14:56:49,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:56:49,261 INFO L225 Difference]: With dead ends: 985 [2024-11-13 14:56:49,261 INFO L226 Difference]: Without dead ends: 767 [2024-11-13 14:56:49,266 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 308 GetRequests, 252 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 638 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=425, Invalid=2881, Unknown=0, NotChecked=0, Total=3306 [2024-11-13 14:56:49,267 INFO L432 NwaCegarLoop]: 279 mSDtfsCounter, 1538 mSDsluCounter, 3731 mSDsCounter, 0 mSdLazyCounter, 594 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1538 SdHoareTripleChecker+Valid, 4010 SdHoareTripleChecker+Invalid, 604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 594 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-13 14:56:49,268 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1538 Valid, 4010 Invalid, 604 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 594 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-13 14:56:49,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 767 states. [2024-11-13 14:56:49,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 767 to 569. [2024-11-13 14:56:49,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 569 states, 568 states have (on average 1.3785211267605635) internal successors, (783), 568 states have internal predecessors, (783), 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) [2024-11-13 14:56:49,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 569 states to 569 states and 783 transitions. [2024-11-13 14:56:49,287 INFO L78 Accepts]: Start accepts. Automaton has 569 states and 783 transitions. Word has length 132 [2024-11-13 14:56:49,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:56:49,288 INFO L471 AbstractCegarLoop]: Abstraction has 569 states and 783 transitions. [2024-11-13 14:56:49,288 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 15.826086956521738) internal successors, (364), 23 states have internal predecessors, (364), 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) [2024-11-13 14:56:49,288 INFO L276 IsEmpty]: Start isEmpty. Operand 569 states and 783 transitions. [2024-11-13 14:56:49,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2024-11-13 14:56:49,290 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:56:49,290 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:56:49,313 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd517167-e960-4fe3-ab01-052dac0dbb24/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-13 14:56:49,494 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd517167-e960-4fe3-ab01-052dac0dbb24/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-13 14:56:49,495 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:56:49,495 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:56:49,495 INFO L85 PathProgramCache]: Analyzing trace with hash -558065957, now seen corresponding path program 1 times [2024-11-13 14:56:49,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:56:49,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407138310] [2024-11-13 14:56:49,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:56:49,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:56:49,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:56:50,277 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 17 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:56:50,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:56:50,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407138310] [2024-11-13 14:56:50,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407138310] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:56:50,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1667673661] [2024-11-13 14:56:50,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:56:50,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:56:50,278 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd517167-e960-4fe3-ab01-052dac0dbb24/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:56:50,280 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd517167-e960-4fe3-ab01-052dac0dbb24/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:56:50,281 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd517167-e960-4fe3-ab01-052dac0dbb24/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 14:56:50,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:56:50,866 INFO L255 TraceCheckSpWp]: Trace formula consists of 828 conjuncts, 108 conjuncts are in the unsatisfiable core [2024-11-13 14:56:50,880 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:56:52,956 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 12 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:56:52,957 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:56:56,973 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 7 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:56:56,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1667673661] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:56:56,975 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:56:56,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 21, 24] total 47 [2024-11-13 14:56:56,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717701439] [2024-11-13 14:56:56,975 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:56:56,977 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2024-11-13 14:56:56,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:56:56,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2024-11-13 14:56:56,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=207, Invalid=1955, Unknown=0, NotChecked=0, Total=2162 [2024-11-13 14:56:56,980 INFO L87 Difference]: Start difference. First operand 569 states and 783 transitions. Second operand has 47 states, 47 states have (on average 8.085106382978724) internal successors, (380), 47 states have internal predecessors, (380), 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) [2024-11-13 14:57:03,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:57:03,959 INFO L93 Difference]: Finished difference Result 1230 states and 1675 transitions. [2024-11-13 14:57:03,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2024-11-13 14:57:03,960 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 8.085106382978724) internal successors, (380), 47 states have internal predecessors, (380), 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 134 [2024-11-13 14:57:03,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:57:03,960 INFO L225 Difference]: With dead ends: 1230 [2024-11-13 14:57:03,960 INFO L226 Difference]: Without dead ends: 0 [2024-11-13 14:57:03,966 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 227 SyntacticMatches, 1 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4018 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=1341, Invalid=13179, Unknown=0, NotChecked=0, Total=14520 [2024-11-13 14:57:03,968 INFO L432 NwaCegarLoop]: 170 mSDtfsCounter, 1961 mSDsluCounter, 4538 mSDsCounter, 0 mSdLazyCounter, 3649 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1961 SdHoareTripleChecker+Valid, 4708 SdHoareTripleChecker+Invalid, 3682 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 3649 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-11-13 14:57:03,968 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1961 Valid, 4708 Invalid, 3682 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 3649 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-11-13 14:57:03,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-13 14:57:03,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-13 14:57:03,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:57:03,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-13 14:57:03,969 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 134 [2024-11-13 14:57:03,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:57:03,969 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-13 14:57:03,969 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 8.085106382978724) internal successors, (380), 47 states have internal predecessors, (380), 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) [2024-11-13 14:57:03,969 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-13 14:57:03,973 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-13 14:57:03,975 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-13 14:57:03,998 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd517167-e960-4fe3-ab01-052dac0dbb24/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-13 14:57:04,180 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd517167-e960-4fe3-ab01-052dac0dbb24/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-13 14:57:04,182 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:57:04,184 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-13 14:57:04,350 INFO L173 ceAbstractionStarter]: Computing trace abstraction results [2024-11-13 14:57:04,372 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.11 02:57:04 BoogieIcfgContainer [2024-11-13 14:57:04,372 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-13 14:57:04,373 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-13 14:57:04,373 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-13 14:57:04,374 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-13 14:57:04,374 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:56:29" (3/4) ... [2024-11-13 14:57:04,377 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-13 14:57:04,400 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2024-11-13 14:57:04,401 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2024-11-13 14:57:04,402 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-11-13 14:57:04,403 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-13 14:57:04,404 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-13 14:57:04,479 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.witnessprinter has thrown an exception: java.lang.NullPointerException: Cannot invoke "org.eclipse.cdt.core.dom.ast.IASTNode.getRawSignature()" because "" is null at de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSLBacktranslationValueProvider.getStringFromIASTNode(CACSLBacktranslationValueProvider.java:80) at de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSLBacktranslationValueProvider.getStringFromStep(CACSLBacktranslationValueProvider.java:61) at de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSLBacktranslationValueProvider.getStringFromStep(CACSLBacktranslationValueProvider.java:1) at de.uni_freiburg.informatik.ultimate.witnessprinter.graphml.GeneratedWitnessEdge.getSourceCode(GeneratedWitnessEdge.java:156) at de.uni_freiburg.informatik.ultimate.witnessprinter.graphml.GraphMLCorrectnessWitnessGenerator.lambda$2(GraphMLCorrectnessWitnessGenerator.java:91) at edu.uci.ics.jung.io.GraphMLWriter.writeEdgeData(GraphMLWriter.java:237) at de.uni_freiburg.informatik.ultimate.witnessprinter.graphml.UltimateGraphMLWriter.save(UltimateGraphMLWriter.java:106) at de.uni_freiburg.informatik.ultimate.witnessprinter.graphml.GraphMLCorrectnessWitnessGenerator.makeGraphMLString(GraphMLCorrectnessWitnessGenerator.java:111) at de.uni_freiburg.informatik.ultimate.witnessprinter.WitnessPrinter.generateProofWitness(WitnessPrinter.java:168) at de.uni_freiburg.informatik.ultimate.witnessprinter.WitnessPrinter.finish(WitnessPrinter.java:143) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:130) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-13 14:57:04,484 INFO L158 Benchmark]: Toolchain (without parser) took 37251.07ms. Allocated memory was 142.6MB in the beginning and 755.0MB in the end (delta: 612.4MB). Free memory was 117.9MB in the beginning and 468.5MB in the end (delta: -350.7MB). Peak memory consumption was 259.9MB. Max. memory is 16.1GB. [2024-11-13 14:57:04,486 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 142.6MB. Free memory is still 81.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 14:57:04,486 INFO L158 Benchmark]: CACSL2BoogieTranslator took 442.28ms. Allocated memory is still 142.6MB. Free memory was 117.6MB in the beginning and 96.4MB in the end (delta: 21.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-13 14:57:04,487 INFO L158 Benchmark]: Boogie Procedure Inliner took 106.94ms. Allocated memory is still 142.6MB. Free memory was 96.4MB in the beginning and 80.8MB in the end (delta: 15.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-13 14:57:04,487 INFO L158 Benchmark]: Boogie Preprocessor took 163.14ms. Allocated memory is still 142.6MB. Free memory was 80.8MB in the beginning and 71.7MB in the end (delta: 9.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-13 14:57:04,487 INFO L158 Benchmark]: RCFGBuilder took 1658.79ms. Allocated memory was 142.6MB in the beginning and 427.8MB in the end (delta: 285.2MB). Free memory was 71.4MB in the beginning and 367.1MB in the end (delta: -295.7MB). Peak memory consumption was 45.5MB. Max. memory is 16.1GB. [2024-11-13 14:57:04,488 INFO L158 Benchmark]: TraceAbstraction took 34762.74ms. Allocated memory was 427.8MB in the beginning and 755.0MB in the end (delta: 327.2MB). Free memory was 366.6MB in the beginning and 472.8MB in the end (delta: -106.2MB). Peak memory consumption was 220.9MB. Max. memory is 16.1GB. [2024-11-13 14:57:04,488 INFO L158 Benchmark]: Witness Printer took 110.87ms. Allocated memory is still 755.0MB. Free memory was 472.8MB in the beginning and 468.5MB in the end (delta: 4.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-13 14:57:04,489 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 142.6MB. Free memory is still 81.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 442.28ms. Allocated memory is still 142.6MB. Free memory was 117.6MB in the beginning and 96.4MB in the end (delta: 21.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 106.94ms. Allocated memory is still 142.6MB. Free memory was 96.4MB in the beginning and 80.8MB in the end (delta: 15.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 163.14ms. Allocated memory is still 142.6MB. Free memory was 80.8MB in the beginning and 71.7MB in the end (delta: 9.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 1658.79ms. Allocated memory was 142.6MB in the beginning and 427.8MB in the end (delta: 285.2MB). Free memory was 71.4MB in the beginning and 367.1MB in the end (delta: -295.7MB). Peak memory consumption was 45.5MB. Max. memory is 16.1GB. * TraceAbstraction took 34762.74ms. Allocated memory was 427.8MB in the beginning and 755.0MB in the end (delta: 327.2MB). Free memory was 366.6MB in the beginning and 472.8MB in the end (delta: -106.2MB). Peak memory consumption was 220.9MB. Max. memory is 16.1GB. * Witness Printer took 110.87ms. Allocated memory is still 755.0MB. Free memory was 472.8MB in the beginning and 468.5MB in the end (delta: 4.3MB). Peak memory consumption was 8.4MB. 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 - PositiveResult [Line: 21]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 182 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 34.5s, OverallIterations: 23, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 11.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 6837 SdHoareTripleChecker+Valid, 5.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 6837 mSDsluCounter, 26744 SdHoareTripleChecker+Invalid, 4.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 21055 mSDsCounter, 61 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5757 IncrementalHoareTripleChecker+Invalid, 5818 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 61 mSolverCounterUnsat, 5689 mSDtfsCounter, 5757 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 804 GetRequests, 531 SyntacticMatches, 1 SemanticMatches, 272 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4693 ImplicationChecksByTransitivity, 8.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=569occurred in iteration=22, InterpolantAutomatonStates: 225, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 23 MinimizatonAttempts, 436 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 3.1s SatisfiabilityAnalysisTime, 17.2s InterpolantComputationTime, 2445 NumberOfCodeBlocks, 2445 NumberOfCodeBlocksAsserted, 25 NumberOfCheckSat, 2684 ConstructedInterpolants, 0 QuantifiedInterpolants, 13114 SizeOfPredicates, 17 NumberOfNonLiveVariables, 1654 ConjunctsInSsa, 148 ConjunctsInUnsatCore, 27 InterpolantComputations, 21 PerfectInterpolantSequences, 309/381 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 104]: Loop Invariant Derived loop invariant: (((((var_5 == 0) && (var_13 == 1)) && (mask_SORT_1 == 0)) || ((((var_5 == 0) && ((((short) state_14 + 1) % 256) <= 0)) && (var_13 == 1)) && (mask_SORT_1 == 1))) || (((((((((((state_18 == 0) && (state_29 == 0)) && (var_5 == 0)) && ((((short) state_45 + 2) % 256) != 0)) && (state_22 == 0)) && (var_13 == 1)) && (state_33 == 0)) && (state_6 == 0)) && (mask_SORT_1 == 1)) && (state_14 == 1)) && (state_9 == 0))) * Results from de.uni_freiburg.informatik.ultimate.witnessprinter: - ExceptionOrErrorResult: NullPointerException: Cannot invoke "org.eclipse.cdt.core.dom.ast.IASTNode.getRawSignature()" because "" is null de.uni_freiburg.informatik.ultimate.witnessprinter: NullPointerException: Cannot invoke "org.eclipse.cdt.core.dom.ast.IASTNode.getRawSignature()" because "" is null: de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSLBacktranslationValueProvider.getStringFromIASTNode(CACSLBacktranslationValueProvider.java:80) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2024-11-13 14:57:04,523 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd517167-e960-4fe3-ab01-052dac0dbb24/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd517167-e960-4fe3-ab01-052dac0dbb24/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd517167-e960-4fe3-ab01-052dac0dbb24/bin/uautomizer-verify-qhAvR1uOyd/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd517167-e960-4fe3-ab01-052dac0dbb24/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd517167-e960-4fe3-ab01-052dac0dbb24/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.zaher.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd517167-e960-4fe3-ab01-052dac0dbb24/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd517167-e960-4fe3-ab01-052dac0dbb24/bin/uautomizer-verify-qhAvR1uOyd --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 64bit --witnessprinter.graph.data.programhash 6fd8c0f78f1a02f0110655a19aab6ed326f45dcdd8f1755f6a67e81d29b9a49c --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 14:57:07,084 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 14:57:07,202 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd517167-e960-4fe3-ab01-052dac0dbb24/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2024-11-13 14:57:07,211 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 14:57:07,212 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 14:57:07,271 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 14:57:07,272 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 14:57:07,272 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 14:57:07,273 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 14:57:07,273 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 14:57:07,273 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 14:57:07,273 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 14:57:07,279 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 14:57:07,279 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 14:57:07,279 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 14:57:07,279 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 14:57:07,279 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 14:57:07,279 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 14:57:07,279 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 14:57:07,280 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 14:57:07,280 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 14:57:07,280 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-13 14:57:07,280 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-13 14:57:07,280 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 14:57:07,280 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-13 14:57:07,280 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 14:57:07,280 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 14:57:07,280 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 14:57:07,281 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 14:57:07,281 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 14:57:07,281 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 14:57:07,281 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 14:57:07,281 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 14:57:07,281 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 14:57:07,286 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 14:57:07,287 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2024-11-13 14:57:07,287 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-13 14:57:07,287 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 14:57:07,287 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 14:57:07,287 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 14:57:07,287 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 14:57:07,287 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 -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd517167-e960-4fe3-ab01-052dac0dbb24/bin/uautomizer-verify-qhAvR1uOyd 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 -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6fd8c0f78f1a02f0110655a19aab6ed326f45dcdd8f1755f6a67e81d29b9a49c [2024-11-13 14:57:07,625 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 14:57:07,633 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 14:57:07,635 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 14:57:07,636 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 14:57:07,637 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 14:57:07,638 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd517167-e960-4fe3-ab01-052dac0dbb24/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.zaher.c Unable to find full path for "g++" [2024-11-13 14:57:09,583 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 14:57:09,928 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 14:57:09,928 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd517167-e960-4fe3-ab01-052dac0dbb24/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.zaher.c [2024-11-13 14:57:09,948 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd517167-e960-4fe3-ab01-052dac0dbb24/bin/uautomizer-verify-qhAvR1uOyd/data/997ab057d/2707a744493242e09cde4fca38be0fad/FLAG0da15eea9 [2024-11-13 14:57:10,188 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd517167-e960-4fe3-ab01-052dac0dbb24/bin/uautomizer-verify-qhAvR1uOyd/data/997ab057d/2707a744493242e09cde4fca38be0fad [2024-11-13 14:57:10,190 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 14:57:10,193 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 14:57:10,194 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 14:57:10,195 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 14:57:10,200 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 14:57:10,201 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:57:10" (1/1) ... [2024-11-13 14:57:10,204 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e1dd5b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:57:10, skipping insertion in model container [2024-11-13 14:57:10,204 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:57:10" (1/1) ... [2024-11-13 14:57:10,238 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 14:57:10,400 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_fd517167-e960-4fe3-ab01-052dac0dbb24/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.zaher.c[1245,1258] [2024-11-13 14:57:10,501 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 14:57:10,513 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 14:57:10,525 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_fd517167-e960-4fe3-ab01-052dac0dbb24/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.zaher.c[1245,1258] [2024-11-13 14:57:10,596 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 14:57:10,613 INFO L204 MainTranslator]: Completed translation [2024-11-13 14:57:10,614 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:57:10 WrapperNode [2024-11-13 14:57:10,614 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 14:57:10,615 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 14:57:10,615 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 14:57:10,615 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 14:57:10,622 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:57:10" (1/1) ... [2024-11-13 14:57:10,634 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:57:10" (1/1) ... [2024-11-13 14:57:10,675 INFO L138 Inliner]: procedures = 17, calls = 16, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 433 [2024-11-13 14:57:10,675 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 14:57:10,676 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 14:57:10,676 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 14:57:10,676 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 14:57:10,684 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:57:10" (1/1) ... [2024-11-13 14:57:10,684 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:57:10" (1/1) ... [2024-11-13 14:57:10,695 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:57:10" (1/1) ... [2024-11-13 14:57:10,718 INFO L175 MemorySlicer]: Split 10 memory accesses to 2 slices as follows [2, 8]. 80 percent of accesses are in the largest equivalence class. The 10 initializations are split as follows [2, 8]. The 0 writes are split as follows [0, 0]. [2024-11-13 14:57:10,719 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:57:10" (1/1) ... [2024-11-13 14:57:10,719 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:57:10" (1/1) ... [2024-11-13 14:57:10,730 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:57:10" (1/1) ... [2024-11-13 14:57:10,733 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:57:10" (1/1) ... [2024-11-13 14:57:10,735 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:57:10" (1/1) ... [2024-11-13 14:57:10,737 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:57:10" (1/1) ... [2024-11-13 14:57:10,741 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 14:57:10,742 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 14:57:10,742 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 14:57:10,742 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 14:57:10,743 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:57:10" (1/1) ... [2024-11-13 14:57:10,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 14:57:10,774 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd517167-e960-4fe3-ab01-052dac0dbb24/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:57:10,787 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd517167-e960-4fe3-ab01-052dac0dbb24/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 14:57:10,791 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd517167-e960-4fe3-ab01-052dac0dbb24/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 14:57:10,818 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 14:57:10,818 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-13 14:57:10,819 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-11-13 14:57:10,819 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 14:57:10,819 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 14:57:11,051 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 14:57:11,052 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 14:57:11,556 INFO L? ?]: Removed 74 outVars from TransFormulas that were not future-live. [2024-11-13 14:57:11,557 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 14:57:11,566 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 14:57:11,567 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-13 14:57:11,567 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:57:11 BoogieIcfgContainer [2024-11-13 14:57:11,567 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 14:57:11,570 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 14:57:11,571 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 14:57:11,575 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 14:57:11,575 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 02:57:10" (1/3) ... [2024-11-13 14:57:11,576 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48be8411 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:57:11, skipping insertion in model container [2024-11-13 14:57:11,576 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:57:10" (2/3) ... [2024-11-13 14:57:11,576 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48be8411 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:57:11, skipping insertion in model container [2024-11-13 14:57:11,577 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:57:11" (3/3) ... [2024-11-13 14:57:11,578 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.zaher.c [2024-11-13 14:57:11,592 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 14:57:11,594 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG btor2c-lazyMod.zaher.c that has 1 procedures, 10 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-13 14:57:11,633 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 14:57:11,645 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;@64cde575, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 14:57:11,645 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-13 14:57:11,648 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) [2024-11-13 14:57:11,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-11-13 14:57:11,653 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:57:11,654 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-11-13 14:57:11,655 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:57:11,659 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:57:11,659 INFO L85 PathProgramCache]: Analyzing trace with hash 28694789, now seen corresponding path program 1 times [2024-11-13 14:57:11,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:57:11,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1985623525] [2024-11-13 14:57:11,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:57:11,670 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:57:11,670 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd517167-e960-4fe3-ab01-052dac0dbb24/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:57:11,676 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd517167-e960-4fe3-ab01-052dac0dbb24/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:57:11,677 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd517167-e960-4fe3-ab01-052dac0dbb24/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 14:57:11,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:57:11,907 INFO L255 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-13 14:57:11,919 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:57:12,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:57:12,167 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:57:12,168 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:57:12,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1985623525] [2024-11-13 14:57:12,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1985623525] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:57:12,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:57:12,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 14:57:12,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286891371] [2024-11-13 14:57:12,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:57:12,178 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 14:57:12,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:57:12,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 14:57:12,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 14:57:12,203 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) [2024-11-13 14:57:12,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:57:12,279 INFO L93 Difference]: Finished difference Result 18 states and 23 transitions. [2024-11-13 14:57:12,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 14:57:12,282 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 [2024-11-13 14:57:12,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:57:12,288 INFO L225 Difference]: With dead ends: 18 [2024-11-13 14:57:12,288 INFO L226 Difference]: Without dead ends: 10 [2024-11-13 14:57:12,291 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:57:12,295 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 [2024-11-13 14:57:12,297 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] [2024-11-13 14:57:12,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2024-11-13 14:57:12,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2024-11-13 14:57:12,322 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) [2024-11-13 14:57:12,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2024-11-13 14:57:12,327 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2024-11-13 14:57:12,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:57:12,328 INFO L471 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2024-11-13 14:57:12,328 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) [2024-11-13 14:57:12,328 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2024-11-13 14:57:12,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-13 14:57:12,329 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:57:12,329 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2024-11-13 14:57:12,350 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd517167-e960-4fe3-ab01-052dac0dbb24/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-13 14:57:12,529 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd517167-e960-4fe3-ab01-052dac0dbb24/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:57:12,530 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:57:12,530 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:57:12,530 INFO L85 PathProgramCache]: Analyzing trace with hash 152739811, now seen corresponding path program 1 times [2024-11-13 14:57:12,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:57:12,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [845441269] [2024-11-13 14:57:12,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:57:12,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:57:12,532 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd517167-e960-4fe3-ab01-052dac0dbb24/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:57:12,535 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd517167-e960-4fe3-ab01-052dac0dbb24/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:57:12,536 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd517167-e960-4fe3-ab01-052dac0dbb24/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 14:57:12,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:57:12,802 INFO L255 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-13 14:57:12,811 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:57:13,163 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:57:13,164 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:57:36,302 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:57:36,303 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:57:36,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [845441269] [2024-11-13 14:57:36,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [845441269] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:57:36,303 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 14:57:36,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2024-11-13 14:57:36,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759959249] [2024-11-13 14:57:36,304 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 14:57:36,305 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-13 14:57:36,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:57:36,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-13 14:57:36,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=60, Unknown=5, NotChecked=0, Total=90 [2024-11-13 14:57:36,306 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 10 states, 10 states have (on average 1.4) internal successors, (14), 10 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:57:45,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:57:45,813 INFO L93 Difference]: Finished difference Result 10 states and 10 transitions. [2024-11-13 14:57:45,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 14:57:45,814 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.4) internal successors, (14), 10 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-11-13 14:57:45,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:57:45,814 INFO L225 Difference]: With dead ends: 10 [2024-11-13 14:57:45,814 INFO L226 Difference]: Without dead ends: 0 [2024-11-13 14:57:45,815 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 32.4s TimeCoverageRelationStatistics Valid=62, Invalid=113, Unknown=7, NotChecked=0, Total=182 [2024-11-13 14:57:45,815 INFO L432 NwaCegarLoop]: 2 mSDtfsCounter, 6 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:57:45,816 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 9 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 14:57:45,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-13 14:57:45,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-13 14:57:45,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:57:45,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-13 14:57:45,817 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 8 [2024-11-13 14:57:45,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:57:45,817 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-13 14:57:45,817 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.4) internal successors, (14), 10 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:57:45,817 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-13 14:57:45,818 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-13 14:57:45,821 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-13 14:57:45,842 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd517167-e960-4fe3-ab01-052dac0dbb24/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-13 14:57:46,022 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd517167-e960-4fe3-ab01-052dac0dbb24/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:57:46,025 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-13 14:57:46,026 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-13 14:57:46,084 INFO L173 ceAbstractionStarter]: Computing trace abstraction results [2024-11-13 14:57:46,094 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression [2024-11-13 14:57:46,098 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.11 02:57:46 BoogieIcfgContainer [2024-11-13 14:57:46,098 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-13 14:57:46,099 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-13 14:57:46,099 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-13 14:57:46,099 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-13 14:57:46,100 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:57:11" (3/4) ... [2024-11-13 14:57:46,102 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-13 14:57:46,112 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2024-11-13 14:57:46,113 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2024-11-13 14:57:46,114 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-11-13 14:57:46,114 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-13 14:57:46,115 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-13 14:57:46,153 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.witnessprinter has thrown an exception: java.lang.NullPointerException: Cannot invoke "org.eclipse.cdt.core.dom.ast.IASTNode.getRawSignature()" because "" is null at de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSLBacktranslationValueProvider.getStringFromIASTNode(CACSLBacktranslationValueProvider.java:80) at de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSLBacktranslationValueProvider.getStringFromStep(CACSLBacktranslationValueProvider.java:61) at de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSLBacktranslationValueProvider.getStringFromStep(CACSLBacktranslationValueProvider.java:1) at de.uni_freiburg.informatik.ultimate.witnessprinter.graphml.GeneratedWitnessEdge.getSourceCode(GeneratedWitnessEdge.java:156) at de.uni_freiburg.informatik.ultimate.witnessprinter.graphml.GraphMLCorrectnessWitnessGenerator.lambda$2(GraphMLCorrectnessWitnessGenerator.java:91) at edu.uci.ics.jung.io.GraphMLWriter.writeEdgeData(GraphMLWriter.java:237) at de.uni_freiburg.informatik.ultimate.witnessprinter.graphml.UltimateGraphMLWriter.save(UltimateGraphMLWriter.java:106) at de.uni_freiburg.informatik.ultimate.witnessprinter.graphml.GraphMLCorrectnessWitnessGenerator.makeGraphMLString(GraphMLCorrectnessWitnessGenerator.java:111) at de.uni_freiburg.informatik.ultimate.witnessprinter.WitnessPrinter.generateProofWitness(WitnessPrinter.java:168) at de.uni_freiburg.informatik.ultimate.witnessprinter.WitnessPrinter.finish(WitnessPrinter.java:143) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:130) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-13 14:57:46,156 INFO L158 Benchmark]: Toolchain (without parser) took 35965.05ms. Allocated memory was 117.4MB in the beginning and 268.4MB in the end (delta: 151.0MB). Free memory was 92.2MB in the beginning and 202.7MB in the end (delta: -110.5MB). Peak memory consumption was 41.2MB. Max. memory is 16.1GB. [2024-11-13 14:57:46,157 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 117.4MB. Free memory is still 84.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 14:57:46,157 INFO L158 Benchmark]: CACSL2BoogieTranslator took 420.29ms. Allocated memory is still 117.4MB. Free memory was 92.2MB in the beginning and 72.4MB in the end (delta: 19.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-13 14:57:46,157 INFO L158 Benchmark]: Boogie Procedure Inliner took 60.39ms. Allocated memory is still 117.4MB. Free memory was 72.4MB in the beginning and 69.0MB in the end (delta: 3.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-13 14:57:46,158 INFO L158 Benchmark]: Boogie Preprocessor took 65.71ms. Allocated memory is still 117.4MB. Free memory was 69.0MB in the beginning and 65.1MB in the end (delta: 3.9MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 14:57:46,158 INFO L158 Benchmark]: RCFGBuilder took 825.45ms. Allocated memory is still 117.4MB. Free memory was 65.1MB in the beginning and 60.0MB in the end (delta: 5.1MB). Peak memory consumption was 22.3MB. Max. memory is 16.1GB. [2024-11-13 14:57:46,158 INFO L158 Benchmark]: TraceAbstraction took 34528.15ms. Allocated memory was 117.4MB in the beginning and 268.4MB in the end (delta: 151.0MB). Free memory was 59.5MB in the beginning and 208.5MB in the end (delta: -149.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-13 14:57:46,159 INFO L158 Benchmark]: Witness Printer took 56.68ms. Allocated memory is still 268.4MB. Free memory was 208.5MB in the beginning and 202.7MB in the end (delta: 5.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-13 14:57:46,160 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 117.4MB. Free memory is still 84.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 420.29ms. Allocated memory is still 117.4MB. Free memory was 92.2MB in the beginning and 72.4MB in the end (delta: 19.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 60.39ms. Allocated memory is still 117.4MB. Free memory was 72.4MB in the beginning and 69.0MB in the end (delta: 3.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 65.71ms. Allocated memory is still 117.4MB. Free memory was 69.0MB in the beginning and 65.1MB in the end (delta: 3.9MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 825.45ms. Allocated memory is still 117.4MB. Free memory was 65.1MB in the beginning and 60.0MB in the end (delta: 5.1MB). Peak memory consumption was 22.3MB. Max. memory is 16.1GB. * TraceAbstraction took 34528.15ms. Allocated memory was 117.4MB in the beginning and 268.4MB in the end (delta: 151.0MB). Free memory was 59.5MB in the beginning and 208.5MB in the end (delta: -149.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Witness Printer took 56.68ms. Allocated memory is still 268.4MB. Free memory was 208.5MB in the beginning and 202.7MB in the end (delta: 5.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 21]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 10 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 34.4s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 9.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 8 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 8 mSDsluCounter, 20 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 14 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 31 IncrementalHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 6 mSDtfsCounter, 31 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 32.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10occurred in iteration=0, InterpolantAutomatonStates: 10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 23.8s InterpolantComputationTime, 13 NumberOfCodeBlocks, 13 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 18 ConstructedInterpolants, 4 QuantifiedInterpolants, 285 SizeOfPredicates, 6 NumberOfNonLiveVariables, 291 ConjunctsInSsa, 52 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 0/4 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 104]: Loop Invariant Derived loop invariant: ((((((1 + state_14) % 256) == 0) && (1 == mask_SORT_1)) && (0 == var_5)) || (((1 == mask_SORT_1) && (0 == var_5)) && (0 == state_22))) * Results from de.uni_freiburg.informatik.ultimate.witnessprinter: - ExceptionOrErrorResult: NullPointerException: Cannot invoke "org.eclipse.cdt.core.dom.ast.IASTNode.getRawSignature()" because "" is null de.uni_freiburg.informatik.ultimate.witnessprinter: NullPointerException: Cannot invoke "org.eclipse.cdt.core.dom.ast.IASTNode.getRawSignature()" because "" is null: de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSLBacktranslationValueProvider.getStringFromIASTNode(CACSLBacktranslationValueProvider.java:80) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2024-11-13 14:57:46,318 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd517167-e960-4fe3-ab01-052dac0dbb24/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: NullPointerException: Cannot invoke "org.eclipse.cdt.core.dom.ast.IASTNode.getRawSignature()" because "" is null