./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-wmm/mix008_tso.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 527bcce2 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_90c75b8f-e699-4d8b-8228-50e25fc54be5/bin/utaipan-verify-QoSU8krkJ5/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c75b8f-e699-4d8b-8228-50e25fc54be5/bin/utaipan-verify-QoSU8krkJ5/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c75b8f-e699-4d8b-8228-50e25fc54be5/bin/utaipan-verify-QoSU8krkJ5/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c75b8f-e699-4d8b-8228-50e25fc54be5/bin/utaipan-verify-QoSU8krkJ5/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-wmm/mix008_tso.oepc.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c75b8f-e699-4d8b-8228-50e25fc54be5/bin/utaipan-verify-QoSU8krkJ5/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c75b8f-e699-4d8b-8228-50e25fc54be5/bin/utaipan-verify-QoSU8krkJ5 --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 5babed9169ff1f82a919f6310b42a42108866edd5cf3c99389faf03347963192 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 19:45:57,890 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 19:45:57,969 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c75b8f-e699-4d8b-8228-50e25fc54be5/bin/utaipan-verify-QoSU8krkJ5/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2023-11-21 19:45:57,975 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 19:45:57,976 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 19:45:58,006 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 19:45:58,007 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 19:45:58,008 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 19:45:58,009 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 19:45:58,010 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 19:45:58,010 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-21 19:45:58,011 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-21 19:45:58,012 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-21 19:45:58,012 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-21 19:45:58,013 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-21 19:45:58,013 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-21 19:45:58,014 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-21 19:45:58,014 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-21 19:45:58,015 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-21 19:45:58,016 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-21 19:45:58,016 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-21 19:45:58,017 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-21 19:45:58,018 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 19:45:58,018 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 19:45:58,019 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 19:45:58,019 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 19:45:58,019 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 19:45:58,020 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 19:45:58,020 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 19:45:58,021 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-21 19:45:58,021 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-21 19:45:58,022 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-21 19:45:58,022 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 19:45:58,023 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-21 19:45:58,023 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-21 19:45:58,024 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 19:45:58,024 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 19:45:58,025 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 19:45:58,025 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 19:45:58,025 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 19:45:58,026 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 19:45:58,028 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 19:45:58,028 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 19:45:58,028 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-21 19:45:58,029 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 19:45:58,029 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 19:45:58,029 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-21 19:45:58,030 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 19:45:58,030 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_90c75b8f-e699-4d8b-8228-50e25fc54be5/bin/utaipan-verify-QoSU8krkJ5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c75b8f-e699-4d8b-8228-50e25fc54be5/bin/utaipan-verify-QoSU8krkJ5 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5babed9169ff1f82a919f6310b42a42108866edd5cf3c99389faf03347963192 [2023-11-21 19:45:58,329 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 19:45:58,369 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 19:45:58,374 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 19:45:58,376 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 19:45:58,376 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 19:45:58,378 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c75b8f-e699-4d8b-8228-50e25fc54be5/bin/utaipan-verify-QoSU8krkJ5/../../sv-benchmarks/c/pthread-wmm/mix008_tso.oepc.i [2023-11-21 19:46:01,699 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 19:46:02,016 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 19:46:02,017 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c75b8f-e699-4d8b-8228-50e25fc54be5/sv-benchmarks/c/pthread-wmm/mix008_tso.oepc.i [2023-11-21 19:46:02,039 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c75b8f-e699-4d8b-8228-50e25fc54be5/bin/utaipan-verify-QoSU8krkJ5/data/a5608c973/2880b7dcf744498292e9d73d20160cd2/FLAG7af430e4c [2023-11-21 19:46:02,054 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c75b8f-e699-4d8b-8228-50e25fc54be5/bin/utaipan-verify-QoSU8krkJ5/data/a5608c973/2880b7dcf744498292e9d73d20160cd2 [2023-11-21 19:46:02,057 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 19:46:02,058 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 19:46:02,060 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 19:46:02,060 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 19:46:02,072 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 19:46:02,073 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 07:46:02" (1/1) ... [2023-11-21 19:46:02,074 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66c224dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:46:02, skipping insertion in model container [2023-11-21 19:46:02,074 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 07:46:02" (1/1) ... [2023-11-21 19:46:02,136 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 19:46:02,733 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 19:46:02,748 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 19:46:02,822 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 19:46:02,865 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 19:46:02,865 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 19:46:02,874 INFO L206 MainTranslator]: Completed translation [2023-11-21 19:46:02,874 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:46:02 WrapperNode [2023-11-21 19:46:02,874 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 19:46:02,876 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 19:46:02,876 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 19:46:02,876 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 19:46:02,885 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:46:02" (1/1) ... [2023-11-21 19:46:02,906 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:46:02" (1/1) ... [2023-11-21 19:46:02,949 INFO L138 Inliner]: procedures = 177, calls = 73, calls flagged for inlining = 7, calls inlined = 9, statements flattened = 290 [2023-11-21 19:46:02,949 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 19:46:02,950 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 19:46:02,950 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 19:46:02,950 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 19:46:02,961 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:46:02" (1/1) ... [2023-11-21 19:46:02,962 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:46:02" (1/1) ... [2023-11-21 19:46:02,969 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:46:02" (1/1) ... [2023-11-21 19:46:02,969 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:46:02" (1/1) ... [2023-11-21 19:46:03,012 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:46:02" (1/1) ... [2023-11-21 19:46:03,015 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:46:02" (1/1) ... [2023-11-21 19:46:03,018 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:46:02" (1/1) ... [2023-11-21 19:46:03,022 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:46:02" (1/1) ... [2023-11-21 19:46:03,044 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 19:46:03,045 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 19:46:03,046 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 19:46:03,046 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 19:46:03,047 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:46:02" (1/1) ... [2023-11-21 19:46:03,058 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 19:46:03,073 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c75b8f-e699-4d8b-8228-50e25fc54be5/bin/utaipan-verify-QoSU8krkJ5/z3 [2023-11-21 19:46:03,093 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c75b8f-e699-4d8b-8228-50e25fc54be5/bin/utaipan-verify-QoSU8krkJ5/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 19:46:03,122 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c75b8f-e699-4d8b-8228-50e25fc54be5/bin/utaipan-verify-QoSU8krkJ5/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 19:46:03,140 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-21 19:46:03,141 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-21 19:46:03,141 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 19:46:03,141 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-21 19:46:03,143 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 19:46:03,143 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-21 19:46:03,144 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-21 19:46:03,144 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-21 19:46:03,145 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-21 19:46:03,145 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-21 19:46:03,145 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-21 19:46:03,145 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-11-21 19:46:03,146 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-11-21 19:46:03,147 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-21 19:46:03,147 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-21 19:46:03,148 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 19:46:03,148 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 19:46:03,150 WARN L212 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-21 19:46:03,385 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 19:46:03,388 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 19:46:04,008 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 19:46:04,299 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 19:46:04,299 INFO L308 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-21 19:46:04,301 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 07:46:04 BoogieIcfgContainer [2023-11-21 19:46:04,301 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 19:46:04,304 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 19:46:04,304 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 19:46:04,307 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 19:46:04,308 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 07:46:02" (1/3) ... [2023-11-21 19:46:04,309 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e0de83d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 07:46:04, skipping insertion in model container [2023-11-21 19:46:04,309 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:46:02" (2/3) ... [2023-11-21 19:46:04,309 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e0de83d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 07:46:04, skipping insertion in model container [2023-11-21 19:46:04,309 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 07:46:04" (3/3) ... [2023-11-21 19:46:04,311 INFO L112 eAbstractionObserver]: Analyzing ICFG mix008_tso.oepc.i [2023-11-21 19:46:04,333 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 19:46:04,333 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2023-11-21 19:46:04,333 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-21 19:46:04,411 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-21 19:46:04,453 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 79 places, 68 transitions, 152 flow [2023-11-21 19:46:07,518 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 60261 states, 60240 states have (on average 4.511420982735724) internal successors, (271768), 60260 states have internal predecessors, (271768), 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) [2023-11-21 19:46:07,670 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 19:46:07,679 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=FINITE_AUTOMATA, 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;@6092fb28, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 19:46:07,679 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2023-11-21 19:46:07,840 INFO L276 IsEmpty]: Start isEmpty. Operand has 60261 states, 60240 states have (on average 4.511420982735724) internal successors, (271768), 60260 states have internal predecessors, (271768), 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) [2023-11-21 19:46:07,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-11-21 19:46:07,853 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:46:07,854 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2023-11-21 19:46:07,855 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-11-21 19:46:07,864 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:46:07,864 INFO L85 PathProgramCache]: Analyzing trace with hash 20879, now seen corresponding path program 1 times [2023-11-21 19:46:07,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:46:07,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063994683] [2023-11-21 19:46:07,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:46:07,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:46:08,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:46:08,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:46:08,294 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:46:08,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063994683] [2023-11-21 19:46:08,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063994683] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:46:08,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:46:08,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-21 19:46:08,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508641523] [2023-11-21 19:46:08,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:46:08,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 19:46:08,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:46:08,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 19:46:08,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 19:46:08,457 INFO L87 Difference]: Start difference. First operand has 60261 states, 60240 states have (on average 4.511420982735724) internal successors, (271768), 60260 states have internal predecessors, (271768), 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 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2023-11-21 19:46:10,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:46:10,214 INFO L93 Difference]: Finished difference Result 56291 states and 246000 transitions. [2023-11-21 19:46:10,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 19:46:10,217 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 2 [2023-11-21 19:46:10,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:46:11,196 INFO L225 Difference]: With dead ends: 56291 [2023-11-21 19:46:11,196 INFO L226 Difference]: Without dead ends: 56291 [2023-11-21 19:46:11,198 INFO L412 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 [2023-11-21 19:46:11,202 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 53 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-21 19:46:11,203 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 36 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-21 19:46:11,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56291 states. [2023-11-21 19:46:14,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56291 to 56291. [2023-11-21 19:46:14,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56291 states, 56271 states have (on average 4.371701231540225) internal successors, (246000), 56290 states have internal predecessors, (246000), 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) [2023-11-21 19:46:15,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56291 states to 56291 states and 246000 transitions. [2023-11-21 19:46:15,282 INFO L78 Accepts]: Start accepts. Automaton has 56291 states and 246000 transitions. Word has length 2 [2023-11-21 19:46:15,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:46:15,282 INFO L495 AbstractCegarLoop]: Abstraction has 56291 states and 246000 transitions. [2023-11-21 19:46:15,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2023-11-21 19:46:15,286 INFO L276 IsEmpty]: Start isEmpty. Operand 56291 states and 246000 transitions. [2023-11-21 19:46:15,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-11-21 19:46:15,287 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:46:15,287 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2023-11-21 19:46:15,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-21 19:46:15,289 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-11-21 19:46:15,290 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:46:15,291 INFO L85 PathProgramCache]: Analyzing trace with hash 20880, now seen corresponding path program 1 times [2023-11-21 19:46:15,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:46:15,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430140307] [2023-11-21 19:46:15,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:46:15,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:46:15,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:46:15,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:46:15,498 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:46:15,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430140307] [2023-11-21 19:46:15,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430140307] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:46:15,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:46:15,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-21 19:46:15,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438079908] [2023-11-21 19:46:15,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:46:15,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 19:46:15,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:46:15,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 19:46:15,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 19:46:15,503 INFO L87 Difference]: Start difference. First operand 56291 states and 246000 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2023-11-21 19:46:16,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:46:16,873 INFO L93 Difference]: Finished difference Result 56290 states and 245999 transitions. [2023-11-21 19:46:16,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 19:46:16,874 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 2 [2023-11-21 19:46:16,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:46:17,277 INFO L225 Difference]: With dead ends: 56290 [2023-11-21 19:46:17,277 INFO L226 Difference]: Without dead ends: 56290 [2023-11-21 19:46:17,278 INFO L412 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 [2023-11-21 19:46:17,279 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 52 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-21 19:46:17,280 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 37 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-21 19:46:17,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56290 states. [2023-11-21 19:46:19,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56290 to 56290. [2023-11-21 19:46:19,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56290 states, 56271 states have (on average 4.371683460397008) internal successors, (245999), 56289 states have internal predecessors, (245999), 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) [2023-11-21 19:46:20,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56290 states to 56290 states and 245999 transitions. [2023-11-21 19:46:20,366 INFO L78 Accepts]: Start accepts. Automaton has 56290 states and 245999 transitions. Word has length 2 [2023-11-21 19:46:20,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:46:20,366 INFO L495 AbstractCegarLoop]: Abstraction has 56290 states and 245999 transitions. [2023-11-21 19:46:20,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2023-11-21 19:46:20,367 INFO L276 IsEmpty]: Start isEmpty. Operand 56290 states and 245999 transitions. [2023-11-21 19:46:20,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-21 19:46:20,367 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:46:20,368 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-21 19:46:20,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-21 19:46:20,368 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-11-21 19:46:20,369 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:46:20,369 INFO L85 PathProgramCache]: Analyzing trace with hash 622658922, now seen corresponding path program 1 times [2023-11-21 19:46:20,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:46:20,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616628007] [2023-11-21 19:46:20,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:46:20,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:46:20,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:46:20,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:46:20,479 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:46:20,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616628007] [2023-11-21 19:46:20,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616628007] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:46:20,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:46:20,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 19:46:20,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557853865] [2023-11-21 19:46:20,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:46:20,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 19:46:20,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:46:20,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 19:46:20,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 19:46:20,482 INFO L87 Difference]: Start difference. First operand 56290 states and 245999 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:46:21,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:46:21,900 INFO L93 Difference]: Finished difference Result 56283 states and 245986 transitions. [2023-11-21 19:46:21,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 19:46:21,900 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2023-11-21 19:46:21,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:46:22,285 INFO L225 Difference]: With dead ends: 56283 [2023-11-21 19:46:22,286 INFO L226 Difference]: Without dead ends: 56283 [2023-11-21 19:46:22,286 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 [2023-11-21 19:46:22,295 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 49 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-21 19:46:22,296 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 41 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-21 19:46:22,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56283 states. [2023-11-21 19:46:24,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56283 to 56283. [2023-11-21 19:46:25,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56283 states, 56265 states have (on average 4.371918599484582) internal successors, (245986), 56282 states have internal predecessors, (245986), 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) [2023-11-21 19:46:25,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56283 states to 56283 states and 245986 transitions. [2023-11-21 19:46:25,421 INFO L78 Accepts]: Start accepts. Automaton has 56283 states and 245986 transitions. Word has length 5 [2023-11-21 19:46:25,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:46:25,422 INFO L495 AbstractCegarLoop]: Abstraction has 56283 states and 245986 transitions. [2023-11-21 19:46:25,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:46:25,422 INFO L276 IsEmpty]: Start isEmpty. Operand 56283 states and 245986 transitions. [2023-11-21 19:46:25,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-21 19:46:25,423 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:46:25,423 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-21 19:46:25,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-21 19:46:25,423 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-11-21 19:46:25,424 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:46:25,424 INFO L85 PathProgramCache]: Analyzing trace with hash 622658923, now seen corresponding path program 1 times [2023-11-21 19:46:25,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:46:25,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804788141] [2023-11-21 19:46:25,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:46:25,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:46:25,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:46:25,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:46:25,572 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:46:25,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804788141] [2023-11-21 19:46:25,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804788141] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:46:25,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:46:25,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 19:46:25,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605197370] [2023-11-21 19:46:25,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:46:25,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 19:46:25,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:46:25,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 19:46:25,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 19:46:25,575 INFO L87 Difference]: Start difference. First operand 56283 states and 245986 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:46:26,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:46:26,959 INFO L93 Difference]: Finished difference Result 56276 states and 245973 transitions. [2023-11-21 19:46:26,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 19:46:26,960 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2023-11-21 19:46:26,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:46:27,475 INFO L225 Difference]: With dead ends: 56276 [2023-11-21 19:46:27,475 INFO L226 Difference]: Without dead ends: 56276 [2023-11-21 19:46:27,476 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 [2023-11-21 19:46:27,479 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 48 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 19:46:27,480 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 42 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 19:46:27,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56276 states. [2023-11-21 19:46:29,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56276 to 56276. [2023-11-21 19:46:29,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56276 states, 56259 states have (on average 4.372153788727137) internal successors, (245973), 56275 states have internal predecessors, (245973), 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) [2023-11-21 19:46:29,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56276 states to 56276 states and 245973 transitions. [2023-11-21 19:46:29,852 INFO L78 Accepts]: Start accepts. Automaton has 56276 states and 245973 transitions. Word has length 5 [2023-11-21 19:46:29,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:46:29,852 INFO L495 AbstractCegarLoop]: Abstraction has 56276 states and 245973 transitions. [2023-11-21 19:46:29,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:46:29,852 INFO L276 IsEmpty]: Start isEmpty. Operand 56276 states and 245973 transitions. [2023-11-21 19:46:29,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-21 19:46:29,853 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:46:29,853 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:46:29,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-21 19:46:29,856 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-11-21 19:46:29,857 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:46:29,857 INFO L85 PathProgramCache]: Analyzing trace with hash -331157006, now seen corresponding path program 1 times [2023-11-21 19:46:29,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:46:29,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339871570] [2023-11-21 19:46:29,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:46:29,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:46:29,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:46:29,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:46:29,934 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:46:29,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339871570] [2023-11-21 19:46:29,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339871570] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:46:29,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:46:29,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 19:46:29,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165065402] [2023-11-21 19:46:29,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:46:29,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 19:46:29,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:46:29,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 19:46:29,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 19:46:29,937 INFO L87 Difference]: Start difference. First operand 56276 states and 245973 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:46:31,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:46:31,484 INFO L93 Difference]: Finished difference Result 56227 states and 245840 transitions. [2023-11-21 19:46:31,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 19:46:31,485 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-11-21 19:46:31,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:46:31,885 INFO L225 Difference]: With dead ends: 56227 [2023-11-21 19:46:31,885 INFO L226 Difference]: Without dead ends: 56227 [2023-11-21 19:46:31,886 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 [2023-11-21 19:46:31,887 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 45 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-21 19:46:31,887 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 45 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-21 19:46:32,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56227 states. [2023-11-21 19:46:34,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56227 to 56227. [2023-11-21 19:46:34,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56227 states, 56211 states have (on average 4.373521196918753) internal successors, (245840), 56226 states have internal predecessors, (245840), 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) [2023-11-21 19:46:35,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56227 states to 56227 states and 245840 transitions. [2023-11-21 19:46:35,353 INFO L78 Accepts]: Start accepts. Automaton has 56227 states and 245840 transitions. Word has length 8 [2023-11-21 19:46:35,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:46:35,354 INFO L495 AbstractCegarLoop]: Abstraction has 56227 states and 245840 transitions. [2023-11-21 19:46:35,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:46:35,354 INFO L276 IsEmpty]: Start isEmpty. Operand 56227 states and 245840 transitions. [2023-11-21 19:46:35,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-21 19:46:35,355 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:46:35,355 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:46:35,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-21 19:46:35,356 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-11-21 19:46:35,356 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:46:35,356 INFO L85 PathProgramCache]: Analyzing trace with hash -331157005, now seen corresponding path program 1 times [2023-11-21 19:46:35,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:46:35,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681118997] [2023-11-21 19:46:35,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:46:35,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:46:35,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:46:35,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:46:35,538 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:46:35,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681118997] [2023-11-21 19:46:35,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681118997] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:46:35,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:46:35,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 19:46:35,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218443577] [2023-11-21 19:46:35,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:46:35,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 19:46:35,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:46:35,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 19:46:35,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 19:46:35,549 INFO L87 Difference]: Start difference. First operand 56227 states and 245840 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:46:36,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:46:36,321 INFO L93 Difference]: Finished difference Result 56178 states and 245707 transitions. [2023-11-21 19:46:36,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 19:46:36,321 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-11-21 19:46:36,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:46:36,694 INFO L225 Difference]: With dead ends: 56178 [2023-11-21 19:46:36,694 INFO L226 Difference]: Without dead ends: 56178 [2023-11-21 19:46:36,694 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 [2023-11-21 19:46:36,695 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 44 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 19:46:36,696 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 46 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 19:46:36,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56178 states. [2023-11-21 19:46:39,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56178 to 56178. [2023-11-21 19:46:39,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56178 states, 56163 states have (on average 4.374890942435411) internal successors, (245707), 56177 states have internal predecessors, (245707), 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) [2023-11-21 19:46:40,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56178 states to 56178 states and 245707 transitions. [2023-11-21 19:46:40,250 INFO L78 Accepts]: Start accepts. Automaton has 56178 states and 245707 transitions. Word has length 8 [2023-11-21 19:46:40,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:46:40,250 INFO L495 AbstractCegarLoop]: Abstraction has 56178 states and 245707 transitions. [2023-11-21 19:46:40,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:46:40,251 INFO L276 IsEmpty]: Start isEmpty. Operand 56178 states and 245707 transitions. [2023-11-21 19:46:40,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-21 19:46:40,252 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:46:40,253 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:46:40,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-21 19:46:40,253 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting P2Err0ASSERT_VIOLATIONMEMORY_LEAK === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-11-21 19:46:40,254 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:46:40,254 INFO L85 PathProgramCache]: Analyzing trace with hash 42168803, now seen corresponding path program 1 times [2023-11-21 19:46:40,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:46:40,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454626253] [2023-11-21 19:46:40,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:46:40,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:46:40,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:46:40,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:46:40,425 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:46:40,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454626253] [2023-11-21 19:46:40,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454626253] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:46:40,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:46:40,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-21 19:46:40,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448915479] [2023-11-21 19:46:40,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:46:40,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 19:46:40,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:46:40,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 19:46:40,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 19:46:40,429 INFO L87 Difference]: Start difference. First operand 56178 states and 245707 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:46:41,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:46:41,029 INFO L93 Difference]: Finished difference Result 49759 states and 216818 transitions. [2023-11-21 19:46:41,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 19:46:41,029 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-11-21 19:46:41,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:46:41,420 INFO L225 Difference]: With dead ends: 49759 [2023-11-21 19:46:41,420 INFO L226 Difference]: Without dead ends: 49171 [2023-11-21 19:46:41,421 INFO L412 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 [2023-11-21 19:46:41,422 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 34 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 19:46:41,423 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 46 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 19:46:41,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49171 states. [2023-11-21 19:46:43,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49171 to 49171. [2023-11-21 19:46:43,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49171 states, 49164 states have (on average 4.3596940851029204) internal successors, (214340), 49170 states have internal predecessors, (214340), 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) [2023-11-21 19:46:44,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49171 states to 49171 states and 214340 transitions. [2023-11-21 19:46:44,531 INFO L78 Accepts]: Start accepts. Automaton has 49171 states and 214340 transitions. Word has length 11 [2023-11-21 19:46:44,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:46:44,532 INFO L495 AbstractCegarLoop]: Abstraction has 49171 states and 214340 transitions. [2023-11-21 19:46:44,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:46:44,532 INFO L276 IsEmpty]: Start isEmpty. Operand 49171 states and 214340 transitions. [2023-11-21 19:46:44,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-21 19:46:44,534 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:46:44,535 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:46:44,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-21 19:46:44,535 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-11-21 19:46:44,536 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:46:44,536 INFO L85 PathProgramCache]: Analyzing trace with hash 42168380, now seen corresponding path program 1 times [2023-11-21 19:46:44,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:46:44,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697205063] [2023-11-21 19:46:44,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:46:44,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:46:44,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:46:44,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:46:44,646 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:46:44,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697205063] [2023-11-21 19:46:44,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697205063] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:46:44,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:46:44,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 19:46:44,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515422139] [2023-11-21 19:46:44,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:46:44,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 19:46:44,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:46:44,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 19:46:44,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 19:46:44,649 INFO L87 Difference]: Start difference. First operand 49171 states and 214340 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:46:45,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:46:45,252 INFO L93 Difference]: Finished difference Result 48779 states and 212933 transitions. [2023-11-21 19:46:45,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 19:46:45,252 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-11-21 19:46:45,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:46:45,663 INFO L225 Difference]: With dead ends: 48779 [2023-11-21 19:46:45,663 INFO L226 Difference]: Without dead ends: 48779 [2023-11-21 19:46:45,664 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 [2023-11-21 19:46:45,666 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 40 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 19:46:45,667 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 47 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 19:46:45,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48779 states.