./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e384acfc-065f-480f-8e9b-ed6749a2706a/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e384acfc-065f-480f-8e9b-ed6749a2706a/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e384acfc-065f-480f-8e9b-ed6749a2706a/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e384acfc-065f-480f-8e9b-ed6749a2706a/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e384acfc-065f-480f-8e9b-ed6749a2706a/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e384acfc-065f-480f-8e9b-ed6749a2706a/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 503e46fe74670dc8b1fd2e8b2c5a408fc01c83cb421ff9aefb8796417315d291 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:18:24,456 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:18:24,579 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e384acfc-065f-480f-8e9b-ed6749a2706a/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-06 22:18:24,588 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:18:24,589 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:18:24,637 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:18:24,638 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:18:24,638 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:18:24,639 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:18:24,644 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:18:24,646 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:18:24,646 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:18:24,647 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:18:24,649 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:18:24,650 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:18:24,650 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:18:24,650 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:18:24,651 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:18:24,651 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-06 22:18:24,652 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-06 22:18:24,652 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-06 22:18:24,653 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:18:24,654 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-06 22:18:24,654 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 22:18:24,655 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:18:24,655 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:18:24,656 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:18:24,657 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:18:24,657 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:18:24,658 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:18:24,659 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:18:24,659 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:18:24,660 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:18:24,660 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:18:24,660 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:18:24,661 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:18:24,661 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:18:24,661 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:18:24,662 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e384acfc-065f-480f-8e9b-ed6749a2706a/bin/uautomizer-verify-WvqO1wxjHP/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e384acfc-065f-480f-8e9b-ed6749a2706a/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 503e46fe74670dc8b1fd2e8b2c5a408fc01c83cb421ff9aefb8796417315d291 [2023-11-06 22:18:25,047 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:18:25,079 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:18:25,082 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:18:25,083 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:18:25,084 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:18:25,085 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e384acfc-065f-480f-8e9b-ed6749a2706a/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i [2023-11-06 22:18:28,104 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:18:28,495 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:18:28,496 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e384acfc-065f-480f-8e9b-ed6749a2706a/sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i [2023-11-06 22:18:28,517 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e384acfc-065f-480f-8e9b-ed6749a2706a/bin/uautomizer-verify-WvqO1wxjHP/data/61c08d928/c106470e2c024bdab69de5894a8480a2/FLAGe77c3ea43 [2023-11-06 22:18:28,539 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e384acfc-065f-480f-8e9b-ed6749a2706a/bin/uautomizer-verify-WvqO1wxjHP/data/61c08d928/c106470e2c024bdab69de5894a8480a2 [2023-11-06 22:18:28,545 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:18:28,548 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:18:28,552 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:18:28,552 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:18:28,558 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:18:28,559 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:18:28" (1/1) ... [2023-11-06 22:18:28,560 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@458ff481 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:18:28, skipping insertion in model container [2023-11-06 22:18:28,560 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:18:28" (1/1) ... [2023-11-06 22:18:28,624 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:18:28,968 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:18:28,978 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:18:29,020 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:18:29,052 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:18:29,053 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:18:29 WrapperNode [2023-11-06 22:18:29,053 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:18:29,054 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:18:29,055 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:18:29,055 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:18:29,062 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:18:29" (1/1) ... [2023-11-06 22:18:29,095 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:18:29" (1/1) ... [2023-11-06 22:18:29,135 INFO L138 Inliner]: procedures = 119, calls = 50, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 166 [2023-11-06 22:18:29,135 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:18:29,136 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:18:29,136 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:18:29,137 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:18:29,147 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:18:29" (1/1) ... [2023-11-06 22:18:29,148 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:18:29" (1/1) ... [2023-11-06 22:18:29,167 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:18:29" (1/1) ... [2023-11-06 22:18:29,171 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:18:29" (1/1) ... [2023-11-06 22:18:29,181 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:18:29" (1/1) ... [2023-11-06 22:18:29,196 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:18:29" (1/1) ... [2023-11-06 22:18:29,199 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:18:29" (1/1) ... [2023-11-06 22:18:29,201 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:18:29" (1/1) ... [2023-11-06 22:18:29,209 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:18:29,210 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:18:29,211 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:18:29,211 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:18:29,218 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:18:29" (1/1) ... [2023-11-06 22:18:29,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:18:29,242 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e384acfc-065f-480f-8e9b-ed6749a2706a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:18:29,256 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e384acfc-065f-480f-8e9b-ed6749a2706a/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:18:29,291 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e384acfc-065f-480f-8e9b-ed6749a2706a/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:18:29,301 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-11-06 22:18:29,302 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-11-06 22:18:29,302 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 22:18:29,303 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 22:18:29,303 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-06 22:18:29,303 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:18:29,303 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-06 22:18:29,304 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-06 22:18:29,304 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:18:29,304 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:18:29,304 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:18:29,305 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:18:29,463 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:18:29,465 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:18:29,983 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:18:29,992 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:18:29,993 INFO L302 CfgBuilder]: Removed 17 assume(true) statements. [2023-11-06 22:18:29,996 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:18:29 BoogieIcfgContainer [2023-11-06 22:18:29,996 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:18:29,999 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:18:29,999 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:18:30,003 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:18:30,004 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:18:28" (1/3) ... [2023-11-06 22:18:30,005 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d11f06f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:18:30, skipping insertion in model container [2023-11-06 22:18:30,005 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:18:29" (2/3) ... [2023-11-06 22:18:30,005 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d11f06f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:18:30, skipping insertion in model container [2023-11-06 22:18:30,006 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:18:29" (3/3) ... [2023-11-06 22:18:30,007 INFO L112 eAbstractionObserver]: Analyzing ICFG dll-rb-sentinel-1.i [2023-11-06 22:18:30,028 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:18:30,029 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 71 error locations. [2023-11-06 22:18:30,083 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:18:30,091 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@71a819c2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:18:30,091 INFO L358 AbstractCegarLoop]: Starting to check reachability of 71 error locations. [2023-11-06 22:18:30,100 INFO L276 IsEmpty]: Start isEmpty. Operand has 171 states, 91 states have (on average 2.120879120879121) internal successors, (193), 162 states have internal predecessors, (193), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-06 22:18:30,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-06 22:18:30,107 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:18:30,109 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-06 22:18:30,135 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2023-11-06 22:18:30,143 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:18:30,143 INFO L85 PathProgramCache]: Analyzing trace with hash 38794, now seen corresponding path program 1 times [2023-11-06 22:18:30,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:18:30,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483677153] [2023-11-06 22:18:30,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:30,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:18:30,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:18:30,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:18:30,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:18:30,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483677153] [2023-11-06 22:18:30,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483677153] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:18:30,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:18:30,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:18:30,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635810109] [2023-11-06 22:18:30,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:18:30,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:18:30,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:18:30,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:18:30,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:18:30,494 INFO L87 Difference]: Start difference. First operand has 171 states, 91 states have (on average 2.120879120879121) internal successors, (193), 162 states have internal predecessors, (193), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:30,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:18:30,732 INFO L93 Difference]: Finished difference Result 187 states and 200 transitions. [2023-11-06 22:18:30,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:18:30,735 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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 3 [2023-11-06 22:18:30,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:18:30,744 INFO L225 Difference]: With dead ends: 187 [2023-11-06 22:18:30,744 INFO L226 Difference]: Without dead ends: 185 [2023-11-06 22:18:30,746 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:18:30,750 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 142 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:18:30,751 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 116 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-06 22:18:30,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2023-11-06 22:18:30,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 157. [2023-11-06 22:18:30,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 82 states have (on average 1.9634146341463414) internal successors, (161), 155 states have internal predecessors, (161), 7 states have call successors, (7), 1 states have call predecessors, (7), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:30,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 168 transitions. [2023-11-06 22:18:30,795 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 168 transitions. Word has length 3 [2023-11-06 22:18:30,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:18:30,796 INFO L495 AbstractCegarLoop]: Abstraction has 157 states and 168 transitions. [2023-11-06 22:18:30,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:30,796 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 168 transitions. [2023-11-06 22:18:30,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-06 22:18:30,797 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:18:30,797 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-06 22:18:30,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:18:30,797 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2023-11-06 22:18:30,798 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:18:30,798 INFO L85 PathProgramCache]: Analyzing trace with hash 38795, now seen corresponding path program 1 times [2023-11-06 22:18:30,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:18:30,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552179791] [2023-11-06 22:18:30,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:30,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:18:30,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:18:30,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:18:30,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:18:30,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552179791] [2023-11-06 22:18:30,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552179791] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:18:30,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:18:30,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:18:30,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080986140] [2023-11-06 22:18:30,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:18:30,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:18:30,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:18:30,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:18:30,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:18:30,892 INFO L87 Difference]: Start difference. First operand 157 states and 168 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:31,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:18:31,029 INFO L93 Difference]: Finished difference Result 154 states and 165 transitions. [2023-11-06 22:18:31,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:18:31,030 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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 3 [2023-11-06 22:18:31,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:18:31,032 INFO L225 Difference]: With dead ends: 154 [2023-11-06 22:18:31,032 INFO L226 Difference]: Without dead ends: 154 [2023-11-06 22:18:31,032 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:18:31,034 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 151 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:18:31,035 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 95 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:18:31,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2023-11-06 22:18:31,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2023-11-06 22:18:31,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 82 states have (on average 1.9268292682926829) internal successors, (158), 152 states have internal predecessors, (158), 7 states have call successors, (7), 1 states have call predecessors, (7), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:31,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 165 transitions. [2023-11-06 22:18:31,046 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 165 transitions. Word has length 3 [2023-11-06 22:18:31,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:18:31,046 INFO L495 AbstractCegarLoop]: Abstraction has 154 states and 165 transitions. [2023-11-06 22:18:31,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:31,046 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 165 transitions. [2023-11-06 22:18:31,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-06 22:18:31,047 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:18:31,047 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:18:31,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 22:18:31,047 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2023-11-06 22:18:31,048 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:18:31,048 INFO L85 PathProgramCache]: Analyzing trace with hash 1466876622, now seen corresponding path program 1 times [2023-11-06 22:18:31,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:18:31,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816402230] [2023-11-06 22:18:31,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:31,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:18:31,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:18:31,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:18:31,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:18:31,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816402230] [2023-11-06 22:18:31,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816402230] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:18:31,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:18:31,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:18:31,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155141360] [2023-11-06 22:18:31,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:18:31,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:18:31,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:18:31,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:18:31,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:18:31,145 INFO L87 Difference]: Start difference. First operand 154 states and 165 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:31,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:18:31,309 INFO L93 Difference]: Finished difference Result 153 states and 164 transitions. [2023-11-06 22:18:31,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:18:31,310 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-11-06 22:18:31,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:18:31,314 INFO L225 Difference]: With dead ends: 153 [2023-11-06 22:18:31,314 INFO L226 Difference]: Without dead ends: 153 [2023-11-06 22:18:31,315 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:18:31,323 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 128 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:18:31,325 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 101 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:18:31,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2023-11-06 22:18:31,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 149. [2023-11-06 22:18:31,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 84 states have (on average 1.8452380952380953) internal successors, (155), 147 states have internal predecessors, (155), 7 states have call successors, (7), 1 states have call predecessors, (7), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:31,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 162 transitions. [2023-11-06 22:18:31,336 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 162 transitions. Word has length 7 [2023-11-06 22:18:31,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:18:31,337 INFO L495 AbstractCegarLoop]: Abstraction has 149 states and 162 transitions. [2023-11-06 22:18:31,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:31,337 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 162 transitions. [2023-11-06 22:18:31,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-06 22:18:31,337 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:18:31,338 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:18:31,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 22:18:31,338 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2023-11-06 22:18:31,339 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:18:31,339 INFO L85 PathProgramCache]: Analyzing trace with hash 1466876623, now seen corresponding path program 1 times [2023-11-06 22:18:31,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:18:31,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958390575] [2023-11-06 22:18:31,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:31,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:18:31,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:18:31,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:18:31,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:18:31,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958390575] [2023-11-06 22:18:31,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958390575] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:18:31,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:18:31,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:18:31,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628397838] [2023-11-06 22:18:31,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:18:31,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:18:31,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:18:31,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:18:31,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:18:31,464 INFO L87 Difference]: Start difference. First operand 149 states and 162 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:31,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:18:31,625 INFO L93 Difference]: Finished difference Result 166 states and 178 transitions. [2023-11-06 22:18:31,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:18:31,626 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-11-06 22:18:31,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:18:31,627 INFO L225 Difference]: With dead ends: 166 [2023-11-06 22:18:31,627 INFO L226 Difference]: Without dead ends: 166 [2023-11-06 22:18:31,628 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:18:31,629 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 124 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:18:31,629 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 108 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-06 22:18:31,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2023-11-06 22:18:31,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 153. [2023-11-06 22:18:31,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 91 states have (on average 1.7472527472527473) internal successors, (159), 151 states have internal predecessors, (159), 7 states have call successors, (7), 1 states have call predecessors, (7), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:31,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 166 transitions. [2023-11-06 22:18:31,639 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 166 transitions. Word has length 7 [2023-11-06 22:18:31,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:18:31,640 INFO L495 AbstractCegarLoop]: Abstraction has 153 states and 166 transitions. [2023-11-06 22:18:31,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:31,640 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 166 transitions. [2023-11-06 22:18:31,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-06 22:18:31,641 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:18:31,641 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:18:31,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 22:18:31,642 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2023-11-06 22:18:31,642 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:18:31,642 INFO L85 PathProgramCache]: Analyzing trace with hash -1904930185, now seen corresponding path program 1 times [2023-11-06 22:18:31,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:18:31,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723068553] [2023-11-06 22:18:31,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:31,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:18:31,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:18:31,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:18:31,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:18:31,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723068553] [2023-11-06 22:18:31,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723068553] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:18:31,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:18:31,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:18:31,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011781522] [2023-11-06 22:18:31,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:18:31,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:18:31,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:18:31,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:18:31,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:18:31,893 INFO L87 Difference]: Start difference. First operand 153 states and 166 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:32,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:18:32,106 INFO L93 Difference]: Finished difference Result 154 states and 168 transitions. [2023-11-06 22:18:32,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:18:32,106 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2023-11-06 22:18:32,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:18:32,107 INFO L225 Difference]: With dead ends: 154 [2023-11-06 22:18:32,108 INFO L226 Difference]: Without dead ends: 154 [2023-11-06 22:18:32,108 INFO L412 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 [2023-11-06 22:18:32,109 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 202 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:18:32,109 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [202 Valid, 86 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-06 22:18:32,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2023-11-06 22:18:32,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 140. [2023-11-06 22:18:32,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 93 states have (on average 1.5913978494623655) internal successors, (148), 138 states have internal predecessors, (148), 7 states have call successors, (7), 1 states have call predecessors, (7), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:32,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 155 transitions. [2023-11-06 22:18:32,117 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 155 transitions. Word has length 13 [2023-11-06 22:18:32,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:18:32,117 INFO L495 AbstractCegarLoop]: Abstraction has 140 states and 155 transitions. [2023-11-06 22:18:32,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:32,118 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 155 transitions. [2023-11-06 22:18:32,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-06 22:18:32,118 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:18:32,118 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:18:32,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 22:18:32,119 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2023-11-06 22:18:32,119 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:18:32,119 INFO L85 PathProgramCache]: Analyzing trace with hash -1904930184, now seen corresponding path program 1 times [2023-11-06 22:18:32,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:18:32,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999288686] [2023-11-06 22:18:32,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:32,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:18:32,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:18:32,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:18:32,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:18:32,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999288686] [2023-11-06 22:18:32,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999288686] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:18:32,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:18:32,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:18:32,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785954618] [2023-11-06 22:18:32,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:18:32,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:18:32,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:18:32,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:18:32,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:18:32,384 INFO L87 Difference]: Start difference. First operand 140 states and 155 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:32,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:18:32,661 INFO L93 Difference]: Finished difference Result 179 states and 195 transitions. [2023-11-06 22:18:32,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:18:32,662 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2023-11-06 22:18:32,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:18:32,663 INFO L225 Difference]: With dead ends: 179 [2023-11-06 22:18:32,663 INFO L226 Difference]: Without dead ends: 179 [2023-11-06 22:18:32,664 INFO L412 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 [2023-11-06 22:18:32,665 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 170 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:18:32,665 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 122 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-06 22:18:32,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2023-11-06 22:18:32,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 150. [2023-11-06 22:18:32,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 104 states have (on average 1.5480769230769231) internal successors, (161), 148 states have internal predecessors, (161), 7 states have call successors, (7), 1 states have call predecessors, (7), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:32,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 168 transitions. [2023-11-06 22:18:32,672 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 168 transitions. Word has length 13 [2023-11-06 22:18:32,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:18:32,673 INFO L495 AbstractCegarLoop]: Abstraction has 150 states and 168 transitions. [2023-11-06 22:18:32,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:32,673 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 168 transitions. [2023-11-06 22:18:32,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-06 22:18:32,674 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:18:32,674 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:18:32,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 22:18:32,675 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2023-11-06 22:18:32,675 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:18:32,676 INFO L85 PathProgramCache]: Analyzing trace with hash 1396145002, now seen corresponding path program 1 times [2023-11-06 22:18:32,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:18:32,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637636775] [2023-11-06 22:18:32,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:32,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:18:32,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:18:32,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:18:32,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:18:32,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637636775] [2023-11-06 22:18:32,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637636775] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:18:32,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:18:32,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:18:32,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733834974] [2023-11-06 22:18:32,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:18:32,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:18:32,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:18:32,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:18:32,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:18:32,776 INFO L87 Difference]: Start difference. First operand 150 states and 168 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:33,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:18:33,000 INFO L93 Difference]: Finished difference Result 194 states and 208 transitions. [2023-11-06 22:18:33,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:18:33,003 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2023-11-06 22:18:33,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:18:33,005 INFO L225 Difference]: With dead ends: 194 [2023-11-06 22:18:33,005 INFO L226 Difference]: Without dead ends: 194 [2023-11-06 22:18:33,005 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:18:33,006 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 295 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 295 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:18:33,006 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [295 Valid, 168 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-06 22:18:33,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2023-11-06 22:18:33,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 149. [2023-11-06 22:18:33,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 104 states have (on average 1.5192307692307692) internal successors, (158), 147 states have internal predecessors, (158), 6 states have call successors, (6), 1 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:33,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 164 transitions. [2023-11-06 22:18:33,017 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 164 transitions. Word has length 17 [2023-11-06 22:18:33,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:18:33,018 INFO L495 AbstractCegarLoop]: Abstraction has 149 states and 164 transitions. [2023-11-06 22:18:33,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:33,018 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 164 transitions. [2023-11-06 22:18:33,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-06 22:18:33,019 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:18:33,019 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:18:33,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 22:18:33,020 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2023-11-06 22:18:33,021 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:18:33,021 INFO L85 PathProgramCache]: Analyzing trace with hash -372244357, now seen corresponding path program 1 times [2023-11-06 22:18:33,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:18:33,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855715343] [2023-11-06 22:18:33,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:33,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:18:33,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:18:33,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:18:33,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:18:33,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855715343] [2023-11-06 22:18:33,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855715343] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:18:33,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:18:33,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:18:33,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414551880] [2023-11-06 22:18:33,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:18:33,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:18:33,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:18:33,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:18:33,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:18:33,182 INFO L87 Difference]: Start difference. First operand 149 states and 164 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:33,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:18:33,387 INFO L93 Difference]: Finished difference Result 148 states and 162 transitions. [2023-11-06 22:18:33,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:18:33,388 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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 16 [2023-11-06 22:18:33,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:18:33,389 INFO L225 Difference]: With dead ends: 148 [2023-11-06 22:18:33,389 INFO L226 Difference]: Without dead ends: 148 [2023-11-06 22:18:33,389 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:18:33,390 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 10 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 350 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 [2023-11-06 22:18:33,390 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 350 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-06 22:18:33,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2023-11-06 22:18:33,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2023-11-06 22:18:33,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 104 states have (on average 1.5) internal successors, (156), 146 states have internal predecessors, (156), 6 states have call successors, (6), 1 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:33,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 162 transitions. [2023-11-06 22:18:33,395 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 162 transitions. Word has length 16 [2023-11-06 22:18:33,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:18:33,395 INFO L495 AbstractCegarLoop]: Abstraction has 148 states and 162 transitions. [2023-11-06 22:18:33,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:33,396 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 162 transitions. [2023-11-06 22:18:33,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-06 22:18:33,396 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:18:33,397 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:18:33,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-06 22:18:33,397 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2023-11-06 22:18:33,399 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:18:33,399 INFO L85 PathProgramCache]: Analyzing trace with hash -372244356, now seen corresponding path program 1 times [2023-11-06 22:18:33,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:18:33,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718240983] [2023-11-06 22:18:33,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:33,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:18:33,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:18:33,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:18:33,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:18:33,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718240983] [2023-11-06 22:18:33,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718240983] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:18:33,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:18:33,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:18:33,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584703790] [2023-11-06 22:18:33,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:18:33,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:18:33,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:18:33,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:18:33,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:18:33,649 INFO L87 Difference]: Start difference. First operand 148 states and 162 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:33,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:18:33,867 INFO L93 Difference]: Finished difference Result 147 states and 160 transitions. [2023-11-06 22:18:33,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:18:33,868 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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 16 [2023-11-06 22:18:33,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:18:33,869 INFO L225 Difference]: With dead ends: 147 [2023-11-06 22:18:33,869 INFO L226 Difference]: Without dead ends: 147 [2023-11-06 22:18:33,869 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:18:33,870 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 5 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 335 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:18:33,871 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 335 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-06 22:18:33,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2023-11-06 22:18:33,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2023-11-06 22:18:33,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 104 states have (on average 1.4807692307692308) internal successors, (154), 145 states have internal predecessors, (154), 6 states have call successors, (6), 1 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:33,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 160 transitions. [2023-11-06 22:18:33,875 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 160 transitions. Word has length 16 [2023-11-06 22:18:33,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:18:33,875 INFO L495 AbstractCegarLoop]: Abstraction has 147 states and 160 transitions. [2023-11-06 22:18:33,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:33,876 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 160 transitions. [2023-11-06 22:18:33,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-06 22:18:33,876 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:18:33,876 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:18:33,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-06 22:18:33,877 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2023-11-06 22:18:33,877 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:18:33,880 INFO L85 PathProgramCache]: Analyzing trace with hash -544756750, now seen corresponding path program 1 times [2023-11-06 22:18:33,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:18:33,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849438982] [2023-11-06 22:18:33,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:33,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:18:33,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:18:34,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:18:34,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:18:34,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849438982] [2023-11-06 22:18:34,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849438982] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:18:34,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:18:34,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-06 22:18:34,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433538558] [2023-11-06 22:18:34,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:18:34,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 22:18:34,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:18:34,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 22:18:34,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:18:34,268 INFO L87 Difference]: Start difference. First operand 147 states and 160 transitions. Second operand has 8 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:34,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:18:34,567 INFO L93 Difference]: Finished difference Result 199 states and 218 transitions. [2023-11-06 22:18:34,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 22:18:34,568 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2023-11-06 22:18:34,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:18:34,569 INFO L225 Difference]: With dead ends: 199 [2023-11-06 22:18:34,569 INFO L226 Difference]: Without dead ends: 199 [2023-11-06 22:18:34,570 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2023-11-06 22:18:34,571 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 290 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 290 SdHoareTripleChecker+Valid, 308 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:18:34,572 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [290 Valid, 308 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-06 22:18:34,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2023-11-06 22:18:34,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 152. [2023-11-06 22:18:34,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 109 states have (on average 1.4587155963302751) internal successors, (159), 150 states have internal predecessors, (159), 6 states have call successors, (6), 1 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:34,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 165 transitions. [2023-11-06 22:18:34,577 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 165 transitions. Word has length 20 [2023-11-06 22:18:34,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:18:34,578 INFO L495 AbstractCegarLoop]: Abstraction has 152 states and 165 transitions. [2023-11-06 22:18:34,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:34,578 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 165 transitions. [2023-11-06 22:18:34,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-06 22:18:34,579 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:18:34,579 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:18:34,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-06 22:18:34,580 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2023-11-06 22:18:34,580 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:18:34,580 INFO L85 PathProgramCache]: Analyzing trace with hash -2002803523, now seen corresponding path program 1 times [2023-11-06 22:18:34,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:18:34,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195875108] [2023-11-06 22:18:34,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:34,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:18:34,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:18:34,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:18:34,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:18:34,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195875108] [2023-11-06 22:18:34,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195875108] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:18:34,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:18:34,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-06 22:18:34,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242475452] [2023-11-06 22:18:34,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:18:34,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-06 22:18:34,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:18:34,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-06 22:18:34,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:18:34,938 INFO L87 Difference]: Start difference. First operand 152 states and 165 transitions. Second operand has 9 states, 8 states have (on average 2.5) internal successors, (20), 9 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:35,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:18:35,388 INFO L93 Difference]: Finished difference Result 151 states and 164 transitions. [2023-11-06 22:18:35,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-06 22:18:35,389 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.5) internal successors, (20), 9 states have internal predecessors, (20), 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 20 [2023-11-06 22:18:35,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:18:35,390 INFO L225 Difference]: With dead ends: 151 [2023-11-06 22:18:35,390 INFO L226 Difference]: Without dead ends: 151 [2023-11-06 22:18:35,390 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2023-11-06 22:18:35,391 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 178 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 490 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 255 SdHoareTripleChecker+Invalid, 503 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 490 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-06 22:18:35,391 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 255 Invalid, 503 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 490 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-06 22:18:35,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2023-11-06 22:18:35,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2023-11-06 22:18:35,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 109 states have (on average 1.4495412844036697) internal successors, (158), 149 states have internal predecessors, (158), 6 states have call successors, (6), 1 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:35,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 164 transitions. [2023-11-06 22:18:35,396 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 164 transitions. Word has length 20 [2023-11-06 22:18:35,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:18:35,396 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 164 transitions. [2023-11-06 22:18:35,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.5) internal successors, (20), 9 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:35,397 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 164 transitions. [2023-11-06 22:18:35,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-06 22:18:35,397 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:18:35,398 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:18:35,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-06 22:18:35,398 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2023-11-06 22:18:35,398 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:18:35,399 INFO L85 PathProgramCache]: Analyzing trace with hash -2002803522, now seen corresponding path program 1 times [2023-11-06 22:18:35,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:18:35,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889643796] [2023-11-06 22:18:35,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:35,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:18:35,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:18:35,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:18:35,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:18:35,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889643796] [2023-11-06 22:18:35,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889643796] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:18:35,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:18:35,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-06 22:18:35,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084643579] [2023-11-06 22:18:35,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:18:35,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-06 22:18:35,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:18:35,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-06 22:18:35,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-11-06 22:18:35,834 INFO L87 Difference]: Start difference. First operand 151 states and 164 transitions. Second operand has 10 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 10 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:36,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:18:36,555 INFO L93 Difference]: Finished difference Result 166 states and 183 transitions. [2023-11-06 22:18:36,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-06 22:18:36,556 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 10 states have internal predecessors, (20), 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 20 [2023-11-06 22:18:36,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:18:36,557 INFO L225 Difference]: With dead ends: 166 [2023-11-06 22:18:36,557 INFO L226 Difference]: Without dead ends: 166 [2023-11-06 22:18:36,557 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=140, Invalid=366, Unknown=0, NotChecked=0, Total=506 [2023-11-06 22:18:36,558 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 217 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 558 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 316 SdHoareTripleChecker+Invalid, 584 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 558 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-06 22:18:36,558 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [217 Valid, 316 Invalid, 584 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 558 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-06 22:18:36,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2023-11-06 22:18:36,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 155. [2023-11-06 22:18:36,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 119 states have (on average 1.3949579831932772) internal successors, (166), 153 states have internal predecessors, (166), 6 states have call successors, (6), 1 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:36,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 172 transitions. [2023-11-06 22:18:36,563 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 172 transitions. Word has length 20 [2023-11-06 22:18:36,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:18:36,564 INFO L495 AbstractCegarLoop]: Abstraction has 155 states and 172 transitions. [2023-11-06 22:18:36,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 10 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:36,564 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 172 transitions. [2023-11-06 22:18:36,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-11-06 22:18:36,565 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:18:36,565 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:18:36,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-06 22:18:36,565 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr44REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2023-11-06 22:18:36,566 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:18:36,566 INFO L85 PathProgramCache]: Analyzing trace with hash 726822264, now seen corresponding path program 1 times [2023-11-06 22:18:36,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:18:36,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849520118] [2023-11-06 22:18:36,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:36,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:18:36,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:18:36,864 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:18:36,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:18:36,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849520118] [2023-11-06 22:18:36,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849520118] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:18:36,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2105022937] [2023-11-06 22:18:36,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:36,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:18:36,865 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e384acfc-065f-480f-8e9b-ed6749a2706a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:18:36,870 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e384acfc-065f-480f-8e9b-ed6749a2706a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:18:36,909 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e384acfc-065f-480f-8e9b-ed6749a2706a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 22:18:37,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:18:37,076 INFO L262 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-06 22:18:37,083 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:18:37,136 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-06 22:18:37,211 INFO L322 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2023-11-06 22:18:37,212 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 13 [2023-11-06 22:18:37,261 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-06 22:18:37,321 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-11-06 22:18:37,373 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2023-11-06 22:18:37,619 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:18:37,619 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 16 [2023-11-06 22:18:37,657 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:18:37,657 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:18:37,946 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:18:37,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2105022937] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:18:37,947 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:18:37,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9, 8] total 18 [2023-11-06 22:18:37,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340363986] [2023-11-06 22:18:37,947 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:18:37,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-06 22:18:37,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:18:37,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-06 22:18:37,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2023-11-06 22:18:37,949 INFO L87 Difference]: Start difference. First operand 155 states and 172 transitions. Second operand has 18 states, 18 states have (on average 3.6666666666666665) internal successors, (66), 18 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:39,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:18:39,439 INFO L93 Difference]: Finished difference Result 214 states and 237 transitions. [2023-11-06 22:18:39,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-06 22:18:39,439 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.6666666666666665) internal successors, (66), 18 states have internal predecessors, (66), 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 25 [2023-11-06 22:18:39,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:18:39,441 INFO L225 Difference]: With dead ends: 214 [2023-11-06 22:18:39,441 INFO L226 Difference]: Without dead ends: 214 [2023-11-06 22:18:39,442 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=288, Invalid=902, Unknown=0, NotChecked=0, Total=1190 [2023-11-06 22:18:39,443 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 651 mSDsluCounter, 450 mSDsCounter, 0 mSdLazyCounter, 1006 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 651 SdHoareTripleChecker+Valid, 509 SdHoareTripleChecker+Invalid, 1073 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 1006 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-06 22:18:39,443 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [651 Valid, 509 Invalid, 1073 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 1006 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-06 22:18:39,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2023-11-06 22:18:39,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 162. [2023-11-06 22:18:39,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 126 states have (on average 1.380952380952381) internal successors, (174), 160 states have internal predecessors, (174), 6 states have call successors, (6), 1 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:39,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 180 transitions. [2023-11-06 22:18:39,449 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 180 transitions. Word has length 25 [2023-11-06 22:18:39,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:18:39,449 INFO L495 AbstractCegarLoop]: Abstraction has 162 states and 180 transitions. [2023-11-06 22:18:39,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.6666666666666665) internal successors, (66), 18 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:39,450 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 180 transitions. [2023-11-06 22:18:39,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-06 22:18:39,451 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:18:39,451 INFO L195 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] [2023-11-06 22:18:39,462 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e384acfc-065f-480f-8e9b-ed6749a2706a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-06 22:18:39,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e384acfc-065f-480f-8e9b-ed6749a2706a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-06 22:18:39,657 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2023-11-06 22:18:39,657 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:18:39,657 INFO L85 PathProgramCache]: Analyzing trace with hash 966761239, now seen corresponding path program 1 times [2023-11-06 22:18:39,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:18:39,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261583609] [2023-11-06 22:18:39,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:39,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:18:39,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:18:39,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:18:39,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:18:39,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261583609] [2023-11-06 22:18:39,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261583609] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:18:39,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:18:39,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:18:39,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657365354] [2023-11-06 22:18:39,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:18:39,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:18:39,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:18:39,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:18:39,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:18:39,737 INFO L87 Difference]: Start difference. First operand 162 states and 180 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:39,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:18:39,920 INFO L93 Difference]: Finished difference Result 166 states and 182 transitions. [2023-11-06 22:18:39,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:18:39,921 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2023-11-06 22:18:39,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:18:39,922 INFO L225 Difference]: With dead ends: 166 [2023-11-06 22:18:39,922 INFO L226 Difference]: Without dead ends: 166 [2023-11-06 22:18:39,922 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:18:39,923 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 23 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 343 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:18:39,923 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 343 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-06 22:18:39,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2023-11-06 22:18:39,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 161. [2023-11-06 22:18:39,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 125 states have (on average 1.368) internal successors, (171), 159 states have internal predecessors, (171), 6 states have call successors, (6), 1 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:39,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 177 transitions. [2023-11-06 22:18:39,929 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 177 transitions. Word has length 27 [2023-11-06 22:18:39,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:18:39,929 INFO L495 AbstractCegarLoop]: Abstraction has 161 states and 177 transitions. [2023-11-06 22:18:39,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:39,929 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 177 transitions. [2023-11-06 22:18:39,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-11-06 22:18:39,932 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:18:39,932 INFO L195 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] [2023-11-06 22:18:39,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-06 22:18:39,933 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2023-11-06 22:18:39,933 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:18:39,933 INFO L85 PathProgramCache]: Analyzing trace with hash 53235318, now seen corresponding path program 1 times [2023-11-06 22:18:39,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:18:39,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21367925] [2023-11-06 22:18:39,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:39,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:18:39,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:18:40,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:18:40,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:18:40,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21367925] [2023-11-06 22:18:40,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21367925] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:18:40,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:18:40,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:18:40,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939970923] [2023-11-06 22:18:40,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:18:40,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:18:40,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:18:40,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:18:40,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:18:40,070 INFO L87 Difference]: Start difference. First operand 161 states and 177 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:40,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:18:40,205 INFO L93 Difference]: Finished difference Result 164 states and 178 transitions. [2023-11-06 22:18:40,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:18:40,205 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2023-11-06 22:18:40,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:18:40,207 INFO L225 Difference]: With dead ends: 164 [2023-11-06 22:18:40,207 INFO L226 Difference]: Without dead ends: 164 [2023-11-06 22:18:40,207 INFO L412 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 [2023-11-06 22:18:40,208 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 19 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 294 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:18:40,208 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 294 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:18:40,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2023-11-06 22:18:40,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 160. [2023-11-06 22:18:40,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 125 states have (on average 1.352) internal successors, (169), 158 states have internal predecessors, (169), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:40,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 174 transitions. [2023-11-06 22:18:40,213 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 174 transitions. Word has length 28 [2023-11-06 22:18:40,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:18:40,214 INFO L495 AbstractCegarLoop]: Abstraction has 160 states and 174 transitions. [2023-11-06 22:18:40,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:40,215 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 174 transitions. [2023-11-06 22:18:40,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-11-06 22:18:40,220 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:18:40,220 INFO L195 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] [2023-11-06 22:18:40,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-06 22:18:40,221 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2023-11-06 22:18:40,222 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:18:40,222 INFO L85 PathProgramCache]: Analyzing trace with hash 314752878, now seen corresponding path program 1 times [2023-11-06 22:18:40,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:18:40,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021457066] [2023-11-06 22:18:40,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:40,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:18:40,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:18:40,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:18:40,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:18:40,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021457066] [2023-11-06 22:18:40,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021457066] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:18:40,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:18:40,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:18:40,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549402594] [2023-11-06 22:18:40,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:18:40,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:18:40,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:18:40,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:18:40,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:18:40,406 INFO L87 Difference]: Start difference. First operand 160 states and 174 transitions. Second operand has 5 states, 4 states have (on average 7.0) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:40,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:18:40,577 INFO L93 Difference]: Finished difference Result 159 states and 173 transitions. [2023-11-06 22:18:40,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:18:40,578 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.0) internal successors, (28), 5 states have internal predecessors, (28), 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 28 [2023-11-06 22:18:40,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:18:40,579 INFO L225 Difference]: With dead ends: 159 [2023-11-06 22:18:40,579 INFO L226 Difference]: Without dead ends: 159 [2023-11-06 22:18:40,579 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:18:40,580 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 7 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 325 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:18:40,580 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 325 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:18:40,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2023-11-06 22:18:40,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2023-11-06 22:18:40,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 125 states have (on average 1.344) internal successors, (168), 157 states have internal predecessors, (168), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:40,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 173 transitions. [2023-11-06 22:18:40,585 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 173 transitions. Word has length 28 [2023-11-06 22:18:40,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:18:40,586 INFO L495 AbstractCegarLoop]: Abstraction has 159 states and 173 transitions. [2023-11-06 22:18:40,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 7.0) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:40,586 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 173 transitions. [2023-11-06 22:18:40,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-11-06 22:18:40,587 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:18:40,587 INFO L195 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] [2023-11-06 22:18:40,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-06 22:18:40,587 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2023-11-06 22:18:40,588 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:18:40,588 INFO L85 PathProgramCache]: Analyzing trace with hash 314752879, now seen corresponding path program 1 times [2023-11-06 22:18:40,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:18:40,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780754663] [2023-11-06 22:18:40,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:40,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:18:40,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:18:40,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:18:40,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:18:40,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780754663] [2023-11-06 22:18:40,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780754663] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:18:40,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:18:40,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:18:40,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734714556] [2023-11-06 22:18:40,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:18:40,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:18:40,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:18:40,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:18:40,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:18:40,846 INFO L87 Difference]: Start difference. First operand 159 states and 173 transitions. Second operand has 5 states, 4 states have (on average 7.0) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:41,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:18:41,045 INFO L93 Difference]: Finished difference Result 158 states and 172 transitions. [2023-11-06 22:18:41,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:18:41,045 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.0) internal successors, (28), 5 states have internal predecessors, (28), 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 28 [2023-11-06 22:18:41,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:18:41,046 INFO L225 Difference]: With dead ends: 158 [2023-11-06 22:18:41,047 INFO L226 Difference]: Without dead ends: 158 [2023-11-06 22:18:41,047 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:18:41,048 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 3 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 315 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:18:41,048 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 315 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-06 22:18:41,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2023-11-06 22:18:41,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2023-11-06 22:18:41,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 125 states have (on average 1.336) internal successors, (167), 156 states have internal predecessors, (167), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:41,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 172 transitions. [2023-11-06 22:18:41,062 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 172 transitions. Word has length 28 [2023-11-06 22:18:41,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:18:41,063 INFO L495 AbstractCegarLoop]: Abstraction has 158 states and 172 transitions. [2023-11-06 22:18:41,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 7.0) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:41,064 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 172 transitions. [2023-11-06 22:18:41,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-11-06 22:18:41,067 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:18:41,067 INFO L195 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] [2023-11-06 22:18:41,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-06 22:18:41,068 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2023-11-06 22:18:41,068 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:18:41,068 INFO L85 PathProgramCache]: Analyzing trace with hash -1120386731, now seen corresponding path program 1 times [2023-11-06 22:18:41,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:18:41,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613884393] [2023-11-06 22:18:41,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:41,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:18:41,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:18:41,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:18:41,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:18:41,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613884393] [2023-11-06 22:18:41,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613884393] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:18:41,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:18:41,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:18:41,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669050697] [2023-11-06 22:18:41,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:18:41,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:18:41,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:18:41,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:18:41,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:18:41,277 INFO L87 Difference]: Start difference. First operand 158 states and 172 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:41,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:18:41,409 INFO L93 Difference]: Finished difference Result 158 states and 170 transitions. [2023-11-06 22:18:41,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:18:41,412 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2023-11-06 22:18:41,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:18:41,413 INFO L225 Difference]: With dead ends: 158 [2023-11-06 22:18:41,413 INFO L226 Difference]: Without dead ends: 158 [2023-11-06 22:18:41,413 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:18:41,414 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 15 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 254 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:18:41,414 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 254 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:18:41,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2023-11-06 22:18:41,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 157. [2023-11-06 22:18:41,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 125 states have (on average 1.32) internal successors, (165), 155 states have internal predecessors, (165), 4 states have call successors, (4), 1 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:41,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 169 transitions. [2023-11-06 22:18:41,419 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 169 transitions. Word has length 31 [2023-11-06 22:18:41,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:18:41,420 INFO L495 AbstractCegarLoop]: Abstraction has 157 states and 169 transitions. [2023-11-06 22:18:41,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:41,420 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 169 transitions. [2023-11-06 22:18:41,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-11-06 22:18:41,421 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:18:41,421 INFO L195 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] [2023-11-06 22:18:41,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-06 22:18:41,423 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr57ASSERT_VIOLATIONMEMORY_FREE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2023-11-06 22:18:41,423 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:18:41,423 INFO L85 PathProgramCache]: Analyzing trace with hash -73432733, now seen corresponding path program 1 times [2023-11-06 22:18:41,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:18:41,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225939892] [2023-11-06 22:18:41,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:41,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:18:41,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:18:41,593 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:18:41,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:18:41,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225939892] [2023-11-06 22:18:41,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225939892] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:18:41,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1284455788] [2023-11-06 22:18:41,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:41,594 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:18:41,595 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e384acfc-065f-480f-8e9b-ed6749a2706a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:18:41,612 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e384acfc-065f-480f-8e9b-ed6749a2706a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:18:41,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e384acfc-065f-480f-8e9b-ed6749a2706a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 22:18:41,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:18:41,761 INFO L262 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-06 22:18:41,766 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:18:41,818 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:18:41,819 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:18:41,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1284455788] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:18:41,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:18:41,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [8] total 9 [2023-11-06 22:18:41,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899161974] [2023-11-06 22:18:41,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:18:41,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:18:41,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:18:41,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:18:41,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:18:41,823 INFO L87 Difference]: Start difference. First operand 157 states and 169 transitions. Second operand has 3 states, 2 states have (on average 15.5) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:41,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:18:41,890 INFO L93 Difference]: Finished difference Result 159 states and 171 transitions. [2023-11-06 22:18:41,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:18:41,890 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 15.5) internal successors, (31), 3 states have internal predecessors, (31), 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 31 [2023-11-06 22:18:41,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:18:41,891 INFO L225 Difference]: With dead ends: 159 [2023-11-06 22:18:41,892 INFO L226 Difference]: Without dead ends: 159 [2023-11-06 22:18:41,892 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:18:41,893 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 68 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:18:41,893 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 125 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:18:41,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2023-11-06 22:18:41,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2023-11-06 22:18:41,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 127 states have (on average 1.31496062992126) internal successors, (167), 157 states have internal predecessors, (167), 4 states have call successors, (4), 1 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:41,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 171 transitions. [2023-11-06 22:18:41,897 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 171 transitions. Word has length 31 [2023-11-06 22:18:41,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:18:41,898 INFO L495 AbstractCegarLoop]: Abstraction has 159 states and 171 transitions. [2023-11-06 22:18:41,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 15.5) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:41,898 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 171 transitions. [2023-11-06 22:18:41,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-11-06 22:18:41,899 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:18:41,900 INFO L195 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] [2023-11-06 22:18:41,911 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e384acfc-065f-480f-8e9b-ed6749a2706a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-06 22:18:42,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e384acfc-065f-480f-8e9b-ed6749a2706a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:18:42,106 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr34REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2023-11-06 22:18:42,106 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:18:42,106 INFO L85 PathProgramCache]: Analyzing trace with hash 1802650096, now seen corresponding path program 1 times [2023-11-06 22:18:42,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:18:42,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087530348] [2023-11-06 22:18:42,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:42,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:18:42,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:18:42,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:18:42,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:18:42,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087530348] [2023-11-06 22:18:42,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087530348] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:18:42,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:18:42,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:18:42,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531836991] [2023-11-06 22:18:42,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:18:42,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 22:18:42,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:18:42,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 22:18:42,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:18:42,457 INFO L87 Difference]: Start difference. First operand 159 states and 171 transitions. Second operand has 8 states, 7 states have (on average 4.571428571428571) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:42,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:18:42,866 INFO L93 Difference]: Finished difference Result 159 states and 171 transitions. [2023-11-06 22:18:42,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 22:18:42,867 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.571428571428571) internal successors, (32), 8 states have internal predecessors, (32), 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 32 [2023-11-06 22:18:42,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:18:42,868 INFO L225 Difference]: With dead ends: 159 [2023-11-06 22:18:42,868 INFO L226 Difference]: Without dead ends: 159 [2023-11-06 22:18:42,869 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2023-11-06 22:18:42,869 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 56 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 445 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 357 SdHoareTripleChecker+Invalid, 454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 445 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-06 22:18:42,869 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 357 Invalid, 454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 445 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-06 22:18:42,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2023-11-06 22:18:42,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 158. [2023-11-06 22:18:42,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 127 states have (on average 1.3070866141732282) internal successors, (166), 156 states have internal predecessors, (166), 4 states have call successors, (4), 1 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:42,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 170 transitions. [2023-11-06 22:18:42,874 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 170 transitions. Word has length 32 [2023-11-06 22:18:42,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:18:42,874 INFO L495 AbstractCegarLoop]: Abstraction has 158 states and 170 transitions. [2023-11-06 22:18:42,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.571428571428571) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:42,874 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 170 transitions. [2023-11-06 22:18:42,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-11-06 22:18:42,875 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:18:42,875 INFO L195 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] [2023-11-06 22:18:42,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-06 22:18:42,875 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr35REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2023-11-06 22:18:42,876 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:18:42,876 INFO L85 PathProgramCache]: Analyzing trace with hash 1802650097, now seen corresponding path program 1 times [2023-11-06 22:18:42,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:18:42,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656019393] [2023-11-06 22:18:42,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:42,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:18:42,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:18:43,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:18:43,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:18:43,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656019393] [2023-11-06 22:18:43,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656019393] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:18:43,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:18:43,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-06 22:18:43,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118746056] [2023-11-06 22:18:43,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:18:43,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-06 22:18:43,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:18:43,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-06 22:18:43,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:18:43,355 INFO L87 Difference]: Start difference. First operand 158 states and 170 transitions. Second operand has 9 states, 8 states have (on average 4.0) internal successors, (32), 9 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:43,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:18:43,898 INFO L93 Difference]: Finished difference Result 155 states and 167 transitions. [2023-11-06 22:18:43,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-06 22:18:43,899 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 4.0) internal successors, (32), 9 states have internal predecessors, (32), 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 32 [2023-11-06 22:18:43,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:18:43,900 INFO L225 Difference]: With dead ends: 155 [2023-11-06 22:18:43,900 INFO L226 Difference]: Without dead ends: 155 [2023-11-06 22:18:43,900 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2023-11-06 22:18:43,901 INFO L413 NwaCegarLoop]: 103 mSDtfsCounter, 67 mSDsluCounter, 378 mSDsCounter, 0 mSdLazyCounter, 528 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 481 SdHoareTripleChecker+Invalid, 545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 528 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-06 22:18:43,901 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 481 Invalid, 545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 528 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-06 22:18:43,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2023-11-06 22:18:43,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 135. [2023-11-06 22:18:43,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 111 states have (on average 1.2702702702702702) internal successors, (141), 133 states have internal predecessors, (141), 4 states have call successors, (4), 1 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:43,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 145 transitions. [2023-11-06 22:18:43,906 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 145 transitions. Word has length 32 [2023-11-06 22:18:43,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:18:43,906 INFO L495 AbstractCegarLoop]: Abstraction has 135 states and 145 transitions. [2023-11-06 22:18:43,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 4.0) internal successors, (32), 9 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:43,906 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 145 transitions. [2023-11-06 22:18:43,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-11-06 22:18:43,907 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:18:43,907 INFO L195 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] [2023-11-06 22:18:43,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-06 22:18:43,907 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2023-11-06 22:18:43,908 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:18:43,908 INFO L85 PathProgramCache]: Analyzing trace with hash 1291284650, now seen corresponding path program 1 times [2023-11-06 22:18:43,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:18:43,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280518679] [2023-11-06 22:18:43,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:43,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:18:43,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:18:44,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:18:44,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:18:44,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280518679] [2023-11-06 22:18:44,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280518679] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:18:44,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:18:44,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-06 22:18:44,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726937266] [2023-11-06 22:18:44,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:18:44,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-06 22:18:44,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:18:44,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-06 22:18:44,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2023-11-06 22:18:44,328 INFO L87 Difference]: Start difference. First operand 135 states and 145 transitions. Second operand has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 states have internal predecessors, (32), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:45,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:18:45,121 INFO L93 Difference]: Finished difference Result 189 states and 201 transitions. [2023-11-06 22:18:45,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-06 22:18:45,124 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 states have internal predecessors, (32), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2023-11-06 22:18:45,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:18:45,125 INFO L225 Difference]: With dead ends: 189 [2023-11-06 22:18:45,125 INFO L226 Difference]: Without dead ends: 189 [2023-11-06 22:18:45,126 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=203, Invalid=499, Unknown=0, NotChecked=0, Total=702 [2023-11-06 22:18:45,126 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 338 mSDsluCounter, 317 mSDsCounter, 0 mSdLazyCounter, 542 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 338 SdHoareTripleChecker+Valid, 371 SdHoareTripleChecker+Invalid, 575 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 542 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-06 22:18:45,127 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [338 Valid, 371 Invalid, 575 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 542 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-06 22:18:45,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2023-11-06 22:18:45,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 142. [2023-11-06 22:18:45,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 118 states have (on average 1.2542372881355932) internal successors, (148), 140 states have internal predecessors, (148), 4 states have call successors, (4), 1 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:45,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 152 transitions. [2023-11-06 22:18:45,132 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 152 transitions. Word has length 33 [2023-11-06 22:18:45,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:18:45,132 INFO L495 AbstractCegarLoop]: Abstraction has 142 states and 152 transitions. [2023-11-06 22:18:45,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 states have internal predecessors, (32), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:45,132 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 152 transitions. [2023-11-06 22:18:45,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-11-06 22:18:45,133 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:18:45,133 INFO L195 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] [2023-11-06 22:18:45,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-06 22:18:45,134 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr59REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2023-11-06 22:18:45,134 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:18:45,135 INFO L85 PathProgramCache]: Analyzing trace with hash -1849369658, now seen corresponding path program 1 times [2023-11-06 22:18:45,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:18:45,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944947659] [2023-11-06 22:18:45,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:45,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:18:45,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:18:45,323 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:18:45,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:18:45,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944947659] [2023-11-06 22:18:45,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944947659] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:18:45,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1540353273] [2023-11-06 22:18:45,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:45,324 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:18:45,324 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e384acfc-065f-480f-8e9b-ed6749a2706a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:18:45,326 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e384acfc-065f-480f-8e9b-ed6749a2706a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:18:45,361 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e384acfc-065f-480f-8e9b-ed6749a2706a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 22:18:45,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:18:45,501 INFO L262 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-06 22:18:45,504 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:18:45,510 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-06 22:18:45,551 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:18:45,551 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:18:45,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1540353273] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:18:45,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:18:45,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 9 [2023-11-06 22:18:45,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996095429] [2023-11-06 22:18:45,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:18:45,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:18:45,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:18:45,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:18:45,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:18:45,554 INFO L87 Difference]: Start difference. First operand 142 states and 152 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:45,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:18:45,649 INFO L93 Difference]: Finished difference Result 151 states and 161 transitions. [2023-11-06 22:18:45,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:18:45,650 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 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 33 [2023-11-06 22:18:45,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:18:45,651 INFO L225 Difference]: With dead ends: 151 [2023-11-06 22:18:45,651 INFO L226 Difference]: Without dead ends: 151 [2023-11-06 22:18:45,652 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-11-06 22:18:45,653 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 7 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 272 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:18:45,654 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 272 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:18:45,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2023-11-06 22:18:45,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 145. [2023-11-06 22:18:45,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 121 states have (on average 1.2479338842975207) internal successors, (151), 143 states have internal predecessors, (151), 4 states have call successors, (4), 1 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:45,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 155 transitions. [2023-11-06 22:18:45,658 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 155 transitions. Word has length 33 [2023-11-06 22:18:45,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:18:45,658 INFO L495 AbstractCegarLoop]: Abstraction has 145 states and 155 transitions. [2023-11-06 22:18:45,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:45,658 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 155 transitions. [2023-11-06 22:18:45,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-11-06 22:18:45,659 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:18:45,659 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-06 22:18:45,665 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e384acfc-065f-480f-8e9b-ed6749a2706a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-06 22:18:45,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e384acfc-065f-480f-8e9b-ed6749a2706a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:18:45,865 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr52REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2023-11-06 22:18:45,865 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:18:45,865 INFO L85 PathProgramCache]: Analyzing trace with hash 1187283993, now seen corresponding path program 1 times [2023-11-06 22:18:45,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:18:45,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462126365] [2023-11-06 22:18:45,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:45,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:18:45,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:18:46,136 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:18:46,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:18:46,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462126365] [2023-11-06 22:18:46,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462126365] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:18:46,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [404327235] [2023-11-06 22:18:46,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:46,137 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:18:46,137 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e384acfc-065f-480f-8e9b-ed6749a2706a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:18:46,139 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e384acfc-065f-480f-8e9b-ed6749a2706a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:18:46,147 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e384acfc-065f-480f-8e9b-ed6749a2706a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-06 22:18:46,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:18:46,311 INFO L262 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 29 conjunts are in the unsatisfiable core [2023-11-06 22:18:46,315 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:18:46,342 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-06 22:18:46,348 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-06 22:18:46,387 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2023-11-06 22:18:46,395 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2023-11-06 22:18:46,413 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2023-11-06 22:18:46,419 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2023-11-06 22:18:46,560 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-06 22:18:46,646 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:18:46,646 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:18:46,797 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:18:46,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [404327235] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:18:46,798 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:18:46,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 6] total 14 [2023-11-06 22:18:46,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597914358] [2023-11-06 22:18:46,798 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:18:46,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-06 22:18:46,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:18:46,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-06 22:18:46,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2023-11-06 22:18:46,800 INFO L87 Difference]: Start difference. First operand 145 states and 155 transitions. Second operand has 14 states, 14 states have (on average 6.0) internal successors, (84), 14 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:47,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:18:47,516 INFO L93 Difference]: Finished difference Result 193 states and 206 transitions. [2023-11-06 22:18:47,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-06 22:18:47,516 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.0) internal successors, (84), 14 states have internal predecessors, (84), 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 34 [2023-11-06 22:18:47,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:18:47,518 INFO L225 Difference]: With dead ends: 193 [2023-11-06 22:18:47,518 INFO L226 Difference]: Without dead ends: 193 [2023-11-06 22:18:47,518 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=102, Invalid=404, Unknown=0, NotChecked=0, Total=506 [2023-11-06 22:18:47,519 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 239 mSDsluCounter, 437 mSDsCounter, 0 mSdLazyCounter, 623 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 239 SdHoareTripleChecker+Valid, 516 SdHoareTripleChecker+Invalid, 640 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 623 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-06 22:18:47,519 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [239 Valid, 516 Invalid, 640 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 623 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-06 22:18:47,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2023-11-06 22:18:47,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 156. [2023-11-06 22:18:47,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 132 states have (on average 1.2424242424242424) internal successors, (164), 154 states have internal predecessors, (164), 4 states have call successors, (4), 1 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:47,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 168 transitions. [2023-11-06 22:18:47,524 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 168 transitions. Word has length 34 [2023-11-06 22:18:47,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:18:47,525 INFO L495 AbstractCegarLoop]: Abstraction has 156 states and 168 transitions. [2023-11-06 22:18:47,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.0) internal successors, (84), 14 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:47,525 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 168 transitions. [2023-11-06 22:18:47,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-11-06 22:18:47,526 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:18:47,526 INFO L195 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] [2023-11-06 22:18:47,534 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e384acfc-065f-480f-8e9b-ed6749a2706a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-06 22:18:47,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e384acfc-065f-480f-8e9b-ed6749a2706a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:18:47,732 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr69ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2023-11-06 22:18:47,732 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:18:47,733 INFO L85 PathProgramCache]: Analyzing trace with hash -1848902220, now seen corresponding path program 1 times [2023-11-06 22:18:47,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:18:47,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245063631] [2023-11-06 22:18:47,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:47,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:18:47,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:18:47,755 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:18:47,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:18:47,790 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:18:47,790 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-06 22:18:47,791 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr69ASSERT_VIOLATIONMEMORY_LEAK (70 of 71 remaining) [2023-11-06 22:18:47,793 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK (69 of 71 remaining) [2023-11-06 22:18:47,793 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (68 of 71 remaining) [2023-11-06 22:18:47,793 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (67 of 71 remaining) [2023-11-06 22:18:47,794 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (66 of 71 remaining) [2023-11-06 22:18:47,794 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (65 of 71 remaining) [2023-11-06 22:18:47,794 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (64 of 71 remaining) [2023-11-06 22:18:47,794 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (63 of 71 remaining) [2023-11-06 22:18:47,794 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (62 of 71 remaining) [2023-11-06 22:18:47,795 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (61 of 71 remaining) [2023-11-06 22:18:47,795 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (60 of 71 remaining) [2023-11-06 22:18:47,795 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (59 of 71 remaining) [2023-11-06 22:18:47,795 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (58 of 71 remaining) [2023-11-06 22:18:47,796 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (57 of 71 remaining) [2023-11-06 22:18:47,796 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (56 of 71 remaining) [2023-11-06 22:18:47,796 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (55 of 71 remaining) [2023-11-06 22:18:47,796 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (54 of 71 remaining) [2023-11-06 22:18:47,796 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (53 of 71 remaining) [2023-11-06 22:18:47,797 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (52 of 71 remaining) [2023-11-06 22:18:47,797 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (51 of 71 remaining) [2023-11-06 22:18:47,797 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (50 of 71 remaining) [2023-11-06 22:18:47,797 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (49 of 71 remaining) [2023-11-06 22:18:47,797 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (48 of 71 remaining) [2023-11-06 22:18:47,798 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (47 of 71 remaining) [2023-11-06 22:18:47,798 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (46 of 71 remaining) [2023-11-06 22:18:47,798 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (45 of 71 remaining) [2023-11-06 22:18:47,798 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (44 of 71 remaining) [2023-11-06 22:18:47,798 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (43 of 71 remaining) [2023-11-06 22:18:47,799 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (42 of 71 remaining) [2023-11-06 22:18:47,799 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (41 of 71 remaining) [2023-11-06 22:18:47,799 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE (40 of 71 remaining) [2023-11-06 22:18:47,799 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE (39 of 71 remaining) [2023-11-06 22:18:47,799 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE (38 of 71 remaining) [2023-11-06 22:18:47,800 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 71 remaining) [2023-11-06 22:18:47,800 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr32REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 71 remaining) [2023-11-06 22:18:47,800 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr33REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 71 remaining) [2023-11-06 22:18:47,800 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr34REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 71 remaining) [2023-11-06 22:18:47,801 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr35REQUIRES_VIOLATIONMEMORY_DEREFERENCE (33 of 71 remaining) [2023-11-06 22:18:47,801 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr36REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 71 remaining) [2023-11-06 22:18:47,801 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr37REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 71 remaining) [2023-11-06 22:18:47,801 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr38REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 71 remaining) [2023-11-06 22:18:47,801 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr39REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 71 remaining) [2023-11-06 22:18:47,802 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr40REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 71 remaining) [2023-11-06 22:18:47,802 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr41REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 71 remaining) [2023-11-06 22:18:47,802 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr42REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 71 remaining) [2023-11-06 22:18:47,802 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr43REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 71 remaining) [2023-11-06 22:18:47,802 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr44REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 71 remaining) [2023-11-06 22:18:47,803 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr45REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 71 remaining) [2023-11-06 22:18:47,803 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr46REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 71 remaining) [2023-11-06 22:18:47,803 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr47REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 71 remaining) [2023-11-06 22:18:47,803 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr48REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 71 remaining) [2023-11-06 22:18:47,803 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr49REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 71 remaining) [2023-11-06 22:18:47,804 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr50REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 71 remaining) [2023-11-06 22:18:47,804 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr51REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 71 remaining) [2023-11-06 22:18:47,804 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr52REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 71 remaining) [2023-11-06 22:18:47,804 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr53REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 71 remaining) [2023-11-06 22:18:47,804 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr54REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 71 remaining) [2023-11-06 22:18:47,805 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr55REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 71 remaining) [2023-11-06 22:18:47,805 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr56ASSERT_VIOLATIONMEMORY_FREE (12 of 71 remaining) [2023-11-06 22:18:47,805 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr57ASSERT_VIOLATIONMEMORY_FREE (11 of 71 remaining) [2023-11-06 22:18:47,805 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr58ASSERT_VIOLATIONMEMORY_FREE (10 of 71 remaining) [2023-11-06 22:18:47,806 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr59REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 71 remaining) [2023-11-06 22:18:47,806 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr60REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 71 remaining) [2023-11-06 22:18:47,806 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr61ASSERT_VIOLATIONMEMORY_FREE (7 of 71 remaining) [2023-11-06 22:18:47,806 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr62ASSERT_VIOLATIONMEMORY_FREE (6 of 71 remaining) [2023-11-06 22:18:47,806 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr63ASSERT_VIOLATIONMEMORY_FREE (5 of 71 remaining) [2023-11-06 22:18:47,807 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr64REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 71 remaining) [2023-11-06 22:18:47,807 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr65REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 71 remaining) [2023-11-06 22:18:47,807 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr66ASSERT_VIOLATIONMEMORY_FREE (2 of 71 remaining) [2023-11-06 22:18:47,807 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr67ASSERT_VIOLATIONMEMORY_FREE (1 of 71 remaining) [2023-11-06 22:18:47,807 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr68ASSERT_VIOLATIONMEMORY_FREE (0 of 71 remaining) [2023-11-06 22:18:47,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-11-06 22:18:47,811 INFO L445 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, 1, 1] [2023-11-06 22:18:47,815 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-06 22:18:47,862 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 10:18:47 BoogieIcfgContainer [2023-11-06 22:18:47,863 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-06 22:18:47,863 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-06 22:18:47,863 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-06 22:18:47,864 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-06 22:18:47,864 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:18:29" (3/4) ... [2023-11-06 22:18:47,867 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-06 22:18:47,868 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-06 22:18:47,872 INFO L158 Benchmark]: Toolchain (without parser) took 19320.72ms. Allocated memory was 155.2MB in the beginning and 270.5MB in the end (delta: 115.3MB). Free memory was 122.8MB in the beginning and 93.9MB in the end (delta: 28.9MB). Peak memory consumption was 145.2MB. Max. memory is 16.1GB. [2023-11-06 22:18:47,873 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 125.8MB. Free memory was 98.9MB in the beginning and 98.8MB in the end (delta: 132.9kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 22:18:47,873 INFO L158 Benchmark]: CACSL2BoogieTranslator took 501.96ms. Allocated memory is still 155.2MB. Free memory was 122.8MB in the beginning and 104.9MB in the end (delta: 17.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-06 22:18:47,873 INFO L158 Benchmark]: Boogie Procedure Inliner took 80.90ms. Allocated memory is still 155.2MB. Free memory was 104.4MB in the beginning and 102.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 22:18:47,874 INFO L158 Benchmark]: Boogie Preprocessor took 73.37ms. Allocated memory is still 155.2MB. Free memory was 102.3MB in the beginning and 100.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 22:18:47,874 INFO L158 Benchmark]: RCFGBuilder took 785.91ms. Allocated memory is still 155.2MB. Free memory was 100.2MB in the beginning and 73.6MB in the end (delta: 26.6MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2023-11-06 22:18:47,874 INFO L158 Benchmark]: TraceAbstraction took 17863.76ms. Allocated memory was 155.2MB in the beginning and 270.5MB in the end (delta: 115.3MB). Free memory was 72.5MB in the beginning and 93.9MB in the end (delta: -21.4MB). Peak memory consumption was 94.9MB. Max. memory is 16.1GB. [2023-11-06 22:18:47,875 INFO L158 Benchmark]: Witness Printer took 4.76ms. Allocated memory is still 270.5MB. Free memory is still 93.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 22:18:47,876 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 125.8MB. Free memory was 98.9MB in the beginning and 98.8MB in the end (delta: 132.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 501.96ms. Allocated memory is still 155.2MB. Free memory was 122.8MB in the beginning and 104.9MB in the end (delta: 17.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 80.90ms. Allocated memory is still 155.2MB. Free memory was 104.4MB in the beginning and 102.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 73.37ms. Allocated memory is still 155.2MB. Free memory was 102.3MB in the beginning and 100.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 785.91ms. Allocated memory is still 155.2MB. Free memory was 100.2MB in the beginning and 73.6MB in the end (delta: 26.6MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * TraceAbstraction took 17863.76ms. Allocated memory was 155.2MB in the beginning and 270.5MB in the end (delta: 115.3MB). Free memory was 72.5MB in the beginning and 93.9MB in the end (delta: -21.4MB). Peak memory consumption was 94.9MB. Max. memory is 16.1GB. * Witness Printer took 4.76ms. Allocated memory is still 270.5MB. Free memory is still 93.9MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 996]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 996. Possible FailurePath: [L998] struct TSLL* null = malloc(sizeof(struct TSLL)); [L999] null->next = ((void*)0) VAL [null={-1:0}] [L1000] null->prev = ((void*)0) VAL [null={-1:0}] [L1001] null->colour = BLACK VAL [null={-1:0}] [L1003] struct TSLL* list = malloc(sizeof(struct TSLL)); [L1004] list->next = null VAL [list={-2:0}, null={-1:0}] [L1005] list->prev = null VAL [list={-2:0}, null={-1:0}] [L1006] list->colour = BLACK VAL [list={-2:0}, null={-1:0}] [L1008] struct TSLL* end = list; VAL [end={-2:0}, list={-2:0}, null={-1:0}] [L1011] COND FALSE !(__VERIFIER_nondet_int()) [L1037] end = null [L1038] end = list VAL [end={-2:0}, list={-2:0}, null={-1:0}] [L1041] COND FALSE !(!(null != end)) VAL [end={-2:0}, list={-2:0}, null={-1:0}] [L1042] EXPR end->colour VAL [end->colour=1, end={-2:0}, list={-2:0}, null={-1:0}] [L1042] COND FALSE !(!(BLACK == end->colour)) [L1043] COND TRUE null != end VAL [end={-2:0}, list={-2:0}, null={-1:0}] [L1045] EXPR end->colour VAL [end->colour=1, end={-2:0}, list={-2:0}, null={-1:0}] [L1045] COND FALSE !(RED == end->colour) [L1052] EXPR end->next VAL [end->next={-1:0}, end={-2:0}, list={-2:0}, null={-1:0}] [L1052] end = end->next [L1043] COND FALSE !(null != end) VAL [end={-1:0}, list={-2:0}, null={-1:0}] [L1056] COND TRUE null != list VAL [end={-1:0}, list={-2:0}, null={-1:0}] [L1058] EXPR list->colour VAL [end={-1:0}, list->colour=1, list={-2:0}, null={-1:0}] [L1058] COND FALSE !(RED == list->colour) [L1067] EXPR list->next VAL [end={-1:0}, list->next={-1:0}, list={-2:0}, null={-1:0}] [L1067] end = list->next [L1068] free(list) VAL [end={-1:0}, list={-2:0}, null={-1:0}] [L1068] free(list) VAL [end={-1:0}, list={-2:0}, null={-1:0}] [L1068] free(list) [L1069] list = end VAL [end={-1:0}, list={-1:0}, null={-1:0}] [L1056] COND FALSE !(null != list) VAL [end={-1:0}, list={-1:0}, null={-1:0}] [L1073] return 0; VAL [\result=0, end={-1:0}, list={-1:0}, null={-1:0}] - UnprovableResult [Line: 985]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1061]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1061]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1061]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1063]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1063]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1063]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1068]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1068]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1068]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 171 locations, 71 error locations. Started 1 CEGAR loops. OverallTime: 17.8s, OverallIterations: 25, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 8.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3405 SdHoareTripleChecker+Valid, 5.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3405 mSDsluCounter, 6522 SdHoareTripleChecker+Invalid, 5.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4256 mSDsCounter, 288 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6513 IncrementalHoareTripleChecker+Invalid, 6801 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 288 mSolverCounterUnsat, 2266 mSDtfsCounter, 6513 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 410 GetRequests, 202 SyntacticMatches, 1 SemanticMatches, 207 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 462 ImplicationChecksByTransitivity, 2.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=171occurred in iteration=0, InterpolantAutomatonStates: 184, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 24 MinimizatonAttempts, 364 StatesRemovedByMinimization, 17 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 6.5s InterpolantComputationTime, 675 NumberOfCodeBlocks, 675 NumberOfCodeBlocksAsserted, 29 NumberOfCheckSat, 669 ConstructedInterpolants, 0 QuantifiedInterpolants, 4554 SizeOfPredicates, 16 NumberOfNonLiveVariables, 824 ConjunctsInSsa, 67 ConjunctsInUnsatCore, 30 InterpolantComputations, 22 PerfectInterpolantSequences, 8/19 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-06 22:18:47,923 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e384acfc-065f-480f-8e9b-ed6749a2706a/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e384acfc-065f-480f-8e9b-ed6749a2706a/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e384acfc-065f-480f-8e9b-ed6749a2706a/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e384acfc-065f-480f-8e9b-ed6749a2706a/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e384acfc-065f-480f-8e9b-ed6749a2706a/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e384acfc-065f-480f-8e9b-ed6749a2706a/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e384acfc-065f-480f-8e9b-ed6749a2706a/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 503e46fe74670dc8b1fd2e8b2c5a408fc01c83cb421ff9aefb8796417315d291 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:18:50,566 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:18:50,644 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e384acfc-065f-480f-8e9b-ed6749a2706a/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-11-06 22:18:50,650 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:18:50,651 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:18:50,680 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:18:50,680 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:18:50,681 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:18:50,682 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:18:50,682 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:18:50,683 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:18:50,684 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:18:50,684 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:18:50,685 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:18:50,686 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:18:50,686 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:18:50,687 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:18:50,687 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:18:50,688 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-06 22:18:50,688 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-06 22:18:50,689 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-06 22:18:50,689 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:18:50,690 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-06 22:18:50,690 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-06 22:18:50,691 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-06 22:18:50,691 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 22:18:50,691 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:18:50,692 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:18:50,692 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:18:50,693 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:18:50,693 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:18:50,694 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:18:50,694 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:18:50,694 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:18:50,695 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-06 22:18:50,695 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-06 22:18:50,696 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:18:50,696 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:18:50,696 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:18:50,697 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-06 22:18:50,697 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:18:50,698 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e384acfc-065f-480f-8e9b-ed6749a2706a/bin/uautomizer-verify-WvqO1wxjHP/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e384acfc-065f-480f-8e9b-ed6749a2706a/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 503e46fe74670dc8b1fd2e8b2c5a408fc01c83cb421ff9aefb8796417315d291 [2023-11-06 22:18:51,092 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:18:51,120 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:18:51,127 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:18:51,128 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:18:51,129 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:18:51,131 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e384acfc-065f-480f-8e9b-ed6749a2706a/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i [2023-11-06 22:18:54,310 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:18:54,663 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:18:54,663 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e384acfc-065f-480f-8e9b-ed6749a2706a/sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i [2023-11-06 22:18:54,689 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e384acfc-065f-480f-8e9b-ed6749a2706a/bin/uautomizer-verify-WvqO1wxjHP/data/231fcabcf/1da8d06dccbc40bb9a69e0d53e393501/FLAG0fe7610b9 [2023-11-06 22:18:54,710 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e384acfc-065f-480f-8e9b-ed6749a2706a/bin/uautomizer-verify-WvqO1wxjHP/data/231fcabcf/1da8d06dccbc40bb9a69e0d53e393501 [2023-11-06 22:18:54,721 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:18:54,724 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:18:54,729 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:18:54,729 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:18:54,735 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:18:54,736 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:18:54" (1/1) ... [2023-11-06 22:18:54,737 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f79edf6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:18:54, skipping insertion in model container [2023-11-06 22:18:54,737 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:18:54" (1/1) ... [2023-11-06 22:18:54,817 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:18:55,279 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:18:55,318 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:18:55,390 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:18:55,428 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:18:55,428 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:18:55 WrapperNode [2023-11-06 22:18:55,429 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:18:55,430 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:18:55,430 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:18:55,431 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:18:55,438 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:18:55" (1/1) ... [2023-11-06 22:18:55,460 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:18:55" (1/1) ... [2023-11-06 22:18:55,492 INFO L138 Inliner]: procedures = 122, calls = 50, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 165 [2023-11-06 22:18:55,493 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:18:55,494 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:18:55,494 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:18:55,494 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:18:55,503 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:18:55" (1/1) ... [2023-11-06 22:18:55,504 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:18:55" (1/1) ... [2023-11-06 22:18:55,508 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:18:55" (1/1) ... [2023-11-06 22:18:55,509 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:18:55" (1/1) ... [2023-11-06 22:18:55,521 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:18:55" (1/1) ... [2023-11-06 22:18:55,526 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:18:55" (1/1) ... [2023-11-06 22:18:55,529 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:18:55" (1/1) ... [2023-11-06 22:18:55,531 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:18:55" (1/1) ... [2023-11-06 22:18:55,535 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:18:55,536 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:18:55,537 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:18:55,537 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:18:55,538 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:18:55" (1/1) ... [2023-11-06 22:18:55,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:18:55,575 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e384acfc-065f-480f-8e9b-ed6749a2706a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:18:55,586 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e384acfc-065f-480f-8e9b-ed6749a2706a/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:18:55,602 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e384acfc-065f-480f-8e9b-ed6749a2706a/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:18:55,628 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-11-06 22:18:55,629 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-11-06 22:18:55,629 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-06 22:18:55,629 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-06 22:18:55,629 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:18:55,629 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-06 22:18:55,629 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-06 22:18:55,630 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:18:55,630 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-06 22:18:55,630 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-06 22:18:55,630 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:18:55,630 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:18:55,805 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:18:55,807 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:18:56,820 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:18:56,830 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:18:56,831 INFO L302 CfgBuilder]: Removed 17 assume(true) statements. [2023-11-06 22:18:56,834 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:18:56 BoogieIcfgContainer [2023-11-06 22:18:56,834 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:18:56,837 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:18:56,838 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:18:56,841 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:18:56,842 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:18:54" (1/3) ... [2023-11-06 22:18:56,844 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1248f562 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:18:56, skipping insertion in model container [2023-11-06 22:18:56,844 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:18:55" (2/3) ... [2023-11-06 22:18:56,845 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1248f562 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:18:56, skipping insertion in model container [2023-11-06 22:18:56,845 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:18:56" (3/3) ... [2023-11-06 22:18:56,846 INFO L112 eAbstractionObserver]: Analyzing ICFG dll-rb-sentinel-1.i [2023-11-06 22:18:56,867 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:18:56,868 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 71 error locations. [2023-11-06 22:18:56,939 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:18:56,948 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@5362f0eb, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:18:56,948 INFO L358 AbstractCegarLoop]: Starting to check reachability of 71 error locations. [2023-11-06 22:18:56,956 INFO L276 IsEmpty]: Start isEmpty. Operand has 171 states, 91 states have (on average 2.120879120879121) internal successors, (193), 162 states have internal predecessors, (193), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-06 22:18:56,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-06 22:18:56,963 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:18:56,964 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-06 22:18:56,965 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2023-11-06 22:18:56,989 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:18:56,990 INFO L85 PathProgramCache]: Analyzing trace with hash 38794, now seen corresponding path program 1 times [2023-11-06 22:18:57,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:18:57,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1078385559] [2023-11-06 22:18:57,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:57,003 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:18:57,004 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e384acfc-065f-480f-8e9b-ed6749a2706a/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:18:57,010 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e384acfc-065f-480f-8e9b-ed6749a2706a/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:18:57,012 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e384acfc-065f-480f-8e9b-ed6749a2706a/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-06 22:18:57,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:18:57,109 INFO L262 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:18:57,115 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:18:57,199 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-06 22:18:57,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:18:57,211 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:18:57,212 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:18:57,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1078385559] [2023-11-06 22:18:57,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1078385559] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:18:57,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:18:57,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:18:57,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703033595] [2023-11-06 22:18:57,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:18:57,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:18:57,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:18:57,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:18:57,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:18:57,271 INFO L87 Difference]: Start difference. First operand has 171 states, 91 states have (on average 2.120879120879121) internal successors, (193), 162 states have internal predecessors, (193), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:57,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:18:57,734 INFO L93 Difference]: Finished difference Result 187 states and 200 transitions. [2023-11-06 22:18:57,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:18:57,737 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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 3 [2023-11-06 22:18:57,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:18:57,749 INFO L225 Difference]: With dead ends: 187 [2023-11-06 22:18:57,750 INFO L226 Difference]: Without dead ends: 185 [2023-11-06 22:18:57,752 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:18:57,757 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 142 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-06 22:18:57,760 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 116 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-06 22:18:57,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2023-11-06 22:18:57,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 157. [2023-11-06 22:18:57,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 82 states have (on average 1.9634146341463414) internal successors, (161), 155 states have internal predecessors, (161), 7 states have call successors, (7), 1 states have call predecessors, (7), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:57,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 168 transitions. [2023-11-06 22:18:57,811 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 168 transitions. Word has length 3 [2023-11-06 22:18:57,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:18:57,811 INFO L495 AbstractCegarLoop]: Abstraction has 157 states and 168 transitions. [2023-11-06 22:18:57,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:57,812 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 168 transitions. [2023-11-06 22:18:57,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-06 22:18:57,812 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:18:57,813 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-06 22:18:57,831 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e384acfc-065f-480f-8e9b-ed6749a2706a/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-11-06 22:18:58,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e384acfc-065f-480f-8e9b-ed6749a2706a/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:18:58,025 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2023-11-06 22:18:58,025 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:18:58,026 INFO L85 PathProgramCache]: Analyzing trace with hash 38795, now seen corresponding path program 1 times [2023-11-06 22:18:58,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:18:58,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2122618408] [2023-11-06 22:18:58,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:58,027 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:18:58,027 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e384acfc-065f-480f-8e9b-ed6749a2706a/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:18:58,028 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e384acfc-065f-480f-8e9b-ed6749a2706a/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:18:58,030 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e384acfc-065f-480f-8e9b-ed6749a2706a/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-11-06 22:18:58,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:18:58,078 INFO L262 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:18:58,080 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:18:58,088 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-06 22:18:58,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:18:58,102 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:18:58,102 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:18:58,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2122618408] [2023-11-06 22:18:58,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2122618408] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:18:58,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:18:58,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:18:58,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805029881] [2023-11-06 22:18:58,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:18:58,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:18:58,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:18:58,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:18:58,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:18:58,107 INFO L87 Difference]: Start difference. First operand 157 states and 168 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:58,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:18:58,555 INFO L93 Difference]: Finished difference Result 154 states and 165 transitions. [2023-11-06 22:18:58,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:18:58,557 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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 3 [2023-11-06 22:18:58,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:18:58,559 INFO L225 Difference]: With dead ends: 154 [2023-11-06 22:18:58,559 INFO L226 Difference]: Without dead ends: 154 [2023-11-06 22:18:58,559 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:18:58,560 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 151 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-06 22:18:58,561 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 95 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-06 22:18:58,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2023-11-06 22:18:58,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2023-11-06 22:18:58,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 82 states have (on average 1.9268292682926829) internal successors, (158), 152 states have internal predecessors, (158), 7 states have call successors, (7), 1 states have call predecessors, (7), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:58,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 165 transitions. [2023-11-06 22:18:58,584 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 165 transitions. Word has length 3 [2023-11-06 22:18:58,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:18:58,585 INFO L495 AbstractCegarLoop]: Abstraction has 154 states and 165 transitions. [2023-11-06 22:18:58,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:58,585 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 165 transitions. [2023-11-06 22:18:58,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-06 22:18:58,586 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:18:58,586 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:18:58,604 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e384acfc-065f-480f-8e9b-ed6749a2706a/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-11-06 22:18:58,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e384acfc-065f-480f-8e9b-ed6749a2706a/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:18:58,797 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2023-11-06 22:18:58,798 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:18:58,798 INFO L85 PathProgramCache]: Analyzing trace with hash 1466876622, now seen corresponding path program 1 times [2023-11-06 22:18:58,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:18:58,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1618550739] [2023-11-06 22:18:58,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:58,800 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:18:58,800 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e384acfc-065f-480f-8e9b-ed6749a2706a/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:18:58,801 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e384acfc-065f-480f-8e9b-ed6749a2706a/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:18:58,804 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e384acfc-065f-480f-8e9b-ed6749a2706a/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-11-06 22:18:58,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:18:58,884 INFO L262 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:18:58,886 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:18:58,892 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-06 22:18:58,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:18:58,899 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:18:58,899 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:18:58,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1618550739] [2023-11-06 22:18:58,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1618550739] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:18:58,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:18:58,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:18:58,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956872240] [2023-11-06 22:18:58,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:18:58,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:18:58,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:18:58,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:18:58,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:18:58,902 INFO L87 Difference]: Start difference. First operand 154 states and 165 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:59,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:18:59,238 INFO L93 Difference]: Finished difference Result 153 states and 164 transitions. [2023-11-06 22:18:59,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:18:59,242 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-11-06 22:18:59,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:18:59,244 INFO L225 Difference]: With dead ends: 153 [2023-11-06 22:18:59,244 INFO L226 Difference]: Without dead ends: 153 [2023-11-06 22:18:59,245 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:18:59,246 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 128 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-06 22:18:59,246 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 101 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-06 22:18:59,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2023-11-06 22:18:59,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 149. [2023-11-06 22:18:59,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 84 states have (on average 1.8452380952380953) internal successors, (155), 147 states have internal predecessors, (155), 7 states have call successors, (7), 1 states have call predecessors, (7), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:59,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 162 transitions. [2023-11-06 22:18:59,257 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 162 transitions. Word has length 7 [2023-11-06 22:18:59,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:18:59,258 INFO L495 AbstractCegarLoop]: Abstraction has 149 states and 162 transitions. [2023-11-06 22:18:59,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:59,258 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 162 transitions. [2023-11-06 22:18:59,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-06 22:18:59,259 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:18:59,259 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:18:59,275 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e384acfc-065f-480f-8e9b-ed6749a2706a/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-11-06 22:18:59,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e384acfc-065f-480f-8e9b-ed6749a2706a/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:18:59,471 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2023-11-06 22:18:59,472 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:18:59,472 INFO L85 PathProgramCache]: Analyzing trace with hash 1466876623, now seen corresponding path program 1 times [2023-11-06 22:18:59,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:18:59,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1524439474] [2023-11-06 22:18:59,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:59,474 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:18:59,475 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e384acfc-065f-480f-8e9b-ed6749a2706a/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:18:59,476 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e384acfc-065f-480f-8e9b-ed6749a2706a/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:18:59,502 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e384acfc-065f-480f-8e9b-ed6749a2706a/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-11-06 22:18:59,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:18:59,566 INFO L262 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:18:59,567 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:18:59,576 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-06 22:18:59,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:18:59,590 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:18:59,590 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:18:59,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1524439474] [2023-11-06 22:18:59,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1524439474] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:18:59,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:18:59,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:18:59,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824438055] [2023-11-06 22:18:59,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:18:59,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:18:59,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:18:59,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:18:59,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:18:59,593 INFO L87 Difference]: Start difference. First operand 149 states and 162 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:19:00,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:19:00,016 INFO L93 Difference]: Finished difference Result 166 states and 178 transitions. [2023-11-06 22:19:00,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:19:00,018 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-11-06 22:19:00,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:19:00,019 INFO L225 Difference]: With dead ends: 166 [2023-11-06 22:19:00,020 INFO L226 Difference]: Without dead ends: 166 [2023-11-06 22:19:00,020 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:19:00,021 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 124 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-06 22:19:00,021 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 108 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-06 22:19:00,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2023-11-06 22:19:00,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 153. [2023-11-06 22:19:00,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 91 states have (on average 1.7472527472527473) internal successors, (159), 151 states have internal predecessors, (159), 7 states have call successors, (7), 1 states have call predecessors, (7), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:19:00,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 166 transitions. [2023-11-06 22:19:00,052 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 166 transitions. Word has length 7 [2023-11-06 22:19:00,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:19:00,053 INFO L495 AbstractCegarLoop]: Abstraction has 153 states and 166 transitions. [2023-11-06 22:19:00,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:19:00,053 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 166 transitions. [2023-11-06 22:19:00,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-06 22:19:00,054 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:19:00,054 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:19:00,075 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e384acfc-065f-480f-8e9b-ed6749a2706a/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-11-06 22:19:00,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e384acfc-065f-480f-8e9b-ed6749a2706a/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:19:00,265 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2023-11-06 22:19:00,266 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:19:00,266 INFO L85 PathProgramCache]: Analyzing trace with hash -1904930185, now seen corresponding path program 1 times [2023-11-06 22:19:00,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:19:00,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1192359078] [2023-11-06 22:19:00,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:19:00,267 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:19:00,267 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e384acfc-065f-480f-8e9b-ed6749a2706a/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:19:00,268 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e384acfc-065f-480f-8e9b-ed6749a2706a/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:19:00,273 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e384acfc-065f-480f-8e9b-ed6749a2706a/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-11-06 22:19:00,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:19:00,447 INFO L262 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:19:00,452 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:19:00,460 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-06 22:19:00,529 INFO L322 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-06 22:19:00,530 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2023-11-06 22:19:00,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:19:00,557 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:19:00,557 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:19:00,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1192359078] [2023-11-06 22:19:00,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1192359078] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:19:00,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:19:00,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:19:00,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027831607] [2023-11-06 22:19:00,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:19:00,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:19:00,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:19:00,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:19:00,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:19:00,561 INFO L87 Difference]: Start difference. First operand 153 states and 166 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:19:01,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:19:01,080 INFO L93 Difference]: Finished difference Result 154 states and 168 transitions. [2023-11-06 22:19:01,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:19:01,080 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2023-11-06 22:19:01,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:19:01,082 INFO L225 Difference]: With dead ends: 154 [2023-11-06 22:19:01,082 INFO L226 Difference]: Without dead ends: 154 [2023-11-06 22:19:01,082 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:19:01,083 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 202 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-06 22:19:01,083 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [202 Valid, 86 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-06 22:19:01,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2023-11-06 22:19:01,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 140. [2023-11-06 22:19:01,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 93 states have (on average 1.5913978494623655) internal successors, (148), 138 states have internal predecessors, (148), 7 states have call successors, (7), 1 states have call predecessors, (7), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:19:01,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 155 transitions. [2023-11-06 22:19:01,091 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 155 transitions. Word has length 13 [2023-11-06 22:19:01,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:19:01,092 INFO L495 AbstractCegarLoop]: Abstraction has 140 states and 155 transitions. [2023-11-06 22:19:01,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:19:01,092 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 155 transitions. [2023-11-06 22:19:01,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-06 22:19:01,093 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:19:01,093 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:19:01,110 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e384acfc-065f-480f-8e9b-ed6749a2706a/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-11-06 22:19:01,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e384acfc-065f-480f-8e9b-ed6749a2706a/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:19:01,306 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2023-11-06 22:19:01,306 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:19:01,306 INFO L85 PathProgramCache]: Analyzing trace with hash -1904930184, now seen corresponding path program 1 times [2023-11-06 22:19:01,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:19:01,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [258685725] [2023-11-06 22:19:01,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:19:01,307 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:19:01,308 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e384acfc-065f-480f-8e9b-ed6749a2706a/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:19:01,309 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e384acfc-065f-480f-8e9b-ed6749a2706a/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:19:01,310 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e384acfc-065f-480f-8e9b-ed6749a2706a/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-11-06 22:19:01,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:19:01,457 INFO L262 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-06 22:19:01,460 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:19:01,468 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-06 22:19:01,552 INFO L322 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-11-06 22:19:01,553 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2023-11-06 22:19:01,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:19:01,569 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:19:01,569 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:19:01,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [258685725] [2023-11-06 22:19:01,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [258685725] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:19:01,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:19:01,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:19:01,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106127740] [2023-11-06 22:19:01,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:19:01,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:19:01,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:19:01,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:19:01,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:19:01,572 INFO L87 Difference]: Start difference. First operand 140 states and 155 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:19:02,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:19:02,208 INFO L93 Difference]: Finished difference Result 179 states and 195 transitions. [2023-11-06 22:19:02,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:19:02,209 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2023-11-06 22:19:02,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:19:02,210 INFO L225 Difference]: With dead ends: 179 [2023-11-06 22:19:02,210 INFO L226 Difference]: Without dead ends: 179 [2023-11-06 22:19:02,210 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:19:02,211 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 170 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-06 22:19:02,212 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 122 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-06 22:19:02,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2023-11-06 22:19:02,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 150. [2023-11-06 22:19:02,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 104 states have (on average 1.5480769230769231) internal successors, (161), 148 states have internal predecessors, (161), 7 states have call successors, (7), 1 states have call predecessors, (7), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:19:02,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 168 transitions. [2023-11-06 22:19:02,219 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 168 transitions. Word has length 13 [2023-11-06 22:19:02,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:19:02,220 INFO L495 AbstractCegarLoop]: Abstraction has 150 states and 168 transitions. [2023-11-06 22:19:02,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:19:02,220 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 168 transitions. [2023-11-06 22:19:02,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-06 22:19:02,221 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:19:02,221 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:19:02,237 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e384acfc-065f-480f-8e9b-ed6749a2706a/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-11-06 22:19:02,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e384acfc-065f-480f-8e9b-ed6749a2706a/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:19:02,433 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2023-11-06 22:19:02,433 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:19:02,434 INFO L85 PathProgramCache]: Analyzing trace with hash 1396145002, now seen corresponding path program 1 times [2023-11-06 22:19:02,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:19:02,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [707769125] [2023-11-06 22:19:02,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:19:02,434 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:19:02,435 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e384acfc-065f-480f-8e9b-ed6749a2706a/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:19:02,436 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e384acfc-065f-480f-8e9b-ed6749a2706a/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:19:02,438 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e384acfc-065f-480f-8e9b-ed6749a2706a/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-11-06 22:19:02,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:19:02,558 INFO L262 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-06 22:19:02,560 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:19:02,564 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-06 22:19:02,590 INFO L322 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-06 22:19:02,591 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-11-06 22:19:02,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:19:02,625 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:19:02,625 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:19:02,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [707769125] [2023-11-06 22:19:02,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [707769125] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:19:02,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:19:02,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:19:02,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139741512] [2023-11-06 22:19:02,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:19:02,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:19:02,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:19:02,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:19:02,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:19:02,628 INFO L87 Difference]: Start difference. First operand 150 states and 168 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:19:03,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:19:03,266 INFO L93 Difference]: Finished difference Result 194 states and 208 transitions. [2023-11-06 22:19:03,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:19:03,268 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2023-11-06 22:19:03,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:19:03,270 INFO L225 Difference]: With dead ends: 194 [2023-11-06 22:19:03,270 INFO L226 Difference]: Without dead ends: 194 [2023-11-06 22:19:03,271 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:19:03,271 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 295 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 295 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-06 22:19:03,272 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [295 Valid, 168 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-06 22:19:03,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2023-11-06 22:19:03,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 149. [2023-11-06 22:19:03,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 104 states have (on average 1.5192307692307692) internal successors, (158), 147 states have internal predecessors, (158), 6 states have call successors, (6), 1 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:19:03,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 164 transitions. [2023-11-06 22:19:03,280 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 164 transitions. Word has length 17 [2023-11-06 22:19:03,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:19:03,280 INFO L495 AbstractCegarLoop]: Abstraction has 149 states and 164 transitions. [2023-11-06 22:19:03,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:19:03,280 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 164 transitions. [2023-11-06 22:19:03,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-06 22:19:03,281 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:19:03,281 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:19:03,294 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e384acfc-065f-480f-8e9b-ed6749a2706a/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-11-06 22:19:03,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e384acfc-065f-480f-8e9b-ed6749a2706a/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:19:03,490 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2023-11-06 22:19:03,491 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:19:03,491 INFO L85 PathProgramCache]: Analyzing trace with hash -372244357, now seen corresponding path program 1 times [2023-11-06 22:19:03,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:19:03,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [969311837] [2023-11-06 22:19:03,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:19:03,492 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:19:03,492 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e384acfc-065f-480f-8e9b-ed6749a2706a/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:19:03,498 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e384acfc-065f-480f-8e9b-ed6749a2706a/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:19:03,517 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e384acfc-065f-480f-8e9b-ed6749a2706a/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-11-06 22:19:03,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:19:03,642 INFO L262 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:19:03,644 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:19:03,657 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-06 22:19:03,675 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-06 22:19:03,700 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-11-06 22:19:03,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:19:03,727 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:19:03,727 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:19:03,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [969311837] [2023-11-06 22:19:03,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [969311837] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:19:03,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:19:03,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:19:03,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555260853] [2023-11-06 22:19:03,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:19:03,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:19:03,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:19:03,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:19:03,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:19:03,730 INFO L87 Difference]: Start difference. First operand 149 states and 164 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:19:04,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:19:04,318 INFO L93 Difference]: Finished difference Result 148 states and 162 transitions. [2023-11-06 22:19:04,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:19:04,319 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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 16 [2023-11-06 22:19:04,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:19:04,320 INFO L225 Difference]: With dead ends: 148 [2023-11-06 22:19:04,321 INFO L226 Difference]: Without dead ends: 148 [2023-11-06 22:19:04,321 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:19:04,322 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 10 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 350 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-06 22:19:04,322 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 350 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-06 22:19:04,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2023-11-06 22:19:04,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2023-11-06 22:19:04,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 104 states have (on average 1.5) internal successors, (156), 146 states have internal predecessors, (156), 6 states have call successors, (6), 1 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:19:04,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 162 transitions. [2023-11-06 22:19:04,329 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 162 transitions. Word has length 16 [2023-11-06 22:19:04,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:19:04,329 INFO L495 AbstractCegarLoop]: Abstraction has 148 states and 162 transitions. [2023-11-06 22:19:04,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:19:04,330 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 162 transitions. [2023-11-06 22:19:04,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-06 22:19:04,330 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:19:04,331 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:19:04,342 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e384acfc-065f-480f-8e9b-ed6749a2706a/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2023-11-06 22:19:04,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e384acfc-065f-480f-8e9b-ed6749a2706a/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:19:04,534 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2023-11-06 22:19:04,534 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:19:04,534 INFO L85 PathProgramCache]: Analyzing trace with hash -372244356, now seen corresponding path program 1 times [2023-11-06 22:19:04,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:19:04,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [596386118] [2023-11-06 22:19:04,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:19:04,535 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:19:04,535 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e384acfc-065f-480f-8e9b-ed6749a2706a/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:19:04,536 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e384acfc-065f-480f-8e9b-ed6749a2706a/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:19:04,537 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e384acfc-065f-480f-8e9b-ed6749a2706a/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-11-06 22:19:04,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:19:04,680 INFO L262 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-06 22:19:04,682 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:19:04,692 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-06 22:19:04,716 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-06 22:19:04,721 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-06 22:19:04,769 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-11-06 22:19:04,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:19:04,792 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:19:04,792 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:19:04,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [596386118] [2023-11-06 22:19:04,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [596386118] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:19:04,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:19:04,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:19:04,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740750194] [2023-11-06 22:19:04,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:19:04,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:19:04,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:19:04,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:19:04,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:19:04,795 INFO L87 Difference]: Start difference. First operand 148 states and 162 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:19:05,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:19:05,468 INFO L93 Difference]: Finished difference Result 147 states and 160 transitions. [2023-11-06 22:19:05,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:19:05,469 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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 16 [2023-11-06 22:19:05,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:19:05,470 INFO L225 Difference]: With dead ends: 147 [2023-11-06 22:19:05,470 INFO L226 Difference]: Without dead ends: 147 [2023-11-06 22:19:05,470 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:19:05,471 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 5 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 335 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-06 22:19:05,471 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 335 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-06 22:19:05,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2023-11-06 22:19:05,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2023-11-06 22:19:05,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 104 states have (on average 1.4807692307692308) internal successors, (154), 145 states have internal predecessors, (154), 6 states have call successors, (6), 1 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:19:05,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 160 transitions. [2023-11-06 22:19:05,476 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 160 transitions. Word has length 16 [2023-11-06 22:19:05,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:19:05,477 INFO L495 AbstractCegarLoop]: Abstraction has 147 states and 160 transitions. [2023-11-06 22:19:05,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:19:05,477 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 160 transitions. [2023-11-06 22:19:05,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-06 22:19:05,477 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:19:05,478 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:19:05,494 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e384acfc-065f-480f-8e9b-ed6749a2706a/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Ended with exit code 0 [2023-11-06 22:19:05,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e384acfc-065f-480f-8e9b-ed6749a2706a/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:19:05,678 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2023-11-06 22:19:05,678 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:19:05,679 INFO L85 PathProgramCache]: Analyzing trace with hash -544756750, now seen corresponding path program 1 times [2023-11-06 22:19:05,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:19:05,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [903808625] [2023-11-06 22:19:05,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:19:05,679 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:19:05,679 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e384acfc-065f-480f-8e9b-ed6749a2706a/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:19:05,680 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e384acfc-065f-480f-8e9b-ed6749a2706a/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:19:05,681 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e384acfc-065f-480f-8e9b-ed6749a2706a/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-11-06 22:19:05,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:19:05,796 INFO L262 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-06 22:19:05,798 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:19:05,814 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-06 22:19:05,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:19:05,894 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:19:05,894 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:19:05,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [903808625] [2023-11-06 22:19:05,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [903808625] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:19:05,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:19:05,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 22:19:05,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080398344] [2023-11-06 22:19:05,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:19:05,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:19:05,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:19:05,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:19:05,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:19:05,896 INFO L87 Difference]: Start difference. First operand 147 states and 160 transitions. Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:19:06,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:19:06,531 INFO L93 Difference]: Finished difference Result 199 states and 218 transitions. [2023-11-06 22:19:06,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:19:06,534 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2023-11-06 22:19:06,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:19:06,536 INFO L225 Difference]: With dead ends: 199 [2023-11-06 22:19:06,536 INFO L226 Difference]: Without dead ends: 199 [2023-11-06 22:19:06,536 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:19:06,537 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 229 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 361 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-06 22:19:06,537 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [229 Valid, 361 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-06 22:19:06,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2023-11-06 22:19:06,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 152. [2023-11-06 22:19:06,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 109 states have (on average 1.4587155963302751) internal successors, (159), 150 states have internal predecessors, (159), 6 states have call successors, (6), 1 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:19:06,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 165 transitions. [2023-11-06 22:19:06,543 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 165 transitions. Word has length 20 [2023-11-06 22:19:06,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:19:06,543 INFO L495 AbstractCegarLoop]: Abstraction has 152 states and 165 transitions. [2023-11-06 22:19:06,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:19:06,544 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 165 transitions. [2023-11-06 22:19:06,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-06 22:19:06,544 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:19:06,545 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:19:06,554 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e384acfc-065f-480f-8e9b-ed6749a2706a/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Ended with exit code 0 [2023-11-06 22:19:06,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e384acfc-065f-480f-8e9b-ed6749a2706a/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:19:06,754 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2023-11-06 22:19:06,754 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:19:06,754 INFO L85 PathProgramCache]: Analyzing trace with hash -2002803523, now seen corresponding path program 1 times [2023-11-06 22:19:06,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:19:06,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1709993633] [2023-11-06 22:19:06,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:19:06,755 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:19:06,755 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e384acfc-065f-480f-8e9b-ed6749a2706a/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:19:06,756 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e384acfc-065f-480f-8e9b-ed6749a2706a/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:19:06,757 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e384acfc-065f-480f-8e9b-ed6749a2706a/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-11-06 22:19:06,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:19:06,927 INFO L262 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-06 22:19:06,929 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:19:06,935 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-06 22:19:06,988 INFO L322 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-11-06 22:19:06,988 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2023-11-06 22:19:07,046 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-06 22:19:07,169 INFO L322 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-06 22:19:07,169 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 35 [2023-11-06 22:19:07,210 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2023-11-06 22:19:07,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:19:07,295 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:19:07,295 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:19:07,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1709993633] [2023-11-06 22:19:07,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1709993633] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:19:07,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:19:07,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-06 22:19:07,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350865288] [2023-11-06 22:19:07,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:19:07,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-06 22:19:07,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:19:07,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-06 22:19:07,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:19:07,298 INFO L87 Difference]: Start difference. First operand 152 states and 165 transitions. Second operand has 9 states, 8 states have (on average 2.5) internal successors, (20), 9 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:19:08,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:19:08,818 INFO L93 Difference]: Finished difference Result 180 states and 199 transitions. [2023-11-06 22:19:08,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-06 22:19:08,819 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.5) internal successors, (20), 9 states have internal predecessors, (20), 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 20 [2023-11-06 22:19:08,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:19:08,820 INFO L225 Difference]: With dead ends: 180 [2023-11-06 22:19:08,820 INFO L226 Difference]: Without dead ends: 180 [2023-11-06 22:19:08,820 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2023-11-06 22:19:08,821 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 205 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 509 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 283 SdHoareTripleChecker+Invalid, 520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 509 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-06 22:19:08,821 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [205 Valid, 283 Invalid, 520 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 509 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-06 22:19:08,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2023-11-06 22:19:08,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 151. [2023-11-06 22:19:08,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 109 states have (on average 1.4495412844036697) internal successors, (158), 149 states have internal predecessors, (158), 6 states have call successors, (6), 1 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:19:08,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 164 transitions. [2023-11-06 22:19:08,827 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 164 transitions. Word has length 20 [2023-11-06 22:19:08,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:19:08,827 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 164 transitions. [2023-11-06 22:19:08,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.5) internal successors, (20), 9 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:19:08,828 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 164 transitions. [2023-11-06 22:19:08,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-06 22:19:08,828 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:19:08,828 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:19:08,841 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e384acfc-065f-480f-8e9b-ed6749a2706a/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2023-11-06 22:19:09,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e384acfc-065f-480f-8e9b-ed6749a2706a/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:19:09,040 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2023-11-06 22:19:09,041 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:19:09,041 INFO L85 PathProgramCache]: Analyzing trace with hash -2002803522, now seen corresponding path program 1 times [2023-11-06 22:19:09,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:19:09,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [877379677] [2023-11-06 22:19:09,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:19:09,042 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:19:09,042 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e384acfc-065f-480f-8e9b-ed6749a2706a/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:19:09,043 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e384acfc-065f-480f-8e9b-ed6749a2706a/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:19:09,049 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e384acfc-065f-480f-8e9b-ed6749a2706a/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-11-06 22:19:09,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:19:09,247 INFO L262 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-06 22:19:09,251 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:19:09,262 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-06 22:19:09,312 INFO L322 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-06 22:19:09,312 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-11-06 22:19:09,321 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-06 22:19:09,357 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-06 22:19:09,365 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-06 22:19:09,469 INFO L322 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-06 22:19:09,469 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 45 [2023-11-06 22:19:09,486 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 11 [2023-11-06 22:19:09,525 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-11-06 22:19:09,537 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-11-06 22:19:09,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:19:09,591 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:19:09,592 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:19:09,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [877379677] [2023-11-06 22:19:09,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [877379677] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:19:09,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:19:09,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-06 22:19:09,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620476289] [2023-11-06 22:19:09,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:19:09,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-06 22:19:09,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:19:09,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-06 22:19:09,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:19:09,594 INFO L87 Difference]: Start difference. First operand 151 states and 164 transitions. Second operand has 9 states, 8 states have (on average 2.5) internal successors, (20), 9 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:19:11,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:19:11,474 INFO L93 Difference]: Finished difference Result 166 states and 183 transitions. [2023-11-06 22:19:11,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-06 22:19:11,475 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.5) internal successors, (20), 9 states have internal predecessors, (20), 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 20 [2023-11-06 22:19:11,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:19:11,477 INFO L225 Difference]: With dead ends: 166 [2023-11-06 22:19:11,477 INFO L226 Difference]: Without dead ends: 166 [2023-11-06 22:19:11,477 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=129, Invalid=333, Unknown=0, NotChecked=0, Total=462 [2023-11-06 22:19:11,478 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 215 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 558 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 316 SdHoareTripleChecker+Invalid, 582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 558 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-06 22:19:11,478 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 316 Invalid, 582 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 558 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-06 22:19:11,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2023-11-06 22:19:11,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 155. [2023-11-06 22:19:11,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 119 states have (on average 1.3949579831932772) internal successors, (166), 153 states have internal predecessors, (166), 6 states have call successors, (6), 1 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:19:11,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 172 transitions. [2023-11-06 22:19:11,484 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 172 transitions. Word has length 20 [2023-11-06 22:19:11,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:19:11,484 INFO L495 AbstractCegarLoop]: Abstraction has 155 states and 172 transitions. [2023-11-06 22:19:11,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.5) internal successors, (20), 9 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:19:11,485 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 172 transitions. [2023-11-06 22:19:11,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-11-06 22:19:11,486 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:19:11,486 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:19:11,498 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e384acfc-065f-480f-8e9b-ed6749a2706a/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2023-11-06 22:19:11,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e384acfc-065f-480f-8e9b-ed6749a2706a/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:19:11,694 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr44REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2023-11-06 22:19:11,694 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:19:11,694 INFO L85 PathProgramCache]: Analyzing trace with hash 726822264, now seen corresponding path program 1 times [2023-11-06 22:19:11,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:19:11,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1945196634] [2023-11-06 22:19:11,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:19:11,695 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:19:11,695 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e384acfc-065f-480f-8e9b-ed6749a2706a/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:19:11,696 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e384acfc-065f-480f-8e9b-ed6749a2706a/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:19:11,697 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e384acfc-065f-480f-8e9b-ed6749a2706a/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-11-06 22:19:11,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:19:11,841 INFO L262 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-06 22:19:11,844 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:19:11,877 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-06 22:19:11,884 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-06 22:19:11,926 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-11-06 22:19:11,939 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-11-06 22:19:12,007 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:19:12,008 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 21 [2023-11-06 22:19:12,029 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2023-11-06 22:19:12,434 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2023-11-06 22:19:12,513 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:19:12,513 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:19:12,760 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:19:12,760 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:19:12,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1945196634] [2023-11-06 22:19:12,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1945196634] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:19:12,761 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:19:12,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6] total 13 [2023-11-06 22:19:12,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437434418] [2023-11-06 22:19:12,761 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:19:12,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-06 22:19:12,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:19:12,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-06 22:19:12,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2023-11-06 22:19:12,763 INFO L87 Difference]: Start difference. First operand 155 states and 172 transitions. Second operand has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 13 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:19:14,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:19:14,191 INFO L93 Difference]: Finished difference Result 204 states and 227 transitions. [2023-11-06 22:19:14,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-06 22:19:14,192 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 13 states have internal predecessors, (48), 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 25 [2023-11-06 22:19:14,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:19:14,193 INFO L225 Difference]: With dead ends: 204 [2023-11-06 22:19:14,194 INFO L226 Difference]: Without dead ends: 204 [2023-11-06 22:19:14,194 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=90, Invalid=252, Unknown=0, NotChecked=0, Total=342 [2023-11-06 22:19:14,195 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 537 mSDsluCounter, 259 mSDsCounter, 0 mSdLazyCounter, 339 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 537 SdHoareTripleChecker+Valid, 338 SdHoareTripleChecker+Invalid, 359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:19:14,195 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [537 Valid, 338 Invalid, 359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 339 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-06 22:19:14,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2023-11-06 22:19:14,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 162. [2023-11-06 22:19:14,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 126 states have (on average 1.380952380952381) internal successors, (174), 160 states have internal predecessors, (174), 6 states have call successors, (6), 1 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:19:14,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 180 transitions. [2023-11-06 22:19:14,202 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 180 transitions. Word has length 25 [2023-11-06 22:19:14,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:19:14,202 INFO L495 AbstractCegarLoop]: Abstraction has 162 states and 180 transitions. [2023-11-06 22:19:14,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 13 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:19:14,202 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 180 transitions. [2023-11-06 22:19:14,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-06 22:19:14,204 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:19:14,204 INFO L195 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] [2023-11-06 22:19:14,218 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e384acfc-065f-480f-8e9b-ed6749a2706a/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2023-11-06 22:19:14,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e384acfc-065f-480f-8e9b-ed6749a2706a/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:19:14,416 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2023-11-06 22:19:14,417 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:19:14,417 INFO L85 PathProgramCache]: Analyzing trace with hash 966761239, now seen corresponding path program 1 times [2023-11-06 22:19:14,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:19:14,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1557052420] [2023-11-06 22:19:14,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:19:14,418 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:19:14,418 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e384acfc-065f-480f-8e9b-ed6749a2706a/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:19:14,420 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e384acfc-065f-480f-8e9b-ed6749a2706a/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:19:14,421 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e384acfc-065f-480f-8e9b-ed6749a2706a/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-11-06 22:19:14,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:19:14,550 INFO L262 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-06 22:19:14,552 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:19:14,570 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-06 22:19:14,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:19:14,673 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:19:14,673 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:19:14,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1557052420] [2023-11-06 22:19:14,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1557052420] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:19:14,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:19:14,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 22:19:14,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170432846] [2023-11-06 22:19:14,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:19:14,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:19:14,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:19:14,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:19:14,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:19:14,675 INFO L87 Difference]: Start difference. First operand 162 states and 180 transitions. Second operand has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:19:15,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:19:15,290 INFO L93 Difference]: Finished difference Result 185 states and 203 transitions. [2023-11-06 22:19:15,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:19:15,291 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2023-11-06 22:19:15,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:19:15,292 INFO L225 Difference]: With dead ends: 185 [2023-11-06 22:19:15,292 INFO L226 Difference]: Without dead ends: 185 [2023-11-06 22:19:15,293 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:19:15,293 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 168 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 346 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-06 22:19:15,294 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 346 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-06 22:19:15,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2023-11-06 22:19:15,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 162. [2023-11-06 22:19:15,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 126 states have (on average 1.373015873015873) internal successors, (173), 160 states have internal predecessors, (173), 6 states have call successors, (6), 1 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:19:15,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 179 transitions. [2023-11-06 22:19:15,299 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 179 transitions. Word has length 27 [2023-11-06 22:19:15,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:19:15,300 INFO L495 AbstractCegarLoop]: Abstraction has 162 states and 179 transitions. [2023-11-06 22:19:15,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:19:15,300 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 179 transitions. [2023-11-06 22:19:15,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-11-06 22:19:15,301 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:19:15,301 INFO L195 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] [2023-11-06 22:19:15,318 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e384acfc-065f-480f-8e9b-ed6749a2706a/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Ended with exit code 0 [2023-11-06 22:19:15,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e384acfc-065f-480f-8e9b-ed6749a2706a/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:19:15,512 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2023-11-06 22:19:15,513 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:19:15,513 INFO L85 PathProgramCache]: Analyzing trace with hash 53235318, now seen corresponding path program 1 times [2023-11-06 22:19:15,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:19:15,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1508822022] [2023-11-06 22:19:15,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:19:15,513 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:19:15,514 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e384acfc-065f-480f-8e9b-ed6749a2706a/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:19:15,517 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e384acfc-065f-480f-8e9b-ed6749a2706a/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:19:15,530 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e384acfc-065f-480f-8e9b-ed6749a2706a/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2023-11-06 22:19:15,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:19:15,712 INFO L262 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:19:15,721 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:19:15,727 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-06 22:19:15,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:19:15,764 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:19:15,765 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:19:15,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1508822022] [2023-11-06 22:19:15,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1508822022] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:19:15,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:19:15,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:19:15,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488367088] [2023-11-06 22:19:15,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:19:15,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:19:15,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:19:15,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:19:15,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:19:15,767 INFO L87 Difference]: Start difference. First operand 162 states and 179 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:19:16,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:19:16,152 INFO L93 Difference]: Finished difference Result 165 states and 180 transitions. [2023-11-06 22:19:16,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:19:16,153 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2023-11-06 22:19:16,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:19:16,155 INFO L225 Difference]: With dead ends: 165 [2023-11-06 22:19:16,155 INFO L226 Difference]: Without dead ends: 165 [2023-11-06 22:19:16,155 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:19:16,156 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 19 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 294 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-06 22:19:16,156 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 294 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-06 22:19:16,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2023-11-06 22:19:16,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 161. [2023-11-06 22:19:16,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 126 states have (on average 1.3571428571428572) internal successors, (171), 159 states have internal predecessors, (171), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:19:16,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 176 transitions. [2023-11-06 22:19:16,167 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 176 transitions. Word has length 28 [2023-11-06 22:19:16,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:19:16,168 INFO L495 AbstractCegarLoop]: Abstraction has 161 states and 176 transitions. [2023-11-06 22:19:16,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:19:16,168 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 176 transitions. [2023-11-06 22:19:16,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-11-06 22:19:16,175 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:19:16,175 INFO L195 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] [2023-11-06 22:19:16,191 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e384acfc-065f-480f-8e9b-ed6749a2706a/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2023-11-06 22:19:16,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e384acfc-065f-480f-8e9b-ed6749a2706a/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:19:16,386 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2023-11-06 22:19:16,386 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:19:16,387 INFO L85 PathProgramCache]: Analyzing trace with hash 314752878, now seen corresponding path program 1 times [2023-11-06 22:19:16,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:19:16,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1400888006] [2023-11-06 22:19:16,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:19:16,388 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:19:16,388 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e384acfc-065f-480f-8e9b-ed6749a2706a/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:19:16,389 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e384acfc-065f-480f-8e9b-ed6749a2706a/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:19:16,396 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e384acfc-065f-480f-8e9b-ed6749a2706a/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2023-11-06 22:19:16,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:19:16,628 INFO L262 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-06 22:19:16,630 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:19:16,636 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-06 22:19:16,650 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-06 22:19:16,666 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-11-06 22:19:16,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:19:16,678 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:19:16,678 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:19:16,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1400888006] [2023-11-06 22:19:16,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1400888006] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:19:16,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:19:16,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:19:16,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524403339] [2023-11-06 22:19:16,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:19:16,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:19:16,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:19:16,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:19:16,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:19:16,681 INFO L87 Difference]: Start difference. First operand 161 states and 176 transitions. Second operand has 5 states, 4 states have (on average 7.0) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:19:17,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:19:17,285 INFO L93 Difference]: Finished difference Result 160 states and 175 transitions. [2023-11-06 22:19:17,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:19:17,286 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.0) internal successors, (28), 5 states have internal predecessors, (28), 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 28 [2023-11-06 22:19:17,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:19:17,287 INFO L225 Difference]: With dead ends: 160 [2023-11-06 22:19:17,287 INFO L226 Difference]: Without dead ends: 160 [2023-11-06 22:19:17,287 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:19:17,288 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 7 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 325 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-06 22:19:17,288 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 325 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-06 22:19:17,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2023-11-06 22:19:17,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2023-11-06 22:19:17,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 126 states have (on average 1.3492063492063493) internal successors, (170), 158 states have internal predecessors, (170), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:19:17,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 175 transitions. [2023-11-06 22:19:17,295 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 175 transitions. Word has length 28 [2023-11-06 22:19:17,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:19:17,296 INFO L495 AbstractCegarLoop]: Abstraction has 160 states and 175 transitions. [2023-11-06 22:19:17,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 7.0) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:19:17,296 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 175 transitions. [2023-11-06 22:19:17,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-11-06 22:19:17,297 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:19:17,297 INFO L195 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] [2023-11-06 22:19:17,319 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e384acfc-065f-480f-8e9b-ed6749a2706a/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2023-11-06 22:19:17,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e384acfc-065f-480f-8e9b-ed6749a2706a/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:19:17,517 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2023-11-06 22:19:17,518 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:19:17,518 INFO L85 PathProgramCache]: Analyzing trace with hash 314752879, now seen corresponding path program 1 times [2023-11-06 22:19:17,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:19:17,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2056851054] [2023-11-06 22:19:17,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:19:17,518 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:19:17,518 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e384acfc-065f-480f-8e9b-ed6749a2706a/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:19:17,519 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e384acfc-065f-480f-8e9b-ed6749a2706a/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:19:17,520 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e384acfc-065f-480f-8e9b-ed6749a2706a/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2023-11-06 22:19:17,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:19:17,718 INFO L262 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-06 22:19:17,720 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:19:17,730 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-06 22:19:17,753 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-06 22:19:17,766 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-06 22:19:17,799 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-11-06 22:19:17,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:19:17,818 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:19:17,818 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:19:17,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2056851054] [2023-11-06 22:19:17,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2056851054] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:19:17,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:19:17,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:19:17,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076720527] [2023-11-06 22:19:17,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:19:17,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:19:17,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:19:17,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:19:17,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:19:17,821 INFO L87 Difference]: Start difference. First operand 160 states and 175 transitions. Second operand has 5 states, 4 states have (on average 7.0) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:19:18,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:19:18,549 INFO L93 Difference]: Finished difference Result 159 states and 174 transitions. [2023-11-06 22:19:18,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:19:18,550 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.0) internal successors, (28), 5 states have internal predecessors, (28), 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 28 [2023-11-06 22:19:18,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:19:18,551 INFO L225 Difference]: With dead ends: 159 [2023-11-06 22:19:18,551 INFO L226 Difference]: Without dead ends: 159 [2023-11-06 22:19:18,551 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:19:18,552 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 3 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 315 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-06 22:19:18,552 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 315 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-06 22:19:18,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2023-11-06 22:19:18,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2023-11-06 22:19:18,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 126 states have (on average 1.3412698412698412) internal successors, (169), 157 states have internal predecessors, (169), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:19:18,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 174 transitions. [2023-11-06 22:19:18,557 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 174 transitions. Word has length 28 [2023-11-06 22:19:18,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:19:18,557 INFO L495 AbstractCegarLoop]: Abstraction has 159 states and 174 transitions. [2023-11-06 22:19:18,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 7.0) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:19:18,558 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 174 transitions. [2023-11-06 22:19:18,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-11-06 22:19:18,558 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:19:18,558 INFO L195 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] [2023-11-06 22:19:18,571 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e384acfc-065f-480f-8e9b-ed6749a2706a/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Ended with exit code 0 [2023-11-06 22:19:18,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e384acfc-065f-480f-8e9b-ed6749a2706a/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:19:18,771 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2023-11-06 22:19:18,772 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:19:18,772 INFO L85 PathProgramCache]: Analyzing trace with hash -1120386731, now seen corresponding path program 1 times [2023-11-06 22:19:18,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:19:18,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [773111437] [2023-11-06 22:19:18,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:19:18,772 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:19:18,772 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e384acfc-065f-480f-8e9b-ed6749a2706a/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:19:18,773 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e384acfc-065f-480f-8e9b-ed6749a2706a/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:19:18,789 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e384acfc-065f-480f-8e9b-ed6749a2706a/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2023-11-06 22:19:19,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:19:19,018 INFO L262 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-06 22:19:19,020 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:19:19,056 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-06 22:19:19,064 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-06 22:19:19,114 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2023-11-06 22:19:19,121 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2023-11-06 22:19:19,173 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-06 22:19:19,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:19:19,194 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:19:19,194 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:19:19,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [773111437] [2023-11-06 22:19:19,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [773111437] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:19:19,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:19:19,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:19:19,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600849314] [2023-11-06 22:19:19,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:19:19,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:19:19,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:19:19,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:19:19,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:19:19,196 INFO L87 Difference]: Start difference. First operand 159 states and 174 transitions. Second operand has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:19:19,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:19:19,696 INFO L93 Difference]: Finished difference Result 159 states and 172 transitions. [2023-11-06 22:19:19,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:19:19,696 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2023-11-06 22:19:19,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:19:19,698 INFO L225 Difference]: With dead ends: 159 [2023-11-06 22:19:19,698 INFO L226 Difference]: Without dead ends: 159 [2023-11-06 22:19:19,698 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:19:19,698 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 104 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-06 22:19:19,699 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 234 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-06 22:19:19,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2023-11-06 22:19:19,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 158. [2023-11-06 22:19:19,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 126 states have (on average 1.3253968253968254) internal successors, (167), 156 states have internal predecessors, (167), 4 states have call successors, (4), 1 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:19:19,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 171 transitions. [2023-11-06 22:19:19,704 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 171 transitions. Word has length 31 [2023-11-06 22:19:19,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:19:19,704 INFO L495 AbstractCegarLoop]: Abstraction has 158 states and 171 transitions. [2023-11-06 22:19:19,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:19:19,704 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 171 transitions. [2023-11-06 22:19:19,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-11-06 22:19:19,705 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:19:19,705 INFO L195 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] [2023-11-06 22:19:19,718 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e384acfc-065f-480f-8e9b-ed6749a2706a/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2023-11-06 22:19:19,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e384acfc-065f-480f-8e9b-ed6749a2706a/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:19:19,918 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr57ASSERT_VIOLATIONMEMORY_FREE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2023-11-06 22:19:19,918 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:19:19,918 INFO L85 PathProgramCache]: Analyzing trace with hash -73432733, now seen corresponding path program 1 times [2023-11-06 22:19:19,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:19:19,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [841254202] [2023-11-06 22:19:19,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:19:19,919 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:19:19,920 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e384acfc-065f-480f-8e9b-ed6749a2706a/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:19:19,921 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e384acfc-065f-480f-8e9b-ed6749a2706a/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:19:19,930 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e384acfc-065f-480f-8e9b-ed6749a2706a/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2023-11-06 22:19:20,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:19:20,079 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-06 22:19:20,081 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:19:20,085 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-06 22:19:20,157 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:19:20,157 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:19:20,157 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:19:20,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [841254202] [2023-11-06 22:19:20,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [841254202] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:19:20,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:19:20,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:19:20,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341843463] [2023-11-06 22:19:20,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:19:20,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:19:20,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:19:20,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:19:20,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:19:20,159 INFO L87 Difference]: Start difference. First operand 158 states and 171 transitions. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:19:20,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:19:20,427 INFO L93 Difference]: Finished difference Result 168 states and 181 transitions. [2023-11-06 22:19:20,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:19:20,428 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 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 31 [2023-11-06 22:19:20,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:19:20,430 INFO L225 Difference]: With dead ends: 168 [2023-11-06 22:19:20,430 INFO L226 Difference]: Without dead ends: 168 [2023-11-06 22:19:20,430 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:19:20,431 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 8 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 294 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-06 22:19:20,431 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 294 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-06 22:19:20,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2023-11-06 22:19:20,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 161. [2023-11-06 22:19:20,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 129 states have (on average 1.317829457364341) internal successors, (170), 159 states have internal predecessors, (170), 4 states have call successors, (4), 1 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:19:20,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 174 transitions. [2023-11-06 22:19:20,436 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 174 transitions. Word has length 31 [2023-11-06 22:19:20,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:19:20,437 INFO L495 AbstractCegarLoop]: Abstraction has 161 states and 174 transitions. [2023-11-06 22:19:20,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:19:20,437 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 174 transitions. [2023-11-06 22:19:20,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-11-06 22:19:20,437 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:19:20,438 INFO L195 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] [2023-11-06 22:19:20,450 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e384acfc-065f-480f-8e9b-ed6749a2706a/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2023-11-06 22:19:20,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e384acfc-065f-480f-8e9b-ed6749a2706a/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:19:20,650 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr67ASSERT_VIOLATIONMEMORY_FREE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2023-11-06 22:19:20,651 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:19:20,651 INFO L85 PathProgramCache]: Analyzing trace with hash -52438023, now seen corresponding path program 1 times [2023-11-06 22:19:20,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:19:20,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [708744870] [2023-11-06 22:19:20,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:19:20,651 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:19:20,651 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e384acfc-065f-480f-8e9b-ed6749a2706a/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:19:20,652 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e384acfc-065f-480f-8e9b-ed6749a2706a/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:19:20,654 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e384acfc-065f-480f-8e9b-ed6749a2706a/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2023-11-06 22:19:20,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:19:20,797 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-06 22:19:20,798 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:19:20,870 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:19:20,870 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:19:20,870 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:19:20,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [708744870] [2023-11-06 22:19:20,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [708744870] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:19:20,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:19:20,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:19:20,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930085410] [2023-11-06 22:19:20,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:19:20,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:19:20,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:19:20,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:19:20,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:19:20,872 INFO L87 Difference]: Start difference. First operand 161 states and 174 transitions. Second operand has 3 states, 2 states have (on average 15.5) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:19:21,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:19:21,016 INFO L93 Difference]: Finished difference Result 163 states and 176 transitions. [2023-11-06 22:19:21,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:19:21,017 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 15.5) internal successors, (31), 3 states have internal predecessors, (31), 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 31 [2023-11-06 22:19:21,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:19:21,018 INFO L225 Difference]: With dead ends: 163 [2023-11-06 22:19:21,018 INFO L226 Difference]: Without dead ends: 163 [2023-11-06 22:19:21,018 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:19:21,019 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 67 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:19:21,019 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 130 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:19:21,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2023-11-06 22:19:21,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2023-11-06 22:19:21,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 131 states have (on average 1.3129770992366412) internal successors, (172), 161 states have internal predecessors, (172), 4 states have call successors, (4), 1 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:19:21,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 176 transitions. [2023-11-06 22:19:21,025 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 176 transitions. Word has length 31 [2023-11-06 22:19:21,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:19:21,026 INFO L495 AbstractCegarLoop]: Abstraction has 163 states and 176 transitions. [2023-11-06 22:19:21,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 15.5) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:19:21,026 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 176 transitions. [2023-11-06 22:19:21,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-11-06 22:19:21,027 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:19:21,027 INFO L195 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] [2023-11-06 22:19:21,043 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e384acfc-065f-480f-8e9b-ed6749a2706a/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2023-11-06 22:19:21,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e384acfc-065f-480f-8e9b-ed6749a2706a/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:19:21,239 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr34REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2023-11-06 22:19:21,240 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:19:21,240 INFO L85 PathProgramCache]: Analyzing trace with hash 1802650096, now seen corresponding path program 1 times [2023-11-06 22:19:21,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:19:21,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1682634073] [2023-11-06 22:19:21,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:19:21,240 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:19:21,241 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e384acfc-065f-480f-8e9b-ed6749a2706a/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:19:21,242 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e384acfc-065f-480f-8e9b-ed6749a2706a/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:19:21,243 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e384acfc-065f-480f-8e9b-ed6749a2706a/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2023-11-06 22:19:21,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:19:21,546 INFO L262 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-06 22:19:21,548 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:19:21,589 INFO L322 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-11-06 22:19:21,590 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2023-11-06 22:19:21,639 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-06 22:19:21,766 INFO L322 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-06 22:19:21,766 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 35 [2023-11-06 22:19:21,803 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2023-11-06 22:19:21,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:19:21,889 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:19:21,889 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:19:21,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1682634073] [2023-11-06 22:19:21,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1682634073] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:19:21,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:19:21,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:19:21,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80075575] [2023-11-06 22:19:21,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:19:21,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 22:19:21,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:19:21,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 22:19:21,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:19:21,891 INFO L87 Difference]: Start difference. First operand 163 states and 176 transitions. Second operand has 8 states, 7 states have (on average 4.571428571428571) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:19:23,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:19:23,359 INFO L93 Difference]: Finished difference Result 171 states and 184 transitions. [2023-11-06 22:19:23,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 22:19:23,360 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.571428571428571) internal successors, (32), 8 states have internal predecessors, (32), 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 32 [2023-11-06 22:19:23,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:19:23,361 INFO L225 Difference]: With dead ends: 171 [2023-11-06 22:19:23,362 INFO L226 Difference]: Without dead ends: 171 [2023-11-06 22:19:23,362 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-11-06 22:19:23,363 INFO L413 NwaCegarLoop]: 103 mSDtfsCounter, 67 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 422 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 363 SdHoareTripleChecker+Invalid, 430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-06 22:19:23,364 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 363 Invalid, 430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 422 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-06 22:19:23,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2023-11-06 22:19:23,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 162. [2023-11-06 22:19:23,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 131 states have (on average 1.3053435114503817) internal successors, (171), 160 states have internal predecessors, (171), 4 states have call successors, (4), 1 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:19:23,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 175 transitions. [2023-11-06 22:19:23,370 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 175 transitions. Word has length 32 [2023-11-06 22:19:23,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:19:23,371 INFO L495 AbstractCegarLoop]: Abstraction has 162 states and 175 transitions. [2023-11-06 22:19:23,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.571428571428571) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:19:23,371 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 175 transitions. [2023-11-06 22:19:23,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-11-06 22:19:23,372 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:19:23,372 INFO L195 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] [2023-11-06 22:19:23,388 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e384acfc-065f-480f-8e9b-ed6749a2706a/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2023-11-06 22:19:23,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e384acfc-065f-480f-8e9b-ed6749a2706a/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:19:23,586 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr35REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2023-11-06 22:19:23,586 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:19:23,586 INFO L85 PathProgramCache]: Analyzing trace with hash 1802650097, now seen corresponding path program 1 times [2023-11-06 22:19:23,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:19:23,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1853304788] [2023-11-06 22:19:23,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:19:23,587 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:19:23,587 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e384acfc-065f-480f-8e9b-ed6749a2706a/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:19:23,588 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e384acfc-065f-480f-8e9b-ed6749a2706a/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:19:23,590 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e384acfc-065f-480f-8e9b-ed6749a2706a/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2023-11-06 22:19:23,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:19:23,942 INFO L262 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-06 22:19:23,945 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:19:23,991 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-06 22:19:24,009 INFO L322 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-06 22:19:24,010 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-11-06 22:19:24,053 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-06 22:19:24,059 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-06 22:19:24,180 INFO L322 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-06 22:19:24,181 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 45 [2023-11-06 22:19:24,193 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 11 [2023-11-06 22:19:24,225 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-11-06 22:19:24,234 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-11-06 22:19:24,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:19:24,293 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:19:24,293 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:19:24,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1853304788] [2023-11-06 22:19:24,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1853304788] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:19:24,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:19:24,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:19:24,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727814031] [2023-11-06 22:19:24,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:19:24,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 22:19:24,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:19:24,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 22:19:24,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:19:24,296 INFO L87 Difference]: Start difference. First operand 162 states and 175 transitions. Second operand has 8 states, 7 states have (on average 4.571428571428571) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:19:26,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:19:26,029 INFO L93 Difference]: Finished difference Result 159 states and 172 transitions. [2023-11-06 22:19:26,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-06 22:19:26,030 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.571428571428571) internal successors, (32), 8 states have internal predecessors, (32), 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 32 [2023-11-06 22:19:26,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:19:26,031 INFO L225 Difference]: With dead ends: 159 [2023-11-06 22:19:26,031 INFO L226 Difference]: Without dead ends: 159 [2023-11-06 22:19:26,032 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2023-11-06 22:19:26,033 INFO L413 NwaCegarLoop]: 103 mSDtfsCounter, 67 mSDsluCounter, 322 mSDsCounter, 0 mSdLazyCounter, 450 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 425 SdHoareTripleChecker+Invalid, 467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-06 22:19:26,033 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 425 Invalid, 467 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 450 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-06 22:19:26,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2023-11-06 22:19:26,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 139. [2023-11-06 22:19:26,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 115 states have (on average 1.2695652173913043) internal successors, (146), 137 states have internal predecessors, (146), 4 states have call successors, (4), 1 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:19:26,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 150 transitions. [2023-11-06 22:19:26,039 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 150 transitions. Word has length 32 [2023-11-06 22:19:26,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:19:26,039 INFO L495 AbstractCegarLoop]: Abstraction has 139 states and 150 transitions. [2023-11-06 22:19:26,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.571428571428571) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:19:26,040 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 150 transitions. [2023-11-06 22:19:26,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-11-06 22:19:26,041 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:19:26,041 INFO L195 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] [2023-11-06 22:19:26,057 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e384acfc-065f-480f-8e9b-ed6749a2706a/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2023-11-06 22:19:26,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e384acfc-065f-480f-8e9b-ed6749a2706a/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:19:26,256 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2023-11-06 22:19:26,257 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:19:26,257 INFO L85 PathProgramCache]: Analyzing trace with hash 1291284650, now seen corresponding path program 1 times [2023-11-06 22:19:26,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:19:26,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1782033198] [2023-11-06 22:19:26,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:19:26,257 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:19:26,257 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e384acfc-065f-480f-8e9b-ed6749a2706a/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:19:26,258 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e384acfc-065f-480f-8e9b-ed6749a2706a/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:19:26,261 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e384acfc-065f-480f-8e9b-ed6749a2706a/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2023-11-06 22:19:26,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:19:26,546 INFO L262 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-06 22:19:26,548 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:19:26,551 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-06 22:19:26,589 INFO L322 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-06 22:19:26,589 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2023-11-06 22:19:26,691 INFO L322 Elim1Store]: treesize reduction 22, result has 29.0 percent of original size [2023-11-06 22:19:26,691 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 20 treesize of output 22 [2023-11-06 22:19:26,726 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-06 22:19:26,819 INFO L322 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-06 22:19:26,820 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 32 [2023-11-06 22:19:26,846 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2023-11-06 22:19:26,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:19:26,906 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:19:26,906 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:19:26,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1782033198] [2023-11-06 22:19:26,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1782033198] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:19:26,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:19:26,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-06 22:19:26,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757184079] [2023-11-06 22:19:26,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:19:26,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-06 22:19:26,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:19:26,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-06 22:19:26,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-11-06 22:19:26,908 INFO L87 Difference]: Start difference. First operand 139 states and 150 transitions. Second operand has 10 states, 10 states have (on average 3.2) internal successors, (32), 10 states have internal predecessors, (32), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:19:28,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:19:28,603 INFO L93 Difference]: Finished difference Result 159 states and 171 transitions. [2023-11-06 22:19:28,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-06 22:19:28,603 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.2) internal successors, (32), 10 states have internal predecessors, (32), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2023-11-06 22:19:28,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:19:28,605 INFO L225 Difference]: With dead ends: 159 [2023-11-06 22:19:28,605 INFO L226 Difference]: Without dead ends: 159 [2023-11-06 22:19:28,605 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=146, Invalid=360, Unknown=0, NotChecked=0, Total=506 [2023-11-06 22:19:28,606 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 166 mSDsluCounter, 331 mSDsCounter, 0 mSdLazyCounter, 488 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 403 SdHoareTripleChecker+Invalid, 502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 488 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:19:28,606 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 403 Invalid, 502 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 488 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-06 22:19:28,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2023-11-06 22:19:28,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 146. [2023-11-06 22:19:28,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 122 states have (on average 1.2540983606557377) internal successors, (153), 144 states have internal predecessors, (153), 4 states have call successors, (4), 1 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:19:28,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 157 transitions. [2023-11-06 22:19:28,612 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 157 transitions. Word has length 33 [2023-11-06 22:19:28,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:19:28,612 INFO L495 AbstractCegarLoop]: Abstraction has 146 states and 157 transitions. [2023-11-06 22:19:28,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.2) internal successors, (32), 10 states have internal predecessors, (32), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:19:28,613 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 157 transitions. [2023-11-06 22:19:28,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-11-06 22:19:28,613 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:19:28,613 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-06 22:19:28,635 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e384acfc-065f-480f-8e9b-ed6749a2706a/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2023-11-06 22:19:28,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e384acfc-065f-480f-8e9b-ed6749a2706a/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:19:28,828 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr52REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2023-11-06 22:19:28,829 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:19:28,829 INFO L85 PathProgramCache]: Analyzing trace with hash 1187283993, now seen corresponding path program 1 times [2023-11-06 22:19:28,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:19:28,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1114620010] [2023-11-06 22:19:28,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:19:28,829 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:19:28,829 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e384acfc-065f-480f-8e9b-ed6749a2706a/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:19:28,830 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e384acfc-065f-480f-8e9b-ed6749a2706a/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:19:28,831 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e384acfc-065f-480f-8e9b-ed6749a2706a/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2023-11-06 22:19:29,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:19:29,016 INFO L262 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-06 22:19:29,018 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:19:29,270 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-06 22:19:29,373 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:19:29,373 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:19:29,640 INFO L322 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2023-11-06 22:19:29,640 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 19 [2023-11-06 22:19:29,660 INFO L322 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2023-11-06 22:19:29,660 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 12 [2023-11-06 22:19:29,731 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:19:29,731 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:19:29,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1114620010] [2023-11-06 22:19:29,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1114620010] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:19:29,731 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:19:29,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 17 [2023-11-06 22:19:29,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344834096] [2023-11-06 22:19:29,732 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:19:29,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-06 22:19:29,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:19:29,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-06 22:19:29,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2023-11-06 22:19:29,733 INFO L87 Difference]: Start difference. First operand 146 states and 157 transitions. Second operand has 17 states, 17 states have (on average 3.8823529411764706) internal successors, (66), 17 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:19:32,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:19:32,339 INFO L93 Difference]: Finished difference Result 198 states and 213 transitions. [2023-11-06 22:19:32,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-06 22:19:32,340 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.8823529411764706) internal successors, (66), 17 states have internal predecessors, (66), 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 34 [2023-11-06 22:19:32,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:19:32,341 INFO L225 Difference]: With dead ends: 198 [2023-11-06 22:19:32,341 INFO L226 Difference]: Without dead ends: 198 [2023-11-06 22:19:32,342 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=107, Invalid=445, Unknown=0, NotChecked=0, Total=552 [2023-11-06 22:19:32,342 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 265 mSDsluCounter, 639 mSDsCounter, 0 mSdLazyCounter, 931 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 265 SdHoareTripleChecker+Valid, 717 SdHoareTripleChecker+Invalid, 955 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 931 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-11-06 22:19:32,343 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [265 Valid, 717 Invalid, 955 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 931 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-11-06 22:19:32,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2023-11-06 22:19:32,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 157. [2023-11-06 22:19:32,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 133 states have (on average 1.2481203007518797) internal successors, (166), 155 states have internal predecessors, (166), 4 states have call successors, (4), 1 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:19:32,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 170 transitions. [2023-11-06 22:19:32,349 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 170 transitions. Word has length 34 [2023-11-06 22:19:32,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:19:32,349 INFO L495 AbstractCegarLoop]: Abstraction has 157 states and 170 transitions. [2023-11-06 22:19:32,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.8823529411764706) internal successors, (66), 17 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:19:32,350 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 170 transitions. [2023-11-06 22:19:32,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-11-06 22:19:32,351 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:19:32,351 INFO L195 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] [2023-11-06 22:19:32,365 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e384acfc-065f-480f-8e9b-ed6749a2706a/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2023-11-06 22:19:32,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e384acfc-065f-480f-8e9b-ed6749a2706a/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:19:32,564 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr69ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2023-11-06 22:19:32,565 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:19:32,565 INFO L85 PathProgramCache]: Analyzing trace with hash -1848902220, now seen corresponding path program 1 times [2023-11-06 22:19:32,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:19:32,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [126075508] [2023-11-06 22:19:32,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:19:32,566 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:19:32,566 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e384acfc-065f-480f-8e9b-ed6749a2706a/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:19:32,567 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e384acfc-065f-480f-8e9b-ed6749a2706a/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:19:32,569 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e384acfc-065f-480f-8e9b-ed6749a2706a/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2023-11-06 22:19:32,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:19:32,773 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:19:32,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:19:32,891 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2023-11-06 22:19:32,891 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-06 22:19:32,892 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr69ASSERT_VIOLATIONMEMORY_LEAK (70 of 71 remaining) [2023-11-06 22:19:32,911 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK (69 of 71 remaining) [2023-11-06 22:19:32,911 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (68 of 71 remaining) [2023-11-06 22:19:32,912 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (67 of 71 remaining) [2023-11-06 22:19:32,912 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (66 of 71 remaining) [2023-11-06 22:19:32,912 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (65 of 71 remaining) [2023-11-06 22:19:32,912 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (64 of 71 remaining) [2023-11-06 22:19:32,912 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (63 of 71 remaining) [2023-11-06 22:19:32,912 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (62 of 71 remaining) [2023-11-06 22:19:32,912 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (61 of 71 remaining) [2023-11-06 22:19:32,913 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (60 of 71 remaining) [2023-11-06 22:19:32,913 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (59 of 71 remaining) [2023-11-06 22:19:32,913 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (58 of 71 remaining) [2023-11-06 22:19:32,913 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (57 of 71 remaining) [2023-11-06 22:19:32,913 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (56 of 71 remaining) [2023-11-06 22:19:32,913 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (55 of 71 remaining) [2023-11-06 22:19:32,913 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (54 of 71 remaining) [2023-11-06 22:19:32,914 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (53 of 71 remaining) [2023-11-06 22:19:32,914 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (52 of 71 remaining) [2023-11-06 22:19:32,914 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (51 of 71 remaining) [2023-11-06 22:19:32,914 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (50 of 71 remaining) [2023-11-06 22:19:32,914 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (49 of 71 remaining) [2023-11-06 22:19:32,914 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (48 of 71 remaining) [2023-11-06 22:19:32,914 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (47 of 71 remaining) [2023-11-06 22:19:32,915 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (46 of 71 remaining) [2023-11-06 22:19:32,915 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (45 of 71 remaining) [2023-11-06 22:19:32,915 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (44 of 71 remaining) [2023-11-06 22:19:32,915 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (43 of 71 remaining) [2023-11-06 22:19:32,915 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (42 of 71 remaining) [2023-11-06 22:19:32,915 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (41 of 71 remaining) [2023-11-06 22:19:32,915 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE (40 of 71 remaining) [2023-11-06 22:19:32,916 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE (39 of 71 remaining) [2023-11-06 22:19:32,916 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE (38 of 71 remaining) [2023-11-06 22:19:32,916 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 71 remaining) [2023-11-06 22:19:32,916 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr32REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 71 remaining) [2023-11-06 22:19:32,916 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr33REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 71 remaining) [2023-11-06 22:19:32,916 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr34REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 71 remaining) [2023-11-06 22:19:32,916 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr35REQUIRES_VIOLATIONMEMORY_DEREFERENCE (33 of 71 remaining) [2023-11-06 22:19:32,916 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr36REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 71 remaining) [2023-11-06 22:19:32,917 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr37REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 71 remaining) [2023-11-06 22:19:32,917 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr38REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 71 remaining) [2023-11-06 22:19:32,917 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr39REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 71 remaining) [2023-11-06 22:19:32,917 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr40REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 71 remaining) [2023-11-06 22:19:32,917 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr41REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 71 remaining) [2023-11-06 22:19:32,917 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr42REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 71 remaining) [2023-11-06 22:19:32,924 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr43REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 71 remaining) [2023-11-06 22:19:32,924 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr44REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 71 remaining) [2023-11-06 22:19:32,924 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr45REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 71 remaining) [2023-11-06 22:19:32,925 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr46REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 71 remaining) [2023-11-06 22:19:32,925 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr47REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 71 remaining) [2023-11-06 22:19:32,925 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr48REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 71 remaining) [2023-11-06 22:19:32,925 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr49REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 71 remaining) [2023-11-06 22:19:32,925 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr50REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 71 remaining) [2023-11-06 22:19:32,926 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr51REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 71 remaining) [2023-11-06 22:19:32,926 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr52REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 71 remaining) [2023-11-06 22:19:32,926 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr53REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 71 remaining) [2023-11-06 22:19:32,926 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr54REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 71 remaining) [2023-11-06 22:19:32,926 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr55REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 71 remaining) [2023-11-06 22:19:32,927 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr56ASSERT_VIOLATIONMEMORY_FREE (12 of 71 remaining) [2023-11-06 22:19:32,930 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr57ASSERT_VIOLATIONMEMORY_FREE (11 of 71 remaining) [2023-11-06 22:19:32,930 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr58ASSERT_VIOLATIONMEMORY_FREE (10 of 71 remaining) [2023-11-06 22:19:32,937 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr59REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 71 remaining) [2023-11-06 22:19:32,937 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr60REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 71 remaining) [2023-11-06 22:19:32,938 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr61ASSERT_VIOLATIONMEMORY_FREE (7 of 71 remaining) [2023-11-06 22:19:32,938 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr62ASSERT_VIOLATIONMEMORY_FREE (6 of 71 remaining) [2023-11-06 22:19:32,938 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr63ASSERT_VIOLATIONMEMORY_FREE (5 of 71 remaining) [2023-11-06 22:19:32,938 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr64REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 71 remaining) [2023-11-06 22:19:32,938 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr65REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 71 remaining) [2023-11-06 22:19:32,939 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr66ASSERT_VIOLATIONMEMORY_FREE (2 of 71 remaining) [2023-11-06 22:19:32,939 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr67ASSERT_VIOLATIONMEMORY_FREE (1 of 71 remaining) [2023-11-06 22:19:32,939 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr68ASSERT_VIOLATIONMEMORY_FREE (0 of 71 remaining) [2023-11-06 22:19:32,985 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e384acfc-065f-480f-8e9b-ed6749a2706a/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2023-11-06 22:19:33,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e384acfc-065f-480f-8e9b-ed6749a2706a/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:19:33,143 INFO L445 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, 1, 1] [2023-11-06 22:19:33,149 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-06 22:19:33,210 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 10:19:33 BoogieIcfgContainer [2023-11-06 22:19:33,212 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-06 22:19:33,212 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-06 22:19:33,212 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-06 22:19:33,213 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-06 22:19:33,213 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:18:56" (3/4) ... [2023-11-06 22:19:33,215 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-06 22:19:33,217 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-06 22:19:33,217 INFO L158 Benchmark]: Toolchain (without parser) took 38493.36ms. Allocated memory was 75.5MB in the beginning and 119.5MB in the end (delta: 44.0MB). Free memory was 45.9MB in the beginning and 86.3MB in the end (delta: -40.5MB). Peak memory consumption was 2.7MB. Max. memory is 16.1GB. [2023-11-06 22:19:33,218 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 75.5MB. Free memory is still 51.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 22:19:33,218 INFO L158 Benchmark]: CACSL2BoogieTranslator took 700.18ms. Allocated memory is still 75.5MB. Free memory was 45.6MB in the beginning and 47.7MB in the end (delta: -2.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-06 22:19:33,218 INFO L158 Benchmark]: Boogie Procedure Inliner took 63.01ms. Allocated memory is still 75.5MB. Free memory was 47.7MB in the beginning and 45.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 22:19:33,219 INFO L158 Benchmark]: Boogie Preprocessor took 41.88ms. Allocated memory is still 75.5MB. Free memory was 45.6MB in the beginning and 43.2MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 22:19:33,219 INFO L158 Benchmark]: RCFGBuilder took 1297.74ms. Allocated memory was 75.5MB in the beginning and 98.6MB in the end (delta: 23.1MB). Free memory was 43.2MB in the beginning and 54.7MB in the end (delta: -11.5MB). Peak memory consumption was 14.2MB. Max. memory is 16.1GB. [2023-11-06 22:19:33,219 INFO L158 Benchmark]: TraceAbstraction took 36374.35ms. Allocated memory was 98.6MB in the beginning and 119.5MB in the end (delta: 21.0MB). Free memory was 54.3MB in the beginning and 87.2MB in the end (delta: -32.9MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 22:19:33,220 INFO L158 Benchmark]: Witness Printer took 4.57ms. Allocated memory is still 119.5MB. Free memory was 87.2MB in the beginning and 86.3MB in the end (delta: 851.6kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 22:19:33,233 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 75.5MB. Free memory is still 51.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 700.18ms. Allocated memory is still 75.5MB. Free memory was 45.6MB in the beginning and 47.7MB in the end (delta: -2.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 63.01ms. Allocated memory is still 75.5MB. Free memory was 47.7MB in the beginning and 45.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 41.88ms. Allocated memory is still 75.5MB. Free memory was 45.6MB in the beginning and 43.2MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1297.74ms. Allocated memory was 75.5MB in the beginning and 98.6MB in the end (delta: 23.1MB). Free memory was 43.2MB in the beginning and 54.7MB in the end (delta: -11.5MB). Peak memory consumption was 14.2MB. Max. memory is 16.1GB. * TraceAbstraction took 36374.35ms. Allocated memory was 98.6MB in the beginning and 119.5MB in the end (delta: 21.0MB). Free memory was 54.3MB in the beginning and 87.2MB in the end (delta: -32.9MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 4.57ms. Allocated memory is still 119.5MB. Free memory was 87.2MB in the beginning and 86.3MB in the end (delta: 851.6kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 996]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 996. Possible FailurePath: [L998] struct TSLL* null = malloc(sizeof(struct TSLL)); [L999] null->next = ((void*)0) VAL [null={-2147483647:0}] [L1000] null->prev = ((void*)0) VAL [null={-2147483647:0}] [L1001] null->colour = BLACK VAL [null={-2147483647:0}] [L1003] struct TSLL* list = malloc(sizeof(struct TSLL)); [L1004] list->next = null VAL [list={3:0}, null={-2147483647:0}] [L1005] list->prev = null VAL [list={3:0}, null={-2147483647:0}] [L1006] list->colour = BLACK VAL [list={3:0}, null={-2147483647:0}] [L1008] struct TSLL* end = list; VAL [end={3:0}, list={3:0}, null={-2147483647:0}] [L1011] COND FALSE !(__VERIFIER_nondet_int()) [L1037] end = null [L1038] end = list VAL [end={3:0}, list={3:0}, null={-2147483647:0}] [L1041] COND FALSE !(!(null != end)) VAL [end={3:0}, list={3:0}, null={-2147483647:0}] [L1042] EXPR end->colour VAL [end->colour=1, end={3:0}, list={3:0}, null={-2147483647:0}] [L1042] COND FALSE !(!(BLACK == end->colour)) [L1043] COND TRUE null != end VAL [end={3:0}, list={3:0}, null={-2147483647:0}] [L1045] EXPR end->colour VAL [end->colour=1, end={3:0}, list={3:0}, null={-2147483647:0}] [L1045] COND FALSE !(RED == end->colour) [L1052] EXPR end->next VAL [end->next={-2147483647:0}, end={3:0}, list={3:0}, null={-2147483647:0}] [L1052] end = end->next [L1043] COND FALSE !(null != end) VAL [end={-2147483647:0}, list={3:0}, null={-2147483647:0}] [L1056] COND TRUE null != list VAL [end={-2147483647:0}, list={3:0}, null={-2147483647:0}] [L1058] EXPR list->colour VAL [end={-2147483647:0}, list->colour=1, list={3:0}, null={-2147483647:0}] [L1058] COND FALSE !(RED == list->colour) [L1067] EXPR list->next VAL [end={-2147483647:0}, list->next={-2147483647:0}, list={3:0}, null={-2147483647:0}] [L1067] end = list->next [L1068] free(list) VAL [end={-2147483647:0}, list={3:0}, null={-2147483647:0}] [L1068] free(list) VAL [end={-2147483647:0}, list={3:0}, null={-2147483647:0}] [L1068] free(list) [L1069] list = end VAL [end={-2147483647:0}, list={-2147483647:0}, null={-2147483647:0}] [L1056] COND FALSE !(null != list) VAL [end={-2147483647:0}, list={-2147483647:0}, null={-2147483647:0}] [L1073] return 0; VAL [\result=0, end={-2147483647:0}, list={-2147483647:0}, null={-2147483647:0}] - UnprovableResult [Line: 985]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1061]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1061]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1061]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1063]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1063]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1063]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1068]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1068]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1068]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 171 locations, 71 error locations. Started 1 CEGAR loops. OverallTime: 36.2s, OverallIterations: 25, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 21.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3354 SdHoareTripleChecker+Valid, 18.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3354 mSDsluCounter, 6625 SdHoareTripleChecker+Invalid, 15.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4301 mSDsCounter, 218 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5970 IncrementalHoareTripleChecker+Invalid, 6188 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 218 mSolverCounterUnsat, 2324 mSDtfsCounter, 5970 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 623 GetRequests, 449 SyntacticMatches, 2 SemanticMatches, 172 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 305 ImplicationChecksByTransitivity, 3.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=171occurred in iteration=0, InterpolantAutomatonStates: 171, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 24 MinimizatonAttempts, 380 StatesRemovedByMinimization, 18 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 2.1s SatisfiabilityAnalysisTime, 5.0s InterpolantComputationTime, 550 NumberOfCodeBlocks, 550 NumberOfCodeBlocksAsserted, 25 NumberOfCheckSat, 548 ConstructedInterpolants, 4 QuantifiedInterpolants, 3641 SizeOfPredicates, 101 NumberOfNonLiveVariables, 3542 ConjunctsInSsa, 225 ConjunctsInUnsatCore, 26 InterpolantComputations, 22 PerfectInterpolantSequences, 6/12 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-06 22:19:33,275 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e384acfc-065f-480f-8e9b-ed6749a2706a/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample