./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-wmm/thin002_power.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d209443-6e8b-4dcb-9aa7-405c83b74b30/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d209443-6e8b-4dcb-9aa7-405c83b74b30/bin/utaipan-verify-sOmjnqqW8E/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d209443-6e8b-4dcb-9aa7-405c83b74b30/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d209443-6e8b-4dcb-9aa7-405c83b74b30/bin/utaipan-verify-sOmjnqqW8E/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-wmm/thin002_power.oepc.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d209443-6e8b-4dcb-9aa7-405c83b74b30/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d209443-6e8b-4dcb-9aa7-405c83b74b30/bin/utaipan-verify-sOmjnqqW8E --witnessprinter.witness.filename witness --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8cac3035eaeb2816ec7d27d980ff4447cc10ff3a409a1a8662d4bf55d93fe6d5 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-14 05:32:00,357 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-14 05:32:00,451 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d209443-6e8b-4dcb-9aa7-405c83b74b30/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2024-11-14 05:32:00,460 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-14 05:32:00,460 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-14 05:32:00,494 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-14 05:32:00,495 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-14 05:32:00,495 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-14 05:32:00,495 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-14 05:32:00,496 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-14 05:32:00,496 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-14 05:32:00,496 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-14 05:32:00,496 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-14 05:32:00,496 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-14 05:32:00,497 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-14 05:32:00,497 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-14 05:32:00,497 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-14 05:32:00,498 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-14 05:32:00,499 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-14 05:32:00,499 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-14 05:32:00,499 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-14 05:32:00,499 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-14 05:32:00,500 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-14 05:32:00,500 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-14 05:32:00,500 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-14 05:32:00,500 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-14 05:32:00,500 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-14 05:32:00,500 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-14 05:32:00,500 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-14 05:32:00,500 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-14 05:32:00,501 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-14 05:32:00,501 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-14 05:32:00,501 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-14 05:32:00,502 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-14 05:32:00,502 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-14 05:32:00,502 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-14 05:32:00,502 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-14 05:32:00,502 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-14 05:32:00,502 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-14 05:32:00,503 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-14 05:32:00,503 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-14 05:32:00,503 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 05:32:00,503 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-14 05:32:00,504 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-14 05:32:00,504 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-14 05:32:00,504 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-14 05:32:00,504 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-14 05:32:00,504 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-14 05:32:00,504 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-14 05:32:00,504 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d209443-6e8b-4dcb-9aa7-405c83b74b30/bin/utaipan-verify-sOmjnqqW8E Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G 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 -> Taipan 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 -> 8cac3035eaeb2816ec7d27d980ff4447cc10ff3a409a1a8662d4bf55d93fe6d5 [2024-11-14 05:32:00,841 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-14 05:32:00,850 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-14 05:32:00,852 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-14 05:32:00,854 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-14 05:32:00,854 INFO L274 PluginConnector]: CDTParser initialized [2024-11-14 05:32:00,855 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d209443-6e8b-4dcb-9aa7-405c83b74b30/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/pthread-wmm/thin002_power.oepc.i Unable to find full path for "g++" [2024-11-14 05:32:02,780 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-14 05:32:03,300 INFO L384 CDTParser]: Found 1 translation units. [2024-11-14 05:32:03,304 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d209443-6e8b-4dcb-9aa7-405c83b74b30/sv-benchmarks/c/pthread-wmm/thin002_power.oepc.i [2024-11-14 05:32:03,330 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d209443-6e8b-4dcb-9aa7-405c83b74b30/bin/utaipan-verify-sOmjnqqW8E/data/4dcf96b05/8545cb1fa79a436e83592d279dd04a7e/FLAGfdda84106 [2024-11-14 05:32:03,364 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d209443-6e8b-4dcb-9aa7-405c83b74b30/bin/utaipan-verify-sOmjnqqW8E/data/4dcf96b05/8545cb1fa79a436e83592d279dd04a7e [2024-11-14 05:32:03,369 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-14 05:32:03,372 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-14 05:32:03,374 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-14 05:32:03,376 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-14 05:32:03,383 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-14 05:32:03,385 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 05:32:03" (1/1) ... [2024-11-14 05:32:03,386 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2883c547 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:32:03, skipping insertion in model container [2024-11-14 05:32:03,386 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 05:32:03" (1/1) ... [2024-11-14 05:32:03,460 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-14 05:32:04,202 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 05:32:04,218 INFO L200 MainTranslator]: Completed pre-run [2024-11-14 05:32:04,393 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 05:32:04,466 INFO L204 MainTranslator]: Completed translation [2024-11-14 05:32:04,467 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:32:04 WrapperNode [2024-11-14 05:32:04,467 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-14 05:32:04,469 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-14 05:32:04,469 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-14 05:32:04,470 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-14 05:32:04,480 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:32:04" (1/1) ... [2024-11-14 05:32:04,501 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:32:04" (1/1) ... [2024-11-14 05:32:04,534 INFO L138 Inliner]: procedures = 176, calls = 67, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 141 [2024-11-14 05:32:04,534 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-14 05:32:04,535 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-14 05:32:04,535 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-14 05:32:04,536 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-14 05:32:04,546 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:32:04" (1/1) ... [2024-11-14 05:32:04,547 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:32:04" (1/1) ... [2024-11-14 05:32:04,552 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:32:04" (1/1) ... [2024-11-14 05:32:04,552 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:32:04" (1/1) ... [2024-11-14 05:32:04,583 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:32:04" (1/1) ... [2024-11-14 05:32:04,591 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:32:04" (1/1) ... [2024-11-14 05:32:04,600 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:32:04" (1/1) ... [2024-11-14 05:32:04,603 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:32:04" (1/1) ... [2024-11-14 05:32:04,610 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-14 05:32:04,612 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-14 05:32:04,612 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-14 05:32:04,612 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-14 05:32:04,613 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:32:04" (1/1) ... [2024-11-14 05:32:04,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 05:32:04,642 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d209443-6e8b-4dcb-9aa7-405c83b74b30/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:32:04,657 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d209443-6e8b-4dcb-9aa7-405c83b74b30/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-14 05:32:04,661 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d209443-6e8b-4dcb-9aa7-405c83b74b30/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-14 05:32:04,691 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-14 05:32:04,692 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-14 05:32:04,692 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-14 05:32:04,692 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-14 05:32:04,692 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-11-14 05:32:04,692 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-11-14 05:32:04,692 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-11-14 05:32:04,692 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-11-14 05:32:04,693 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-11-14 05:32:04,693 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-11-14 05:32:04,693 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-11-14 05:32:04,693 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-11-14 05:32:04,693 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-14 05:32:04,693 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-14 05:32:04,693 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-14 05:32:04,693 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-14 05:32:04,696 WARN L207 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-14 05:32:04,944 INFO L238 CfgBuilder]: Building ICFG [2024-11-14 05:32:04,948 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-14 05:32:05,671 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-14 05:32:05,671 INFO L287 CfgBuilder]: Performing block encoding [2024-11-14 05:32:06,590 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-14 05:32:06,590 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-14 05:32:06,591 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 05:32:06 BoogieIcfgContainer [2024-11-14 05:32:06,591 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-14 05:32:06,595 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-14 05:32:06,595 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-14 05:32:06,603 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-14 05:32:06,604 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.11 05:32:03" (1/3) ... [2024-11-14 05:32:06,604 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42e7f407 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 05:32:06, skipping insertion in model container [2024-11-14 05:32:06,605 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:32:04" (2/3) ... [2024-11-14 05:32:06,605 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42e7f407 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 05:32:06, skipping insertion in model container [2024-11-14 05:32:06,605 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 05:32:06" (3/3) ... [2024-11-14 05:32:06,607 INFO L112 eAbstractionObserver]: Analyzing ICFG thin002_power.oepc.i [2024-11-14 05:32:06,631 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-14 05:32:06,635 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG thin002_power.oepc.i that has 5 procedures, 79 locations, 1 initial locations, 0 loop locations, and 30 error locations. [2024-11-14 05:32:06,635 INFO L492 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-14 05:32:06,874 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-14 05:32:06,923 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 91 places, 80 transitions, 176 flow [2024-11-14 05:32:21,458 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 309560 states, 308490 states have (on average 4.6480047975623195) internal successors, (1433863), 309559 states have internal predecessors, (1433863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:32:21,519 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-14 05:32:21,538 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=None, 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;@763bdd5d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-14 05:32:21,539 INFO L334 AbstractCegarLoop]: Starting to check reachability of 56 error locations. [2024-11-14 05:32:22,113 INFO L276 IsEmpty]: Start isEmpty. Operand has 309560 states, 308490 states have (on average 4.6480047975623195) internal successors, (1433863), 309559 states have internal predecessors, (1433863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:32:22,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-14 05:32:22,121 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:32:22,122 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-14 05:32:22,123 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2024-11-14 05:32:22,129 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:32:22,129 INFO L85 PathProgramCache]: Analyzing trace with hash 23290014, now seen corresponding path program 1 times [2024-11-14 05:32:22,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:32:22,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214567373] [2024-11-14 05:32:22,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:32:22,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:32:22,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:32:22,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:32:22,903 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:32:22,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214567373] [2024-11-14 05:32:22,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214567373] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:32:22,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:32:22,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-14 05:32:22,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077866592] [2024-11-14 05:32:22,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:32:22,934 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 05:32:22,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:32:22,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 05:32:22,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 05:32:23,654 INFO L87 Difference]: Start difference. First operand has 309560 states, 308490 states have (on average 4.6480047975623195) internal successors, (1433863), 309559 states have internal predecessors, (1433863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:32:31,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:32:31,849 INFO L93 Difference]: Finished difference Result 331757 states and 1564133 transitions. [2024-11-14 05:32:31,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 05:32:31,853 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2024-11-14 05:32:31,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:32:35,043 INFO L225 Difference]: With dead ends: 331757 [2024-11-14 05:32:35,044 INFO L226 Difference]: Without dead ends: 114953 [2024-11-14 05:32:35,488 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 05:32:35,492 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 56 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 05:32:35,493 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 22 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 05:32:35,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114953 states. [2024-11-14 05:32:41,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114953 to 114953. [2024-11-14 05:32:41,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114953 states, 114765 states have (on average 4.4729839236701086) internal successors, (513342), 114952 states have internal predecessors, (513342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:32:43,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114953 states to 114953 states and 513342 transitions. [2024-11-14 05:32:43,675 INFO L78 Accepts]: Start accepts. Automaton has 114953 states and 513342 transitions. Word has length 4 [2024-11-14 05:32:43,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:32:43,676 INFO L471 AbstractCegarLoop]: Abstraction has 114953 states and 513342 transitions. [2024-11-14 05:32:43,677 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:32:43,677 INFO L276 IsEmpty]: Start isEmpty. Operand 114953 states and 513342 transitions. [2024-11-14 05:32:43,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-14 05:32:43,678 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:32:43,678 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-14 05:32:43,678 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-14 05:32:43,679 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2024-11-14 05:32:43,680 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:32:43,680 INFO L85 PathProgramCache]: Analyzing trace with hash 23290003, now seen corresponding path program 1 times [2024-11-14 05:32:43,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:32:43,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156182197] [2024-11-14 05:32:43,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:32:43,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:32:43,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:32:43,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:32:43,848 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:32:43,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156182197] [2024-11-14 05:32:43,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156182197] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:32:43,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:32:43,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-14 05:32:43,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357951323] [2024-11-14 05:32:43,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:32:43,851 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 05:32:43,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:32:43,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 05:32:43,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 05:32:43,852 INFO L87 Difference]: Start difference. First operand 114953 states and 513342 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:32:46,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:32:46,983 INFO L93 Difference]: Finished difference Result 114953 states and 513342 transitions. [2024-11-14 05:32:46,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 05:32:46,985 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2024-11-14 05:32:46,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:32:48,092 INFO L225 Difference]: With dead ends: 114953 [2024-11-14 05:32:48,092 INFO L226 Difference]: Without dead ends: 70739 [2024-11-14 05:32:48,221 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 05:32:48,226 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 50 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 05:32:48,226 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 21 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 05:32:48,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70739 states. [2024-11-14 05:32:51,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70739 to 70739. [2024-11-14 05:32:51,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70739 states, 70684 states have (on average 4.421523965819705) internal successors, (312531), 70738 states have internal predecessors, (312531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:32:51,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70739 states to 70739 states and 312531 transitions. [2024-11-14 05:32:52,086 INFO L78 Accepts]: Start accepts. Automaton has 70739 states and 312531 transitions. Word has length 4 [2024-11-14 05:32:52,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:32:52,086 INFO L471 AbstractCegarLoop]: Abstraction has 70739 states and 312531 transitions. [2024-11-14 05:32:52,086 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:32:52,087 INFO L276 IsEmpty]: Start isEmpty. Operand 70739 states and 312531 transitions. [2024-11-14 05:32:52,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-14 05:32:52,087 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:32:52,087 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-14 05:32:52,087 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-14 05:32:52,088 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2024-11-14 05:32:52,088 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:32:52,088 INFO L85 PathProgramCache]: Analyzing trace with hash 23290004, now seen corresponding path program 1 times [2024-11-14 05:32:52,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:32:52,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816926082] [2024-11-14 05:32:52,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:32:52,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:32:52,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:32:52,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:32:52,223 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:32:52,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816926082] [2024-11-14 05:32:52,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816926082] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:32:52,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:32:52,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-14 05:32:52,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969838019] [2024-11-14 05:32:52,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:32:52,225 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 05:32:52,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:32:52,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 05:32:52,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 05:32:52,226 INFO L87 Difference]: Start difference. First operand 70739 states and 312531 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:32:54,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:32:54,225 INFO L93 Difference]: Finished difference Result 70739 states and 312531 transitions. [2024-11-14 05:32:54,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 05:32:54,227 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2024-11-14 05:32:54,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:32:54,789 INFO L225 Difference]: With dead ends: 70739 [2024-11-14 05:32:54,789 INFO L226 Difference]: Without dead ends: 36815 [2024-11-14 05:32:54,877 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 05:32:54,880 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 44 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 05:32:54,881 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 22 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 05:32:54,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36815 states. [2024-11-14 05:32:56,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36815 to 36815. [2024-11-14 05:32:56,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36815 states, 36811 states have (on average 4.342125994947162) internal successors, (159838), 36814 states have internal predecessors, (159838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:32:57,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36815 states to 36815 states and 159838 transitions. [2024-11-14 05:32:57,402 INFO L78 Accepts]: Start accepts. Automaton has 36815 states and 159838 transitions. Word has length 4 [2024-11-14 05:32:57,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:32:57,402 INFO L471 AbstractCegarLoop]: Abstraction has 36815 states and 159838 transitions. [2024-11-14 05:32:57,402 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:32:57,403 INFO L276 IsEmpty]: Start isEmpty. Operand 36815 states and 159838 transitions. [2024-11-14 05:32:57,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-14 05:32:57,408 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:32:57,409 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:32:57,409 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-14 05:32:57,409 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2024-11-14 05:32:57,410 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:32:57,410 INFO L85 PathProgramCache]: Analyzing trace with hash -2000061970, now seen corresponding path program 1 times [2024-11-14 05:32:57,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:32:57,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062309450] [2024-11-14 05:32:57,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:32:57,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:32:57,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:32:57,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:32:57,753 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:32:57,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062309450] [2024-11-14 05:32:57,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062309450] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:32:57,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:32:57,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-14 05:32:57,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286489026] [2024-11-14 05:32:57,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:32:57,756 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 05:32:57,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:32:57,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 05:32:57,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 05:32:57,757 INFO L87 Difference]: Start difference. First operand 36815 states and 159838 transitions. Second operand has 3 states, 2 states have (on average 6.5) internal successors, (13), 2 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) [2024-11-14 05:32:58,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:32:58,312 INFO L93 Difference]: Finished difference Result 40245 states and 171402 transitions. [2024-11-14 05:32:58,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 05:32:58,313 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 2 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 [2024-11-14 05:32:58,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:32:58,779 INFO L225 Difference]: With dead ends: 40245 [2024-11-14 05:32:58,780 INFO L226 Difference]: Without dead ends: 35443 [2024-11-14 05:32:58,812 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 05:32:58,815 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 27 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 05:32:58,817 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 43 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 05:32:58,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35443 states. [2024-11-14 05:33:00,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35443 to 35443. [2024-11-14 05:33:01,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35443 states, 35439 states have (on average 4.3332486808318516) internal successors, (153566), 35442 states have internal predecessors, (153566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:33:01,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35443 states to 35443 states and 153566 transitions. [2024-11-14 05:33:01,487 INFO L78 Accepts]: Start accepts. Automaton has 35443 states and 153566 transitions. Word has length 13 [2024-11-14 05:33:01,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:33:01,488 INFO L471 AbstractCegarLoop]: Abstraction has 35443 states and 153566 transitions. [2024-11-14 05:33:01,488 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 2 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) [2024-11-14 05:33:01,488 INFO L276 IsEmpty]: Start isEmpty. Operand 35443 states and 153566 transitions. [2024-11-14 05:33:01,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-14 05:33:01,494 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:33:01,495 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:33:01,495 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-14 05:33:01,495 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2024-11-14 05:33:01,496 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:33:01,496 INFO L85 PathProgramCache]: Analyzing trace with hash -1046662339, now seen corresponding path program 1 times [2024-11-14 05:33:01,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:33:01,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116543526] [2024-11-14 05:33:01,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:33:01,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:33:01,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:33:01,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:33:01,812 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:33:01,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116543526] [2024-11-14 05:33:01,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116543526] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:33:01,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:33:01,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 05:33:01,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259231173] [2024-11-14 05:33:01,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:33:01,814 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 05:33:01,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:33:01,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 05:33:01,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-14 05:33:01,815 INFO L87 Difference]: Start difference. First operand 35443 states and 153566 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 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)